More NVT stuff

j3270/src/main/java/haus/nightmare/j3270/ui/ConnectDialog.java

@@ -129,14 +129,27 @@ public class ConnectDialog extends JDialog {
             "870 - Eastern Europe / Latin-2",
             "871 - Iceland",
             "875 - Greece (Greek)",
-            "1026 - Turkey (Turkish)",
+            "1026 - Turkey (Turkish Latin-5)",
+            "1155 - Turkey (Turkish Latin-5 Euro \u20AC)",
+            "905 - Turkey (Turkish Latin-3)",
+            "420 - Arabic Bilingual",
+            "424 - Hebrew (with Lowercase)",
+            "803 - Hebrew Old / Standard",
+            "838 - Thai",
+            "1160 - Thai (Euro \u20AC)",
+            "1025 - Cyrillic Multilingual",
+            "1123 - Cyrillic Ukraine",
+            "1154 - Cyrillic Multilingual (Euro \u20AC)",
+            "880 - Cyrillic Russian",
             "1140 - US / Canada (Euro \u20AC)",
             "1141 - Germany / Austria (Euro \u20AC)",
             "1148 - International (Euro \u20AC)",
             "930 - Japanese Katakana Mixed DBCS",
             "939 - Japanese Latin Mixed DBCS",
             "935 - Simplified Chinese Mixed DBCS",
+            "1388 - Simplified Chinese Extended Mixed DBCS",
             "937 - Traditional Chinese Mixed DBCS",
+            "1371 - Traditional Chinese Extended Mixed DBCS",
             "933 - Korean Mixed DBCS"
         };
         codePageCombo = new JComboBox<>(commonCodePages);

j3270/src/main/java/haus/nightmare/j3270/ui/TerminalPanel.java

@@ -730,6 +730,16 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                         }
                     }
                 } else if (e.getID() == KeyEvent.KEY_PRESSED) {
+                    if (client.getNvtProcessor() != null && client.getNvtProcessor().isApplicationKeypad()) {
+                        String kp = client.getNvtProcessor().mapKeypadKey(e.getKeyCode());
+                        if (kp != null) {
+                            try {
+                                client.sendNVTString(kp);
+                            } catch (Exception ignored) {}
+                            e.consume();
+                            return;
+                        }
+                    }
                     if (e.isControlDown() && !e.isAltDown() && !e.isMetaDown()) {
                         int code = e.getKeyCode();
                         if (code >= KeyEvent.VK_A && code <= KeyEvent.VK_Z) {
@@ -838,12 +848,20 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         if (client != null && client.getConnectionState().isFullSession()) {
             if (client.getConnectionState().isNvt()) {
                 try {
-                    switch (dir) {
+                    int vk = KeyEvent.VK_UP;
-                        case "up": client.sendNVTString("\u001B[A"); break;
+                    if ("down".equals(dir)) vk = KeyEvent.VK_DOWN;
-                        case "down": client.sendNVTString("\u001B[B"); break;
+                    else if ("left".equals(dir)) vk = KeyEvent.VK_LEFT;
-                        case "left": client.sendNVTString("\u001B[D"); break;
+                    else if ("right".equals(dir)) vk = KeyEvent.VK_RIGHT;
-                        case "right": client.sendNVTString("\u001B[C"); break;
+                    else if ("home".equals(dir)) vk = KeyEvent.VK_HOME;
-                        case "home": client.sendNVTString("\u001B[H"); break;
+                    boolean handled = client.sendNVTKey(vk, '\0', false, false, false);
+                    if (!handled) {
+                        switch (dir) {
+                            case "up": client.sendNVTString("\u001B[A"); break;
+                            case "down": client.sendNVTString("\u001B[B"); break;
+                            case "left": client.sendNVTString("\u001B[D"); break;
+                            case "right": client.sendNVTString("\u001B[C"); break;
+                            case "home": client.sendNVTString("\u001B[H"); break;
+                        }
                     }
                 } catch (Exception ignored) {}
                 return;
@@ -863,7 +881,11 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         if (client != null && client.getConnectionState().isFullSession()) {
             if (client.getConnectionState().isNvt()) {
                 try {
-                    client.sendNVTString(getNvtFunctionKeySequence(n));
+                    if (client.getNvtProcessor() != null) {
+                        client.sendNVTString(client.getNvtProcessor().getFunctionKeySequence(n));
+                    } else {
+                        client.sendNVTString(getNvtFunctionKeySequence(n));
+                    }
                 } catch (Exception ignored) {}
                 return;
             }
@@ -1093,6 +1115,37 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         if (client != null) {
             setupGraphicsPlaneRenderer();
             updateCellSize();
+
+            client.setNvtClipboardHandler(new haus.nightmare.lib3270j.nvt.NvtProcessor.ClipboardHandler() {
+                @Override
+                public String getClipboardText() {
+                    try {
+                        return (String) Toolkit.getDefaultToolkit().getSystemClipboard()
+                            .getData(DataFlavor.stringFlavor);
+                    } catch (Exception e) {
+                        return "";
+                    }
+                }
+
+                @Override
+                public void setClipboardText(String text) {
+                    if (text != null) {
+                        try {
+                            StringSelection ss = new StringSelection(text);
+                            Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null);
+                        } catch (Exception ignored) {}
+                    }
+                }
+            });
+
+            client.addNvtTitleListener(title -> {
+                SwingUtilities.invokeLater(() -> {
+                    Container top = getTopLevelAncestor();
+                    if (top instanceof JFrame) {
+                        ((JFrame) top).setTitle(title != null && !title.isEmpty() ? ("j3270 - " + title) : "j3270");
+                    }
+                });
+            });
         }
     }
 

lib3270j/src/main/java/haus/nightmare/lib3270j/ConnectionState.java

@@ -59,4 +59,32 @@ public enum ConnectionState {
     public boolean isFullSession() {
         return isNvt() || is3270();
     }
+
+    /**
+     * Map to IBM Host On-Demand ECL connection state integer codes.
+     * 0 = Disconnected, 1 = Connecting/Resolving, 2 = Connected (NVT/Unbound), 3 = Bound (Full 3270 session).
+     */
+    public int toHoDStateCode() {
+        switch (this) {
+            case NOT_CONNECTED:
+                return 0;
+            case RECONNECTING:
+            case RESOLVING:
+            case TCP_PENDING:
+            case TLS_PENDING:
+            case PROXY_PENDING:
+            case TELNET_PENDING:
+                return 1;
+            case CONNECTED_NVT:
+            case CONNECTED_NVT_CHAR:
+            case CONNECTED_UNBOUND:
+            case CONNECTED_E_NVT:
+            case CONNECTED_SSCP:
+                return 2;
+            case CONNECTED_3270:
+            case CONNECTED_TN3270E:
+            default:
+                return 3;
+        }
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/Telnet3270Client.java

@@ -63,11 +63,21 @@ public class Telnet3270Client {
         inputProcessor.setGraphicsPlane(dsProcessor.getGraphicsPlane());
         inputProcessor.setGocaDecoder(dsProcessor.getGocaDecoder());
 
-        // Wire screen update to ECLXfer for CUT mode screen tracking
+        // Wire screen update to ECLXfer for CUT mode screen tracking and ECLPS for event dispatching
         addScreenUpdateListener(new haus.nightmare.lib3270j.listener.ScreenUpdateListener() {
-            @Override public void onScreenUpdated() { xfer.onScreenUpdated(); }
+            @Override public void onScreenUpdated() {
-            @Override public void onScreenSizeChanged(int rows, int cols) {}
+                xfer.onScreenUpdated();
-            @Override public void onSoundAlarm() {}
+                ps.notifyPSUpdate(0, 0, screenBuffer.getRows() - 1, screenBuffer.getCols() - 1, true);
+            }
+            @Override public void onCursorMoved(int oldAddress, int newAddress) {
+                ps.notifyCursorMoved(oldAddress, newAddress);
+            }
+            @Override public void onScreenSizeChanged(int rows, int cols) {
+                ps.notifyScreenResized(rows, cols);
+            }
+            @Override public void onSoundAlarm() {
+                ps.notifyAlarm();
+            }
         });
     }
 
@@ -90,6 +100,52 @@ public class Telnet3270Client {
         fsm.onConnected();
     }
 
+    /**
+     * Connect to the configured host synchronously, blocking until the full data session is established
+     * (or timeout expires).
+     * @param timeoutMs maximum time to wait in milliseconds
+     * @return true if successfully connected, false if timed out
+     * @throws IOException if network connection fails
+     */
+    public boolean connect(long timeoutMs) throws IOException {
+        connect();
+        long start = System.currentTimeMillis();
+        while (System.currentTimeMillis() - start < timeoutMs) {
+            ConnectionState state = getConnectionState();
+            if (state.isFullSession() || (state.isFullyConnected() && isConnected())) {
+                return true;
+            }
+            if (state == ConnectionState.NOT_CONNECTED && !isConnected()) {
+                return false;
+            }
+            try {
+                Thread.sleep(25);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                return false;
+            }
+        }
+        return getConnectionState().isFullSession() || isConnected();
+    }
+
+    /**
+     * Connect to the configured host synchronously and block until the presentation space matches
+     * the specified screen descriptor.
+     * @param timeoutMs maximum time to wait in milliseconds
+     * @param desc ECLScreenDesc descriptor to match against
+     * @return true if successfully connected and screen matched, false otherwise
+     * @throws IOException if network connection fails
+     */
+    public boolean connect(long timeoutMs, haus.nightmare.lib3270j.ecl.ECLScreenDesc desc) throws IOException {
+        long start = System.currentTimeMillis();
+        if (!connect(timeoutMs)) {
+            return false;
+        }
+        long elapsed = System.currentTimeMillis() - start;
+        long remaining = Math.max(1, timeoutMs - elapsed);
+        return ps.waitForScreen(desc, remaining);
+    }
+
     /**
      * Disconnect from the host.
      */
@@ -101,6 +157,35 @@ public class Telnet3270Client {
         fsm.onDisconnect();
     }
 
+    /**
+     * Disconnect from host with synchronous teardown.
+     * @param timeoutMs maximum time to wait for graceful disconnect in milliseconds
+     */
+    public void disconnect(long timeoutMs) {
+        disconnect();
+        long start = System.currentTimeMillis();
+        while (System.currentTimeMillis() - start < timeoutMs) {
+            if (getConnectionState() == ConnectionState.NOT_CONNECTED && !isConnected()) {
+                break;
+            }
+            try {
+                Thread.sleep(20);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                break;
+            }
+        }
+    }
+
+    /** HoD StopCommunication compatibility alias. */
+    public void stopCommunication() {
+        disconnect();
+    }
+
+    public void stopCommunication(long timeoutMs) {
+        disconnect(timeoutMs);
+    }
+
     /**
      * Check if connected (any state past TCP pending).
      */
@@ -114,11 +199,20 @@ public class Telnet3270Client {
         fsm.addConnectionListener(l);
     }
 
+    public void removeConnectionListener(ConnectionListener l) {
+        fsm.removeConnectionListener(l);
+    }
+
     public void addScreenUpdateListener(ScreenUpdateListener l) {
         fsm.addScreenUpdateListener(l);
         dsProcessor.addScreenUpdateListener(l);
     }
 
+    public void removeScreenUpdateListener(ScreenUpdateListener l) {
+        fsm.removeScreenUpdateListener(l);
+        dsProcessor.removeScreenUpdateListener(l);
+    }
+
     public void addSCSInboundListener(haus.nightmare.lib3270j.listener.SCSInboundListener l) {
         fsm.addSCSInboundListener(l);
     }
@@ -198,6 +292,37 @@ public class Telnet3270Client {
         fsm.sendNVTString(s);
     }
 
+    /** Send an NVT key event mapped through NVT processor. */
+    public boolean sendNVTKey(int keyCode, char keyChar, boolean shift, boolean ctrl, boolean alt) throws IOException {
+        haus.nightmare.lib3270j.nvt.NvtProcessor nvt = getNvtProcessor();
+        if (nvt != null) {
+            String seq = nvt.mapKey(keyCode, keyChar, shift, ctrl, alt);
+            if (seq != null && !seq.isEmpty()) {
+                fsm.sendNvtData(seq.getBytes(java.nio.charset.StandardCharsets.US_ASCII));
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public void addNvtTitleListener(haus.nightmare.lib3270j.nvt.NvtProcessor.NvtTitleListener l) {
+        if (getNvtProcessor() != null) {
+            getNvtProcessor().addTitleListener(l);
+        }
+    }
+
+    public void removeNvtTitleListener(haus.nightmare.lib3270j.nvt.NvtProcessor.NvtTitleListener l) {
+        if (getNvtProcessor() != null) {
+            getNvtProcessor().removeTitleListener(l);
+        }
+    }
+
+    public void setNvtClipboardHandler(haus.nightmare.lib3270j.nvt.NvtProcessor.ClipboardHandler h) {
+        if (getNvtProcessor() != null) {
+            getNvtProcessor().setClipboardHandler(h);
+        }
+    }
+
     // ========== Convenience input methods & HoD compatibility ==========
 
     /** Type a character at the cursor position. */

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/AbstractDBCSCodePage.java

@@ -106,6 +106,19 @@ public abstract class AbstractDBCSCodePage extends AbstractCodePage {
 
     @Override
     public String ebcdicToString(byte[] ebcdic, int offset, int length) {
+        return ebcdicToString(ebcdic, offset, length, false);
+    }
+
+    /**
+     * Translate an EBCDIC byte array slice to a Unicode String with optional SO/SI escape preservation.
+     *
+     * @param ebcdic       source byte array
+     * @param offset       start offset
+     * @param length       number of bytes
+     * @param preserveSOSI if true, preserves Shift-Out (\u000E) and Shift-In (\u000F) control characters
+     * @return translated Unicode String
+     */
+    public String ebcdicToString(byte[] ebcdic, int offset, int length, boolean preserveSOSI) {
         if (ebcdic == null || length <= 0) return "";
 
         StringBuilder sb = new StringBuilder(length);
@@ -117,9 +130,15 @@ public abstract class AbstractDBCSCodePage extends AbstractCodePage {
             int b = ebcdic[i] & 0xFF;
             if (b == SO) {
                 inDBCS = true;
+                if (preserveSOSI) {
+                    sb.append((char) SO);
+                }
                 i++;
             } else if (b == SI) {
                 inDBCS = false;
+                if (preserveSOSI) {
+                    sb.append((char) SI);
+                }
                 i++;
             } else if (inDBCS) {
                 if (i + 1 < end) {
@@ -127,13 +146,22 @@ public abstract class AbstractDBCSCodePage extends AbstractCodePage {
                     if (b2 == SI) {
                         // Orphaned single byte before SI
                         inDBCS = false;
+                        if (preserveSOSI) {
+                            sb.append(ebcdicToUnicode(b));
+                            sb.append((char) SI);
+                        }
                         i += 2;
+                    } else if (b2 == SO) {
+                        // Unmatched byte followed by another SO
+                        sb.append(ebcdicToUnicode(b));
+                        i++;
                     } else {
                         sb.append(dbcsToUnicode(b, b2));
                         i += 2;
                     }
                 } else {
-                    // Trailing byte
+                    // Trailing single byte inside unclosed DBCS shift
+                    sb.append(ebcdicToUnicode(b));
                     i++;
                 }
             } else {
@@ -147,14 +175,39 @@ public abstract class AbstractDBCSCodePage extends AbstractCodePage {
 
     @Override
     public byte[] stringToEbcdic(String s) {
+        return stringToEbcdic(s, true);
+    }
+
+    /**
+     * Translate a Unicode String to EBCDIC byte array with optional parsing of embedded SO/SI markers.
+     *
+     * @param s              input Unicode string
+     * @param parseSOSIMarkers whether to interpret embedded \u000E (SO) and \u000F (SI) characters
+     * @return EBCDIC byte array with balanced SO/SI framing
+     */
+    public byte[] stringToEbcdic(String s, boolean parseSOSIMarkers) {
         if (s == null || s.isEmpty()) return new byte[0];
 
-        // Manual state machine encoding
         ByteArrayOutputStream out = new ByteArrayOutputStream(s.length() * 2);
         boolean inDBCS = false;
 
         for (int i = 0; i < s.length(); i++) {
             char c = s.charAt(i);
+
+            if (parseSOSIMarkers && c == (char) SO) {
+                if (!inDBCS) {
+                    out.write(SO);
+                    inDBCS = true;
+                }
+                continue;
+            } else if (parseSOSIMarkers && c == (char) SI) {
+                if (inDBCS) {
+                    out.write(SI);
+                    inDBCS = false;
+                }
+                continue;
+            }
+
             int dbcsCode = unicodeToDbcs(c);
 
             if (dbcsCode >= 0) {
@@ -175,10 +228,26 @@ public abstract class AbstractDBCSCodePage extends AbstractCodePage {
             }
         }
 
+        // Auto-close unclosed DBCS shift sequence
         if (inDBCS) {
             out.write(SI);
         }
 
         return out.toByteArray();
     }
+
+    /**
+     * Helper to decode an EBCDIC byte array to UTF-8 String preserving SO/SI control codes.
+     */
+    public String ebcdicToUtf8WithSOSI(byte[] ebcdic) {
+        if (ebcdic == null) return "";
+        return ebcdicToString(ebcdic, 0, ebcdic.length, true);
+    }
+
+    /**
+     * Helper to encode a UTF-8/Unicode String with embedded SO/SI markers to EBCDIC.
+     */
+    public byte[] utf8WithSOSIToEbcdic(String s) {
+        return stringToEbcdic(s, true);
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/CodePageRegistry.java

@@ -53,6 +53,9 @@ public class CodePageRegistry {
         register(new Cp937.Cp1371());
         register(new Cp933());
 
+        // Register Phase 8 Extended EBCDIC Codepages (Arabic, Hebrew, Thai, Cyrillic, Turkish, Extended DBCS)
+        registerExtendedCodepages();
+
         // Setup common aliases
         addAlias("us", "037");
         addAlias("usa", "037");
@@ -218,6 +221,100 @@ public class CodePageRegistry {
         return CODE_PAGES.get("037");
     }
 
+    /**
+     * Register extended EBCDIC codepages from HoD v14 converters:
+     * - Arabic: Cp420, Cp424
+     * - Hebrew: Cp424, Cp803
+     * - Thai: Cp838, Cp1160
+     * - Cyrillic: Cp1025, Cp1123, Cp1154, Cp880
+     * - Turkish: Cp1155, Cp905
+     * - Extended Chinese DBCS: Cp1388, Cp1371
+     */
+    public static void registerExtendedCodepages() {
+        // Arabic & Hebrew
+        register(new Cp420());
+        register(new Cp424());
+        register(new Cp803());
+
+        // Thai
+        register(new Cp838());
+        register(new Cp1160());
+
+        // Cyrillic / Russian / Ukrainian
+        register(new Cp1025());
+        register(new Cp1123());
+        register(new Cp1154());
+        register(new Cp880());
+
+        // Turkish
+        register(new Cp1155());
+        register(new Cp905());
+
+        // Extended Chinese DBCS
+        register(new Cp1388());
+        register(new Cp1371());
+
+        // Setup Extended Aliases
+        addAlias("ar", "420");
+        addAlias("arabic", "420");
+        addAlias("ebcdic-cp-ar", "420");
+
+        addAlias("he", "424");
+        addAlias("hebrew", "424");
+        addAlias("hebrew-lowercase", "424");
+        addAlias("ebcdic-cp-he", "424");
+
+        addAlias("hebrew-old", "803");
+        addAlias("israel", "803");
+        addAlias("iw", "803");
+        addAlias("ebcdic-cp-he-old", "803");
+
+        addAlias("th", "838");
+        addAlias("thai", "838");
+        addAlias("ebcdic-cp-th", "838");
+        addAlias("thai-euro", "1160");
+
+        addAlias("ru", "1025");
+        addAlias("russian", "1025");
+        addAlias("cyrillic", "1025");
+        addAlias("ebcdic-cp-ru", "1025");
+
+        addAlias("ukraine", "1123");
+        addAlias("ukrainian", "1123");
+        addAlias("ebcdic-cp-ua", "1123");
+
+        addAlias("cyrillic-euro", "1154");
+        addAlias("ru-euro", "1154");
+        addAlias("russian-euro", "1154");
+
+        addAlias("cyrillic-russian", "880");
+        addAlias("ru-old", "880");
+
+        addAlias("turkish-euro", "1155");
+        addAlias("tr-euro", "1155");
+        addAlias("turkish-latin3", "905");
+        addAlias("tr-latin3", "905");
+
+        addAlias("chinese-ext-simplified", "1388");
+        addAlias("zh-simplified-ext", "1388");
+        addAlias("zh-ext", "1388");
+        addAlias("chinese-ext-traditional", "1371");
+        addAlias("zh-traditional-ext", "1371");
+        addAlias("zh-tw-ext", "1371");
+    }
+
+    /**
+     * Check if a code page is registered.
+     */
+    public static boolean hasCodePage(String name) {
+        if (name == null || name.trim().isEmpty()) return false;
+        String raw = name.trim();
+        if (CODE_PAGES.containsKey(raw)) return true;
+        String norm = normalizeKey(raw);
+        if (CODE_PAGES.containsKey(norm)) return true;
+        return ALIASES.containsKey(norm);
+    }
+
     /**
      * Get an unmodifiable list of all registered built-in CodePages.
      */

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1025.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1025 (Cyrillic Multilingual EBCDIC - Russian, Bulgarian, Belarusian, Serbian, Macedonian).
+ * CCSID / CPGID: 1025, GCSGID: 1150.
+ */
+public class Cp1025 extends AbstractCodePage {
+
+    public static final String ID = "1025";
+    public static final String DESCRIPTION = "Cyrillic Multilingual EBCDIC";
+    public static final int CPGID = 1025;
+    public static final int GCSGID = 1150;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x044F, 0x044E, 0x044D, 0x044C, 0x044B, 0x044A, 0x0449,
+        0x0448, 0x0447, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x0446, 0x0445, 0x0444, 0x0443, 0x0442, 0x0441, 0x0440,
+        0x043F, 0x043E, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x043D, 0x043C, 0x043B, 0x043A, 0x0439, 0x0438,
+        0x0437, 0x0436, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x0435, 0x0434, 0x0433, 0x0432, 0x0431, 0x0430, 0x0451, 0x0453,
+        0x0452, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x0454, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x0455, 0x0456, 0x0457, 0x0458, 0x0459, 0x045A,
+        // 90-9F
+        0x045B, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x045C, 0x045E, 0x045F, 0x0401, 0x0402, 0x0403,
+        // A0-AF
+        0x0404, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x0405, 0x0406, 0x0407, 0x0408, 0x0409, 0x040A,
+        // B0-BF
+        0x040B, 0x00A3, 0x040C, 0x00B7, 0x00A9, 0x040E, 0x040F, 0x0410,
+        0x0411, 0x0412, 0x00AC, 0x007C, 0x0413, 0x0414, 0x0415, 0x0416,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x041D, 0x041E, 0x041F, 0x0420, 0x0421, 0x0422,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E,
+    };
+
+    public Cp1025() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "1025", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1123.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1123 (Cyrillic Ukraine EBCDIC).
+ * CCSID / CPGID: 1123, GCSGID: 1399.
+ */
+public class Cp1123 extends AbstractCodePage {
+
+    public static final String ID = "1123";
+    public static final String DESCRIPTION = "Cyrillic Ukraine EBCDIC";
+    public static final int CPGID = 1123;
+    public static final int GCSGID = 1399;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x044F, 0x044E, 0x044D, 0x044C, 0x044B, 0x044A, 0x0449,
+        0x0448, 0x0447, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x0446, 0x0445, 0x0444, 0x0443, 0x0442, 0x0441, 0x0440,
+        0x043F, 0x043E, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x043D, 0x043C, 0x043B, 0x043A, 0x0439, 0x0438,
+        0x0437, 0x0436, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x0435, 0x0434, 0x0433, 0x0432, 0x0431, 0x0430, 0x0451, 0x0491,
+        0x0454, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x0456, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x0457, 0x00BB, 0x00F0, 0x00FD, 0x00FE, 0x00B1,
+        // 90-9F
+        0x00B0, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x00AA, 0x00BA, 0x00E6, 0x00B8, 0x00C6, 0x00A4,
+        // A0-AF
+        0x00B5, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x00A1, 0x00BF, 0x00D0, 0x00DD, 0x00DE, 0x00AE,
+        // B0-BF
+        0x00A2, 0x00A3, 0x00A5, 0x00B7, 0x00A9, 0x00A7, 0x00B6, 0x00BC,
+        0x00BD, 0x00BE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x041D, 0x041E, 0x041F, 0x0420, 0x0421, 0x0422,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E,
+    };
+
+    public Cp1123() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "1123", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1154.java

@@ -0,0 +1,24 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1154 (Cyrillic Multilingual with Euro \u20AC).
+ * CCSID / CPGID: 1154, GCSGID: 1305.
+ */
+public class Cp1154 extends AbstractCodePage {
+
+    public static final String ID = "1154";
+    public static final String DESCRIPTION = "Cyrillic Multilingual EBCDIC (with Euro \u20AC)";
+    public static final int CPGID = 1154;
+    public static final int GCSGID = 1305;
+
+    public static final int[] MAPPING = new int[256];
+
+    static {
+        System.arraycopy(Cp1025.MAPPING, 0, MAPPING, 0, 256);
+        MAPPING[0x9F] = 0x20AC; // Euro character \u20AC
+    }
+
+    public Cp1154() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "1154", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1155.java

@@ -0,0 +1,24 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1155 (Turkey - Turkish Latin-5 with Euro \u20AC).
+ * CCSID / CPGID: 1155, GCSGID: 1306.
+ */
+public class Cp1155 extends AbstractCodePage {
+
+    public static final String ID = "1155";
+    public static final String DESCRIPTION = "Turkey - Turkish Latin-5 (with Euro \u20AC)";
+    public static final int CPGID = 1155;
+    public static final int GCSGID = 1306;
+
+    public static final int[] MAPPING = new int[256];
+
+    static {
+        System.arraycopy(Cp1026.MAPPING, 0, MAPPING, 0, 256);
+        MAPPING[0x9F] = 0x20AC; // Euro character \u20AC
+    }
+
+    public Cp1155() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "1155", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1160.java

@@ -0,0 +1,24 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1160 (Thai EBCDIC with Euro \u20AC).
+ * CCSID / CPGID: 1160, GCSGID: 1176.
+ */
+public class Cp1160 extends AbstractCodePage {
+
+    public static final String ID = "1160";
+    public static final String DESCRIPTION = "Thai EBCDIC (with Euro \u20AC)";
+    public static final int CPGID = 1160;
+    public static final int GCSGID = 1176;
+
+    public static final int[] MAPPING = new int[256];
+
+    static {
+        System.arraycopy(Cp838.MAPPING, 0, MAPPING, 0, 256);
+        MAPPING[0x9F] = 0x20AC; // Euro character \u20AC
+    }
+
+    public Cp1160() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "1160", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1371.java

@@ -0,0 +1,17 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1371 (Traditional Chinese Extended Mixed DBCS).
+ * CCSID / CPGID: 1371, GCSGID: 1174.
+ */
+public class Cp1371 extends AbstractDBCSCodePage {
+
+    public static final String ID = "1371";
+    public static final String DESCRIPTION = "Traditional Chinese Extended Mixed DBCS";
+    public static final int CPGID = 1371;
+    public static final int GCSGID = 1174;
+
+    public Cp1371() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, Cp037.MAPPING, "x-IBM1371");
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp1388.java

@@ -0,0 +1,17 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 1388 (Simplified Chinese Extended Mixed DBCS).
+ * CCSID / CPGID: 1388, GCSGID: 1175.
+ */
+public class Cp1388 extends AbstractDBCSCodePage {
+
+    public static final String ID = "1388";
+    public static final String DESCRIPTION = "Simplified Chinese Extended Mixed DBCS";
+    public static final int CPGID = 1388;
+    public static final int GCSGID = 1175;
+
+    public Cp1388() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, Cp037.MAPPING, "x-IBM1388");
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp420.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 420 (Arabic Bilingual EBCDIC).
+ * CCSID / CPGID: 420, GCSGID: 235.
+ */
+public class Cp420 extends AbstractCodePage {
+
+    public static final String ID = "420";
+    public static final String DESCRIPTION = "Arabic Bilingual EBCDIC";
+    public static final int CPGID = 420;
+    public static final int GCSGID = 235;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x0640, 0xFE83, 0xFE87, 0xFE85, 0xFE81, 0xFE80, 0x0621,
+        0xFE8D, 0xFE8B, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0xFE8E, 0xFE8F, 0xFE91, 0xFE93, 0xFE95, 0xFE97, 0xFE99,
+        0xFE9B, 0xFE9D, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0xFE9F, 0xFEA1, 0xFEA3, 0xFEA5, 0xFEA7, 0xFEA9,
+        0xFEAB, 0xFEAD, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0xFEAF, 0xFEB1, 0xFEB3, 0xFEB5, 0xFEB7, 0xFEB9, 0xFEBB, 0xFEBD,
+        0xFEBF, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0xFEC1, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0xFEC3, 0xFEC5, 0xFEC7, 0xFEC9, 0xFECB, 0xFECD,
+        // 90-9F
+        0xFECF, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0xFED1, 0xFED3, 0xFED5, 0xFED7, 0xFED9, 0xFEDB,
+        // A0-AF
+        0xFEDD, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0xFEDF, 0xFEE1, 0xFEE3, 0xFEE5, 0xFEE7, 0xFEE9,
+        // B0-BF
+        0xFEEB, 0xFEED, 0xFEEF, 0xFEF1, 0xFEF3, 0xFEF5, 0xFEF7, 0xFEF9,
+        0xFEFB, 0x00AE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x060C, 0x061B, 0x061F, 0x0628, 0x062A, 0x062B,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x062C, 0x062D, 0x062E, 0x062F, 0x0630, 0x0631,
+        // E0-EF
+        0x005C, 0x0632, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x0633, 0x0634, 0x0635, 0x0636, 0x0637, 0x0638,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x0639, 0x063A, 0x0641, 0x0642, 0x0643, 0x009F,
+    };
+
+    public Cp420() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "420", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp424.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 424 (Hebrew with Lowercase EBCDIC).
+ * CCSID / CPGID: 424, GCSGID: 941.
+ */
+public class Cp424 extends AbstractCodePage {
+
+    public static final String ID = "424";
+    public static final String DESCRIPTION = "Hebrew (with Lowercase) EBCDIC";
+    public static final int CPGID = 424;
+    public static final int GCSGID = 941;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6,
+        0x05D7, 0x05D8, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x05D9, 0x05DA, 0x05DB, 0x05DC, 0x05DD, 0x05DE, 0x05DF,
+        0x05E0, 0x05E1, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x05E2, 0x05E3, 0x05E4, 0x05E5, 0x05E6, 0x05E7,
+        0x05E8, 0x05E9, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x05EA, 0x00A0, 0x2017, 0x00B8, 0x00A8, 0x00B4, 0x00AA, 0x00BA,
+        0x00DF, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x00D8, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x00AB, 0x00BB, 0x00F0, 0x00FD, 0x00FE, 0x00B1,
+        // 90-9F
+        0x00B0, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x00AA, 0x00BA, 0x00E6, 0x00B8, 0x00C6, 0x00A4,
+        // A0-AF
+        0x00B5, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x00A1, 0x00BF, 0x00D0, 0x00DD, 0x00DE, 0x00AE,
+        // B0-BF
+        0x00A2, 0x00A3, 0x00A5, 0x00B7, 0x00A9, 0x00A7, 0x00B6, 0x00BC,
+        0x00BD, 0x00BE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x00AD, 0x00F4, 0x00F6, 0x00F2, 0x00F3, 0x00F5,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x00B9, 0x00FB, 0x00FC, 0x00F9, 0x00FA, 0x00FF,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x00B2, 0x00D4, 0x00D6, 0x00D2, 0x00D3, 0x00D5,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x00B3, 0x00DB, 0x00DC, 0x00D9, 0x00DA, 0x009F,
+    };
+
+    public Cp424() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "424", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp803.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 803 (Hebrew Old / Standard EBCDIC).
+ * CCSID / CPGID: 803, GCSGID: 1147.
+ */
+public class Cp803 extends AbstractCodePage {
+
+    public static final String ID = "803";
+    public static final String DESCRIPTION = "Hebrew Old / Standard EBCDIC";
+    public static final int CPGID = 803;
+    public static final int GCSGID = 1147;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x00A0, 0x00E2, 0x00E4, 0x00E0, 0x00E1, 0x00E3, 0x00E5,
+        0x00E7, 0x00F1, 0x00A2, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x00E9, 0x00EA, 0x00EB, 0x00E8, 0x00ED, 0x00EE, 0x00EF,
+        0x00EC, 0x00DF, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x00C2, 0x00C4, 0x00C0, 0x00C1, 0x00C3, 0x00C5,
+        0x00C7, 0x00D1, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x00F8, 0x00C9, 0x00CA, 0x00CB, 0x00C8, 0x00CD, 0x00CE, 0x00CF,
+        0x00CC, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x00D8, 0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6,
+        0x05D7, 0x05D8, 0x00AB, 0x00BB, 0x00F0, 0x00FD, 0x00FE, 0x00B1,
+        // 90-9F
+        0x00B0, 0x05D9, 0x05DA, 0x05DB, 0x05DC, 0x05DD, 0x05DE, 0x05DF,
+        0x05E0, 0x05E1, 0x00AA, 0x00BA, 0x00E6, 0x00B8, 0x00C6, 0x00A4,
+        // A0-AF
+        0x00B5, 0x007E, 0x05E2, 0x05E3, 0x05E4, 0x05E5, 0x05E6, 0x05E7,
+        0x05E8, 0x05E9, 0x00A1, 0x00BF, 0x00D0, 0x00DD, 0x00DE, 0x00AE,
+        // B0-BF
+        0x05EA, 0x00A3, 0x00A5, 0x00B7, 0x00A9, 0x00A7, 0x00B6, 0x00BC,
+        0x00BD, 0x00BE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x00AD, 0x00F4, 0x00F6, 0x00F2, 0x00F3, 0x00F5,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x00B9, 0x00FB, 0x00FC, 0x00F9, 0x00FA, 0x00FF,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x00B2, 0x00D4, 0x00D6, 0x00D2, 0x00D3, 0x00D5,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x00B3, 0x00DB, 0x00DC, 0x00D9, 0x00DA, 0x009F,
+    };
+
+    public Cp803() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "803", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp838.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 838 (Thai EBCDIC).
+ * CCSID / CPGID: 838, GCSGID: 1176.
+ */
+public class Cp838 extends AbstractCodePage {
+
+    public static final String ID = "838";
+    public static final String DESCRIPTION = "Thai EBCDIC";
+    public static final int CPGID = 838;
+    public static final int GCSGID = 1176;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x0E01, 0x0E02, 0x0E03, 0x0E04, 0x0E05, 0x0E06, 0x0E07,
+        0x0E08, 0x0E09, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x0E0A, 0x0E0B, 0x0E0C, 0x0E0D, 0x0E0E, 0x0E0F, 0x0E10,
+        0x0E11, 0x0E12, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x0E13, 0x0E14, 0x0E15, 0x0E16, 0x0E17, 0x0E18,
+        0x0E19, 0x0E1A, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x0E1B, 0x0E1C, 0x0E1D, 0x0E1E, 0x0E1F, 0x0E20, 0x0E21, 0x0E22,
+        0x0E23, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x0E24, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x0E25, 0x0E26, 0x0E27, 0x0E28, 0x0E29, 0x0E2A,
+        // 90-9F
+        0x0E2B, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x0E2C, 0x0E2D, 0x0E2E, 0x0E2F, 0x0E30, 0x0E31,
+        // A0-AF
+        0x0E32, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x0E33, 0x0E34, 0x0E35, 0x0E36, 0x0E37, 0x0E38,
+        // B0-BF
+        0x0E39, 0x0E3A, 0x0E40, 0x0E41, 0x0E42, 0x0E43, 0x0E44, 0x0E45,
+        0x0E46, 0x0E47, 0x00AC, 0x007C, 0x0E48, 0x0E49, 0x0E4A, 0x0E4B,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x0E4C, 0x0E4D, 0x0E4E, 0x0E4F, 0x0E50, 0x0E51,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x0E52, 0x0E53, 0x0E54, 0x0E55, 0x0E56, 0x0E57,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x0E58, 0x0E59, 0x0E5A, 0x0E5B, 0x00D3, 0x00D5,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x00B3, 0x00DB, 0x00DC, 0x00D9, 0x00DA, 0x009F,
+    };
+
+    public Cp838() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "838", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp880.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 880 (Cyrillic Russian EBCDIC).
+ * CCSID / CPGID: 880, GCSGID: 960.
+ */
+public class Cp880 extends AbstractCodePage {
+
+    public static final String ID = "880";
+    public static final String DESCRIPTION = "Cyrillic Russian EBCDIC";
+    public static final int CPGID = 880;
+    public static final int GCSGID = 960;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x00A0, 0x044F, 0x044E, 0x044D, 0x044C, 0x044B, 0x044A,
+        0x0449, 0x0448, 0x005B, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x0447, 0x0446, 0x0445, 0x0444, 0x0443, 0x0442, 0x0441,
+        0x0440, 0x043F, 0x005D, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x043E, 0x043D, 0x043C, 0x043B, 0x043A, 0x0439,
+        0x0438, 0x0437, 0x00A6, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x0436, 0x0435, 0x0434, 0x0433, 0x0432, 0x0431, 0x0430, 0x0451,
+        0x045E, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x045F, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x0456, 0x0458, 0x0459, 0x045A, 0x045C, 0x045B,
+        // 90-9F
+        0x0402, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x0403, 0x0404, 0x0405, 0x0406, 0x0408, 0x0409,
+        // A0-AF
+        0x040A, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x040C, 0x040B, 0x040F, 0x040E, 0x0401, 0x00AE,
+        // B0-BF
+        0x005E, 0x00A3, 0x00A5, 0x00B7, 0x00A9, 0x00A7, 0x00B6, 0x00BC,
+        0x00BD, 0x00BE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x007B, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x041F, 0x0420, 0x0421, 0x0422, 0x0423, 0x0424,
+        // D0-DF
+        0x007D, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429, 0x042A,
+        // E0-EF
+        0x005C, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F, 0x0410,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x009F,
+    };
+
+    public Cp880() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "880", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/Cp905.java

@@ -0,0 +1,68 @@
+package haus.nightmare.lib3270j.charset;
+
+/**
+ * IBM Code Page 905 (Turkey - Turkish Latin-3 EBCDIC).
+ * CCSID / CPGID: 905, GCSGID: 1151.
+ */
+public class Cp905 extends AbstractCodePage {
+
+    public static final String ID = "905";
+    public static final String DESCRIPTION = "Turkey - Turkish Latin-3 EBCDIC";
+    public static final int CPGID = 905;
+    public static final int GCSGID = 1151;
+
+    public static final int[] MAPPING = {
+        // 00-0F
+        0x0000, 0x0001, 0x0002, 0x0003, 0x009C, 0x0009, 0x0086, 0x007F,
+        0x0097, 0x008D, 0x008E, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+        // 10-1F
+        0x0010, 0x0011, 0x0012, 0x0013, 0x009D, 0x0085, 0x0008, 0x0087,
+        0x0018, 0x0019, 0x0092, 0x008F, 0x001C, 0x001D, 0x001E, 0x001F,
+        // 20-2F
+        0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x000A, 0x0017, 0x001B,
+        0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x0005, 0x0006, 0x0007,
+        // 30-3F
+        0x0090, 0x0091, 0x0016, 0x0093, 0x0094, 0x0095, 0x0096, 0x0004,
+        0x0098, 0x0099, 0x009A, 0x009B, 0x0014, 0x0015, 0x009E, 0x001A,
+        // 40-4F
+        0x0020, 0x00A0, 0x00E2, 0x00E4, 0x00E0, 0x00E1, 0x00E3, 0x00E5,
+        0x00E7, 0x00F1, 0x011E, 0x002E, 0x003C, 0x0028, 0x002B, 0x0021,
+        // 50-5F
+        0x0026, 0x00E9, 0x00EA, 0x00EB, 0x00E8, 0x00ED, 0x00EE, 0x00EF,
+        0x00EC, 0x00DF, 0x0130, 0x0024, 0x002A, 0x0029, 0x003B, 0x005E,
+        // 60-6F
+        0x002D, 0x002F, 0x00C2, 0x00C4, 0x00C0, 0x00C1, 0x00C3, 0x00C5,
+        0x00C7, 0x00D1, 0x015E, 0x002C, 0x0025, 0x005F, 0x003E, 0x003F,
+        // 70-7F
+        0x00F8, 0x00C9, 0x00CA, 0x00CB, 0x00C8, 0x00CD, 0x00CE, 0x00CF,
+        0x00CC, 0x0060, 0x003A, 0x0023, 0x0040, 0x0027, 0x003D, 0x0022,
+        // 80-8F
+        0x00D8, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+        0x0068, 0x0069, 0x00AB, 0x00BB, 0x00F0, 0x00FD, 0x00FE, 0x00B1,
+        // 90-9F
+        0x00B0, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 0x0070,
+        0x0071, 0x0072, 0x00AA, 0x00BA, 0x00E6, 0x00B8, 0x00C6, 0x00A4,
+        // A0-AF
+        0x00B5, 0x007E, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078,
+        0x0079, 0x007A, 0x00A1, 0x00BF, 0x00D0, 0x00DD, 0x00DE, 0x00AE,
+        // B0-BF
+        0x00A2, 0x00A3, 0x00A5, 0x00B7, 0x00A9, 0x00A7, 0x00B6, 0x00BC,
+        0x00BD, 0x00BE, 0x00AC, 0x007C, 0x00AF, 0x00A8, 0x00B4, 0x00D7,
+        // C0-CF
+        0x011F, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+        0x0048, 0x0049, 0x00AD, 0x00F4, 0x00F6, 0x00F2, 0x00F3, 0x00F5,
+        // D0-DF
+        0x0131, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F, 0x0050,
+        0x0051, 0x0052, 0x00B9, 0x00FB, 0x00FC, 0x00F9, 0x00FA, 0x00FF,
+        // E0-EF
+        0x015F, 0x00F7, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058,
+        0x0059, 0x005A, 0x00B2, 0x00D4, 0x00D6, 0x00D2, 0x00D3, 0x00D5,
+        // F0-FF
+        0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+        0x0038, 0x0039, 0x00B3, 0x00DB, 0x00DC, 0x00D9, 0x00DA, 0x009F,
+    };
+
+    public Cp905() {
+        super(ID, DESCRIPTION, CPGID, GCSGID, "905", MAPPING);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/EbcdicTranslator.java

@@ -1,10 +1,13 @@
 package haus.nightmare.lib3270j.charset;
 
-import java.util.List;
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * EBCDIC ↔ Unicode character translator conforming to IBM Host On-Demand (HoD v14).
  * Modular architecture delegating to pluggable CodePage implementations (SBCS and DBCS).
+ * Supports custom per-instance character translation override tables and complete
+ * IBM 3270 APL / Graphic Escape (GA23-0059) character mappings.
  * Default: Code Page 037 (US/Canada EBCDIC).
  */
 public class EbcdicTranslator {
@@ -15,6 +18,8 @@ public class EbcdicTranslator {
     public static final int[] CP037_TO_UNICODE = Cp037.MAPPING;
 
     private CodePage activeCodePage;
+    private final Map<Integer, Character> customEbcdicToUnicode = new ConcurrentHashMap<>();
+    private final Map<Character, Integer> customUnicodeToEbcdic = new ConcurrentHashMap<>();
 
     public EbcdicTranslator() {
         this("037");
@@ -85,6 +90,107 @@ public class EbcdicTranslator {
         return isDBCSCodePage();
     }
 
+    // =========================================================================
+    // Custom Character Translation Overrides
+    // =========================================================================
+
+    /**
+     * Set a bidirectional custom character translation override.
+     * Maps an EBCDIC byte value to a Unicode character, and vice versa.
+     */
+    public synchronized void setCustomOverride(int ebcdicByte, char unicodeChar) {
+        int b = ebcdicByte & 0xFF;
+        customEbcdicToUnicode.put(b, unicodeChar);
+        customUnicodeToEbcdic.put(unicodeChar, b);
+    }
+
+    /**
+     * Set a one-way custom EBCDIC byte to Unicode character override.
+     */
+    public synchronized void setCustomEbcdicToUnicodeOverride(int ebcdicByte, char unicodeChar) {
+        customEbcdicToUnicode.put(ebcdicByte & 0xFF, unicodeChar);
+    }
+
+    /**
+     * Set a one-way custom Unicode character to EBCDIC byte override.
+     */
+    public synchronized void setCustomUnicodeToEbcdicOverride(char unicodeChar, int ebcdicByte) {
+        customUnicodeToEbcdic.put(unicodeChar, ebcdicByte & 0xFF);
+    }
+
+    /**
+     * Set custom translation overrides in bulk.
+     */
+    public synchronized void setCustomOverrides(Map<Integer, Character> ebcToUni, Map<Character, Integer> uniToEbc) {
+        if (ebcToUni != null) {
+            for (Map.Entry<Integer, Character> entry : ebcToUni.entrySet()) {
+                if (entry.getKey() != null && entry.getValue() != null) {
+                    setCustomOverride(entry.getKey(), entry.getValue());
+                }
+            }
+        }
+        if (uniToEbc != null) {
+            for (Map.Entry<Character, Integer> entry : uniToEbc.entrySet()) {
+                if (entry.getKey() != null && entry.getValue() != null) {
+                    setCustomUnicodeToEbcdicOverride(entry.getKey(), entry.getValue());
+                }
+            }
+        }
+    }
+
+    /**
+     * Remove custom translation override for a specific EBCDIC byte.
+     */
+    public synchronized void removeCustomOverride(int ebcdicByte) {
+        Character removed = customEbcdicToUnicode.remove(ebcdicByte & 0xFF);
+        if (removed != null) {
+            customUnicodeToEbcdic.remove(removed);
+        }
+    }
+
+    /**
+     * Remove custom translation override for a specific Unicode character.
+     */
+    public synchronized void removeCustomUnicodeOverride(char unicodeChar) {
+        Integer removed = customUnicodeToEbcdic.remove(unicodeChar);
+        if (removed != null) {
+            customEbcdicToUnicode.remove(removed);
+        }
+    }
+
+    /**
+     * Clear all registered custom translation overrides.
+     */
+    public synchronized void clearCustomOverrides() {
+        customEbcdicToUnicode.clear();
+        customUnicodeToEbcdic.clear();
+    }
+
+    /**
+     * Check if any custom translation overrides are active.
+     */
+    public boolean hasCustomOverrides() {
+        return !customEbcdicToUnicode.isEmpty() || !customUnicodeToEbcdic.isEmpty();
+    }
+
+    /**
+     * Get an unmodifiable view of active EBCDIC-to-Unicode custom overrides.
+     */
+    public Map<Integer, Character> getCustomEbcdicToUnicodeOverrides() {
+        return Collections.unmodifiableMap(new HashMap<>(customEbcdicToUnicode));
+    }
+
+    /**
+     * Get an unmodifiable view of active Unicode-to-EBCDIC custom overrides.
+     */
+    public Map<Character, Integer> getCustomUnicodeToEbcdicOverrides() {
+        return Collections.unmodifiableMap(new HashMap<>(customUnicodeToEbcdic));
+    }
+
+    // =========================================================================
+    // Translation Operations
+    // =========================================================================
+
     /**
      * Translate double-byte EBCDIC pair (b1, b2) to Unicode.
      */
@@ -100,10 +206,15 @@ public class EbcdicTranslator {
     }
 
     /**
-     * Translate EBCDIC byte to Unicode character using active code page.
+     * Translate EBCDIC byte to Unicode character using active code page and custom overrides.
      */
     public char ebcdicToUnicode(int ebc) {
-        return activeCodePage.ebcdicToUnicode(ebc);
+        int b = ebc & 0xFF;
+        Character custom = customEbcdicToUnicode.get(b);
+        if (custom != null) {
+            return custom;
+        }
+        return activeCodePage.ebcdicToUnicode(b);
     }
 
     /**
@@ -121,10 +232,14 @@ public class EbcdicTranslator {
     }
 
     /**
-     * Translate Unicode character to EBCDIC byte using active code page.
+     * Translate Unicode character to EBCDIC byte using active code page and custom overrides.
      * Returns -1 if the character cannot be mapped.
      */
     public int unicodeToEbcdic(char unicode) {
+        Integer custom = customUnicodeToEbcdic.get(unicode);
+        if (custom != null) {
+            return custom;
+        }
         return activeCodePage.unicodeToEbcdic(unicode);
     }
 
@@ -132,20 +247,37 @@ public class EbcdicTranslator {
      * Translate Unicode character to EBCDIC, returning EBCDIC space (0x40) if unmappable.
      */
     public byte unicodeToEbcdicSafe(char unicode) {
-        return activeCodePage.unicodeToEbcdicSafe(unicode);
+        int ebc = unicodeToEbcdic(unicode);
+        return (byte) (ebc >= 0 ? ebc : 0x40);
     }
 
     /**
-     * Translate a byte array from EBCDIC to a Unicode string using active code page.
+     * Translate a byte array from EBCDIC to a Unicode string using active code page and overrides.
      */
     public String ebcdicToString(byte[] ebcdic, int offset, int length) {
+        if (ebcdic == null || length <= 0) return "";
+        if (hasCustomOverrides() || !(activeCodePage instanceof AbstractDBCSCodePage)) {
+            char[] chars = new char[length];
+            for (int i = 0; i < length; i++) {
+                chars[i] = ebcdicToUnicode(ebcdic[offset + i]);
+            }
+            return new String(chars);
+        }
         return activeCodePage.ebcdicToString(ebcdic, offset, length);
     }
 
     /**
-     * Translate a Unicode string to EBCDIC byte array using active code page.
+     * Translate a Unicode string to EBCDIC byte array using active code page and overrides.
      */
     public byte[] stringToEbcdic(String s) {
+        if (s == null || s.isEmpty()) return new byte[0];
+        if (hasCustomOverrides() || !(activeCodePage instanceof AbstractDBCSCodePage)) {
+            byte[] bytes = new byte[s.length()];
+            for (int i = 0; i < s.length(); i++) {
+                bytes[i] = unicodeToEbcdicSafe(s.charAt(i));
+            }
+            return bytes;
+        }
         return activeCodePage.stringToEbcdic(s);
     }
 
@@ -169,7 +301,7 @@ public class EbcdicTranslator {
      */
     public char mapAPL(int ebcdicCodePoint) {
         switch (ebcdicCodePoint & 0xFF) {
-            // Box-drawing line and corner characters (standard IBM 3270 GE / APL)
+            // Standard Box-Drawing Lines, Corners, T-Junctions, and Crosses
             case 0xA2: return '\u2500'; // Horizontal Line 's' -> '─'
             case 0x85: return '\u2502'; // Vertical Line 'e' -> '│'
             case 0xC5: return '\u250C'; // Top Left 'E' -> '┌'
@@ -182,7 +314,7 @@ public class EbcdicTranslator {
             case 0xD7: return '\u2534'; // T-Junction Bottom 'P' -> '┴'
             case 0xCB: return '\u253C'; // Cross -> '┼'
 
-            // Special math and APL symbols (matching x3270 cg.c / apl.c)
+            // Mathematical Relations and Punctuation
             case 0x8C: return '\u2264'; // Less-than or equal '≤'
             case 0xAE: return '\u2265'; // Greater-than or equal '≥'
             case 0xBE: return '\u2260'; // Not equal '≠'
@@ -194,11 +326,58 @@ public class EbcdicTranslator {
             case 0xB1: return '\u00B1'; // Plus-minus '±'
             case 0xB2: return '\u00B2'; // Superscript 2 '²'
             case 0xB3: return '\u00B3'; // Superscript 3 '³'
-            case 0xAF: return '\u00AF'; // Overbar '¯'
+            case 0xAF: return '\u00AF'; // Overbar / High Minus '¯'
             case 0xBA: return '\u03A9'; // Omega 'Ω'
             case 0xBF: return '\u00B5'; // Micro 'µ'
             case 0x5F: return '\u00AC'; // Not sign '¬'
 
+            // IBM 3270 APL Operational & Structural Glyphs
+            case 0x80: return '\u22C4'; // Diamond '⋄'
+            case 0x81: return '\u237A'; // APL Alpha '⍺'
+            case 0x82: return '\u22A5'; // Up Tack / Decode '⊥'
+            case 0x83: return '\u2229'; // Intersection '∩'
+            case 0x84: return '\u230A'; // Floor '⌊'
+            case 0x86: return '\u2286'; // Subset or equal '⊆'
+            case 0x87: return '\u2207'; // Del / Grad '∇'
+            case 0x88: return '\u2206'; // Delta '∆'
+            case 0x89: return '\u2373'; // Iota '⍳'
+            case 0x8A: return '\u2192'; // Right Arrow '→'
+            case 0x8B: return '\u235E'; // Quote Quad '⍞'
+            case 0x8E: return '\u00D7'; // Multiply '×'
+            case 0x8F: return '\u00F7'; // Divide '÷'
+            case 0x90: return '\u235F'; // Circle Star / Log '⍟'
+            case 0x91: return '\u2339'; // Quad Divide / Domino '⌹'
+            case 0x92: return '\u22A4'; // Down Tack / Encode '⊤'
+            case 0x93: return '\u222A'; // Union '∪'
+            case 0x94: return '\u2308'; // Ceiling '⌈'
+            case 0x95: return '\u2374'; // Rho / Shape '⍴'
+            case 0x96: return '\u2375'; // APL Omega '⍵'
+            case 0x97: return '\u2260'; // Not equal '≠'
+            case 0x98: return '\u2377'; // Epsilon Underbar '⍷'
+            case 0x99: return '\u25CB'; // Circle '○'
+            case 0x9A: return '\u2190'; // Left Arrow '←'
+            case 0x9B: return '\u2359'; // Delta Underbar '⍙'
+            case 0x9C: return '\u234B'; // Grade Up '⍋'
+            case 0x9E: return '\u2352'; // Grade Down '⍒'
+            case 0x9F: return '\u235D'; // Lamp / Comment '⍝'
+            case 0xA1: return '\u00A8'; // Diaeresis '¨'
+            case 0xA4: return '\u2336'; // I-Beam '⌶'
+            case 0xA5: return '\u2355'; // Thorn / Format '⍕'
+            case 0xA6: return '\u2282'; // Left Shoe / Enclose '⊂'
+            case 0xA7: return '\u2283'; // Right Shoe / Disclose '⊃'
+            case 0xA8: return '\u2191'; // Up Arrow / Take '↑'
+            case 0xA9: return '\u2193'; // Down Arrow / Drop '↓'
+            case 0xAA: return '\u2395'; // Quad '⎕'
+            case 0xAB: return '\u234E'; // Execute / Hydra '⍎'
+            case 0xAC: return '\u2349'; // Transpose / Circle Slope '⍉'
+            case 0xB4: return '\u2296'; // Circle Bar / Reverse '⊖'
+            case 0xB5: return '\u236A'; // Comma Bar / Table '⍪'
+            case 0xB6: return '\u236B'; // Del Tilde '⍫'
+            case 0xB7: return '\u236C'; // Zilde '⍬'
+            case 0xB9: return '\u233F'; // Slash Bar '⌿'
+            case 0xBB: return '\u2340'; // Backslash Bar '⍀'
+            case 0xBC: return '\u2338'; // Quad Equal '⌸'
+
             default: return ebcdicToUnicode(ebcdicCodePoint & 0xFF);
         }
     }

lib3270j/src/main/java/haus/nightmare/lib3270j/datastream/DataStreamProcessor.java

@@ -109,6 +109,10 @@ public class DataStreamProcessor {
         screenListeners.add(l);
     }
 
+    public void removeScreenUpdateListener(ScreenUpdateListener l) {
+        screenListeners.remove(l);
+    }
+
     /**
      * Process a 3270 data stream record.
      * 

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLConnection.java

@@ -0,0 +1,13 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+
+/**
+ * IBM Host On-Demand ECLConnection drop-in compatibility class.
+ */
+public class ECLConnection extends haus.nightmare.lib3270j.ecl.ECLConnection {
+
+    public ECLConnection(haus.nightmare.lib3270j.ecl.ECLSession session, Telnet3270Client client) {
+        super(session, client);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLConstants.java

@@ -0,0 +1,7 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+/**
+ * IBM Host On-Demand ECLConstants compatibility interface.
+ */
+public interface ECLConstants extends haus.nightmare.lib3270j.ecl.ECLConstants {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLErrors.java

@@ -0,0 +1,7 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+/**
+ * IBM Host On-Demand ECLErrors compatibility interface.
+ */
+public interface ECLErrors extends haus.nightmare.lib3270j.ecl.ECLErrors {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLException.java

@@ -0,0 +1,21 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+/**
+ * IBM Host On-Demand ECLException compatibility class.
+ */
+public class ECLException extends haus.nightmare.lib3270j.ecl.ECLException {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLException(int errorCode, String message) {
+        super(errorCode, message);
+    }
+
+    public ECLException(int errorCode, String message, Throwable cause) {
+        super(errorCode, message, cause);
+    }
+
+    public ECLException(String message) {
+        super(message);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLField.java

@@ -0,0 +1,11 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+/**
+ * IBM Host On-Demand ECLField drop-in compatibility class.
+ */
+public class ECLField extends haus.nightmare.lib3270j.ecl.ECLField {
+
+    public ECLField(haus.nightmare.lib3270j.ecl.ECLPS ps, int startPos, int dataStart, int endPos, int length, byte attribute) {
+        super(ps, startPos, dataStart, endPos, length, attribute);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLFieldList.java

@@ -0,0 +1,13 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+/**
+ * IBM Host On-Demand ECLFieldList drop-in compatibility class.
+ */
+public class ECLFieldList extends haus.nightmare.lib3270j.ecl.ECLFieldList {
+
+    public ECLFieldList(haus.nightmare.lib3270j.ecl.ECLPS ps, ScreenBuffer screen) {
+        super(ps, screen);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLOIA.java

@@ -0,0 +1,15 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.input.InputProcessor;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import haus.nightmare.lib3270j.telnet.TelnetFSM;
+
+/**
+ * IBM Host On-Demand ECLOIA drop-in compatibility class.
+ */
+public class ECLOIA extends haus.nightmare.lib3270j.ecl.ECLOIA {
+
+    public ECLOIA(ScreenBuffer screen, InputProcessor inputProcessor, TelnetFSM fsm) {
+        super(screen, inputProcessor, fsm);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLPS.java

@@ -0,0 +1,15 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.input.InputProcessor;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+/**
+ * IBM Host On-Demand ECLPS drop-in compatibility class.
+ */
+public class ECLPS extends haus.nightmare.lib3270j.ecl.ECLPS {
+
+    public ECLPS(ScreenBuffer screen, InputProcessor inputProcessor, EbcdicTranslator translator) {
+        super(screen, inputProcessor, translator);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLScreenDesc.java

@@ -0,0 +1,11 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+/**
+ * IBM Host On-Demand ECLScreenDesc drop-in compatibility class.
+ */
+public class ECLScreenDesc extends haus.nightmare.lib3270j.ecl.ECLScreenDesc {
+
+    public ECLScreenDesc() {
+        super();
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLSession.java

@@ -0,0 +1,37 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.TerminalModel;
+
+import java.util.Properties;
+
+/**
+ * IBM Host On-Demand ECLSession drop-in compatibility class.
+ */
+public class ECLSession extends haus.nightmare.lib3270j.ecl.ECLSession {
+
+    public ECLSession() {
+        super();
+    }
+
+    public ECLSession(ConnectionConfig config) {
+        super(config);
+    }
+
+    public ECLSession(String host, int port, TerminalModel model) {
+        super(host, port, model);
+    }
+
+    public ECLSession(String host, int port, TerminalModel model, boolean useTls) {
+        super(host, port, model, useTls);
+    }
+
+    public ECLSession(Properties props) {
+        super(props);
+    }
+
+    public ECLSession(Telnet3270Client client) {
+        super(client);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/ECLXfer.java

@@ -0,0 +1,16 @@
+package haus.nightmare.lib3270j.eNetwork.ECL;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.datastream.DataStreamProcessor;
+import haus.nightmare.lib3270j.input.InputProcessor;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+/**
+ * IBM Host On-Demand ECLXfer drop-in compatibility class.
+ */
+public class ECLXfer extends haus.nightmare.lib3270j.ecl.ECLXfer {
+
+    public ECLXfer(ScreenBuffer screen, InputProcessor input, DataStreamProcessor dsProcessor, EbcdicTranslator translator) {
+        super(screen, input, dsProcessor, translator);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLCommEvent.java

@@ -0,0 +1,16 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+import haus.nightmare.lib3270j.ConnectionState;
+
+/**
+ * IBM Host On-Demand ECLCommEvent compatibility class.
+ */
+public class ECLCommEvent extends haus.nightmare.lib3270j.ecl.ECLCommEvent {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLCommEvent(Object source, int eventType, ConnectionState oldState, ConnectionState newState,
+                        String message, String deviceType, String deviceName) {
+        super(source, eventType, oldState, newState, message, deviceType, deviceName);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLCommListener.java

@@ -0,0 +1,7 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLCommListener compatibility interface.
+ */
+public interface ECLCommListener extends haus.nightmare.lib3270j.ecl.ECLCommListener {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLCommNotify.java

@@ -0,0 +1,8 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLCommNotify compatibility interface.
+ */
+@FunctionalInterface
+public interface ECLCommNotify extends haus.nightmare.lib3270j.ecl.ECLCommNotify {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLOIAEvent.java

@@ -0,0 +1,14 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLOIAEvent compatibility class.
+ */
+public class ECLOIAEvent extends haus.nightmare.lib3270j.ecl.ECLOIAEvent {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLOIAEvent(Object source, int eventType, int inputInhibited, int alphanumericType,
+                       boolean insertMode, String statusString) {
+        super(source, eventType, inputInhibited, alphanumericType, insertMode, statusString);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLOIAListener.java

@@ -0,0 +1,7 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLOIAListener compatibility interface.
+ */
+public interface ECLOIAListener extends haus.nightmare.lib3270j.ecl.ECLOIAListener {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLPSEvent.java

@@ -0,0 +1,18 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLPSEvent compatibility class.
+ */
+public class ECLPSEvent extends haus.nightmare.lib3270j.ecl.ECLPSEvent {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLPSEvent(Object source, int eventType, int startRow, int startCol, int endRow, int endCol,
+                      int oldCursorAddress, int newCursorAddress, int rows, int cols, boolean fullUpdate) {
+        super(source, eventType, startRow, startCol, endRow, endCol, oldCursorAddress, newCursorAddress, rows, cols, fullUpdate);
+    }
+
+    public ECLPSEvent(Object source, int eventType) {
+        super(source, eventType);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/eNetwork/ECL/event/ECLPSListener.java

@@ -0,0 +1,7 @@
+package haus.nightmare.lib3270j.eNetwork.ECL.event;
+
+/**
+ * IBM Host On-Demand ECLPSListener compatibility interface.
+ */
+public interface ECLPSListener extends haus.nightmare.lib3270j.ecl.ECLPSListener {
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLCommEvent.java

@@ -0,0 +1,73 @@
+package haus.nightmare.lib3270j.ecl;
+
+import haus.nightmare.lib3270j.ConnectionState;
+import java.util.EventObject;
+
+/**
+ * Event object dispatched on communication lifecycle and state transitions.
+ */
+public class ECLCommEvent extends EventObject {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final int COMM_CONNECTING    = 1;
+    public static final int COMM_CONNECTED     = 2;
+    public static final int COMM_DISCONNECTED  = 3;
+    public static final int COMM_STATE_CHANGED = 4;
+    public static final int COMM_ERROR         = 5;
+    public static final int COMM_UNBOUND       = 6;
+    public static final int COMM_BIND          = 7;
+
+    public static final int EVENT_CONNECTING    = COMM_CONNECTING;
+    public static final int EVENT_CONNECTED     = COMM_CONNECTED;
+    public static final int EVENT_DISCONNECTED  = COMM_DISCONNECTED;
+    public static final int EVENT_STATE_CHANGED = COMM_STATE_CHANGED;
+    public static final int EVENT_ERROR         = COMM_ERROR;
+    public static final int EVENT_UNBOUND       = COMM_UNBOUND;
+    public static final int EVENT_BIND          = COMM_BIND;
+
+    private final int eventType;
+    private final ConnectionState oldState;
+    private final ConnectionState newState;
+    private final String message;
+    private final String deviceType;
+    private final String deviceName;
+
+    public ECLCommEvent(Object source, int eventType, ConnectionState oldState, ConnectionState newState,
+                        String message, String deviceType, String deviceName) {
+        super(source);
+        this.eventType = eventType;
+        this.oldState = oldState;
+        this.newState = newState;
+        this.message = message;
+        this.deviceType = deviceType;
+        this.deviceName = deviceName;
+    }
+
+    public int getEventType() { return eventType; }
+    public ConnectionState getOldState() { return oldState; }
+    public ConnectionState getNewState() { return newState; }
+    public String getMessage() { return message; }
+    public String getErrorMessage() { return message; }
+    public String getDeviceType() { return deviceType; }
+    public String getDeviceName() { return deviceName; }
+    public String getLUName() { return deviceName; }
+
+    public boolean isConnected() {
+        return newState != null && newState.isConnected();
+    }
+
+    public boolean isFullSession() {
+        return newState != null && newState.isFullSession();
+    }
+
+    public ECLConnection getConnection() {
+        return (getSource() instanceof ECLConnection) ? (ECLConnection) getSource() : null;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ECLCommEvent[type=%d, oldState=%s, newState=%s, msg='%s', dev='%s', lu='%s']",
+                eventType, oldState, newState, message, deviceType, deviceName);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLCommListener.java

@@ -0,0 +1,31 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * Listener interface for communication lifecycle events.
+ */
+public interface ECLCommListener {
+
+    /**
+     * Called when the communication connection state or status changes.
+     * @param event ECLCommEvent containing transition details
+     */
+    void commEvent(ECLCommEvent event);
+
+    /**
+     * Called specifically when the connection is established.
+     * @param event ECLCommEvent
+     */
+    default void commConnected(ECLCommEvent event) {}
+
+    /**
+     * Called specifically when the connection is disconnected.
+     * @param event ECLCommEvent
+     */
+    default void commDisconnected(ECLCommEvent event) {}
+
+    /**
+     * Called specifically when a communication error occurs.
+     * @param event ECLCommEvent
+     */
+    default void commError(ECLCommEvent event) {}
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLCommNotify.java

@@ -0,0 +1,14 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * IBM Host On-Demand ECLCommNotify callback interface.
+ */
+@FunctionalInterface
+public interface ECLCommNotify {
+
+    /**
+     * Notification callback invoked on connection state change.
+     * @param connected true if session is connected, false otherwise
+     */
+    void CommNotify(boolean connected);
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLConnection.java

@@ -0,0 +1,230 @@
+package haus.nightmare.lib3270j.ecl;
+
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.TerminalModel;
+import haus.nightmare.lib3270j.listener.ConnectionListener;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * Communication and session connection state management conforming to IBM Host On-Demand ECL.
+ */
+public class ECLConnection {
+
+    private final ECLSession session;
+    private final Telnet3270Client client;
+    private final List<ECLCommListener> commListeners = new CopyOnWriteArrayList<>();
+    private final List<ECLCommNotify> commNotifies = new CopyOnWriteArrayList<>();
+
+    public ECLConnection(ECLSession session, Telnet3270Client client) {
+        this.session = session;
+        this.client = client;
+
+        if (client != null) {
+            client.addConnectionListener(new ConnectionListener() {
+                @Override
+                public void onConnectionStateChanged(ConnectionState oldState, ConnectionState newState) {
+                    int eventType = ECLCommEvent.COMM_STATE_CHANGED;
+                    if (newState.isFullSession()) {
+                        eventType = ECLCommEvent.COMM_CONNECTED;
+                    } else if (newState == ConnectionState.NOT_CONNECTED) {
+                        eventType = ECLCommEvent.COMM_DISCONNECTED;
+                    } else if (newState.isHalfConnected()) {
+                        eventType = ECLCommEvent.COMM_CONNECTING;
+                    }
+
+                    String devType = (client.getTelnetFSM() != null) ? client.getTelnetFSM().getConnectedType() : null;
+                    String lu = (client.getTelnetFSM() != null) ? client.getTelnetFSM().getConnectedLu() : null;
+                    ECLCommEvent event = new ECLCommEvent(ECLConnection.this, eventType, oldState, newState,
+                            "State: " + newState, devType, lu);
+
+                    notifyCommEvent(event);
+                }
+
+                @Override
+                public void onConnectionError(String message) {
+                    ConnectionState state = client.getConnectionState();
+                    ECLCommEvent event = new ECLCommEvent(ECLConnection.this, ECLCommEvent.COMM_ERROR,
+                            state, state, message, null, null);
+                    notifyCommEvent(event);
+                }
+
+                @Override
+                public void onTN3270ENegotiated(String deviceType, String deviceName) {
+                    ConnectionState state = client.getConnectionState();
+                    ECLCommEvent event = new ECLCommEvent(ECLConnection.this, ECLCommEvent.COMM_BIND,
+                            state, state, "TN3270E Negotiated", deviceType, deviceName);
+                    notifyCommEvent(event);
+                }
+            });
+        }
+    }
+
+    public ECLSession GetSession() { return session; }
+    public ECLSession getSession() { return session; }
+
+    public Telnet3270Client GetClient() { return client; }
+    public Telnet3270Client getClient() { return client; }
+
+    public String GetHost() {
+        return (client != null && client.getConfig() != null) ? client.getConfig().getHost() : "";
+    }
+    public String getHost() { return GetHost(); }
+
+    public int GetPort() {
+        return (client != null && client.getConfig() != null) ? client.getConfig().getPort() : 23;
+    }
+    public int getPort() { return GetPort(); }
+
+    public String GetCodePage() {
+        return (client != null) ? client.getCodePage() : "037";
+    }
+    public String getCodePage() { return GetCodePage(); }
+
+    public TerminalModel GetModel() {
+        return (client != null && client.getConfig() != null) ? client.getConfig().getModel() : TerminalModel.IBM_3279_4;
+    }
+    public TerminalModel getModel() { return GetModel(); }
+
+    public String GetLUName() {
+        if (client != null && client.getTelnetFSM() != null && client.getTelnetFSM().getConnectedLu() != null) {
+            return client.getTelnetFSM().getConnectedLu();
+        }
+        return (client != null && client.getConfig() != null) ? client.getConfig().getLuName() : null;
+    }
+    public String getLUName() { return GetLUName(); }
+
+    public String GetDevName() { return GetLUName(); }
+    public String getDevName() { return GetLUName(); }
+
+    public String GetConnType() {
+        if (client == null) return "UNKNOWN";
+        ConnectionState cs = client.getConnectionState();
+        if (cs.isTn3270e()) return "TN3270E";
+        if (cs.is3270()) return "TN3270";
+        if (cs.isNvt()) return "NVT";
+        if (client.getConfig() != null) {
+            return client.getConfig().isTn3270eEnabled() ? "TN3270E" : "TN3270";
+        }
+        return "UNKNOWN";
+    }
+    public String getConnType() { return GetConnType(); }
+
+    public ConnectionState GetState() {
+        return (client != null) ? client.getConnectionState() : ConnectionState.NOT_CONNECTED;
+    }
+    public ConnectionState getState() { return GetState(); }
+
+    public int GetStateCode() {
+        return GetState().toHoDStateCode();
+    }
+    public int getStateCode() { return GetStateCode(); }
+
+    public boolean IsConnected() {
+        return client != null && client.isConnected();
+    }
+    public boolean isConnected() { return IsConnected(); }
+
+    public boolean IsStarted() {
+        return IsConnected();
+    }
+    public boolean isStarted() { return IsStarted(); }
+
+    public boolean IsReady() {
+        return client != null && client.getConnectionState().isFullSession();
+    }
+    public boolean isReady() { return IsReady(); }
+
+    public boolean IsConnecting() {
+        return client != null && client.getConnectionState().isHalfConnected();
+    }
+    public boolean isConnecting() { return IsConnecting(); }
+
+    public boolean IsDisconnecting() {
+        return client == null || client.getConnectionState() == ConnectionState.NOT_CONNECTED;
+    }
+    public boolean isDisconnecting() { return IsDisconnecting(); }
+
+    public boolean IsSSL() {
+        return client != null && client.getConfig() != null && client.getConfig().isUseTls();
+    }
+    public boolean isSSL() { return IsSSL(); }
+
+    public boolean IsTLS() { return IsSSL(); }
+    public boolean isTLS() { return IsSSL(); }
+
+    public void Connect() throws IOException {
+        if (client != null) {
+            client.connect();
+        }
+    }
+    public void connect() throws IOException { Connect(); }
+
+    public void Disconnect() {
+        if (client != null) {
+            client.disconnect();
+        }
+    }
+    public void disconnect() { Disconnect(); }
+
+    public void StartCommunication() throws IOException { Connect(); }
+    public void startCommunication() throws IOException { Connect(); }
+
+    public void StopCommunication() { Disconnect(); }
+    public void stopCommunication() { Disconnect(); }
+
+    // ========== Event Listener Management ==========
+
+    public void RegisterCommEvent(ECLCommListener listener) {
+        if (listener != null && !commListeners.contains(listener)) {
+            commListeners.add(listener);
+        }
+    }
+    public void registerCommEvent(ECLCommListener listener) { RegisterCommEvent(listener); }
+
+    public void UnregisterCommEvent(ECLCommListener listener) {
+        commListeners.remove(listener);
+    }
+    public void unregisterCommEvent(ECLCommListener listener) { UnregisterCommEvent(listener); }
+
+    public void RegisterCommEvent(ECLCommNotify notify, boolean sync) {
+        if (notify != null && !commNotifies.contains(notify)) {
+            commNotifies.add(notify);
+        }
+    }
+    public void registerCommEvent(ECLCommNotify notify, boolean sync) { RegisterCommEvent(notify, sync); }
+
+    public void UnregisterCommEvent(ECLCommNotify notify) {
+        commNotifies.remove(notify);
+    }
+    public void unregisterCommEvent(ECLCommNotify notify) { UnregisterCommEvent(notify); }
+
+    private void notifyCommEvent(ECLCommEvent event) {
+        for (ECLCommListener l : commListeners) {
+            try {
+                l.commEvent(event);
+                if (event.getEventType() == ECLCommEvent.COMM_CONNECTED) {
+                    l.commConnected(event);
+                } else if (event.getEventType() == ECLCommEvent.COMM_DISCONNECTED) {
+                    l.commDisconnected(event);
+                } else if (event.getEventType() == ECLCommEvent.COMM_ERROR) {
+                    l.commError(event);
+                }
+            } catch (Exception ignored) {}
+        }
+        for (ECLCommNotify n : commNotifies) {
+            try {
+                n.CommNotify(event.isConnected());
+            } catch (Exception ignored) {}
+        }
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ECLConnection[host=%s, port=%d, state=%s, lu=%s, ssl=%b]",
+                GetHost(), GetPort(), GetState(), GetLUName(), IsSSL());
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLErrors.java

@@ -0,0 +1,21 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * Common error codes for IBM Host On-Demand Emulator Class Library (ECL) emulation.
+ */
+public interface ECLErrors {
+    int ECL_ERR_NONE                  = 0;
+    int ECL_ERR_COMM_NOT_CONNECTED   = 1;
+    int ECL_ERR_COMM_TIMEOUT         = 2;
+    int ECL_ERR_COMM_FAILED          = 3;
+    int ECL_ERR_SCREEN_MATCH_TIMEOUT = 4;
+    int ECL_ERR_PS_NOT_AVAILABLE     = 5;
+    int ECL_ERR_OIA_NOT_AVAILABLE    = 6;
+    int ECL_ERR_INVALID_PARAM        = 7;
+    int ECL_ERR_INVALID_POSITION     = 8;
+    int ECL_ERR_FIELD_NOT_FOUND      = 9;
+    int ECL_ERR_KEYBOARD_LOCKED      = 10;
+    int ECL_ERR_XFER_FAILED          = 11;
+    int ECL_ERR_SESSION_ALREADY_OPEN = 12;
+    int ECL_ERR_SESSION_CLOSED       = 13;
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLException.java

@@ -0,0 +1,33 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * Exception class for IBM Host On-Demand ECL operations.
+ */
+public class ECLException extends RuntimeException {
+
+    private static final long serialVersionUID = 1L;
+    private final int errorCode;
+
+    public ECLException(int errorCode, String message) {
+        super(message);
+        this.errorCode = errorCode;
+    }
+
+    public ECLException(int errorCode, String message, Throwable cause) {
+        super(message, cause);
+        this.errorCode = errorCode;
+    }
+
+    public ECLException(String message) {
+        this(ECLErrors.ECL_ERR_COMM_FAILED, message);
+    }
+
+    public int getErrorCode() {
+        return errorCode;
+    }
+
+    @Override
+    public String toString() {
+        return "ECLException[errorCode=" + errorCode + ", message=" + getMessage() + "]";
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLOIA.java

@@ -19,6 +19,7 @@ public class ECLOIA implements ECLConstants {
     private final InputProcessor inputProcessor;
     private final TelnetFSM fsm;
     private final List<ECLOIANotify> listeners = new ArrayList<>();
+    private final List<ECLOIAListener> oiaListeners = new java.util.concurrent.CopyOnWriteArrayList<>();
 
     public interface ECLOIANotify {
         void onOIAChanged(ECLOIA oia);
@@ -44,12 +45,40 @@ public class ECLOIA implements ECLConstants {
         listeners.remove(listener);
     }
 
+    public void RegisterOIAEvent(ECLOIAListener listener) {
+        if (listener != null && !oiaListeners.contains(listener)) {
+            oiaListeners.add(listener);
+        }
+    }
+
+    public void UnregisterOIAEvent(ECLOIAListener listener) {
+        oiaListeners.remove(listener);
+    }
+
+    public void registerOIAListener(ECLOIAListener listener) {
+        RegisterOIAEvent(listener);
+    }
+
+    public void unregisterOIAListener(ECLOIAListener listener) {
+        UnregisterOIAEvent(listener);
+    }
+
     private synchronized void notifyOIAChanged() {
         for (ECLOIANotify l : listeners) {
             try {
                 l.onOIAChanged(this);
             } catch (Exception ignored) {}
         }
+        ECLOIAEvent event = new ECLOIAEvent(this, ECLOIAEvent.OIA_UPDATE, getInputInhibited(),
+                getAlphanumericType(), isInsertMode(), getStatusString());
+        for (ECLOIAListener l : oiaListeners) {
+            try {
+                l.oiaChanged(event);
+                if (inputProcessor != null) {
+                    l.oiaLockStateChanged(event);
+                }
+            } catch (Exception ignored) {}
+        }
     }
 
     public boolean isInsertMode() {
@@ -74,7 +103,7 @@ public class ECLOIA implements ECLConstants {
         return fsm != null && fsm.getConnectionState() != null && !fsm.getConnectionState().isConnected();
     }
 
-    private int inhibitOverride = INHIBIT_NOT_INHIBITED;
+    private int inhibitOverride = -1;
 
     public void setInputInhibited(int reason) {
         if (this.inhibitOverride != reason) {
@@ -145,7 +174,6 @@ public class ECLOIA implements ECLConstants {
     }
 
     public String getStatusString() {
-        if (isCommError()) return "X-COMM";
         int inhibit = getInputInhibited();
         switch (inhibit) {
             case INHIBIT_SYSTEM_LOCK: return "X-SYSTEM";
@@ -165,12 +193,12 @@ public class ECLOIA implements ECLConstants {
      * Returns one of INHIBIT_* constants from ECLConstants.
      */
     public int getInputInhibited() {
+        if (inhibitOverride >= 0) {
+            return inhibitOverride;
+        }
         if (isCommError()) {
             return INHIBIT_COMM_CHECK;
         }
-        if (inhibitOverride != INHIBIT_NOT_INHIBITED) {
-            return inhibitOverride;
-        }
         if (inputProcessor != null && inputProcessor.isKeyboardLocked()) {
             return INHIBIT_SYSTEM_LOCK;
         }
@@ -204,6 +232,14 @@ public class ECLOIA implements ECLConstants {
         return waitForInput(timeoutMs);
     }
 
+    public boolean WaitForSystemAvailable(long timeoutMs) {
+        return waitForSysAvailable(timeoutMs);
+    }
+
+    public boolean WaitForInput(long timeoutMs) {
+        return waitForInput(timeoutMs);
+    }
+
     /**
      * Block until application is available.
      */
@@ -211,6 +247,10 @@ public class ECLOIA implements ECLConstants {
         return waitForInput(timeoutMs);
     }
 
+    public boolean WaitForAppAvailable(long timeoutMs) {
+        return waitForAppAvailable(timeoutMs);
+    }
+
     /**
      * Block until any OIA transition occurs.
      */
@@ -230,4 +270,8 @@ public class ECLOIA implements ECLConstants {
         }
         return getInputInhibited() != initialInhibit;
     }
+
+    public boolean WaitForTransition(long timeoutMs) {
+        return waitForTransition(timeoutMs);
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLOIAEvent.java

@@ -0,0 +1,58 @@
+package haus.nightmare.lib3270j.ecl;
+
+import java.util.EventObject;
+
+/**
+ * Event object dispatched on Operator Information Area (ECLOIA) status changes.
+ */
+public class ECLOIAEvent extends EventObject {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final int OIA_UPDATE          = 1;
+    public static final int OIA_LOCK_CHANGE     = 2;
+    public static final int OIA_COMM_CHANGE     = 3;
+    public static final int OIA_INPUT_INHIBITED = 4;
+
+    public static final int EVENT_UPDATE          = OIA_UPDATE;
+    public static final int EVENT_LOCK_CHANGE     = OIA_LOCK_CHANGE;
+    public static final int EVENT_COMM_CHANGE     = OIA_COMM_CHANGE;
+    public static final int EVENT_INPUT_INHIBITED = OIA_INPUT_INHIBITED;
+
+    private final int eventType;
+    private final int inputInhibited;
+    private final int alphanumericType;
+    private final boolean insertMode;
+    private final String statusString;
+
+    public ECLOIAEvent(Object source, int eventType, int inputInhibited, int alphanumericType,
+                       boolean insertMode, String statusString) {
+        super(source);
+        this.eventType = eventType;
+        this.inputInhibited = inputInhibited;
+        this.alphanumericType = alphanumericType;
+        this.insertMode = insertMode;
+        this.statusString = statusString;
+    }
+
+    public int getEventType() { return eventType; }
+    public int getInputInhibited() { return inputInhibited; }
+    public int getInhibitedReason() { return inputInhibited; }
+    public int getAlphanumericType() { return alphanumericType; }
+    public boolean isInsertMode() { return insertMode; }
+    public String getStatusString() { return statusString; }
+
+    public boolean isInputInhibited() {
+        return inputInhibited != ECLConstants.INHIBIT_NOT_INHIBITED;
+    }
+
+    public ECLOIA getOIA() {
+        return (getSource() instanceof ECLOIA) ? (ECLOIA) getSource() : null;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ECLOIAEvent[type=%d, status='%s', inhibited=%d, insert=%b]",
+                eventType, statusString, inputInhibited, insertMode);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLOIAListener.java

@@ -0,0 +1,25 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * Listener interface for Operator Information Area (ECLOIA) status change events.
+ */
+public interface ECLOIAListener {
+
+    /**
+     * Called when the OIA status, input inhibited flag, or keyboard lock state changes.
+     * @param event ECLOIAEvent containing OIA status information
+     */
+    void oiaChanged(ECLOIAEvent event);
+
+    /**
+     * Called when the input inhibited condition changes specifically.
+     * @param event ECLOIAEvent
+     */
+    default void oiaInhibited(ECLOIAEvent event) {}
+
+    /**
+     * Called when the keyboard lock / unlock state changes specifically.
+     * @param event ECLOIAEvent
+     */
+    default void oiaLockStateChanged(ECLOIAEvent event) {}
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLPS.java

@@ -365,6 +365,69 @@ public class ECLPS implements ECLConstants {
         return charsPasted;
     }
 
+    // ========== ECLPS Event Listener Management ==========
+
+    private final java.util.List<ECLPSListener> psListeners = new java.util.concurrent.CopyOnWriteArrayList<>();
+
+    public void RegisterPSEvent(ECLPSListener listener) {
+        if (listener != null && !psListeners.contains(listener)) {
+            psListeners.add(listener);
+        }
+    }
+
+    public void registerPSEvent(ECLPSListener listener) {
+        RegisterPSEvent(listener);
+    }
+
+    public void UnregisterPSEvent(ECLPSListener listener) {
+        psListeners.remove(listener);
+    }
+
+    public void unregisterPSEvent(ECLPSListener listener) {
+        UnregisterPSEvent(listener);
+    }
+
+    public void notifyPSEvent(ECLPSEvent event) {
+        for (ECLPSListener l : psListeners) {
+            try {
+                l.psChanged(event);
+                if (event.getEventType() == ECLPSEvent.PS_CURSOR) {
+                    l.psCursorMoved(event);
+                } else if (event.getEventType() == ECLPSEvent.PS_ALARM) {
+                    l.psAlarm(event);
+                } else if (event.getEventType() == ECLPSEvent.PS_RESIZE) {
+                    l.psResized(event);
+                } else if (event.getEventType() == ECLPSEvent.PS_CLOSE) {
+                    l.psClosed(event);
+                }
+            } catch (Exception ignored) {}
+        }
+    }
+
+    public void notifyPSUpdate(int startRow, int startCol, int endRow, int endCol, boolean full) {
+        int r = (screen != null) ? screen.getRows() : 0;
+        int c = (screen != null) ? screen.getCols() : 0;
+        int cur = (screen != null) ? screen.getCursorAddress() : 0;
+        notifyPSEvent(new ECLPSEvent(this, ECLPSEvent.PS_UPDATE, startRow, startCol, endRow, endCol, cur, cur, r, c, full));
+    }
+
+    public void notifyCursorMoved(int oldAddress, int newAddress) {
+        int r = (screen != null) ? screen.getRows() : 0;
+        int c = (screen != null) ? screen.getCols() : 0;
+        int row = (c > 0) ? newAddress / c : 0;
+        int col = (c > 0) ? newAddress % c : 0;
+        notifyPSEvent(new ECLPSEvent(this, ECLPSEvent.PS_CURSOR, row, col, row, col, oldAddress, newAddress, r, c, false));
+    }
+
+    public void notifyAlarm() {
+        notifyPSEvent(new ECLPSEvent(this, ECLPSEvent.PS_ALARM));
+    }
+
+    public void notifyScreenResized(int rows, int cols) {
+        int cur = (screen != null) ? screen.getCursorAddress() : 0;
+        notifyPSEvent(new ECLPSEvent(this, ECLPSEvent.PS_RESIZE, 0, 0, rows - 1, cols - 1, cur, cur, rows, cols, true));
+    }
+
     /**
      * Send standard IBM ECL mnemonic keystrokes.
      */
@@ -374,6 +437,21 @@ public class ECLPS implements ECLConstants {
         }
     }
 
+    public void SendKeys(String keys) {
+        sendKeys(keys);
+    }
+
+    public void SendKeys(String keys, int row, int col) {
+        sendKeys(keys, row, col);
+    }
+
+    public void sendKeys(String keys, int row, int col) {
+        if (row > 0 && col > 0) {
+            setCursorPos(row - 1, col - 1);
+        }
+        sendKeys(keys);
+    }
+
     /**
      * Send keystrokes with configurable inter-character or inter-mnemonic delay.
      */
@@ -415,6 +493,30 @@ public class ECLPS implements ECLConstants {
 
     // ========== Synchronization & ECL Automation Waits ==========
 
+    /**
+     * Block until the specified screen descriptor conditions are met.
+     */
+    public boolean waitForScreen(ECLScreenDesc desc, long timeoutMs) {
+        if (desc == null) return true;
+        long start = System.currentTimeMillis();
+        while (System.currentTimeMillis() - start < timeoutMs) {
+            if (desc.Matches(this, null)) {
+                return true;
+            }
+            try {
+                Thread.sleep(25);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                return false;
+            }
+        }
+        return desc.Matches(this, null);
+    }
+
+    public boolean WaitForScreen(ECLScreenDesc desc, long timeoutMs) {
+        return waitForScreen(desc, timeoutMs);
+    }
+
     /**
      * Block until the specified text appears anywhere on the presentation space.
      */
@@ -434,6 +536,10 @@ public class ECLPS implements ECLConstants {
         return searchString(text) >= 0;
     }
 
+    public boolean WaitForScreen(String text, long timeoutMs) {
+        return waitForScreen(text, timeoutMs);
+    }
+
     /**
      * Block until the specified text appears at the given (row, col) coordinate.
      */
@@ -454,6 +560,10 @@ public class ECLPS implements ECLConstants {
         return text.equals(getString(row, col, text.length()));
     }
 
+    public boolean WaitForScreen(String text, int row, int col, long timeoutMs) {
+        return waitForScreen(text, row, col, timeoutMs);
+    }
+
     /**
      * Block until the cursor moves to (row, col).
      */
@@ -472,4 +582,8 @@ public class ECLPS implements ECLConstants {
         }
         return getCursorRow() == row && getCursorCol() == col;
     }
+
+    public boolean WaitForCursor(int row, int col, long timeoutMs) {
+        return waitForCursor(row, col, timeoutMs);
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLPSEvent.java

@@ -0,0 +1,74 @@
+package haus.nightmare.lib3270j.ecl;
+
+import java.util.EventObject;
+
+/**
+ * Event object dispatched on Presentation Space (ECLPS) modifications.
+ */
+public class ECLPSEvent extends EventObject {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final int PS_UPDATE = 1;
+    public static final int PS_CURSOR = 2;
+    public static final int PS_ALARM  = 3;
+    public static final int PS_RESIZE = 4;
+    public static final int PS_CLOSE  = 5;
+
+    public static final int EVENT_UPDATE = PS_UPDATE;
+    public static final int EVENT_CURSOR = PS_CURSOR;
+    public static final int EVENT_ALARM  = PS_ALARM;
+    public static final int EVENT_RESIZE = PS_RESIZE;
+    public static final int EVENT_CLOSE  = PS_CLOSE;
+
+    private final int eventType;
+    private final int startRow;
+    private final int startCol;
+    private final int endRow;
+    private final int endCol;
+    private final int oldCursorAddress;
+    private final int newCursorAddress;
+    private final int rows;
+    private final int cols;
+    private final boolean fullUpdate;
+
+    public ECLPSEvent(Object source, int eventType, int startRow, int startCol, int endRow, int endCol,
+                      int oldCursorAddress, int newCursorAddress, int rows, int cols, boolean fullUpdate) {
+        super(source);
+        this.eventType = eventType;
+        this.startRow = startRow;
+        this.startCol = startCol;
+        this.endRow = endRow;
+        this.endCol = endCol;
+        this.oldCursorAddress = oldCursorAddress;
+        this.newCursorAddress = newCursorAddress;
+        this.rows = rows;
+        this.cols = cols;
+        this.fullUpdate = fullUpdate;
+    }
+
+    public ECLPSEvent(Object source, int eventType) {
+        this(source, eventType, 0, 0, 0, 0, 0, 0, 0, 0, true);
+    }
+
+    public int getEventType() { return eventType; }
+    public int getStartRow() { return startRow; }
+    public int getStartCol() { return startCol; }
+    public int getEndRow() { return endRow; }
+    public int getEndCol() { return endCol; }
+    public int getOldCursorAddress() { return oldCursorAddress; }
+    public int getNewCursorAddress() { return newCursorAddress; }
+    public int getRows() { return rows; }
+    public int getCols() { return cols; }
+    public boolean isFullUpdate() { return fullUpdate; }
+
+    public ECLPS getPS() {
+        return (getSource() instanceof ECLPS) ? (ECLPS) getSource() : null;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ECLPSEvent[type=%d, start=(%d,%d), end=(%d,%d), full=%b]",
+                eventType, startRow, startCol, endRow, endCol, fullUpdate);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLPSListener.java

@@ -0,0 +1,37 @@
+package haus.nightmare.lib3270j.ecl;
+
+/**
+ * Listener interface for Presentation Space (ECLPS) update events.
+ */
+public interface ECLPSListener {
+
+    /**
+     * Called when the presentation space is modified.
+     * @param event ECLPSEvent containing update boundaries and state
+     */
+    void psChanged(ECLPSEvent event);
+
+    /**
+     * Called when the cursor position changes within the presentation space.
+     * @param event ECLPSEvent containing cursor positions
+     */
+    default void psCursorMoved(ECLPSEvent event) {}
+
+    /**
+     * Called when a host sound alarm is triggered.
+     * @param event ECLPSEvent
+     */
+    default void psAlarm(ECLPSEvent event) {}
+
+    /**
+     * Called when the presentation space dimensions change.
+     * @param event ECLPSEvent containing new rows and columns
+     */
+    default void psResized(ECLPSEvent event) {}
+
+    /**
+     * Called when the presentation space is closed / disconnected.
+     * @param event ECLPSEvent
+     */
+    default void psClosed(ECLPSEvent event) {}
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLScreenDesc.java

@@ -0,0 +1,235 @@
+package haus.nightmare.lib3270j.ecl;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Screen descriptor matching engine for IBM Host On-Demand ECL automation.
+ * Encapsulates criteria for matching host screens (strings, rectangular regions, cursor positions,
+ * field counts, and OIA status).
+ */
+public class ECLScreenDesc {
+
+    private final List<ScreenCondition> conditions = new ArrayList<>();
+
+    private interface ScreenCondition {
+        boolean matches(ECLPS ps, ECLOIA oia);
+    }
+
+    public ECLScreenDesc() {}
+
+    /**
+     * Clear all conditions from this descriptor.
+     */
+    public synchronized void Clear() {
+        conditions.clear();
+    }
+
+    public synchronized void clear() {
+        Clear();
+    }
+
+    /**
+     * Add a condition that the given string must appear anywhere on the presentation space.
+     */
+    public synchronized void AddString(String text) {
+        if (text == null || text.isEmpty()) return;
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            return ps.searchString(text) >= 0;
+        });
+    }
+
+    public synchronized void addString(String text) {
+        AddString(text);
+    }
+
+    /**
+     * Add a condition that text must appear at 1-based (row, col) position (case-insensitive by default).
+     */
+    public synchronized void AddString(String text, int row, int col) {
+        AddString(text, row, col, true);
+    }
+
+    public synchronized void addString(String text, int row, int col) {
+        AddString(text, row, col, true);
+    }
+
+    /**
+     * Add a condition that text must appear at (row, col) with case sensitivity control.
+     * Note: 1-based indexing conforming to IBM ECL specification (row 1..rows, col 1..cols).
+     */
+    public synchronized void AddString(String text, int row, int col, boolean caseSense) {
+        if (text == null || text.isEmpty()) return;
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int r = (row > 0) ? row - 1 : 0;
+            int c = (col > 0) ? col - 1 : 0;
+            String onScreen = ps.getString(r, c, text.length());
+            return caseSense ? text.equals(onScreen) : text.equalsIgnoreCase(onScreen);
+        });
+    }
+
+    public synchronized void addString(String text, int row, int col, boolean caseSense) {
+        AddString(text, row, col, caseSense);
+    }
+
+    /**
+     * Add a condition that text must appear at a 1-based linear buffer position.
+     */
+    public synchronized void AddString(String text, int pos, boolean caseSense) {
+        if (text == null || text.isEmpty()) return;
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int p0 = (pos > 0) ? pos - 1 : 0;
+            String onScreen = ps.getString(p0, text.length());
+            return caseSense ? text.equals(onScreen) : text.equalsIgnoreCase(onScreen);
+        });
+    }
+
+    public synchronized void addString(String text, int pos, boolean caseSense) {
+        AddString(text, pos, caseSense);
+    }
+
+    /**
+     * Add a condition that text must appear within a rectangular region.
+     */
+    public synchronized void AddStringInRect(String text, int sRow, int sCol, int eRow, int eCol, boolean caseSense) {
+        if (text == null || text.isEmpty()) return;
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int sr = (sRow > 0) ? sRow - 1 : 0;
+            int sc = (sCol > 0) ? sCol - 1 : 0;
+            int er = (eRow > 0) ? eRow - 1 : 0;
+            int ec = (eCol > 0) ? eCol - 1 : 0;
+            String block = ps.copyString(sr, sc, er, ec);
+            if (block == null) return false;
+            return caseSense ? block.contains(text) : block.toLowerCase().contains(text.toLowerCase());
+        });
+    }
+
+    public synchronized void addStringInRect(String text, int sRow, int sCol, int eRow, int eCol, boolean caseSense) {
+        AddStringInRect(text, sRow, sCol, eRow, eCol, caseSense);
+    }
+
+    /**
+     * Add a condition that the cursor must be located at 1-based (row, col).
+     */
+    public synchronized void AddCursorPos(int row, int col) {
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int r = (row > 0) ? row - 1 : 0;
+            int c = (col > 0) ? col - 1 : 0;
+            return ps.getCursorRow() == r && ps.getCursorCol() == c;
+        });
+    }
+
+    public synchronized void addCursorPos(int row, int col) {
+        AddCursorPos(row, col);
+    }
+
+    /**
+     * Add a condition that the cursor must be located at 1-based linear buffer position.
+     */
+    public synchronized void AddCursorPos(int pos) {
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int p0 = (pos > 0) ? pos - 1 : 0;
+            return ps.getCursorPos() == p0;
+        });
+    }
+
+    public synchronized void addCursorPos(int pos) {
+        AddCursorPos(pos);
+    }
+
+    /**
+     * Add a condition on total field count on the formatted screen.
+     */
+    public synchronized void AddNumFields(int count) {
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            return ps.getFieldList().getFieldCount() == count;
+        });
+    }
+
+    public synchronized void addNumFields(int count) {
+        AddNumFields(count);
+    }
+
+    /**
+     * Add a condition on number of unprotected input fields on the screen.
+     */
+    public synchronized void AddNumInputFields(int count) {
+        conditions.add((ps, oia) -> {
+            if (ps == null) return false;
+            int inputCount = 0;
+            for (ECLField f : ps.getFieldList().getFields()) {
+                if (!f.isProtected()) {
+                    inputCount++;
+                }
+            }
+            return inputCount == count;
+        });
+    }
+
+    public synchronized void addNumInputFields(int count) {
+        AddNumInputFields(count);
+    }
+
+    /**
+     * Add a condition on OIA inhibit status.
+     */
+    public synchronized void AddOIAStatus(int status) {
+        conditions.add((ps, oia) -> {
+            if (oia == null) return true;
+            return oia.getInputInhibited() == status;
+        });
+    }
+
+    public synchronized void addOIAStatus(int status) {
+        AddOIAStatus(status);
+    }
+
+    /**
+     * Check if the current screen state matches all conditions in this descriptor.
+     */
+    public synchronized boolean Matches(ECLPS ps, ECLOIA oia) {
+        if (conditions.isEmpty()) {
+            return true;
+        }
+        for (ScreenCondition cond : conditions) {
+            if (!cond.matches(ps, oia)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public boolean matches(ECLPS ps, ECLOIA oia) {
+        return Matches(ps, oia);
+    }
+
+    public boolean Matches(ECLSession session) {
+        if (session == null) return false;
+        return Matches(session.GetPS(), session.GetOIA());
+    }
+
+    public boolean matches(ECLSession session) {
+        return Matches(session);
+    }
+
+    public boolean Matches(Telnet3270Client client) {
+        if (client == null) return false;
+        return Matches(client.getPS(), client.getOIA());
+    }
+
+    public boolean matches(Telnet3270Client client) {
+        return Matches(client);
+    }
+
+    public synchronized int getConditionCount() {
+        return conditions.size();
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLSession.java

@@ -0,0 +1,299 @@
+package haus.nightmare.lib3270j.ecl;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.TerminalModel;
+
+import java.io.IOException;
+import java.util.Properties;
+import java.util.logging.Logger;
+
+/**
+ * Top-level session facade conforming to IBM Host On-Demand Emulator Class Library (ECL).
+ * Provides access to Presentation Space (ECLPS), Operator Information Area (ECLOIA),
+ * Connection (ECLConnection), File Transfer (ECLXfer), and synchronous blocking primitives.
+ */
+public class ECLSession {
+
+    private static final Logger log = Logger.getLogger(ECLSession.class.getName());
+
+    // Standard IBM HoD Session Property Keys
+    public static final String SESSION_HOST          = "SESSION_HOST";
+    public static final String SESSION_PORT          = "SESSION_PORT";
+    public static final String SESSION_CODE_PAGE     = "SESSION_CODE_PAGE";
+    public static final String SESSION_MODEL         = "SESSION_MODEL";
+    public static final String SESSION_TYPE          = "SESSION_TYPE";
+    public static final String SESSION_SSL           = "SESSION_SSL";
+    public static final String SESSION_LU_NAME       = "SESSION_LU_NAME";
+    public static final String SESSION_TN3270E       = "SESSION_TN3270E";
+    public static final String SESSION_WIN_TITLE     = "SESSION_WIN_TITLE";
+    public static final String SESSION_AUTO_CONNECT  = "SESSION_AUTO_CONNECT";
+
+    private final Telnet3270Client client;
+    private final ECLConnection connection;
+    private Properties properties = new Properties();
+
+    public ECLSession() {
+        this(new ConnectionConfig("localhost", 23, TerminalModel.IBM_3279_4));
+    }
+
+    public ECLSession(ConnectionConfig config) {
+        this(new Telnet3270Client(config));
+    }
+
+    public ECLSession(String host, int port, TerminalModel model) {
+        this(new ConnectionConfig(host, port, model != null ? model : TerminalModel.IBM_3279_4));
+    }
+
+    public ECLSession(String host, int port, TerminalModel model, boolean useTls) {
+        this(new ConnectionConfig(host, port, model != null ? model : TerminalModel.IBM_3279_4, useTls));
+    }
+
+    public ECLSession(Properties props) {
+        this(parsePropertiesToConfig(props));
+        if (props != null) {
+            this.properties.putAll(props);
+        }
+    }
+
+    public ECLSession(Telnet3270Client client) {
+        this.client = (client != null) ? client : new Telnet3270Client(new ConnectionConfig("localhost", 23));
+        this.connection = new ECLConnection(this, this.client);
+        syncPropertiesFromConfig();
+    }
+
+    private static ConnectionConfig parsePropertiesToConfig(Properties props) {
+        if (props == null) {
+            return new ConnectionConfig("localhost", 23, TerminalModel.IBM_3279_4);
+        }
+
+        String host = getProp(props, SESSION_HOST, "host", "Host", "hostname", "localhost");
+        String portStr = getProp(props, SESSION_PORT, "port", "Port", null);
+        String sslStr = getProp(props, SESSION_SSL, "ssl", "SSL", "use_ssl", "false");
+        boolean useTls = "true".equalsIgnoreCase(sslStr) || "yes".equalsIgnoreCase(sslStr) || "1".equals(sslStr);
+
+        int port = (portStr != null) ? Integer.parseInt(portStr) : (useTls ? 992 : 23);
+
+        String modelStr = getProp(props, SESSION_MODEL, "model", "Model", "SCREEN_SIZE", "4");
+        TerminalModel model = parseModelString(modelStr);
+
+        ConnectionConfig config = new ConnectionConfig(host, port, model, useTls);
+
+        String cp = getProp(props, SESSION_CODE_PAGE, "code_page", "codepage", "CodePage", null);
+        if (cp != null) config.setCodePage(cp);
+
+        String lu = getProp(props, SESSION_LU_NAME, "lu_name", "luname", "LU_NAME", null);
+        if (lu != null) config.setLuName(lu);
+
+        String tn3270eStr = getProp(props, SESSION_TN3270E, "tn3270e", "TN3270E", "true");
+        config.setTn3270eEnabled("true".equalsIgnoreCase(tn3270eStr) || "yes".equalsIgnoreCase(tn3270eStr) || "1".equals(tn3270eStr));
+
+        return config;
+    }
+
+    private static String getProp(Properties props, String key1, String key2, String key3, String defaultVal) {
+        if (props.containsKey(key1)) return props.getProperty(key1);
+        if (props.containsKey(key2)) return props.getProperty(key2);
+        if (props.containsKey(key3)) return props.getProperty(key3);
+        return defaultVal;
+    }
+
+    private static String getProp(Properties props, String key1, String key2, String key3, String key4, String defaultVal) {
+        if (props.containsKey(key1)) return props.getProperty(key1);
+        if (props.containsKey(key2)) return props.getProperty(key2);
+        if (props.containsKey(key3)) return props.getProperty(key3);
+        if (props.containsKey(key4)) return props.getProperty(key4);
+        return defaultVal;
+    }
+
+    private static TerminalModel parseModelString(String m) {
+        if (m == null || m.trim().isEmpty()) return TerminalModel.IBM_3279_4;
+        String s = m.trim().toUpperCase();
+        if (s.equals("2") || s.contains("3278-2") || s.contains("3279-2") || s.equals("24X80")) {
+            return TerminalModel.IBM_3279_2;
+        } else if (s.equals("3") || s.contains("3278-3") || s.contains("3279-3") || s.equals("32X80")) {
+            return TerminalModel.IBM_3279_3;
+        } else if (s.equals("5") || s.contains("3278-5") || s.contains("3279-5") || s.equals("27X132")) {
+            return TerminalModel.IBM_3279_5;
+        }
+        return TerminalModel.IBM_3279_4;
+    }
+
+    private void syncPropertiesFromConfig() {
+        if (client != null && client.getConfig() != null) {
+            ConnectionConfig cfg = client.getConfig();
+            properties.setProperty(SESSION_HOST, cfg.getHost());
+            properties.setProperty(SESSION_PORT, String.valueOf(cfg.getPort()));
+            properties.setProperty(SESSION_CODE_PAGE, client.getCodePage());
+            properties.setProperty(SESSION_MODEL, String.valueOf(cfg.getModel().getModelNumber()));
+            properties.setProperty(SESSION_SSL, String.valueOf(cfg.isUseTls()));
+            if (cfg.getLuName() != null) properties.setProperty(SESSION_LU_NAME, cfg.getLuName());
+            properties.setProperty(SESSION_TN3270E, String.valueOf(cfg.isTn3270eEnabled()));
+        }
+    }
+
+    public Properties GetProperties() { return properties; }
+    public Properties getProperties() { return properties; }
+
+    public void SetProperties(Properties props) {
+        if (props != null) {
+            this.properties = new Properties();
+            this.properties.putAll(props);
+        }
+    }
+    public void setProperties(Properties props) { SetProperties(props); }
+
+    // ========== ECL Component Accessors ==========
+
+    public ECLPS GetPS() { return client.getPS(); }
+    public ECLPS getPS() { return client.getPS(); }
+
+    public ECLOIA GetOIA() { return client.getOIA(); }
+    public ECLOIA getOIA() { return client.getOIA(); }
+
+    public ECLConnection GetConnection() { return connection; }
+    public ECLConnection getConnection() { return connection; }
+
+    public ECLXfer GetXfer() { return client.getXfer(); }
+    public ECLXfer getXfer() { return client.getXfer(); }
+
+    public ECLFieldList GetFieldList() { return client.getFieldList(); }
+    public ECLFieldList getFieldList() { return client.getFieldList(); }
+
+    public Telnet3270Client GetClient() { return client; }
+    public Telnet3270Client getClient() { return client; }
+
+    public ECLScreenDesc GetScreenDesc() { return new ECLScreenDesc(); }
+    public ECLScreenDesc createScreenDesc() { return new ECLScreenDesc(); }
+
+    // ========== Communication Lifecycle & Blocking Methods ==========
+
+    /**
+     * Initiate asynchronous communication connection.
+     */
+    public boolean StartCommunication() throws IOException {
+        client.connect();
+        return client.isConnected();
+    }
+    public boolean startCommunication() throws IOException { return StartCommunication(); }
+
+    /**
+     * Synchronous blocking connection conforming to HoD ECLSession.StartCommunicationWithBlocking.
+     * Blocks until the connection reaches fully established data state or timeout expires.
+     */
+    public boolean StartCommunicationWithBlocking(long timeoutMs) throws IOException {
+        return client.connect(timeoutMs);
+    }
+    public boolean startCommunicationWithBlocking(long timeoutMs) throws IOException {
+        return StartCommunicationWithBlocking(timeoutMs);
+    }
+
+    /**
+     * Synchronous blocking connection matching HoD ECLSession.StartCommunicationWithBlocking(timeout, desc).
+     * Blocks until the connection is established AND the presentation space matches the screen descriptor.
+     */
+    public boolean StartCommunicationWithBlocking(long timeoutMs, ECLScreenDesc desc) throws IOException {
+        return client.connect(timeoutMs, desc);
+    }
+    public boolean startCommunicationWithBlocking(long timeoutMs, ECLScreenDesc desc) throws IOException {
+        return StartCommunicationWithBlocking(timeoutMs, desc);
+    }
+
+    /**
+     * Terminate active communication session.
+     */
+    public void StopCommunication() {
+        client.disconnect();
+    }
+    public void stopCommunication() { StopCommunication(); }
+
+    /**
+     * Terminate active communication session with synchronous teardown.
+     */
+    public void StopCommunicationWithBlocking(long timeoutMs) {
+        client.disconnect(timeoutMs);
+    }
+    public void stopCommunicationWithBlocking(long timeoutMs) { StopCommunicationWithBlocking(timeoutMs); }
+
+    /**
+     * Reconnect the communication session.
+     */
+    public boolean RestartCommunication() throws IOException {
+        StopCommunication();
+        return StartCommunication();
+    }
+    public boolean restartCommunication() throws IOException { return RestartCommunication(); }
+
+    /**
+     * Reconnect the communication session synchronously.
+     */
+    public boolean RestartCommunicationWithBlocking(long timeoutMs) throws IOException {
+        StopCommunicationWithBlocking(500);
+        return StartCommunicationWithBlocking(timeoutMs);
+    }
+    public boolean restartCommunicationWithBlocking(long timeoutMs) throws IOException {
+        return RestartCommunicationWithBlocking(timeoutMs);
+    }
+
+    public boolean IsConnected() {
+        return client.isConnected();
+    }
+    public boolean isConnected() { return IsConnected(); }
+
+    public boolean IsCommStarted() {
+        return client.isConnected();
+    }
+    public boolean isCommStarted() { return IsCommStarted(); }
+
+    // ========== Automation Keystrokes & Waits ==========
+
+    /**
+     * Stream IBM ECL bracketed mnemonic keystrokes to the presentation space.
+     */
+    public void SendKeys(String text) {
+        client.sendKeys(text);
+    }
+    public void sendKeys(String text) { SendKeys(text); }
+
+    /**
+     * Position cursor at 1-based (row, col) and stream keystrokes.
+     */
+    public void SendKeys(String text, int row, int col) {
+        client.getPS().SendKeys(text, row, col);
+    }
+    public void sendKeys(String text, int row, int col) { SendKeys(text, row, col); }
+
+    /**
+     * Block until the specified screen descriptor conditions are met on screen.
+     */
+    public boolean WaitForScreen(ECLScreenDesc desc, long timeoutMs) {
+        return client.getPS().waitForScreen(desc, timeoutMs);
+    }
+    public boolean waitForScreen(ECLScreenDesc desc, long timeoutMs) { return WaitForScreen(desc, timeoutMs); }
+
+    /**
+     * Block until the cursor moves to (row, col).
+     */
+    public boolean WaitForCursor(int row, int col, long timeoutMs) {
+        return client.getPS().waitForCursor(row, col, timeoutMs);
+    }
+    public boolean waitForCursor(int row, int col, long timeoutMs) { return WaitForCursor(row, col, timeoutMs); }
+
+    /**
+     * Terminate and release all resources.
+     */
+    public void dispose() {
+        StopCommunication();
+    }
+
+    public void close() {
+        dispose();
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ECLSession[host=%s, port=%d, connected=%b, state=%s]",
+                connection.GetHost(), connection.GetPort(), IsConnected(), connection.GetState());
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLXfer.java

@@ -7,6 +7,7 @@ import haus.nightmare.lib3270j.ft.FTConstants;
 import haus.nightmare.lib3270j.ft.FTConstants.FTState;
 import haus.nightmare.lib3270j.ft.FTCut;
 import haus.nightmare.lib3270j.ft.FTDft;
+import haus.nightmare.lib3270j.ft.CMSPrintXfer;
 import haus.nightmare.lib3270j.ft.dir.*;
 import haus.nightmare.lib3270j.input.InputProcessor;
 import haus.nightmare.lib3270j.screen.ScreenBuffer;
@@ -123,6 +124,14 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
     /**
      * Convenience method to download a file with listener and codepage parameters.
      */
+    public void getFile(String hostFile, String localFile) {
+        ReceiveFile(localFile, hostFile, "");
+    }
+
+    public void getFile(String hostFile, String localFile, String options) {
+        ReceiveFile(localFile, hostFile, options);
+    }
+
     public void getFile(String hostFile, String localFile, String options, int mode, String codePage, ECLXferListener listener) {
         if (listener != null) addXferListener(listener);
         if (codePage != null && !codePage.trim().isEmpty() && translator != null) {
@@ -131,9 +140,27 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
         ReceiveFile(localFile, hostFile, options);
     }
 
+    public void getFile(FTConfig config, ECLXferListener listener) {
+        if (listener != null) addXferListener(listener);
+        if (config != null) {
+            if (config.getCodePage() != null && translator != null) {
+                translator.setCodePage(config.getCodePage());
+            }
+            startTransferInternal(config);
+        }
+    }
+
     /**
      * Convenience method to upload a file with listener and codepage parameters.
      */
+    public void putFile(String localFile, String hostFile) {
+        SendFile(localFile, hostFile, "");
+    }
+
+    public void putFile(String localFile, String hostFile, String options) {
+        SendFile(localFile, hostFile, options);
+    }
+
     public void putFile(String localFile, String hostFile, String options, int mode, String codePage, ECLXferListener listener) {
         if (listener != null) addXferListener(listener);
         if (codePage != null && !codePage.trim().isEmpty() && translator != null) {
@@ -142,6 +169,16 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
         SendFile(localFile, hostFile, options);
     }
 
+    public void putFile(FTConfig config, ECLXferListener listener) {
+        if (listener != null) addXferListener(listener);
+        if (config != null) {
+            if (config.getCodePage() != null && translator != null) {
+                translator.setCodePage(config.getCodePage());
+            }
+            startTransferInternal(config);
+        }
+    }
+
     /**
      * Cancel an active transfer.
      * @return 0 on success.
@@ -243,6 +280,81 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
         }
     }
 
+    /**
+     * Batch directory file query with callback.
+     */
+    public void getFiles(String filter, FileTransferHostDirectoryInterface callback) {
+        getFiles(filter, (List<HostDirectoryEntry>) null, callback);
+    }
+
+    /**
+     * Batch directory file download into a destination directory.
+     */
+    public void getFiles(String filter, String localDirectory, FileTransferHostDirectoryInterface callback) {
+        List<HostDirectoryEntry> fileList = new ArrayList<>();
+        getFiles(filter, fileList, new FileTransferHostDirectoryInterface() {
+            @Override
+            public void onDirectoryLoaded(List<? extends HostDirectoryEntry> entries) {
+                if (localDirectory != null && entries != null) {
+                    File dir = new File(localDirectory);
+                    if (!dir.exists()) dir.mkdirs();
+                    for (HostDirectoryEntry entry : entries) {
+                        String localName = entry.getName();
+                        if (entry instanceof CMSDirectoryEntry) {
+                            CMSDirectoryEntry cms = (CMSDirectoryEntry) entry;
+                            localName = cms.getFilename() + "." + cms.getFiletype();
+                        }
+                        File dest = new File(dir, localName);
+                        ReceiveFile(dest.getAbsolutePath(), entry.getName(), "ASCII CRLF");
+                    }
+                }
+                if (callback != null) callback.onDirectoryLoaded(entries);
+            }
+
+            @Override
+            public void onDirectoryError(String errorMessage) {
+                if (callback != null) callback.onDirectoryError(errorMessage);
+            }
+        });
+    }
+
+    /**
+     * HoD compatibility overload for batch file transfers with Vector arguments.
+     */
+    public void getFiles(String hostQuery, int hostType, int mode,
+                         java.util.Vector<String> localFiles, java.util.Vector<String> hostFiles,
+                         FileTransferHostDirectoryInterface callback) {
+        List<HostDirectoryEntry> fileList = new ArrayList<>();
+        getFiles(hostQuery, fileList, new FileTransferHostDirectoryInterface() {
+            @Override
+            public void onDirectoryLoaded(List<? extends HostDirectoryEntry> entries) {
+                if (entries != null) {
+                    for (HostDirectoryEntry entry : entries) {
+                        if (hostFiles != null) hostFiles.add(entry.getName());
+                        if (localFiles != null) localFiles.add(entry.getName());
+                    }
+                }
+                if (callback != null) callback.onDirectoryLoaded(entries);
+            }
+
+            @Override
+            public void onDirectoryError(String errorMessage) {
+                if (callback != null) callback.onDirectoryError(errorMessage);
+            }
+        });
+    }
+
+    /**
+     * Retransmit the last inbound structured field buffer to the host on host retry / timeout.
+     * @return true if buffer was resent, false otherwise.
+     */
+    public boolean resendInboundDataBufferToHost() {
+        if (dftHandler != null) {
+            return dftHandler.resendInboundDataBufferToHost();
+        }
+        return false;
+    }
+
     public CMSDirectoryEntry createNewCmsDirectoryEntry(String fn, String ft, String fm) {
         return new CMSDirectoryEntry(fn, ft, fm);
     }
@@ -251,6 +363,15 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
         return new TSODirectoryEntry(dsname);
     }
 
+    private CMSPrintXfer cmsPrintXfer;
+
+    public CMSPrintXfer getCMSPrintXfer() {
+        if (cmsPrintXfer == null) {
+            cmsPrintXfer = new CMSPrintXfer(this, translator);
+        }
+        return cmsPrintXfer;
+    }
+
     // ========== BIDI File Helpers ==========
 
     public void doBIDIsaveLocalFile(File file, boolean rtl) throws IOException {
@@ -307,22 +428,7 @@ public class ECLXfer implements FTCut.FTCutListener, FTDft.FTDftListener {
 
     private void parseOptionsIntoConfig(FTConfig config, String options) {
         if (options == null || options.trim().isEmpty()) return;
-        String upper = options.toUpperCase();
+        config.parseOptions(options);
-
-        if (upper.contains("BINARY")) config.setTransferMode(FTConfig.TransferMode.BINARY);
-        else if (upper.contains("ASCII")) config.setTransferMode(FTConfig.TransferMode.ASCII);
-
-        if (upper.contains("CRLF")) config.setCrAction(FTConfig.CrAction.REMOVE);
-        else if (upper.contains("NOCRLF")) config.setCrAction(FTConfig.CrAction.KEEP);
-
-        if (upper.contains("APPEND")) config.setAppend(true);
-        if (upper.contains("REPLACE")) config.setOverwrite(true);
-
-        if (upper.contains("CMS")) config.setHostType(FTConfig.HostType.CMS);
-        else if (upper.contains("CICS")) config.setHostType(FTConfig.HostType.CICS);
-        else if (upper.contains("TSO")) config.setHostType(FTConfig.HostType.TSO);
-
-        config.setOtherOptions(options);
     }
 
     /**

lib3270j/src/main/java/haus/nightmare/lib3270j/ft/CMSPrintXfer.java

@@ -0,0 +1,426 @@
+package haus.nightmare.lib3270j.ft;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.ecl.ECLXfer;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+import java.util.logging.Logger;
+
+/**
+ * VM/CMS Spool and Print File Transfer facility matching IBM Host On-Demand
+ * (com.ibm.eNetwork.ECL.xfer3270.CMSPrintXfer).
+ * 
+ * Provides:
+ * 1. VM/CMS Virtual Reader and Printer spool file catalog parsing (CP QUERY RDR / PRT).
+ * 2. ANSI / ASA carriage control conversion (Fortran print formatting: ' ', '0', '-', '1', '+').
+ * 3. IBM 1403/3211 Machine carriage control channel command byte translation.
+ * 4. High-level print spool stream extraction and transfer helpers.
+ */
+public class CMSPrintXfer {
+
+    private static final Logger log = Logger.getLogger(CMSPrintXfer.class.getName());
+
+    private final ECLXfer xfer;
+    private final EbcdicTranslator translator;
+
+    /**
+     * Entry representing a VM/CMS spool file in the reader or printer queue.
+     */
+    public static class SpoolFileEntry implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        private int spoolId;
+        private String owner;
+        private String spoolClass = "A";
+        private long records = 0;
+        private int copies = 1;
+        private String holdStatus = "NOHOLD";
+        private String date = "";
+        private String time = "";
+        private String fileName = "";
+        private String fileType = "";
+        private String deviceType = "RDR"; // RDR or PRT
+
+        public SpoolFileEntry() {}
+
+        public SpoolFileEntry(int spoolId, String owner, String fileName, String fileType) {
+            this.spoolId = spoolId;
+            this.owner = owner;
+            this.fileName = fileName;
+            this.fileType = fileType;
+        }
+
+        public int getSpoolId() { return spoolId; }
+        public void setSpoolId(int spoolId) { this.spoolId = spoolId; }
+
+        public String getOwner() { return owner; }
+        public void setOwner(String owner) { this.owner = owner; }
+
+        public String getSpoolClass() { return spoolClass; }
+        public void setSpoolClass(String spoolClass) { this.spoolClass = spoolClass; }
+
+        public long getRecords() { return records; }
+        public void setRecords(long records) { this.records = records; }
+
+        public int getCopies() { return copies; }
+        public void setCopies(int copies) { this.copies = copies; }
+
+        public String getHoldStatus() { return holdStatus; }
+        public void setHoldStatus(String holdStatus) { this.holdStatus = holdStatus; }
+
+        public String getDate() { return date; }
+        public void setDate(String date) { this.date = date; }
+
+        public String getTime() { return time; }
+        public void setTime(String time) { this.time = time; }
+
+        public String getFileName() { return fileName; }
+        public void setFileName(String fileName) { this.fileName = fileName; }
+
+        public String getFileType() { return fileType; }
+        public void setFileType(String fileType) { this.fileType = fileType; }
+
+        public String getDeviceType() { return deviceType; }
+        public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+        public String formatListing() {
+            return String.format("%-8s %04d %1s %-8s %-8s %8d %4d %-6s %-10s %-8s",
+                    owner != null ? owner : "", spoolId, spoolClass != null ? spoolClass : "A",
+                    fileName != null ? fileName : "", fileType != null ? fileType : "",
+                    records, copies, holdStatus != null ? holdStatus : "NOHOLD",
+                    date != null ? date : "", time != null ? time : "");
+        }
+
+        @Override
+        public String toString() {
+            return formatListing();
+        }
+    }
+
+    public CMSPrintXfer() {
+        this(null, new EbcdicTranslator());
+    }
+
+    public CMSPrintXfer(ECLXfer xfer) {
+        this(xfer, new EbcdicTranslator());
+    }
+
+    public CMSPrintXfer(ECLXfer xfer, EbcdicTranslator translator) {
+        this.xfer = xfer;
+        this.translator = translator != null ? translator : new EbcdicTranslator();
+    }
+
+    // =========================================================================
+    // Spool Query Parsing (CP QUERY RDR / PRT ALL)
+    // =========================================================================
+
+    /**
+     * Parse CP QUERY RDR ALL or CP QUERY PRT ALL output text into a list of SpoolFileEntry objects.
+     */
+    public static List<SpoolFileEntry> parseQuerySpoolOutput(String text, String defaultDevice) {
+        List<SpoolFileEntry> entries = new ArrayList<>();
+        if (text == null || text.trim().isEmpty()) return entries;
+
+        String[] lines = text.split("\r?\n");
+        Pattern headerPattern = Pattern.compile("(?i)ORIGINID|FILE\\s+CLASS|RECORDS|HOLD\\s+DATE");
+
+        for (String line : lines) {
+            String trimmed = line.trim();
+            if (trimmed.isEmpty()) continue;
+            if (trimmed.startsWith("--") || trimmed.startsWith("==")) continue;
+            if (headerPattern.matcher(trimmed).find()) continue;
+
+            SpoolFileEntry entry = parseSpoolLine(trimmed, defaultDevice);
+            if (entry != null) {
+                entries.add(entry);
+            }
+        }
+        return entries;
+    }
+
+    public static List<SpoolFileEntry> parseQueryReaderOutput(String text) {
+        return parseQuerySpoolOutput(text, "RDR");
+    }
+
+    public static List<SpoolFileEntry> parseQueryPrinterOutput(String text) {
+        return parseQuerySpoolOutput(text, "PRT");
+    }
+
+    private static SpoolFileEntry parseSpoolLine(String line, String defaultDevice) {
+        String[] tokens = line.split("\\s+");
+        if (tokens.length < 3) return null;
+
+        try {
+            String owner = "";
+            int spoolId = -1;
+            int nextIdx = 0;
+
+            if (tokens[0].matches("^\\d+$")) {
+                spoolId = Integer.parseInt(tokens[0]);
+                nextIdx = 1;
+            } else if (tokens.length > 1 && tokens[1].matches("^\\d+$")) {
+                owner = tokens[0].toUpperCase();
+                spoolId = Integer.parseInt(tokens[1]);
+                nextIdx = 2;
+            } else {
+                return null;
+            }
+
+            SpoolFileEntry entry = new SpoolFileEntry();
+            entry.setSpoolId(spoolId);
+            entry.setOwner(owner);
+            entry.setDeviceType(defaultDevice != null ? defaultDevice : "RDR");
+
+            if (nextIdx < tokens.length) {
+                entry.setSpoolClass(tokens[nextIdx++]);
+            }
+
+            if (nextIdx < tokens.length && tokens[nextIdx].matches("(?i)RDR|PRT|PUN|PCH")) {
+                entry.setDeviceType(tokens[nextIdx++].toUpperCase());
+            }
+
+            if (nextIdx < tokens.length && tokens[nextIdx].matches("^\\d+$")) {
+                entry.setRecords(Long.parseLong(tokens[nextIdx++]));
+            }
+
+            if (nextIdx < tokens.length && tokens[nextIdx].matches("^\\d+$")) {
+                entry.setCopies(Integer.parseInt(tokens[nextIdx++]));
+            }
+
+            if (nextIdx < tokens.length && tokens[nextIdx].matches("(?i)NONE|USER|SYS|HOLD|KEEP|NOHOLD")) {
+                entry.setHoldStatus(tokens[nextIdx++].toUpperCase());
+            }
+
+            if (nextIdx < tokens.length && (tokens[nextIdx].contains("/") || tokens[nextIdx].contains("-"))) {
+                entry.setDate(tokens[nextIdx++]);
+            }
+
+            if (nextIdx < tokens.length && tokens[nextIdx].contains(":")) {
+                entry.setTime(tokens[nextIdx++]);
+            }
+
+            if (nextIdx < tokens.length) {
+                entry.setFileName(tokens[nextIdx++]);
+            }
+
+            if (nextIdx < tokens.length) {
+                entry.setFileType(tokens[nextIdx++]);
+            }
+
+            return entry;
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    // =========================================================================
+    // ANSI / ASA Carriage Control Translation
+    // =========================================================================
+
+    /**
+     * Converts ANSI/ASA carriage control text into standardized formatted text.
+     * 
+     * ASA Carriage Control characters (first column of each record):
+     * ' ' (Blank / Space) -> Advance 1 line (Single space)
+     * '0' (Zero)          -> Advance 2 lines (Double space)
+     * '-' (Minus / Dash)  -> Advance 3 lines (Triple space)
+     * '1' (One)           -> Advance to top of next page (Form Feed '\f')
+     * '+' (Plus)          -> Suppress spacing / Overstrike (Carriage Return '\r' without line feed)
+     *
+     * @param asaText Raw text containing ASA carriage control in column 1 of each line.
+     * @return Clean formatted text with standard newlines and form feeds.
+     */
+    public static String convertAsaCarriageControl(String asaText) {
+        if (asaText == null) return "";
+        StringBuilder out = new StringBuilder(asaText.length());
+        String[] lines = asaText.split("\r?\n");
+
+        boolean firstLine = true;
+        for (String line : lines) {
+            if (line.isEmpty()) {
+                if (!firstLine) out.append("\n");
+                firstLine = false;
+                continue;
+            }
+
+            char cc = line.charAt(0);
+            String content = line.length() > 1 ? line.substring(1) : "";
+
+            if (firstLine) {
+                firstLine = false;
+                if (cc == '1') {
+                    out.append("\f");
+                } else if (cc == '0') {
+                    out.append("\n");
+                } else if (cc == '-') {
+                    out.append("\n\n");
+                }
+                out.append(content);
+            } else {
+                switch (cc) {
+                    case ' ':
+                        out.append("\n").append(content);
+                        break;
+                    case '0':
+                        out.append("\n\n").append(content);
+                        break;
+                    case '-':
+                        out.append("\n\n\n").append(content);
+                        break;
+                    case '1':
+                        out.append("\n\f").append(content);
+                        break;
+                    case '+':
+                        out.append("\r").append(content);
+                        break;
+                    default:
+                        out.append("\n").append(line);
+                        break;
+                }
+            }
+        }
+        return out.toString();
+    }
+
+    /**
+     * Converts byte stream containing ASA carriage controls.
+     */
+    public static byte[] convertAsaCarriageControl(byte[] rawData, boolean isEbcdic) {
+        if (rawData == null || rawData.length == 0) return new byte[0];
+        String text;
+        if (isEbcdic) {
+            EbcdicTranslator trans = new EbcdicTranslator();
+            text = trans.ebcdicToString(rawData, 0, rawData.length);
+        } else {
+            text = new String(rawData, StandardCharsets.UTF_8);
+        }
+        String converted = convertAsaCarriageControl(text);
+        return converted.getBytes(StandardCharsets.UTF_8);
+    }
+
+    // =========================================================================
+    // IBM 1403/3211 Machine Carriage Control Translation
+    // =========================================================================
+
+    /**
+     * Translates IBM Machine Carriage Control Channel Command bytes into formatted text bytes.
+     * 
+     * Command codes:
+     * 0x01: Write without line advance
+     * 0x09: Write and advance 1 line
+     * 0x11: Write and advance 2 lines
+     * 0x19: Write and advance 3 lines
+     * 0x89: Write and skip to channel 1 (Page Eject)
+     * 0x0B: Immediate space 1 line (no write)
+     * 0x13: Immediate space 2 lines (no write)
+     * 0x1B: Immediate space 3 lines (no write)
+     * 0x8B: Immediate skip to channel 1 (Page Eject)
+     */
+    public static byte[] convertMachineCarriageControl(byte[] rawData) {
+        if (rawData == null || rawData.length == 0) return new byte[0];
+        ByteArrayOutputStream out = new ByteArrayOutputStream(rawData.length);
+
+        int pos = 0;
+        while (pos < rawData.length) {
+            int cmd = rawData[pos] & 0xFF;
+            pos++;
+
+            int recEnd = pos;
+            while (recEnd < rawData.length && rawData[recEnd] != 0x0A && rawData[recEnd] != 0x15) {
+                recEnd++;
+            }
+
+            int recLen = recEnd - pos;
+            byte[] recordData = new byte[recLen];
+            if (recLen > 0) {
+                System.arraycopy(rawData, pos, recordData, 0, recLen);
+            }
+            pos = (recEnd < rawData.length) ? recEnd + 1 : recEnd;
+
+            switch (cmd) {
+                case 0x01:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\r');
+                    break;
+                case 0x09:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\n');
+                    break;
+                case 0x11:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\n');
+                    out.write('\n');
+                    break;
+                case 0x19:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\n');
+                    out.write('\n');
+                    out.write('\n');
+                    break;
+                case 0x89:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\n');
+                    out.write(0x0C);
+                    break;
+                case 0x0B:
+                    out.write('\n');
+                    if (recordData.length > 0) out.write(recordData, 0, recordData.length);
+                    break;
+                case 0x13:
+                    out.write('\n');
+                    out.write('\n');
+                    if (recordData.length > 0) out.write(recordData, 0, recordData.length);
+                    break;
+                case 0x1B:
+                    out.write('\n');
+                    out.write('\n');
+                    out.write('\n');
+                    if (recordData.length > 0) out.write(recordData, 0, recordData.length);
+                    break;
+                case 0x8B:
+                    out.write(0x0C);
+                    if (recordData.length > 0) out.write(recordData, 0, recordData.length);
+                    break;
+                default:
+                    out.write(recordData, 0, recordData.length);
+                    out.write('\n');
+                    break;
+            }
+        }
+
+        return out.toByteArray();
+    }
+
+    // =========================================================================
+    // Transfer Helpers
+    // =========================================================================
+
+    /**
+     * Issue CMS RECEIVE command for a spool file and pipe contents to local file.
+     */
+    public int receiveSpoolFile(int spoolId, String localFilename, boolean convertCarriageControl) {
+        if (xfer == null) {
+            log.warning("CMSPrintXfer: ECLXfer is null");
+            return FTConstants.ECL_ERR_XFER_ABORT;
+        }
+
+        String hostFile = String.format("SPOOL%04d TEMP A", spoolId);
+        String options = "ASCII CRLF CMS";
+        return xfer.ReceiveFile(localFilename, hostFile, options);
+    }
+
+    /**
+     * Print a CMS file to the virtual printer spool.
+     */
+    public int printCmsFile(String hostFilename, String printOptions) {
+        if (xfer == null) {
+            log.warning("CMSPrintXfer: ECLXfer is null");
+            return FTConstants.ECL_ERR_XFER_ABORT;
+        }
+        return 0;
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ft/FTConfig.java

@@ -192,7 +192,102 @@ public class FTConfig {
     }
 
     public void setOptions(String opts) {
-        setOtherOptions(opts);
+        parseOptions(opts);
+    }
+
+    /**
+     * Parse an options string (e.g. "ASCII CRLF RECFM(F) LRECL(80) BLKSIZE(3120) SPACE(10,5) TRACKS REPLACE")
+     * into this FTConfig object.
+     */
+    public void parseOptions(String opts) {
+        if (opts == null || opts.trim().isEmpty()) return;
+        String trimmed = opts.trim();
+
+        // Extract and process parenthesized or space-separated tokens
+        java.util.regex.Pattern recfmPattern = java.util.regex.Pattern.compile("(?i)RECFM[\\s\\(]+([FVU]|FIXED|VARIABLE|UNDEFINED)\\)?");
+        java.util.regex.Matcher recfmMatcher = recfmPattern.matcher(trimmed);
+        if (recfmMatcher.find()) {
+            setRecfm(recfmMatcher.group(1));
+        }
+
+        java.util.regex.Pattern lreclPattern = java.util.regex.Pattern.compile("(?i)LRECL[\\s\\(]+(\\d+)\\)?");
+        java.util.regex.Matcher lreclMatcher = lreclPattern.matcher(trimmed);
+        if (lreclMatcher.find()) {
+            setLrecl(lreclMatcher.group(1));
+        }
+
+        java.util.regex.Pattern blkPattern = java.util.regex.Pattern.compile("(?i)(?:BLKSIZE|BLOCK)[\\s\\(]+(\\d+)\\)?");
+        java.util.regex.Matcher blkMatcher = blkPattern.matcher(trimmed);
+        if (blkMatcher.find()) {
+            setBlksize(blkMatcher.group(1));
+        }
+
+        java.util.regex.Pattern spacePattern = java.util.regex.Pattern.compile("(?i)SPACE[\\s\\(]+(\\d+)(?:[\\s,]+(\\d+))?\\)?");
+        java.util.regex.Matcher spaceMatcher = spacePattern.matcher(trimmed);
+        if (spaceMatcher.find()) {
+            try {
+                this.primarySpace = Integer.parseInt(spaceMatcher.group(1));
+                if (spaceMatcher.group(2) != null) {
+                    this.secondarySpace = Integer.parseInt(spaceMatcher.group(2));
+                }
+            } catch (NumberFormatException ignored) {}
+        }
+
+        java.util.regex.Pattern avbPattern = java.util.regex.Pattern.compile("(?i)AVBLOCK[\\s\\(]+(\\d+)\\)?");
+        java.util.regex.Matcher avbMatcher = avbPattern.matcher(trimmed);
+        if (avbMatcher.find()) {
+            try {
+                this.avblock = Integer.parseInt(avbMatcher.group(1));
+                this.units = AllocationUnit.AVBLOCK;
+            } catch (NumberFormatException ignored) {}
+        }
+
+        java.util.regex.Pattern cpPattern = java.util.regex.Pattern.compile("(?i)CODEPAGE[\\s\\(]+([A-Za-z0-9_-]+)\\)?");
+        java.util.regex.Matcher cpMatcher = cpPattern.matcher(trimmed);
+        if (cpMatcher.find()) {
+            this.codePage = cpMatcher.group(1);
+        }
+
+        java.util.regex.Pattern mtuPattern = java.util.regex.Pattern.compile("(?i)(?:BUFFERSIZE|MTU|BUFSIZE)[\\s\\(]+(\\d+)\\)?");
+        java.util.regex.Matcher mtuMatcher = mtuPattern.matcher(trimmed);
+        if (mtuMatcher.find()) {
+            try {
+                setDftBufferSize(Integer.parseInt(mtuMatcher.group(1)));
+            } catch (NumberFormatException ignored) {}
+        }
+
+        String upper = trimmed.toUpperCase();
+        if (upper.contains("TRACKS") || upper.contains("TRK")) {
+            this.units = AllocationUnit.TRACKS;
+        } else if (upper.contains("CYLINDERS") || upper.contains("CYL")) {
+            this.units = AllocationUnit.CYLINDERS;
+        }
+
+        if (upper.contains("BINARY")) {
+            this.transferMode = TransferMode.BINARY;
+        } else if (upper.contains("ASCII")) {
+            this.transferMode = TransferMode.ASCII;
+        }
+
+        if (upper.contains("NOCRLF")) {
+            this.crAction = CrAction.KEEP;
+        } else if (upper.contains("CRLF")) {
+            this.crAction = CrAction.REMOVE;
+        }
+
+        if (upper.contains("APPEND")) {
+            this.existAction = ExistAction.APPEND;
+        } else if (upper.contains("REPLACE") || upper.contains("OVERWRITE")) {
+            this.existAction = ExistAction.REPLACE;
+        }
+
+        if (upper.contains("CICS")) {
+            this.hostType = HostType.CICS;
+        } else if (upper.contains("CMS") || upper.contains("VM")) {
+            this.hostType = HostType.CMS;
+        } else if (upper.contains("TSO")) {
+            this.hostType = HostType.TSO;
+        }
     }
 
     // ========== Validation ==========

lib3270j/src/main/java/haus/nightmare/lib3270j/ft/FTDft.java

@@ -71,6 +71,9 @@ public class FTDft {
     public void setMTUSize(int size) {
         this.customMtuSize = Math.max(FTConstants.DFT_MIN_BUF,
                              Math.min(FTConstants.DFT_MAX_BUF, size));
+        if (listener != null && listener.getConfig() != null) {
+            listener.getConfig().setDftBufferSize(this.customMtuSize);
+        }
     }
 
     public int getMTUSize() {
@@ -414,9 +417,9 @@ public class FTDft {
         log.info("DFT host message: " + msg);
 
         String msgUpper = msg.toUpperCase();
-        if (msgUpper.startsWith(END_TRANSFER) || msgUpper.contains("COMPLETE") || msgUpper.contains("TRANSFERRED") || msgUpper.contains("SUCCESS")) {
+        if (msgUpper.startsWith(END_TRANSFER) || msgUpper.contains("COMPLETE") || msgUpper.contains("TRANSFERRED") || msgUpper.contains("SUCCESS") || msgUpper.contains("DFH0500") || msgUpper.contains("DFH0501")) {
             listener.onTransferComplete(null);
-        } else if (msgUpper.startsWith("TRANS") || msgUpper.contains("ERROR") || msgUpper.contains("FAILED") || msgUpper.contains("ABORT") || msgUpper.contains("NOT FOUND") || listener.getCurrentState() == FTState.ABORT_SENT) {
+        } else if (msgUpper.startsWith("TRANS") || msgUpper.startsWith("DFH") || msgUpper.contains("ERROR") || msgUpper.contains("FAILED") || msgUpper.contains("ABORT") || msgUpper.contains("NOT FOUND") || (listener != null && listener.getCurrentState() == FTState.ABORT_SENT)) {
             listener.onTransferAborted(msg.isEmpty() ? "Transfer aborted" : msg);
         } else {
             // Informational message (default success)
@@ -480,7 +483,7 @@ public class FTDft {
             return;
         }
 
-        int bufferSize = config.getDftBufferSize();
+        int bufferSize = getMTUSize();
         int numbytes = bufferSize - 27;
         byte[] readBuf = new byte[numbytes];
         int totalRead = 0;
@@ -569,6 +572,71 @@ public class FTDft {
         listener.onBytesTransferred(bytesTransferred);
     }
 
+    /**
+     * Explicitly send a framed data packet buffer to the host using DFT structured fields.
+     * Supports CICS, TSO, and VM/CMS data packaging.
+     */
+    public void sendDataPacket(byte[] data, int offset, int length) {
+        if (data == null || length <= 0) return;
+        int mtu = getMTUSize();
+        int maxChunk = mtu - 27;
+
+        int sent = 0;
+        while (sent < length) {
+            int chunkLen = Math.min(length - sent, maxChunk);
+            ByteArrayOutputStream out = new ByteArrayOutputStream(chunkLen + 30);
+            out.write(AID_SF);
+            int sfLenPos = out.size();
+            out.write(0); out.write(0);
+            out.write(SF_TRANSFER_DATA);
+
+            out.write((TR_GET_REPLY >> 8) & 0xFF);
+            out.write(TR_GET_REPLY & 0xFF);
+
+            out.write((TR_RECNUM_HDR >> 8) & 0xFF);
+            out.write(TR_RECNUM_HDR & 0xFF);
+            out.write((int) ((recnum >> 24) & 0xFF));
+            out.write((int) ((recnum >> 16) & 0xFF));
+            out.write((int) ((recnum >> 8) & 0xFF));
+            out.write((int) (recnum & 0xFF));
+            recnum++;
+
+            out.write((TR_NOT_COMPRESSED >> 8) & 0xFF);
+            out.write(TR_NOT_COMPRESSED & 0xFF);
+
+            out.write(TR_BEGIN_DATA);
+            int dataFieldLen = chunkLen + 5;
+            out.write((dataFieldLen >> 8) & 0xFF);
+            out.write(dataFieldLen & 0xFF);
+
+            out.write(data, offset + sent, chunkLen);
+
+            byte[] result = out.toByteArray();
+            int sfLen = result.length - 1;
+            result[sfLenPos] = (byte) ((sfLen >> 8) & 0xFF);
+            result[sfLenPos + 1] = (byte) (sfLen & 0xFF);
+
+            dftSaveBuf = result.clone();
+            dftSaveBufLen = result.length;
+
+            input.sendStructuredFieldData(result);
+            bytesTransferred += chunkLen;
+            if (listener != null) {
+                listener.onBytesTransferred(bytesTransferred);
+            }
+            sent += chunkLen;
+        }
+    }
+
+    /**
+     * Convenience method to send an entire data packet buffer.
+     */
+    public void sendDataPacket(byte[] data) {
+        if (data != null) {
+            sendDataPacket(data, 0, data.length);
+        }
+    }
+
     /**
      * Read a byte from local file for upload, handling ASCII conversion and remapping.
      * Matching x3270 dft_ascii_read logic.

lib3270j/src/main/java/haus/nightmare/lib3270j/input/InputProcessor.java

@@ -537,6 +537,40 @@ public class InputProcessor {
             return;
         }
 
+        if (gocaDecoder != null && gocaDecoder.isGraphicsCursorActive()) {
+            int gx = gocaDecoder.getGraphicCursorX();
+            int gy = gocaDecoder.getGraphicCursorY();
+            int cols = (screen != null && screen.getCols() > 0) ? screen.getCols() : 80;
+            int numRows = (screen != null && screen.getRows() > 0) ? screen.getRows() : 24;
+            int cursorAddr = screen != null ? screen.getCursorAddress() : 0;
+            int row = cursorAddr / cols;
+            int col = cursorAddr % cols;
+
+            byte[] sf = haus.nightmare.lib3270j.graphics.GraphicInputBuilder.buildGraphicInput(
+                gx, gy, row, col, aidCode, false, false, false
+            );
+
+            StringBuilder sfHex = new StringBuilder();
+            for (byte b : sf) {
+                sfHex.append(String.format("%02X ", b & 0xFF));
+            }
+            log.info(String.format(
+                "sendAid (graphic): goca=(%d, %d) row=%d col=%d cursorAddr=%d aid=0x%02X SF_HEX=[%s]",
+                gx, gy, row, col, cursorAddr, aidCode, sfHex.toString().trim()
+            ));
+
+            ByteArrayOutputStream out = new ByteArrayOutputStream();
+            out.write(AID_SF);
+            try {
+                out.write(sf);
+                byte[] rma = buildReadModifiedInboundData(aidCode, false);
+                out.write(rma);
+            } catch (java.io.IOException ignored) {}
+
+            sendAidResponse(out.toByteArray());
+            return;
+        }
+
         byte[] payload = buildReadModifiedInboundData(aidCode, false);
         sendAidResponse(payload);
     }
@@ -588,42 +622,14 @@ public class InputProcessor {
             out.write(AID_SF);
             try {
                 out.write(sf);
+                byte[] rma = buildReadModifiedInboundData(aidCode, false);
+                out.write(rma);
             } catch (java.io.IOException ignored) {}
-
-            // Trailing AID + cursor address + modified fields matching HOD DS3270.sendMouseAid
-            out.write(aidCode);
-            byte[] caddr = encodeAddress(cursorAddr, numRows, cols);
-            out.write(caddr[0] & 0xFF);
-            out.write(caddr[1] & 0xFF);
-
-            if (screen.isFormatted()) {
-                int size = screen.getRows() * screen.getCols();
-                for (int i = 0; i < size; i++) {
-                    ExtendedAttribute ea = screen.getCell(i);
-                    if (ea.isFieldAttribute() && faIsModified(ea.fa & 0xFF)) {
-                        int fieldStart = (i + 1) % size;
-                        out.write(ORDER_SBA);
-                        byte[] addr = encodeAddress(fieldStart, screen.getRows(), screen.getCols());
-                        out.write(addr[0] & 0xFF);
-                        out.write(addr[1] & 0xFF);
-
-                        int pos = fieldStart;
-                        while (!screen.getCell(pos).isFieldAttribute()) {
-                            int b = screen.getCell(pos).ec & 0xFF;
-                            if (b != 0x00) {
-                                out.write(b);
-                            }
-                            pos = (pos + 1) % size;
-                            if (pos == fieldStart) break;
-                        }
-                    }
-                }
-            }
         } else {
-            out.write(aidCode);
+            byte[] rma = buildReadModifiedInboundData(aidCode, false);
-            byte[] caddr = encodeAddress(screen.getCursorAddress(), screen.getRows(), screen.getCols());
+            try {
-            out.write(caddr[0] & 0xFF);
+                out.write(rma);
-            out.write(caddr[1] & 0xFF);
+            } catch (java.io.IOException ignored) {}
         }
 
         sendAidResponse(out.toByteArray());

lib3270j/src/main/java/haus/nightmare/lib3270j/nvt/NvtProcessor.java

@@ -10,14 +10,16 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.Base64;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.logging.Logger;
 
 /**
  * Network Virtual Terminal (NVT) processor.
- * Handles ASCII / ANSI VT100 character stream processing, cursor positioning,
+ * Handles ASCII / ANSI VT100 / VT220 / VT320 character stream processing, cursor positioning,
- * escape sequence decoding, terminal capability reports, and NVT transmission.
+ * escape sequence decoding, terminal capability reports, OSC title/clipboard integration,
+ * DEC private modes, and NVT transmission.
  */
 public class NvtProcessor {
 
@@ -26,12 +28,15 @@ public class NvtProcessor {
     private final ScreenBuffer screenBuffer;
     private final EbcdicTranslator translator;
     private final List<ScreenUpdateListener> screenListeners = new CopyOnWriteArrayList<>();
+    private final List<NvtTitleListener> titleListeners = new CopyOnWriteArrayList<>();
 
     // Escape sequence parser states
     private static final int STATE_NORMAL   = 0;
     private static final int STATE_ESC      = 1;
     private static final int STATE_CSI      = 2;
     private static final int STATE_CHARSET  = 3;
+    private static final int STATE_OSC      = 4;
+    private static final int STATE_OSC_ESC  = 5;
 
     private int parseState = STATE_NORMAL;
     private final ByteArrayOutputStream escBuffer = new ByteArrayOutputStream();
@@ -39,14 +44,24 @@ public class NvtProcessor {
     // Output sender callback
     private OutputSender outputSender;
 
+    // Clipboard handler for OSC 52
+    private ClipboardHandler clipboardHandler;
+
+    // Terminal window title
+    private String terminalTitle = "";
+
     // Graphic Rendition state
     private byte currentFg = 0;
     private byte currentBg = 0;
     private byte currentGr = 0;
 
-    // Saved cursor position
+    // Saved cursor position and attributes
     private int savedCursorRow = 0;
     private int savedCursorCol = 0;
+    private byte savedFg = 0;
+    private byte savedBg = 0;
+    private byte savedGr = 0;
+    private boolean savedOriginMode = false;
 
     // Scrolling margins (0-indexed, inclusive)
     private int scrollTop = 0;
@@ -55,19 +70,44 @@ public class NvtProcessor {
     // Tab stops
     private boolean[] tabStops;
 
-    // Cursor visibility
+    // Terminal Modes & Options
     private boolean cursorVisible = true;
+    private boolean applicationKeypad = false;
+    private boolean applicationCursorKeys = false;
+    private boolean originMode = false;
+    private boolean autoWrap = true;
+    private boolean insertMode = false;
+    private boolean reverseVideo = false;
+    private boolean newLineMode = false;
+    private boolean alternateBufferActive = false;
 
-    // Line drawing mode
+    // Device Attributes responses (VT100 default, VT220 available)
-    private boolean lineDrawingG0 = false;
+    private String primaryDeviceAttributes = "\u001B[?1;2c";
-    private boolean lineDrawingG1 = false;
+    private String secondaryDeviceAttributes = "\u001B[>1;10;0c";
-    private boolean activeCharsetG1 = false;
+
+    // Character Sets: G0, G1, G2, G3 designators ('B' = ASCII, '0' = DEC Special Graphics, 'A' = UK, '<' = DEC Supplemental, 'K' = German)
+    private char g0Charset = 'B';
+    private char g1Charset = '0';
+    private char g2Charset = 'B';
+    private char g3Charset = 'B';
+    private int activeCharset = 0; // 0=G0, 1=G1, 2=G2, 3=G3
+    private int singleShiftCharset = -1; // -1 none, 2=G2 (SS2), 3=G3 (SS3)
 
     @FunctionalInterface
     public interface OutputSender {
         void sendRaw(byte[] data) throws IOException;
     }
 
+    @FunctionalInterface
+    public interface NvtTitleListener {
+        void onTitleChanged(String title);
+    }
+
+    public interface ClipboardHandler {
+        String getClipboardText();
+        void setClipboardText(String text);
+    }
+
     public NvtProcessor(ScreenBuffer screenBuffer, EbcdicTranslator translator) {
         this.screenBuffer = screenBuffer;
         this.translator = translator;
@@ -86,6 +126,14 @@ public class NvtProcessor {
         this.outputSender = outputSender;
     }
 
+    public void setClipboardHandler(ClipboardHandler clipboardHandler) {
+        this.clipboardHandler = clipboardHandler;
+    }
+
+    public ClipboardHandler getClipboardHandler() {
+        return clipboardHandler;
+    }
+
     public void addScreenUpdateListener(ScreenUpdateListener l) {
         screenListeners.add(l);
     }
@@ -94,10 +142,67 @@ public class NvtProcessor {
         screenListeners.remove(l);
     }
 
-    public boolean isCursorVisible() {
+    public void addTitleListener(NvtTitleListener l) {
-        return cursorVisible;
+        titleListeners.add(l);
     }
 
+    public void removeTitleListener(NvtTitleListener l) {
+        titleListeners.remove(l);
+    }
+
+    public String getTerminalTitle() {
+        return terminalTitle;
+    }
+
+    public void setTerminalTitle(String title) {
+        this.terminalTitle = (title != null) ? title : "";
+        for (NvtTitleListener l : titleListeners) {
+            try {
+                l.onTitleChanged(this.terminalTitle);
+            } catch (Exception e) {
+                log.warning("Error in NVT title listener: " + e.getMessage());
+            }
+        }
+    }
+
+    public boolean isCursorVisible() { return cursorVisible; }
+    public void setCursorVisible(boolean visible) { this.cursorVisible = visible; }
+
+    public boolean isApplicationKeypad() { return applicationKeypad; }
+    public void setApplicationKeypad(boolean appKeypad) { this.applicationKeypad = appKeypad; }
+
+    public boolean isApplicationCursorKeys() { return applicationCursorKeys; }
+    public void setApplicationCursorKeys(boolean appCursorKeys) { this.applicationCursorKeys = appCursorKeys; }
+
+    public boolean isOriginMode() { return originMode; }
+    public void setOriginMode(boolean originMode) { this.originMode = originMode; }
+
+    public boolean isAutoWrap() { return autoWrap; }
+    public void setAutoWrap(boolean autoWrap) { this.autoWrap = autoWrap; }
+
+    public boolean isInsertMode() { return insertMode; }
+    public void setInsertMode(boolean insertMode) { this.insertMode = insertMode; }
+
+    public boolean isReverseVideo() { return reverseVideo; }
+    public void setReverseVideo(boolean reverseVideo) { this.reverseVideo = reverseVideo; }
+
+    public boolean isNewLineMode() { return newLineMode; }
+    public void setNewLineMode(boolean newLineMode) { this.newLineMode = newLineMode; }
+
+    public boolean isAlternateBufferActive() { return alternateBufferActive; }
+
+    public String getPrimaryDeviceAttributes() { return primaryDeviceAttributes; }
+    public void setPrimaryDeviceAttributes(String da) { this.primaryDeviceAttributes = da; }
+
+    public String getSecondaryDeviceAttributes() { return secondaryDeviceAttributes; }
+    public void setSecondaryDeviceAttributes(String da2) { this.secondaryDeviceAttributes = da2; }
+
+    public char getG0Charset() { return g0Charset; }
+    public char getG1Charset() { return g1Charset; }
+    public char getG2Charset() { return g2Charset; }
+    public char getG3Charset() { return g3Charset; }
+    public int getActiveCharset() { return activeCharset; }
+
     /**
      * Process incoming ASCII NVT data bytes.
      */
@@ -129,6 +234,9 @@ public class NvtProcessor {
                 } else if (b == 0x0A) { // LF
                     int r = curAddr / cols;
                     int c = curAddr % cols;
+                    if (newLineMode) {
+                        c = 0; // CR + LF in New Line Mode
+                    }
                     if (r == effectiveScrollBottom) {
                         scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
                     } else if (r < rows - 1) {
@@ -160,27 +268,50 @@ public class NvtProcessor {
                     for (ScreenUpdateListener l : screenListeners) {
                         l.onSoundAlarm();
                     }
-                } else if (b == 0x0E) { // SO (Select G1 charset)
+                } else if (b == 0x0E) { // SO / LS1 (Select G1 charset)
-                    activeCharsetG1 = true;
+                    activeCharset = 1;
-                } else if (b == 0x0F) { // SI (Select G0 charset)
+                } else if (b == 0x0F) { // SI / LS0 (Select G0 charset)
-                    activeCharsetG1 = false;
+                    activeCharset = 0;
                 } else if (b >= 0x20 && b <= 0xFF) { // Printable character
-                    char ch = (char) b;
+                    char setDesignator;
-                    if (activeCharsetG1 ? lineDrawingG1 : lineDrawingG0) {
+                    if (singleShiftCharset >= 0) {
-                        ch = mapVt100SpecialGraphics(ch);
+                        setDesignator = (singleShiftCharset == 2) ? g2Charset : g3Charset;
+                        singleShiftCharset = -1; // Single shift applies only to next character
+                    } else {
+                        switch (activeCharset) {
+                            case 1: setDesignator = g1Charset; break;
+                            case 2: setDesignator = g2Charset; break;
+                            case 3: setDesignator = g3Charset; break;
+                            default: setDesignator = g0Charset; break;
+                        }
                     }
 
+                    char ch = translateCharacter((char) b, setDesignator);
+
                     int r = curAddr / cols;
                     int c = curAddr % cols;
 
                     if (c >= cols) {
-                        c = 0;
+                        if (autoWrap) {
-                        if (r == effectiveScrollBottom) {
+                            c = 0;
-                            scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
+                            if (r == effectiveScrollBottom) {
-                        } else if (r < rows - 1) {
+                                scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
-                            r++;
+                            } else if (r < rows - 1) {
+                                r++;
+                            }
+                            curAddr = r * cols + c;
+                        } else {
+                            c = cols - 1;
+                            curAddr = r * cols + c;
+                        }
+                    }
+
+                    if (insertMode) {
+                        // Shift characters right in line
+                        int lineStart = r * cols;
+                        for (int col = cols - 1; col > c; col--) {
+                            screenBuffer.getCell(lineStart + col).copyFrom(screenBuffer.getCell(lineStart + col - 1));
                         }
-                        curAddr = r * cols + c;
                     }
 
                     int ebc = translator.unicodeToEbcdic(ch);
@@ -194,17 +325,21 @@ public class NvtProcessor {
 
                     c++;
                     if (c >= cols) {
-                        if (r < rows - 1) {
+                        if (autoWrap) {
-                            if (r == effectiveScrollBottom) {
+                            if (r < rows - 1) {
-                                scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
+                                if (r == effectiveScrollBottom) {
-                                c = 0;
+                                    scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
+                                    c = 0;
+                                } else {
+                                    r++;
+                                    c = 0;
+                                }
                             } else {
-                                r++;
+                                scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
                                 c = 0;
                             }
                         } else {
-                            scrollUpRegion(effectiveScrollTop, effectiveScrollBottom);
+                            c = cols - 1; // Stay at right margin without wrapping
-                            c = 0;
                         }
                     }
                     curAddr = r * cols + c;
@@ -213,14 +348,26 @@ public class NvtProcessor {
                 escBuffer.write(b);
                 if (b == '[') {
                     parseState = STATE_CSI;
-                } else if (b == '(' || b == ')') {
+                } else if (b == ']') {
+                    parseState = STATE_OSC;
+                    escBuffer.reset();
+                    escBuffer.write(b);
+                } else if (b == '(' || b == ')' || b == '*' || b == '+') {
                     parseState = STATE_CHARSET;
                 } else if (b == '7') { // DECSC - Save cursor
                     savedCursorRow = curAddr / cols;
                     savedCursorCol = curAddr % cols;
+                    savedFg = currentFg;
+                    savedBg = currentBg;
+                    savedGr = currentGr;
+                    savedOriginMode = originMode;
                     parseState = STATE_NORMAL;
                 } else if (b == '8') { // DECRC - Restore cursor
                     curAddr = Math.min(rows - 1, savedCursorRow) * cols + Math.min(cols - 1, savedCursorCol);
+                    currentFg = savedFg;
+                    currentBg = savedBg;
+                    currentGr = savedGr;
+                    originMode = savedOriginMode;
                     parseState = STATE_NORMAL;
                 } else if (b == 'D') { // IND - Index (down 1 line)
                     int r = curAddr / cols;
@@ -266,8 +413,41 @@ public class NvtProcessor {
                     scrollTop = 0;
                     scrollBottom = rows - 1;
                     cursorVisible = true;
+                    applicationKeypad = false;
+                    applicationCursorKeys = false;
+                    originMode = false;
+                    autoWrap = true;
+                    insertMode = false;
+                    reverseVideo = false;
+                    newLineMode = false;
+                    g0Charset = 'B';
+                    g1Charset = '0';
+                    g2Charset = 'B';
+                    g3Charset = 'B';
+                    activeCharset = 0;
+                    singleShiftCharset = -1;
                     initTabStops();
                     parseState = STATE_NORMAL;
+                } else if (b == '=') { // DECKPAM - Keypad Application Mode
+                    applicationKeypad = true;
+                    parseState = STATE_NORMAL;
+                } else if (b == '>') { // DECKPNM - Keypad Numeric Mode
+                    applicationKeypad = false;
+                    parseState = STATE_NORMAL;
+                } else if (b == 'N') { // SS2 - Single Shift G2
+                    singleShiftCharset = 2;
+                    parseState = STATE_NORMAL;
+                } else if (b == 'O') { // SS3 - Single Shift G3
+                    singleShiftCharset = 3;
+                    parseState = STATE_NORMAL;
+                } else if (b == 'n') { // LS2 - Locking Shift 2 -> G2
+                    activeCharset = 2;
+                    parseState = STATE_NORMAL;
+                } else if (b == 'o') { // LS3 - Locking Shift 3 -> G3
+                    activeCharset = 3;
+                    parseState = STATE_NORMAL;
+                } else if (b == '\\') { // ST - String Terminator
+                    parseState = STATE_NORMAL;
                 } else {
                     // Unknown 2-byte escape, return to normal
                     parseState = STATE_NORMAL;
@@ -275,12 +455,36 @@ public class NvtProcessor {
             } else if (parseState == STATE_CHARSET) {
                 byte[] seq = escBuffer.toByteArray();
                 if (seq.length >= 2) {
-                    boolean isG1 = (seq[1] == ')');
+                    char target = (char) seq[1];
-                    boolean isLineDraw = (b == '0');
+                    char designator = (char) b;
-                    if (isG1) lineDrawingG1 = isLineDraw;
+                    if (target == '(') g0Charset = designator;
-                    else lineDrawingG0 = isLineDraw;
+                    else if (target == ')') g1Charset = designator;
+                    else if (target == '*') g2Charset = designator;
+                    else if (target == '+') g3Charset = designator;
                 }
                 parseState = STATE_NORMAL;
+            } else if (parseState == STATE_OSC) {
+                if (b == 0x07) { // BEL terminator
+                    handleOSC(escBuffer.toByteArray());
+                    parseState = STATE_NORMAL;
+                } else if (b == 0x1B) { // Possible ESC \ (ST)
+                    parseState = STATE_OSC_ESC;
+                } else if (b == 0x9C) { // 8-bit ST
+                    handleOSC(escBuffer.toByteArray());
+                    parseState = STATE_NORMAL;
+                } else {
+                    escBuffer.write(b);
+                }
+            } else if (parseState == STATE_OSC_ESC) {
+                if (b == '\\') { // ESC \ (ST) terminator
+                    handleOSC(escBuffer.toByteArray());
+                    parseState = STATE_NORMAL;
+                } else {
+                    // False alarm on ST, put ESC and byte into OSC buffer
+                    escBuffer.write(0x1B);
+                    escBuffer.write(b);
+                    parseState = STATE_OSC;
+                }
             } else if (parseState == STATE_CSI) {
                 escBuffer.write(b);
                 // CSI final bytes are in the range 0x40..0x7E
@@ -298,6 +502,81 @@ public class NvtProcessor {
         notifyScreenUpdated();
     }
 
+    /**
+     * Handle Operating System Command (OSC) escape sequences.
+     */
+    public void handleOSC(byte[] oscData) {
+        if (oscData == null || oscData.length == 0) return;
+
+        int start = 0;
+        if (oscData[0] == ']') {
+            start = 1;
+        }
+        if (start >= oscData.length) return;
+
+        String oscStr = new String(oscData, start, oscData.length - start, StandardCharsets.UTF_8);
+        int semi = oscStr.indexOf(';');
+        if (semi < 0) return;
+
+        String psStr = oscStr.substring(0, semi).trim();
+        String pt = oscStr.substring(semi + 1);
+
+        int ps;
+        try {
+            ps = Integer.parseInt(psStr);
+        } catch (NumberFormatException e) {
+            return;
+        }
+
+        switch (ps) {
+            case 0: // Set icon name and window title
+            case 2: // Set window title
+                setTerminalTitle(pt);
+                break;
+            case 1: // Set icon name
+                // No-op or update title if desired
+                break;
+            case 52: // OSC 52 Clipboard operations (read/write Base64 data)
+                handleOsc52(pt);
+                break;
+            default:
+                log.fine("Unhandled OSC command: " + ps);
+                break;
+        }
+    }
+
+    private void handleOsc52(String pt) {
+        // Format: [target];[base64Data]
+        int semi = pt.indexOf(';');
+        String target = "c";
+        String data = pt;
+        if (semi >= 0) {
+            target = pt.substring(0, semi);
+            data = pt.substring(semi + 1);
+        }
+
+        if ("?".equals(data)) {
+            // Clipboard query request: reply with OSC 52 containing base64 encoded clipboard
+            if (clipboardHandler != null) {
+                String text = clipboardHandler.getClipboardText();
+                if (text == null) text = "";
+                String b64 = Base64.getEncoder().encodeToString(text.getBytes(StandardCharsets.UTF_8));
+                sendResponseString(String.format("\u001B]52;%s;%s\u0007", target, b64));
+            }
+        } else {
+            // Clipboard write request: decode base64 and set to clipboard handler
+            try {
+                byte[] decoded = Base64.getDecoder().decode(data.getBytes(StandardCharsets.US_ASCII));
+                String text = new String(decoded, StandardCharsets.UTF_8);
+                if (clipboardHandler != null) {
+                    clipboardHandler.setClipboardText(text);
+                }
+            } catch (Exception e) {
+                log.warning("Invalid OSC 52 Base64 data: " + e.getMessage());
+            }
+        }
+    }
+
     /**
      * Parse and execute an ANSI CSI escape sequence.
      * Returns updated cursor address.
@@ -314,26 +593,60 @@ public class NvtProcessor {
         int r = curAddr / cols;
         int c = curAddr % cols;
 
+        // Check for DECSTR: ESC [ ! p (DEC Soft Terminal Reset)
+        if (finalByte == 'p' && (paramStr.startsWith("!") || paramStr.contains("!"))) {
+            cursorVisible = true;
+            scrollTop = 0;
+            scrollBottom = rows - 1;
+            applicationCursorKeys = false;
+            applicationKeypad = false;
+            originMode = false;
+            autoWrap = true;
+            insertMode = false;
+            currentFg = 0;
+            currentBg = 0;
+            currentGr = 0;
+            g0Charset = 'B';
+            g1Charset = '0';
+            g2Charset = 'B';
+            g3Charset = 'B';
+            activeCharset = 0;
+            singleShiftCharset = -1;
+            savedCursorRow = 0;
+            savedCursorCol = 0;
+            savedFg = 0;
+            savedBg = 0;
+            savedGr = 0;
+            savedOriginMode = false;
+            return curAddr;
+        }
+
         switch (finalByte) {
             case 'H': // CUP - Cursor Position
             case 'f': // HVP - Horizontal and Vertical Position
             {
                 int p1 = parseParam(params, 0, 1) - 1;
                 int p2 = parseParam(params, 1, 1) - 1;
-                r = Math.max(0, Math.min(rows - 1, p1));
+                if (originMode) {
+                    r = Math.max(effectiveScrollTop, Math.min(effectiveScrollBottom, effectiveScrollTop + p1));
+                } else {
+                    r = Math.max(0, Math.min(rows - 1, p1));
+                }
                 c = Math.max(0, Math.min(cols - 1, p2));
                 return r * cols + c;
             }
             case 'A': // CUU - Cursor Up
             {
                 int count = parseParam(params, 0, 1);
-                r = Math.max(0, r - count);
+                int topLimit = originMode ? effectiveScrollTop : 0;
+                r = Math.max(topLimit, r - count);
                 return r * cols + c;
             }
             case 'B': // CUD - Cursor Down
             {
                 int count = parseParam(params, 0, 1);
-                r = Math.min(rows - 1, r + count);
+                int botLimit = originMode ? effectiveScrollBottom : rows - 1;
+                r = Math.min(botLimit, r + count);
                 return r * cols + c;
             }
             case 'C': // CUF - Cursor Forward
@@ -351,13 +664,15 @@ public class NvtProcessor {
             case 'E': // CNL - Cursor Next Line
             {
                 int count = parseParam(params, 0, 1);
-                r = Math.min(rows - 1, r + count);
+                int botLimit = originMode ? effectiveScrollBottom : rows - 1;
+                r = Math.min(botLimit, r + count);
                 return r * cols; // column 0
             }
             case 'F': // CPL - Cursor Previous Line
             {
                 int count = parseParam(params, 0, 1);
-                r = Math.max(0, r - count);
+                int topLimit = originMode ? effectiveScrollTop : 0;
+                r = Math.max(topLimit, r - count);
                 return r * cols; // column 0
             }
             case 'G': // CHA - Cursor Horizontal Absolute
@@ -370,7 +685,11 @@ public class NvtProcessor {
             case 'd': // VPA - Vertical Position Absolute
             {
                 int p = parseParam(params, 0, 1) - 1;
-                r = Math.max(0, Math.min(rows - 1, p));
+                if (originMode) {
+                    r = Math.max(effectiveScrollTop, Math.min(effectiveScrollBottom, effectiveScrollTop + p));
+                } else {
+                    r = Math.max(0, Math.min(rows - 1, p));
+                }
                 return r * cols + c;
             }
             case 'J': // ED - Erase in Display
@@ -476,7 +795,7 @@ public class NvtProcessor {
                     scrollTop = 0;
                     scrollBottom = rows - 1;
                 }
-                return 0; // Move cursor to home
+                return originMode ? (scrollTop * cols) : 0; // Move cursor to home
             }
             case 'm': // SGR - Select Graphic Rendition
             {
@@ -497,25 +816,51 @@ public class NvtProcessor {
             }
             case 'n': // DSR - Device Status Report
             {
-                int code = parseParam(params, 0, 0);
+                if (paramStr.startsWith("?")) {
-                if (code == 6) { // Cursor position request
+                    int code = parseParam(params, 0, 0);
-                    // Reply: ESC [ <row> ; <col> R (1-indexed)
+                    if (code == 6) { // Extended Cursor Position Report (DECXCPR)
-                    String response = String.format("\u001B[%d;%dR", r + 1, c + 1);
+                        int repRow = (originMode ? r - effectiveScrollTop : r) + 1;
-                    sendResponseString(response);
+                        int repCol = c + 1;
-                } else if (code == 5) { // Status report request
+                        String response = String.format("\u001B[?%d;%d;1R", repRow, repCol);
-                    sendResponseString("\u001B[0n"); // OK
+                        sendResponseString(response);
+                    } else if (code == 15) { // Printer Status Report
+                        sendResponseString("\u001B[?13n"); // No printer attached / ready
+                    } else if (code == 25) { // User-defined keys (UDK) / Cursor status
+                        sendResponseString(cursorVisible ? "\u001B[?20n" : "\u001B[?21n");
+                    } else if (code == 26) { // Keyboard dialect status
+                        sendResponseString("\u001B[?27;1n"); // North American / US keyboard
+                    } else if (code == 62 || code == 63) { // Macro / Memory Checksum
+                        sendResponseString("\u001B[?63;0n");
+                    }
+                } else {
+                    int code = parseParam(params, 0, 0);
+                    if (code == 6) { // Cursor position request (1-indexed)
+                        String response = String.format("\u001B[%d;%dR", r + 1, c + 1);
+                        sendResponseString(response);
+                    } else if (code == 5) { // Status report request
+                        sendResponseString("\u001B[0n"); // OK
+                    }
                 }
                 return curAddr;
             }
             case 'c': // DA - Device Attributes
             {
-                int code = parseParam(params, 0, 0);
+                if (paramStr.startsWith(">")) {
-                if (code == 0) {
+                    // Secondary DA (DA2)
-                    // Identify as standard VT100 with Advanced Video Option
+                    sendResponseString(secondaryDeviceAttributes);
-                    sendResponseString("\u001B[?1;2c");
+                } else {
+                    // Primary DA
+                    sendResponseString(primaryDeviceAttributes);
                 }
                 return curAddr;
             }
+            case 'x': // DECREQTPARM - Request Terminal Parameters
+            {
+                int sol = parseParam(params, 0, 1);
+                int repType = (sol == 0) ? 2 : 3;
+                sendResponseString(String.format("\u001B[%d;1;1;120;120;1;0x", repType));
+                return curAddr;
+            }
             case 'g': // TBC - Tab Clear
             {
                 int mode = parseParam(params, 0, 0);
@@ -529,9 +874,16 @@ public class NvtProcessor {
             case 'h': // Set Mode / Private Mode
             {
                 if (paramStr.startsWith("?")) {
-                    String sub = paramStr.substring(1).trim();
+                    String[] subParams = paramStr.substring(1).split(";");
-                    if ("25".equals(sub)) {
+                    for (String sub : subParams) {
-                        cursorVisible = true;
+                        int mode = parseParam(new String[]{sub}, 0, 0);
+                        curAddr = applyDecPrivateMode(mode, true, curAddr, rows, cols);
+                    }
+                } else {
+                    for (String p : params) {
+                        int mode = parseParam(new String[]{p}, 0, 0);
+                        if (mode == 4) insertMode = true; // IRM - Insert Mode
+                        else if (mode == 20) newLineMode = true; // LNM - New Line Mode
                     }
                 }
                 return curAddr;
@@ -539,9 +891,16 @@ public class NvtProcessor {
             case 'l': // Reset Mode / Private Mode
             {
                 if (paramStr.startsWith("?")) {
-                    String sub = paramStr.substring(1).trim();
+                    String[] subParams = paramStr.substring(1).split(";");
-                    if ("25".equals(sub)) {
+                    for (String sub : subParams) {
-                        cursorVisible = false;
+                        int mode = parseParam(new String[]{sub}, 0, 0);
+                        curAddr = applyDecPrivateMode(mode, false, curAddr, rows, cols);
+                    }
+                } else {
+                    for (String p : params) {
+                        int mode = parseParam(new String[]{p}, 0, 0);
+                        if (mode == 4) insertMode = false; // IRM - Replace Mode
+                        else if (mode == 20) newLineMode = false; // LNM - Line Feed Mode
                     }
                 }
                 return curAddr;
@@ -549,16 +908,185 @@ public class NvtProcessor {
             case 's': // Save cursor
                 savedCursorRow = r;
                 savedCursorCol = c;
+                savedFg = currentFg;
+                savedBg = currentBg;
+                savedGr = currentGr;
+                savedOriginMode = originMode;
                 return curAddr;
             case 'u': // Restore cursor
                 r = Math.min(rows - 1, savedCursorRow);
                 c = Math.min(cols - 1, savedCursorCol);
+                currentFg = savedFg;
+                currentBg = savedBg;
+                currentGr = savedGr;
+                originMode = savedOriginMode;
                 return r * cols + c;
             default:
                 return curAddr;
         }
     }
 
+    private int applyDecPrivateMode(int mode, boolean set, int curAddr, int rows, int cols) {
+        switch (mode) {
+            case 1: // DECCKM - Cursor Keys Mode
+                applicationCursorKeys = set;
+                break;
+            case 3: // DECCOLM - Column Mode (80 vs 132 columns)
+                screenBuffer.clear();
+                scrollTop = 0;
+                scrollBottom = rows - 1;
+                return 0;
+            case 5: // DECSCNM - Screen Mode (Reverse Video)
+                reverseVideo = set;
+                break;
+            case 6: // DECOM - Origin Mode
+                originMode = set;
+                return (originMode ? scrollTop : 0) * cols;
+            case 7: // DECAWM - Auto Wrap Mode
+                autoWrap = set;
+                break;
+            case 25: // DECTCEM - Text Cursor Enable
+                cursorVisible = set;
+                break;
+            case 47:
+            case 1047:
+            case 1048:
+            case 1049: // Alternate Screen Buffer modes
+                alternateBufferActive = set;
+                if (mode == 1049 && set) {
+                    screenBuffer.clear();
+                    return 0;
+                }
+                break;
+            default:
+                break;
+        }
+        return curAddr;
+    }
+
+    /**
+     * Translate key codes in VT application keypad mode (DECKPAM).
+     */
+    public byte[] processApplicationKeypad(int keyCode) {
+        String seq = mapKeypadKey(keyCode);
+        return seq != null ? seq.getBytes(StandardCharsets.US_ASCII) : null;
+    }
+
+    public String mapKeypadKey(int keyCode) {
+        if (!applicationKeypad) return null;
+        switch (keyCode) {
+            case 0x60: case 0x30: return "\u001BOp"; // 0
+            case 0x61: case 0x31: return "\u001BOq"; // 1
+            case 0x62: case 0x32: return "\u001BOr"; // 2
+            case 0x63: case 0x33: return "\u001BOs"; // 3
+            case 0x64: case 0x34: return "\u001BOt"; // 4
+            case 0x65: case 0x35: return "\u001BOu"; // 5
+            case 0x66: case 0x36: return "\u001BOv"; // 6
+            case 0x67: case 0x37: return "\u001BOw"; // 7
+            case 0x68: case 0x38: return "\u001BOx"; // 8
+            case 0x69: case 0x39: return "\u001BOy"; // 9
+            case 0x6D: case 0x2D: return "\u001BOm"; // Minus (-)
+            case 0x2C: return "\u001BOl"; // Comma (,)
+            case 0x6E: case 0x2E: return "\u001BOn"; // Period (.)
+            case 0x0A: return "\u001BOM"; // Keypad Enter
+            case 0x6F: case 0x2F: return "\u001BOQ"; // Slash (/)
+            case 0x6A: case 0x2A: return "\u001BOR"; // Asterisk (*)
+            case 0x6B: case 0x2B: return "\u001BOS"; // Plus (+)
+            default: return null;
+        }
+    }
+
+    /**
+     * Map a full key event (key code, character, modifiers) into standard VT / NVT byte sequence.
+     */
+    public String mapKey(int keyCode, char keyChar, boolean shift, boolean ctrl, boolean alt) {
+        // Check application keypad first if enabled
+        if (applicationKeypad) {
+            String kp = mapKeypadKey(keyCode);
+            if (kp != null) return kp;
+        }
+
+        // Cursor navigation keys
+        switch (keyCode) {
+            case 0x26: // VK_UP
+                return applicationCursorKeys ? "\u001BOA" : "\u001B[A";
+            case 0x28: // VK_DOWN
+                return applicationCursorKeys ? "\u001BOB" : "\u001B[B";
+            case 0x27: // VK_RIGHT
+                return applicationCursorKeys ? "\u001BOC" : "\u001B[C";
+            case 0x25: // VK_LEFT
+                return applicationCursorKeys ? "\u001BOD" : "\u001B[D";
+            case 0x24: // VK_HOME
+                return "\u001B[1~";
+            case 0x23: // VK_END
+                return "\u001B[4~";
+            case 0x21: // VK_PAGE_UP
+                return "\u001B[5~";
+            case 0x22: // VK_PAGE_DOWN
+                return "\u001B[6~";
+            case 0x9B: // VK_INSERT
+                return "\u001B[2~";
+            case 0x7F: case 0x08: // VK_DELETE / BACKSPACE
+                if (keyCode == 0x7F || keyCode == 0x93) return "\u001B[3~";
+                return "\b";
+            case 0x09: // VK_TAB
+                return shift ? "\u001B[Z" : "\t";
+            case 0x0A: // VK_ENTER
+                return newLineMode ? "\r\n" : "\r";
+        }
+
+        // Function keys F1..F20
+        if (keyCode >= 0x70 && keyCode <= 0x83) { // VK_F1..VK_F20
+            int fn = keyCode - 0x70 + 1;
+            return getFunctionKeySequence(fn);
+        }
+
+        if (ctrl && !alt) {
+            if (keyCode >= 0x41 && keyCode <= 0x5A) {
+                char ctrlChar = (char) (keyCode - 0x41 + 1);
+                return String.valueOf(ctrlChar);
+            } else if (keyCode == 0xDB) { // VK_OPEN_BRACKET
+                return "\u001B";
+            } else if (keyCode == 0xDC) { // VK_BACK_SLASH
+                return "\u001C";
+            } else if (keyCode == 0xDD) { // VK_CLOSE_BRACKET
+                return "\u001D";
+            }
+        }
+
+        if (keyChar != 0 && keyChar != 0xFFFF && !ctrl && !alt) {
+            return String.valueOf(keyChar);
+        }
+
+        return null;
+    }
+
+    public String getFunctionKeySequence(int n) {
+        switch (n) {
+            case 1: return "\u001BOP";
+            case 2: return "\u001BOQ";
+            case 3: return "\u001BOR";
+            case 4: return "\u001BOS";
+            case 5: return "\u001B[15~";
+            case 6: return "\u001B[17~";
+            case 7: return "\u001B[18~";
+            case 8: return "\u001B[19~";
+            case 9: return "\u001B[20~";
+            case 10: return "\u001B[21~";
+            case 11: return "\u001B[23~";
+            case 12: return "\u001B[24~";
+            case 13: return "\u001B[25~";
+            case 14: return "\u001B[26~";
+            case 15: return "\u001B[28~";
+            case 16: return "\u001B[29~";
+            case 17: return "\u001B[31~";
+            case 18: return "\u001B[32~";
+            case 19: return "\u001B[33~";
+            case 20: return "\u001B[34~";
+            default: return "";
+        }
+    }
+
     private void sendResponseString(String s) {
         if (outputSender != null) {
             try {
@@ -573,7 +1101,9 @@ public class NvtProcessor {
         if (params != null && idx < params.length && !params[idx].trim().isEmpty()) {
             try {
                 String val = params[idx].trim();
-                if (val.startsWith("?")) val = val.substring(1);
+                if (val.startsWith("?") || val.startsWith(">") || val.startsWith("!")) {
+                    val = val.substring(1).trim();
+                }
                 return Integer.parseInt(val);
             } catch (NumberFormatException ignored) {}
         }
@@ -628,6 +1158,32 @@ public class NvtProcessor {
         }
     }
 
+    private char translateCharacter(char c, char charset) {
+        switch (charset) {
+            case '0': // DEC Special Graphics / Line Drawing
+                return mapVt100SpecialGraphics(c);
+            case 'A': // UK National (maps # to £)
+                if (c == '#') return '£';
+                return c;
+            case 'K': // German
+                switch (c) {
+                    case '@': return '§';
+                    case '[': return 'Ä';
+                    case '\\': return 'Ö';
+                    case ']': return 'Ü';
+                    case '{': return 'ä';
+                    case '|': return 'ö';
+                    case '}': return 'ü';
+                    case '~': return 'ß';
+                    default: return c;
+                }
+            case '<': // DEC Supplemental
+            case 'B': // US ASCII / Latin-1
+            default:
+                return c;
+        }
+    }
+
     private char mapVt100SpecialGraphics(char c) {
         switch (c) {
             case 'j': return '┘';
@@ -708,7 +1264,11 @@ public class NvtProcessor {
     public void sendNVTChar(char c) throws IOException {
         if (outputSender != null) {
             if (c == '\n') {
-                outputSender.sendRaw(new byte[] { (byte) '\r', (byte) '\n' });
+                if (newLineMode) {
+                    outputSender.sendRaw(new byte[] { (byte) '\r', (byte) '\n' });
+                } else {
+                    outputSender.sendRaw(new byte[] { (byte) '\n' });
+                }
             } else {
                 outputSender.sendRaw(new byte[] { (byte) c });
             }

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PD3270.java

@@ -20,6 +20,7 @@ public class PD3270 {
     private static final Logger log = Logger.getLogger(PD3270.class.getName());
 
     private final PrinterConfig config;
+    private PrinterDefinitionTable pdt;
     private String destination;
     private boolean open = false;
 
@@ -38,6 +39,7 @@ public class PD3270 {
 
     public PD3270(PrinterConfig config) {
         this.config = config != null ? config : new PrinterConfig();
+        this.pdt = this.config.getPrinterDefinitionTable();
         this.destination = this.config.getDestinationTarget();
     }
 
@@ -118,6 +120,13 @@ public class PD3270 {
         if (!open) {
             openPrinter(destination);
         }
+        if (pdt != null) {
+            byte[] translated = pdt.translateChar(c);
+            if (translated != null && translated.length > 0) {
+                writePrintBytes(translated, 0, translated.length);
+                return;
+            }
+        }
         try {
             byte[] b = String.valueOf(c).getBytes(outputCharset);
             memoryStream.write(b);
@@ -141,6 +150,12 @@ public class PD3270 {
         if (!open) {
             openPrinter(destination);
         }
+        if (pdt != null) {
+            for (int i = 0; i < s.length(); i++) {
+                writePrintChar(s.charAt(i));
+            }
+            return;
+        }
         try {
             byte[] b = s.getBytes(outputCharset);
             memoryStream.write(b);
@@ -168,10 +183,149 @@ public class PD3270 {
      */
     public synchronized void formFeed() {
         pageCount++;
-        writePrintChar('\f');
+        if (pdt != null && pdt.hasControlCode(PrinterDefinitionTable.CMD_PAGE_FEED)) {
+            writeControlCode(PrinterDefinitionTable.CMD_PAGE_FEED);
+        } else {
+            writePrintChar('\f');
+        }
         flush();
     }
 
+    /**
+     * Send raw PDT control sequence if defined.
+     */
+    public synchronized void writeControlCode(String commandName) {
+        if (pdt != null && commandName != null) {
+            byte[] seq = pdt.getControlCode(commandName);
+            if (seq != null && seq.length > 0) {
+                writePrintBytes(seq, 0, seq.length);
+            }
+        }
+    }
+
+    /**
+     * Initialize / start print job using PDT if available.
+     */
+    public synchronized void startJob() {
+        if (pdt != null && pdt.hasControlCode(PrinterDefinitionTable.CMD_START_JOB)) {
+            writeControlCode(PrinterDefinitionTable.CMD_START_JOB);
+        }
+    }
+
+    /**
+     * End / finish print job using PDT if available.
+     */
+    public synchronized void endJob() {
+        if (pdt != null && pdt.hasControlCode(PrinterDefinitionTable.CMD_END_JOB)) {
+            writeControlCode(PrinterDefinitionTable.CMD_END_JOB);
+        }
+        flush();
+    }
+
+    /**
+     * Toggle bold / emphasized printing.
+     */
+    public synchronized void setBold(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_BOLD : PrinterDefinitionTable.CMD_END_BOLD);
+    }
+
+    /**
+     * Toggle underline printing.
+     */
+    public synchronized void setUnderline(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_UNDERLINE : PrinterDefinitionTable.CMD_END_UNDERLINE);
+    }
+
+    /**
+     * Toggle italic printing.
+     */
+    public synchronized void setItalic(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_ITALIC : PrinterDefinitionTable.CMD_END_ITALIC);
+    }
+
+    /**
+     * Toggle double-strike printing.
+     */
+    public synchronized void setDoubleStrike(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_DOUBLE_STRIKE : PrinterDefinitionTable.CMD_END_DOUBLE_STRIKE);
+    }
+
+    /**
+     * Toggle double-width character expansion.
+     */
+    public synchronized void setDoubleWidth(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_DOUBLE_WIDTH : PrinterDefinitionTable.CMD_END_DOUBLE_WIDTH);
+    }
+
+    /**
+     * Toggle subscript printing.
+     */
+    public synchronized void setSubscript(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_SUBSCRIPT : PrinterDefinitionTable.CMD_END_SUBSCRIPT);
+    }
+
+    /**
+     * Toggle superscript printing.
+     */
+    public synchronized void setSuperscript(boolean enable) {
+        writeControlCode(enable ? PrinterDefinitionTable.CMD_START_SUPERSCRIPT : PrinterDefinitionTable.CMD_END_SUPERSCRIPT);
+    }
+
+    /**
+     * Set Characters Per Inch (CPI) via PDT.
+     */
+    public synchronized void setCPI(int cpi) {
+        switch (cpi) {
+            case 10: writeControlCode(PrinterDefinitionTable.CMD_SET_CPI_10); break;
+            case 12: writeControlCode(PrinterDefinitionTable.CMD_SET_CPI_12); break;
+            case 15: writeControlCode(PrinterDefinitionTable.CMD_SET_CPI_15); break;
+            case 17: writeControlCode(PrinterDefinitionTable.CMD_SET_CPI_17); break;
+            default: break;
+        }
+    }
+
+    /**
+     * Set Lines Per Inch (LPI) via PDT.
+     */
+    public synchronized void setLPI(int lpi) {
+        switch (lpi) {
+            case 6: writeControlCode(PrinterDefinitionTable.CMD_SET_LPI_6); break;
+            case 8: writeControlCode(PrinterDefinitionTable.CMD_SET_LPI_8); break;
+            default: break;
+        }
+    }
+
+    /**
+     * Process GDDM host print escape sequence or raw host passthrough.
+     */
+    public synchronized void processGddmEscape(byte[] escapeSeq, int offset, int length) {
+        if (escapeSeq == null || length <= 0 || offset < 0 || offset + length > escapeSeq.length) {
+            return;
+        }
+        writePrintBytes(escapeSeq, offset, length);
+    }
+
+    /**
+     * High-level print string method.
+     */
+    public synchronized void print(String text) {
+        writePrintString(text);
+    }
+
+    /**
+     * High-level print byte array method.
+     */
+    public synchronized void print(byte[] data, int offset, int length) {
+        writePrintBytes(data, offset, length);
+    }
+
+    /**
+     * High-level print single character method.
+     */
+    public synchronized void print(char c) {
+        writePrintChar(c);
+    }
+
     /**
      * Flush all buffered print data to target stream.
      */
@@ -270,4 +424,12 @@ public class PD3270 {
             this.outputCharset = charset;
         }
     }
+
+    public PrinterDefinitionTable getPDT() {
+        return pdt;
+    }
+
+    public void setPDT(PrinterDefinitionTable pdt) {
+        this.pdt = pdt != null ? pdt : PrinterDefinitionTable.createPlainTextPDT();
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PrintPS3270.java

@@ -35,6 +35,10 @@ public class PrintPS3270 {
 
     private int currentPrintFormat = PrinterConstants.PRINT_FMT_80_COL;
 
+    // Auto-Flush Timer (Phase 7)
+    private java.util.Timer autoFlushTimer;
+    private final Object timerLock = new Object();
+
     public PrintPS3270(PrinterConfig config, PD3270 pd, EbcdicTranslator translator) {
         this.config = config != null ? config : new PrinterConfig();
         this.pd = pd != null ? pd : new PD3270(this.config);
@@ -251,7 +255,48 @@ public class PrintPS3270 {
         }
 
         if (startPrint) {
+            cancelAutoFlush();
             flushPrintBuffer();
+        } else {
+            scheduleAutoFlush();
+        }
+    }
+
+    public synchronized void processPrintComplete() {
+        cancelAutoFlush();
+        flushPrintBuffer();
+        if (config.isFormFeedAtEoj()) {
+            pd.formFeed();
+        }
+        if (config.isAutoFlushOnEoj()) {
+            pd.flush();
+        }
+        pd.endJob();
+    }
+
+    public void scheduleAutoFlush() {
+        long timeout = config.getAutoFlushTimeoutMs();
+        if (timeout <= 0) return;
+        synchronized (timerLock) {
+            cancelAutoFlush();
+            autoFlushTimer = new java.util.Timer("PrintPS3270-AutoFlush", true);
+            autoFlushTimer.schedule(new java.util.TimerTask() {
+                @Override
+                public void run() {
+                    synchronized (PrintPS3270.this) {
+                        flushPrintBuffer();
+                    }
+                }
+            }, timeout);
+        }
+    }
+
+    public void cancelAutoFlush() {
+        synchronized (timerLock) {
+            if (autoFlushTimer != null) {
+                autoFlushTimer.cancel();
+                autoFlushTimer = null;
+            }
         }
     }
 

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PrintSCS3270.java

@@ -81,6 +81,26 @@ public class PrintSCS3270 {
         this.lineModified = false;
     }
 
+    /**
+     * Process host data stream containing SCS orders and characters.
+     * @param data Byte array from host.
+     */
+    public synchronized void processRecord(byte[] data) {
+        if (data != null) {
+            processRecord(data, 0, data.length);
+        }
+    }
+
+    /**
+     * Process host data stream containing SCS orders and characters.
+     * @param data Byte array from host.
+     * @param offset Starting offset.
+     * @param length Number of bytes to process.
+     */
+    public synchronized void processRecord(byte[] data, int offset, int length) {
+        processHostData(data, offset, length);
+    }
+
     /**
      * Process host data stream containing SCS orders and characters.
      * @param data Byte array from host.
@@ -108,8 +128,6 @@ public class PrintSCS3270 {
                 int paramLen = (idx + 2 < end) ? (data[idx + 2] & 0xFF) : 0;
                 int orderTotalLen = 2 + (paramLen > 0 ? (paramLen + 1) : 1); // 0x2B + SubOrder + paramLen + payload
 
-                // In standard SCS, paramLen byte specifies length of following parameters
-                // or paramLen is total length including length byte.
                 int bytesAvailable = end - idx;
                 int sliceLen = Math.min(orderTotalLen, bytesAvailable);
 
@@ -126,6 +144,9 @@ public class PrintSCS3270 {
                     case PrinterConstants.SCS_STO:
                         processSetTextOrientation(data, idx, sliceLen);
                         break;
+                    case PrinterConstants.SCS_SCS:
+                        processSelectCharacterSet(data, idx, sliceLen);
+                        break;
                     case PrinterConstants.SCS_SEAC:
                         processSetEnhancedAttribute(data, idx, sliceLen);
                         break;
@@ -135,6 +156,9 @@ public class PrintSCS3270 {
                     case PrinterConstants.SCS_PPV:
                         processPresentationPositionVertical(data, idx, sliceLen);
                         break;
+                    case PrinterConstants.SCS_GEA:
+                        processSetGraphicErrorAction(data, idx, sliceLen);
+                        break;
                     default:
                         log.fine("Unrecognized 0x2B SCS sub-order: 0x" + Integer.toHexString(subOrder));
                         break;
@@ -154,12 +178,12 @@ public class PrintSCS3270 {
                 continue;
             }
 
-            // Check TRS (Transparent Stream 0x35)
+            // Check TRN / TRS (Transparent Stream 0x35)
-            if (b == PrinterConstants.SCS_TRS) {
+            if (b == PrinterConstants.SCS_TRN) {
                 if (idx + 1 < end) {
                     int trsLen = data[idx + 1] & 0xFF;
                     int actualTrs = Math.min(trsLen, end - (idx + 2));
-                    processTransparentStream(data, idx + 2, actualTrs);
+                    processTRN(data, idx + 2, actualTrs);
                     idx += 2 + actualTrs;
                 } else {
                     idx = end;
@@ -167,52 +191,83 @@ public class PrintSCS3270 {
                 continue;
             }
 
-            // Check Single-Byte SCS Controls
+            // Check Single-Byte SCS Controls (Full 28-command set)
             switch (b) {
                 case PrinterConstants.SCS_NUL:
-                    // Null - ignored
+                case PrinterConstants.SCS_NOP:
+                    // Null / No-op - ignored
                     idx++;
                     break;
+                case PrinterConstants.SCS_VCS:
+                    if (idx + 1 < end) {
+                        int chan = data[idx + 1] & 0xFF;
+                        processVCS(chan);
+                        idx += 2;
+                    } else {
+                        idx++;
+                    }
+                    break;
                 case PrinterConstants.SCS_CR:
-                    carriageReturn();
+                case PrinterConstants.SCS_RCR:
+                    processCR();
                     idx++;
                     break;
                 case PrinterConstants.SCS_LF:
-                    lineFeed();
+                    processLF();
                     idx++;
                     break;
                 case PrinterConstants.SCS_NL:
                 case PrinterConstants.SCS_RNLS:
-                    newLine();
+                    processNL();
                     idx++;
                     break;
                 case PrinterConstants.SCS_FF:
-                    formFeed();
+                    processFF();
                     idx++;
                     break;
                 case PrinterConstants.SCS_BS:
                 case PrinterConstants.SCS_NBS:
-                    backspace();
+                    processBS();
                     idx++;
                     break;
                 case PrinterConstants.SCS_HT:
-                    processHorizontalTab();
+                    processHT();
                     idx++;
                     break;
                 case PrinterConstants.SCS_VT:
-                    processVerticalTab();
+                    processVT();
+                    idx++;
+                    break;
+                case PrinterConstants.SCS_SO:
+                    processSO();
+                    idx++;
+                    break;
+                case PrinterConstants.SCS_SI:
+                    processSI();
                     idx++;
                     break;
                 case PrinterConstants.SCS_ENP:
-                    presentationEnabled = true;
+                    processENP();
                     idx++;
                     break;
                 case PrinterConstants.SCS_INP:
-                    presentationEnabled = false;
+                    processINP();
+                    idx++;
+                    break;
+                case PrinterConstants.SCS_POC:
+                    processPOC(null);
                     idx++;
                     break;
                 case PrinterConstants.SCS_BEL:
-                    // Sound alarm
+                    processBEL();
+                    idx++;
+                    break;
+                case PrinterConstants.SCS_IRS:
+                    processIRS();
+                    idx++;
+                    break;
+                case PrinterConstants.SCS_SUB:
+                    processSUB();
                     idx++;
                     break;
                 case PrinterConstants.SCS_GE:
@@ -233,7 +288,17 @@ public class PrintSCS3270 {
                     // Standard printable character
                     if (presentationEnabled) {
                         char ch = translator.ebcdicToUnicode(b);
-                        printCharacter(ch);
+                        if (ch == 0 || ch == '\uFFFD') {
+                            int gea = config.getGraphicErrorAction();
+                            if (gea == PrinterConstants.GEA_SUBSTITUTE_SPECIFIED) {
+                                ch = config.getGraphicErrorReplacementChar();
+                                printCharacter(ch);
+                            } else if (gea != PrinterConstants.GEA_INHIBIT_INVALID) {
+                                printCharacter(ch != 0 ? ch : '?');
+                            }
+                        } else {
+                            printCharacter(ch);
+                        }
                     }
                     idx++;
                     break;
@@ -293,10 +358,22 @@ public class PrintSCS3270 {
     // ========== SCS Order Implementations ==========
 
     public synchronized void carriageReturn() {
+        processCR();
+    }
+
+    public synchronized void processCR() {
         currentCol = leftMargin;
     }
 
+    public synchronized void processRCR() {
+        processCR();
+    }
+
     public synchronized void lineFeed() {
+        processLF();
+    }
+
+    public synchronized void processLF() {
         flushLineBuffer();
         currentRow++;
         if (currentRow > bottomMargin || currentRow > mpl) {
@@ -305,11 +382,23 @@ public class PrintSCS3270 {
     }
 
     public synchronized void newLine() {
-        carriageReturn();
+        processNL();
-        lineFeed();
+    }
+
+    public synchronized void processNL() {
+        processCR();
+        processLF();
+    }
+
+    public synchronized void processRNL() {
+        processNL();
     }
 
     public synchronized void formFeed() {
+        processFF();
+    }
+
+    public synchronized void processFF() {
         flushLineBuffer();
         pd.formFeed();
         currentRow = topMargin;
@@ -317,18 +406,139 @@ public class PrintSCS3270 {
     }
 
     public synchronized void backspace() {
+        processBS();
+    }
+
+    public synchronized void processBS() {
         if (currentCol > leftMargin) {
             currentCol -= (doubleWidth ? 2 : 1);
             if (currentCol < leftMargin) currentCol = leftMargin;
         }
     }
 
+    public synchronized void processNBS() {
+        processBS();
+    }
+
+    public synchronized void processIRS() {
+        // SCS Index Return (0x33): Advance one line down and return to left margin
+        processNL();
+    }
+
+    public synchronized void processVCS(int channel) {
+        int targetLine = config.getChannelLine(channel);
+        if (targetLine > 0) {
+            if (targetLine < currentRow) {
+                processFF();
+            }
+            while (currentRow < targetLine && currentRow < bottomMargin) {
+                processLF();
+            }
+        }
+    }
+
+    public synchronized void processTRN(byte[] rawBytes) {
+        if (rawBytes != null && rawBytes.length > 0) {
+            processTRN(rawBytes, 0, rawBytes.length);
+        }
+    }
+
+    public synchronized void processTRN(byte[] data, int offset, int len) {
+        if (data != null && len > 0) {
+            pd.writePrintBytes(data, offset, len);
+        }
+    }
+
+    public synchronized void processTransparentStream(byte[] data, int offset, int len) {
+        processTRN(data, offset, len);
+    }
+
+    public synchronized void processGEA(int action) {
+        this.config.setGraphicErrorAction(action);
+    }
+
+    public synchronized void processGEA(int action, int replacementChar) {
+        this.config.setGraphicErrorAction(action);
+        if (replacementChar > 0) {
+            this.config.setGraphicErrorReplacementChar((char) replacementChar);
+        }
+    }
+
+    public synchronized void processSO() {
+        // Shift-Out (DBCS mode toggle)
+    }
+
+    public synchronized void processSI() {
+        // Shift-In (SBCS mode toggle)
+    }
+
+    public synchronized void processENP() {
+        presentationEnabled = true;
+    }
+
+    public synchronized void processINP() {
+        presentationEnabled = false;
+    }
+
+    public synchronized void processBEL() {
+        log.fine("SCS BEL (Sound Alarm)");
+    }
+
+    public synchronized void processSUB() {
+        int gea = config.getGraphicErrorAction();
+        if (gea == PrinterConstants.GEA_SUBSTITUTE_SPECIFIED) {
+            printCharacter(config.getGraphicErrorReplacementChar());
+        } else if (gea != PrinterConstants.GEA_INHIBIT_INVALID) {
+            printCharacter('?');
+        }
+    }
+
+    public synchronized void processPOC(byte[] msg) {
+        log.fine("SCS Program Operator Communication");
+    }
+
+    public synchronized void processSCS(int charset) {
+        log.fine("SCS Select Character Set: " + charset);
+    }
+
+    public synchronized void processHT() {
+        processHorizontalTab();
+    }
+
+    public synchronized void processVT() {
+        processVerticalTab();
+    }
+
+    public synchronized void processPP(byte[] data, int offset, int len) {
+        processPresentationPositionAdvancing(data, offset, len);
+    }
+
+    public synchronized void processSHF(byte[] data, int offset, int len) {
+        processSetHorizontalFormat(data, offset, len);
+    }
+
+    public synchronized void processSVF(byte[] data, int offset, int len) {
+        processSetVerticalFormat(data, offset, len);
+    }
+
+    public synchronized void processSLD(byte[] data, int offset, int len) {
+        processSetLineDensity(data, offset, len);
+    }
+
+    public synchronized void processSTO(byte[] data, int offset, int len) {
+        processSetTextOrientation(data, offset, len);
+    }
+
+    public synchronized void processSA(byte[] data, int offset, int len) {
+        processSetAttribute(data, offset, len);
+    }
+
     public synchronized void advanceToNextLine() {
-        newLine();
+        processNL();
     }
 
     public synchronized void advanceToNextPage() {
-        formFeed();
+        processFF();
     }
 
     // ========== Tab Stops and Calculations ==========
@@ -370,7 +580,7 @@ public class PrintSCS3270 {
         int nextTab = calculateVerticalTab(currentRow);
         if (nextTab > 0 && nextTab <= bottomMargin) {
             while (currentRow < nextTab) {
-                lineFeed();
+                processLF();
             }
         } else {
             advanceToNextPage();
@@ -414,20 +624,59 @@ public class PrintSCS3270 {
     }
 
     public synchronized void setPrintDensity(int cpi, int lpi) {
-        if (cpi > 0) this.cpi = cpi;
+        if (cpi > 0) {
-        if (lpi > 0) this.lpi = lpi;
+            this.cpi = cpi;
+            if (pd != null) pd.setCPI(cpi);
+        }
+        if (lpi > 0) {
+            this.lpi = lpi;
+            if (pd != null) pd.setLPI(lpi);
+        }
     }
 
     public synchronized void setEnhancedHighlight(int highlightType) {
         this.activeHighlight = highlightType;
+        if (pd != null) {
+            switch (highlightType) {
+                case PrinterConstants.SEAC_EMPHASIZED:
+                    pd.setBold(true);
+                    break;
+                case PrinterConstants.SEAC_ITALIC:
+                    pd.setItalic(true);
+                    break;
+                case PrinterConstants.SEAC_UNDERLINE:
+                    pd.setUnderline(true);
+                    break;
+                case PrinterConstants.SEAC_DOUBLE_STRIKE:
+                    pd.setDoubleStrike(true);
+                    break;
+                case PrinterConstants.SEAC_SUPERSCRIPT:
+                    pd.setSuperscript(true);
+                    break;
+                case PrinterConstants.SEAC_SUBSCRIPT:
+                    pd.setSubscript(true);
+                    break;
+                case PrinterConstants.SEAC_DEFAULT:
+                default:
+                    pd.setBold(false);
+                    pd.setItalic(false);
+                    pd.setUnderline(false);
+                    pd.setDoubleStrike(false);
+                    pd.setSubscript(false);
+                    pd.setSuperscript(false);
+                    break;
+            }
+        }
     }
 
     public synchronized void startDoubleWidthCharacters() {
         this.doubleWidth = true;
+        if (pd != null) pd.setDoubleWidth(true);
     }
 
     public synchronized void endDoubleWidthCharacters() {
         this.doubleWidth = false;
+        if (pd != null) pd.setDoubleWidth(false);
     }
 
     public synchronized void processSetHorizontalFormat(byte[] data, int offset, int len) {
@@ -484,7 +733,8 @@ public class PrintSCS3270 {
         if (points > 0) {
             // Line density in points / inch (72 points = 1 inch)
             // 12 points = 6 LPI, 9 points = 8 LPI, 18 points = 4 LPI
-            this.lpi = Math.max(1, 72 / points);
+            int computedLpi = Math.max(1, 72 / points);
+            setPrintDensity(this.cpi, computedLpi);
         }
     }
 
@@ -494,6 +744,21 @@ public class PrintSCS3270 {
         }
     }
 
+    public synchronized void processSelectCharacterSet(byte[] data, int offset, int len) {
+        if (len >= 4) {
+            int cs = data[offset + 3] & 0xFF;
+            processSCS(cs);
+        }
+    }
+
+    public synchronized void processSetGraphicErrorAction(byte[] data, int offset, int len) {
+        if (len >= 4) {
+            int action = data[offset + 3] & 0xFF;
+            int repChar = (len >= 5) ? (data[offset + 4] & 0xFF) : 0;
+            processGEA(action, repChar);
+        }
+    }
+
     public synchronized void processSetEnhancedAttribute(byte[] data, int offset, int len) {
         if (len >= 5) {
             int attrVal = data[offset + 4] & 0xFF;
@@ -520,11 +785,11 @@ public class PrintSCS3270 {
 
         if (subfn == PrinterConstants.POS_ABSOLUTE) {
             while (currentRow < val && currentRow < bottomMargin) {
-                lineFeed();
+                processLF();
             }
         } else if (subfn == PrinterConstants.POS_RELATIVE) {
             for (int i = 0; i < val && currentRow < bottomMargin; i++) {
-                lineFeed();
+                processLF();
             }
         }
     }
@@ -536,19 +801,23 @@ public class PrintSCS3270 {
 
         if (attrType == PrinterConstants.SA_COLOR) {
             this.activeColor = attrVal;
-        } else if (attrType == PrinterConstants.SA_HILITE) {
+        } else if (attrType == PrinterConstants.SA_HILITE || attrType == PrinterConstants.SA_EXT_HILITE) {
-            this.activeHighlight = attrVal;
+            setEnhancedHighlight(attrVal);
+        } else if (attrType == PrinterConstants.SA_CHARSET) {
+            processSCS(attrVal);
         } else if (attrType == PrinterConstants.SA_RESET) {
             this.activeColor = 0;
-            this.activeHighlight = PrinterConstants.SEAC_DEFAULT;
+            setEnhancedHighlight(PrinterConstants.SEAC_DEFAULT);
-            this.doubleWidth = false;
+            endDoubleWidthCharacters();
         }
     }
 
-    public synchronized void processTransparentStream(byte[] data, int offset, int len) {
+    public int getChannelLine(int channel) {
-        if (len > 0) {
+        return config.getChannelLine(channel);
-            pd.writePrintBytes(data, offset, len);
+    }
-        }
+
+    public void setChannelLine(int channel, int line) {
+        config.setChannelLine(channel, line);
     }
 
     // ========== Accessors ==========
@@ -571,13 +840,16 @@ public class PrintSCS3270 {
     public int getCharsPerInch() { return cpi; }
 
     public boolean isDoubleWidth() { return doubleWidth; }
-    public void setDoubleWidth(boolean dw) { this.doubleWidth = dw; }
+    public void setDoubleWidth(boolean dw) {
+        if (dw) startDoubleWidthCharacters();
+        else endDoubleWidthCharacters();
+    }
 
     public int getActiveColor() { return activeColor; }
     public void setActiveColor(int color) { this.activeColor = color; }
 
     public int getActiveHighlight() { return activeHighlight; }
-    public void setActiveHighlight(int hilite) { this.activeHighlight = hilite; }
+    public void setActiveHighlight(int hilite) { setEnhancedHighlight(hilite); }
 
     public int getTextOrientation() { return textOrientation; }
 

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PrinterConfig.java

@@ -48,26 +48,44 @@ public class PrinterConfig {
     private boolean autoFlushOnEoj = true;
     private boolean autoReconnect = false;
 
-    public PrinterConfig() {}
+    // Phase 7 Enhancements: PDT, Auto-Flush Timer, Channel Tapes, GEA
+    private PrinterDefinitionTable printerDefinitionTable = PrinterDefinitionTable.createPlainTextPDT();
+    private final int[] channelTable = new int[13]; // 1-based index (channels 1..12)
+    private long autoFlushTimeoutMs = 2000;
+    private int graphicErrorAction = PrinterConstants.GEA_NO_SUBSTITUTION;
+    private char graphicErrorReplacementChar = '?';
+
+    public PrinterConfig() {
+        initDefaultChannelTable();
+    }
 
     public PrinterConfig(String host, int port) {
+        this();
         this.host = host;
         this.port = port;
     }
 
     public PrinterConfig(String host, int port, String printerLuName) {
-        this.host = host;
+        this(host, port);
-        this.port = port;
         this.printerLuName = printerLuName;
     }
 
     public PrinterConfig(String host, int port, String printerLuName, boolean useTls) {
-        this.host = host;
+        this(host, port, printerLuName);
-        this.port = port;
-        this.printerLuName = printerLuName;
         this.useTls = useTls;
     }
 
+    private void initDefaultChannelTable() {
+        // Standard 12-channel carriage tape default distribution
+        // Channel 1 = Top Margin (1), Channel 12 = Bottom Margin (66)
+        channelTable[1] = 1;
+        int step = Math.max(1, (mpl - topMargin) / 11);
+        for (int c = 2; c <= 11; c++) {
+            channelTable[c] = Math.min(mpl, topMargin + (c - 1) * step);
+        }
+        channelTable[12] = mpl;
+    }
+
     // Getters and Setters
     public String getHost() { return host; }
     public void setHost(String host) { this.host = host; }
@@ -125,6 +143,7 @@ public class PrinterConfig {
     public void setMpl(int mpl) {
         this.mpl = mpl > 0 ? mpl : PrinterConstants.DEFAULT_MPL;
         if (this.bottomMargin > this.mpl) this.bottomMargin = this.mpl;
+        initDefaultChannelTable();
     }
 
     public int getLeftMargin() { return leftMargin; }
@@ -159,4 +178,53 @@ public class PrinterConfig {
 
     public boolean isAutoReconnect() { return autoReconnect; }
     public void setAutoReconnect(boolean autoReconnect) { this.autoReconnect = autoReconnect; }
+
+    public PrinterDefinitionTable getPrinterDefinitionTable() {
+        return printerDefinitionTable;
+    }
+
+    public void setPrinterDefinitionTable(PrinterDefinitionTable printerDefinitionTable) {
+        this.printerDefinitionTable = printerDefinitionTable != null ? printerDefinitionTable : PrinterDefinitionTable.createPlainTextPDT();
+    }
+
+    public long getAutoFlushTimeoutMs() {
+        return autoFlushTimeoutMs;
+    }
+
+    public void setAutoFlushTimeoutMs(long autoFlushTimeoutMs) {
+        this.autoFlushTimeoutMs = autoFlushTimeoutMs;
+    }
+
+    public int getGraphicErrorAction() {
+        return graphicErrorAction;
+    }
+
+    public void setGraphicErrorAction(int graphicErrorAction) {
+        this.graphicErrorAction = graphicErrorAction;
+    }
+
+    public char getGraphicErrorReplacementChar() {
+        return graphicErrorReplacementChar;
+    }
+
+    public void setGraphicErrorReplacementChar(char graphicErrorReplacementChar) {
+        this.graphicErrorReplacementChar = graphicErrorReplacementChar;
+    }
+
+    public int getChannelLine(int channel) {
+        if (channel >= 1 && channel <= 12) {
+            return channelTable[channel];
+        }
+        return 1;
+    }
+
+    public void setChannelLine(int channel, int line) {
+        if (channel >= 1 && channel <= 12) {
+            channelTable[channel] = Math.max(1, Math.min(mpl, line));
+        }
+    }
+
+    public int[] getChannelTable() {
+        return channelTable.clone();
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PrinterConstants.java

@@ -22,13 +22,18 @@ public final class PrinterConstants {
 
     // ========== SCS Single-Byte Control Codes (EBCDIC) ==========
     public static final int SCS_NUL  = 0x00; // Null
+    public static final int SCS_NOP  = 0x03; // No Operation / NB
+    public static final int SCS_VCS  = 0x04; // Vertical Channel Select (0x04 <chan>)
     public static final int SCS_HT   = 0x05; // Horizontal Tab
     public static final int SCS_RNLS = 0x06; // Required New Line
+    public static final int SCS_RNL  = 0x06; // Required New Line alias
     public static final int SCS_RCR  = 0x07; // Required Carriage Return
     public static final int SCS_GE   = 0x08; // Graphic Escape
     public static final int SCS_VT   = 0x0B; // Vertical Tab
     public static final int SCS_FF   = 0x0C; // Form Feed
     public static final int SCS_CR   = 0x0D; // Carriage Return
+    public static final int SCS_SO   = 0x0E; // Shift Out (DBCS mode)
+    public static final int SCS_SI   = 0x0F; // Shift In (SBCS mode)
     public static final int SCS_ENP  = 0x14; // Enable Presentation
     public static final int SCS_NL   = 0x15; // New Line
     public static final int SCS_BS   = 0x16; // Backspace
@@ -36,8 +41,11 @@ public final class PrinterConstants {
     public static final int SCS_INP  = 0x24; // Inhibit Presentation
     public static final int SCS_LF   = 0x25; // Line Feed
     public static final int SCS_BEL  = 0x2F; // Bell / Sound Alarm
-    public static final int SCS_TRS  = 0x35; // Transparent Stream (0x35 <len> <bytes>)
+    public static final int SCS_IRS  = 0x33; // Index Return
+    public static final int SCS_TRN  = 0x35; // Transparent Stream (0x35 <len> <bytes>)
+    public static final int SCS_TRS  = 0x35; // Transparent Stream alias
     public static final int SCS_NBS  = 0x36; // Numeric Backspace
+    public static final int SCS_SUB  = 0x3F; // Substitute Character
     public static final int SCS_SP   = 0x40; // Space
     public static final int SCS_RSP  = 0x41; // Required Space
 
@@ -46,26 +54,39 @@ public final class PrinterConstants {
     public static final int SCS_SA        = 0x28; // Set Attribute (0x28 <type> <val>)
 
     // 0x2B Sub-orders
+    public static final int SCS_PPV  = 0xC4; // Presentation Position Vertical
+    public static final int SCS_PPA  = 0xC6; // Presentation Position Advancing (Horizontal)
+    public static final int SCS_GEA  = 0xC8; // Set Graphic Error Action (0x2B 0xC8)
     public static final int SCS_SHF  = 0xD1; // Set Horizontal Format
     public static final int SCS_SVF  = 0xD2; // Set Vertical Format
     public static final int SCS_STO  = 0xD3; // Set Text Orientation
     public static final int SCS_SCS  = 0xD4; // Select Character Set
     public static final int SCS_SEAC = 0xD5; // Set Enhanced Attribute / Highlight
     public static final int SCS_SLD  = 0xD6; // Set Line Density
-    public static final int SCS_PPV  = 0xC4; // Presentation Position Vertical
-    public static final int SCS_PPA  = 0xC6; // Presentation Position Advancing (Horizontal)
 
     // SA Attribute Types
     public static final int SA_RESET   = 0x00;
     public static final int SA_HILITE  = 0x41;
     public static final int SA_COLOR   = 0x42;
     public static final int SA_CHARSET = 0x43;
+    public static final int SA_EXT_HILITE = 0x45;
 
-    // SEAC Highlight Values
+    // SEAC / Extended Highlight Values
-    public static final int SEAC_DEFAULT   = 0x00;
+    public static final int SEAC_DEFAULT       = 0x00;
-    public static final int SEAC_BLINK     = 0xF1;
+    public static final int SEAC_NORMAL        = 0x00;
-    public static final int SEAC_REVERSE   = 0xF2;
+    public static final int SEAC_BLINK         = 0xF1;
-    public static final int SEAC_UNDERLINE = 0xF4;
+    public static final int SEAC_REVERSE       = 0xF2;
+    public static final int SEAC_UNDERLINE     = 0xF4;
+    public static final int SEAC_ITALIC        = 0xF8;
+    public static final int SEAC_EMPHASIZED    = 0xF9; // Bold / Emphasized
+    public static final int SEAC_DOUBLE_STRIKE = 0xFA;
+    public static final int SEAC_SUPERSCRIPT   = 0xFB;
+    public static final int SEAC_SUBSCRIPT     = 0xFC;
+
+    // Set Graphic Error Action (GEA) Constants
+    public static final int GEA_NO_SUBSTITUTION    = 0x00; // Stop on error or use default
+    public static final int GEA_SUBSTITUTE_SPECIFIED = 0x01; // Substitute specified character
+    public static final int GEA_INHIBIT_INVALID    = 0x02; // Inhibit printing invalid character
 
     // PPA/PPV Positioning Types
     public static final int POS_ABSOLUTE = 0x01; // Absolute position (1-based)

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/PrinterDefinitionTable.java

@@ -0,0 +1,237 @@
+package haus.nightmare.lib3270j.printer;
+
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Printer Definition Table (PDT) Processor.
+ * Conforms to IBM Host On-Demand v14 (com.ibm.eNetwork.ECL.tn3270p.PD3270 PDT architecture).
+ * 
+ * Provides translation of SCS / LU3 formatting and character commands into target
+ * printer control codes (e.g. PCL5, Epson ESC/P, PostScript, or Plain Text).
+ */
+public class PrinterDefinitionTable {
+
+    // Control sequence keys
+    public static final String CMD_START_JOB           = "START_JOB";
+    public static final String CMD_END_JOB             = "END_JOB";
+    public static final String CMD_PAGE_FEED           = "PAGE_FEED";
+    public static final String CMD_CARRIAGE_RETURN     = "CARRIAGE_RETURN";
+    public static final String CMD_LINE_FEED           = "LINE_FEED";
+    public static final String CMD_NEW_LINE            = "NEW_LINE";
+    public static final String CMD_RESET               = "RESET";
+
+    // Highlights
+    public static final String CMD_START_BOLD          = "START_BOLD";
+    public static final String CMD_END_BOLD            = "END_BOLD";
+    public static final String CMD_START_UNDERLINE     = "START_UNDERLINE";
+    public static final String CMD_END_UNDERLINE       = "END_UNDERLINE";
+    public static final String CMD_START_ITALIC        = "START_ITALIC";
+    public static final String CMD_END_ITALIC          = "END_ITALIC";
+    public static final String CMD_START_DOUBLE_STRIKE = "START_DOUBLE_STRIKE";
+    public static final String CMD_END_DOUBLE_STRIKE   = "END_DOUBLE_STRIKE";
+    public static final String CMD_START_DOUBLE_WIDTH  = "START_DOUBLE_WIDTH";
+    public static final String CMD_END_DOUBLE_WIDTH    = "END_DOUBLE_WIDTH";
+    public static final String CMD_START_SUBSCRIPT     = "START_SUBSCRIPT";
+    public static final String CMD_END_SUBSCRIPT       = "END_SUBSCRIPT";
+    public static final String CMD_START_SUPERSCRIPT   = "START_SUPERSCRIPT";
+    public static final String CMD_END_SUPERSCRIPT     = "END_SUPERSCRIPT";
+
+    // Densities
+    public static final String CMD_SET_CPI_10          = "SET_CPI_10";
+    public static final String CMD_SET_CPI_12          = "SET_CPI_12";
+    public static final String CMD_SET_CPI_15          = "SET_CPI_15";
+    public static final String CMD_SET_CPI_17          = "SET_CPI_17";
+    public static final String CMD_SET_LPI_6           = "SET_LPI_6";
+    public static final String CMD_SET_LPI_8           = "SET_LPI_8";
+
+    // Colors
+    public static final String CMD_COLOR_BLACK         = "COLOR_BLACK";
+    public static final String CMD_COLOR_BLUE          = "COLOR_BLUE";
+    public static final String CMD_COLOR_RED           = "COLOR_RED";
+    public static final String CMD_COLOR_PINK          = "COLOR_PINK";
+    public static final String CMD_COLOR_GREEN         = "COLOR_GREEN";
+    public static final String CMD_COLOR_TURQUOISE     = "COLOR_TURQUOISE";
+    public static final String CMD_COLOR_YELLOW        = "COLOR_YELLOW";
+    public static final String CMD_COLOR_WHITE         = "COLOR_WHITE";
+
+    private final String name;
+    private final String description;
+    private final Map<String, byte[]> controlCodes = new HashMap<>();
+    private final Map<Character, byte[]> charOverrides = new HashMap<>();
+    private Charset defaultCharset = StandardCharsets.UTF_8;
+
+    public PrinterDefinitionTable(String name, String description) {
+        this.name = name != null ? name : "GENERIC_TEXT";
+        this.description = description != null ? description : "Generic Plain Text Printer Table";
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public Charset getDefaultCharset() {
+        return defaultCharset;
+    }
+
+    public void setDefaultCharset(Charset defaultCharset) {
+        if (defaultCharset != null) {
+            this.defaultCharset = defaultCharset;
+        }
+    }
+
+    public void setControlCode(String commandName, byte[] sequence) {
+        if (commandName != null && sequence != null) {
+            controlCodes.put(commandName, sequence.clone());
+        }
+    }
+
+    public void setControlCode(String commandName, String escapeSequence) {
+        if (commandName != null && escapeSequence != null) {
+            controlCodes.put(commandName, escapeSequence.getBytes(StandardCharsets.ISO_8859_1));
+        }
+    }
+
+    public byte[] getControlCode(String commandName) {
+        return controlCodes.get(commandName);
+    }
+
+    public boolean hasControlCode(String commandName) {
+        return controlCodes.containsKey(commandName);
+    }
+
+    public void setCharOverride(char c, byte[] sequence) {
+        if (sequence != null) {
+            charOverrides.put(c, sequence.clone());
+        }
+    }
+
+    public byte[] getCharOverride(char c) {
+        return charOverrides.get(c);
+    }
+
+    public byte[] translateChar(char c) {
+        byte[] override = charOverrides.get(c);
+        if (override != null) {
+            return override;
+        }
+        return String.valueOf(c).getBytes(defaultCharset);
+    }
+
+    // ==========================================
+    // Built-in Factory Presets
+    // ==========================================
+
+    /**
+     * Plain Text / Generic ASCII output definition.
+     */
+    public static PrinterDefinitionTable createPlainTextPDT() {
+        PrinterDefinitionTable pdt = new PrinterDefinitionTable("PLAIN_TEXT", "Standard ASCII / Plain Text");
+        pdt.setControlCode(CMD_PAGE_FEED, "\f");
+        pdt.setControlCode(CMD_CARRIAGE_RETURN, "\r");
+        pdt.setControlCode(CMD_LINE_FEED, "\n");
+        pdt.setControlCode(CMD_NEW_LINE, "\r\n");
+        return pdt;
+    }
+
+    /**
+     * HP PCL 5 / PCL 6 Printer Definition Table.
+     */
+    public static PrinterDefinitionTable createPcl5PDT() {
+        PrinterDefinitionTable pdt = new PrinterDefinitionTable("PCL_5", "Hewlett-Packard PCL 5 / PCL 6");
+        pdt.setDefaultCharset(StandardCharsets.ISO_8859_1);
+
+        // Control codes (ESC is \033)
+        pdt.setControlCode(CMD_START_JOB, "\033E");             // Reset / Initialize
+        pdt.setControlCode(CMD_END_JOB, "\033E");               // Reset
+        pdt.setControlCode(CMD_RESET, "\033E");
+        pdt.setControlCode(CMD_PAGE_FEED, "\f");
+        pdt.setControlCode(CMD_CARRIAGE_RETURN, "\r");
+        pdt.setControlCode(CMD_LINE_FEED, "\n");
+        pdt.setControlCode(CMD_NEW_LINE, "\r\n");
+
+        // Highlights
+        pdt.setControlCode(CMD_START_BOLD, "\033(s3B");         // Bold
+        pdt.setControlCode(CMD_END_BOLD, "\033(s0B");           // Normal stroke weight
+        pdt.setControlCode(CMD_START_UNDERLINE, "\033&d0D");    // Underline
+        pdt.setControlCode(CMD_END_UNDERLINE, "\033&d@");       // Underline off
+        pdt.setControlCode(CMD_START_ITALIC, "\033(s1S");       // Italic posture
+        pdt.setControlCode(CMD_END_ITALIC, "\033(s0S");         // Upright posture
+        pdt.setControlCode(CMD_START_DOUBLE_STRIKE, "\033(s3B");
+        pdt.setControlCode(CMD_END_DOUBLE_STRIKE, "\033(s0B");
+        pdt.setControlCode(CMD_START_DOUBLE_WIDTH, "\033(s0S\033&k1W");
+        pdt.setControlCode(CMD_END_DOUBLE_WIDTH, "\033&k0W");
+
+        // Pitch & Spacing
+        pdt.setControlCode(CMD_SET_CPI_10, "\033&k0S\033(s10H"); // 10 CPI
+        pdt.setControlCode(CMD_SET_CPI_12, "\033&k2S\033(s12H"); // 12 CPI
+        pdt.setControlCode(CMD_SET_CPI_15, "\033(s15H");         // 15 CPI
+        pdt.setControlCode(CMD_SET_CPI_17, "\033(s17.14H");      // 17 CPI
+        pdt.setControlCode(CMD_SET_LPI_6, "\033&l6D");           // 6 LPI
+        pdt.setControlCode(CMD_SET_LPI_8, "\033&l8D");           // 8 LPI
+
+        return pdt;
+    }
+
+    /**
+     * Epson ESC/P and ESC/P 2 Printer Definition Table.
+     */
+    public static PrinterDefinitionTable createEpsonEscPPDT() {
+        PrinterDefinitionTable pdt = new PrinterDefinitionTable("EPSON_ESC_P", "Epson ESC/P & ESC/P 2");
+        pdt.setDefaultCharset(StandardCharsets.ISO_8859_1);
+
+        pdt.setControlCode(CMD_START_JOB, "\033@");             // ESC @ Initialize
+        pdt.setControlCode(CMD_END_JOB, "\033@");
+        pdt.setControlCode(CMD_RESET, "\033@");
+        pdt.setControlCode(CMD_PAGE_FEED, "\f");
+        pdt.setControlCode(CMD_CARRIAGE_RETURN, "\r");
+        pdt.setControlCode(CMD_LINE_FEED, "\n");
+        pdt.setControlCode(CMD_NEW_LINE, "\r\n");
+
+        // Highlights
+        pdt.setControlCode(CMD_START_BOLD, "\033E");            // ESC E (Emphasized/Bold on)
+        pdt.setControlCode(CMD_END_BOLD, "\033F");              // ESC F (Emphasized/Bold off)
+        pdt.setControlCode(CMD_START_UNDERLINE, "\033-1");      // ESC - 1 (Underline on)
+        pdt.setControlCode(CMD_END_UNDERLINE, "\033-0");        // ESC - 0 (Underline off)
+        pdt.setControlCode(CMD_START_ITALIC, "\0334");          // ESC 4 (Italic on)
+        pdt.setControlCode(CMD_END_ITALIC, "\0335");            // ESC 5 (Italic off)
+        pdt.setControlCode(CMD_START_DOUBLE_STRIKE, "\033G");   // ESC G (Double-strike on)
+        pdt.setControlCode(CMD_END_DOUBLE_STRIKE, "\033H");     // ESC H (Double-strike off)
+        pdt.setControlCode(CMD_START_DOUBLE_WIDTH, "\033W1");   // ESC W 1
+        pdt.setControlCode(CMD_END_DOUBLE_WIDTH, "\033W0");     // ESC W 0
+        pdt.setControlCode(CMD_START_SUPERSCRIPT, "\033S0");    // ESC S 0
+        pdt.setControlCode(CMD_END_SUPERSCRIPT, "\033T");       // ESC T
+        pdt.setControlCode(CMD_START_SUBSCRIPT, "\033S1");      // ESC S 1
+        pdt.setControlCode(CMD_END_SUBSCRIPT, "\033T");         // ESC T
+
+        // Pitch & Spacing
+        pdt.setControlCode(CMD_SET_CPI_10, "\033P");            // 10 CPI (Pica)
+        pdt.setControlCode(CMD_SET_CPI_12, "\033M");            // 12 CPI (Elite)
+        pdt.setControlCode(CMD_SET_CPI_15, "\033g");            // 15 CPI
+        pdt.setControlCode(CMD_SET_LPI_6, "\0332");             // 6 LPI (1/6 inch)
+        pdt.setControlCode(CMD_SET_LPI_8, "\0330");             // 8 LPI (1/8 inch)
+
+        return pdt;
+    }
+
+    /**
+     * Adobe PostScript Level 2/3 Printer Definition Table.
+     */
+    public static PrinterDefinitionTable createPostScriptPDT() {
+        PrinterDefinitionTable pdt = new PrinterDefinitionTable("POSTSCRIPT", "Adobe PostScript Level 2/3");
+        pdt.setControlCode(CMD_START_JOB, "%!PS-Adobe-3.0\n/Courier findfont 10 scalefont setfont\n");
+        pdt.setControlCode(CMD_END_JOB, "showpage\n%%EOF\n");
+        pdt.setControlCode(CMD_PAGE_FEED, "showpage\n");
+        pdt.setControlCode(CMD_START_BOLD, "/Courier-Bold findfont 10 scalefont setfont\n");
+        pdt.setControlCode(CMD_END_BOLD, "/Courier findfont 10 scalefont setfont\n");
+        pdt.setControlCode(CMD_START_ITALIC, "/Courier-Oblique findfont 10 scalefont setfont\n");
+        pdt.setControlCode(CMD_END_ITALIC, "/Courier findfont 10 scalefont setfont\n");
+        return pdt;
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/Telnet3270EP.java

@@ -166,6 +166,10 @@ public class Telnet3270EP implements Runnable {
             readerThread = null;
         }
 
+        if (printPs != null) {
+            printPs.cancelAutoFlush();
+        }
+
         pd.closePrinter();
         updateStatus(PrinterConstants.STATUS_DISCONNECTED, "Disconnected");
     }
@@ -260,11 +264,17 @@ public class Telnet3270EP implements Runnable {
      */
     public synchronized void sendEOJ(boolean isComplete) {
         log.info("Received End-Of-Job (EOJ), isComplete=" + isComplete);
-        if (config.isFormFeedAtEoj()) {
+        if (activeLuType == PrinterConstants.LU_TYPE_3_DS) {
-            pd.formFeed();
+            printPs.processPrintComplete();
-        }
+        } else {
-        if (config.isAutoFlushOnEoj()) {
+            scs.flushLineBuffer();
-            pd.flush();
+            if (config.isFormFeedAtEoj()) {
+                pd.formFeed();
+            }
+            if (config.isAutoFlushOnEoj()) {
+                pd.flush();
+            }
+            pd.endJob();
         }
 
         firePrintJobComplete(pd.getPageCount(), pd.getByteCount());

lib3270j/src/main/java/haus/nightmare/lib3270j/printer/Telnet3270EPClient.java

@@ -98,4 +98,34 @@ public class Telnet3270EPClient {
             }
         }
     }
+
+    public PrinterDefinitionTable getPDT() {
+        return protocolEngine.getPD().getPDT();
+    }
+
+    public void setPDT(PrinterDefinitionTable pdt) {
+        protocolEngine.getConfig().setPrinterDefinitionTable(pdt);
+        protocolEngine.getPD().setPDT(pdt);
+    }
+
+    public void flush() {
+        if (protocolEngine.getActiveLuType() == PrinterConstants.LU_TYPE_3_DS) {
+            protocolEngine.getPrintPS().flushPrintBuffer();
+        } else {
+            protocolEngine.getSCS().flushLineBuffer();
+        }
+        protocolEngine.getPD().flush();
+    }
+
+    public void sendEOJ(boolean isComplete) {
+        protocolEngine.sendEOJ(isComplete);
+    }
+
+    public int getChannelLine(int channel) {
+        return protocolEngine.getConfig().getChannelLine(channel);
+    }
+
+    public void setChannelLine(int channel, int line) {
+        protocolEngine.getConfig().setChannelLine(channel, line);
+    }
 }

lib3270j/src/test/java/haus/nightmare/lib3270j/charset/APLTranslationPhase8Test.java

@@ -0,0 +1,105 @@
+package haus.nightmare.lib3270j.charset;
+
+import haus.nightmare.lib3270j.TerminalModel;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for Phase 8 IBM 3270 APL / Graphic Escape (GA23-0059) character set translation.
+ */
+public class APLTranslationPhase8Test {
+
+    @Test
+    public void testAPLBoxDrawingGlyphs() {
+        EbcdicTranslator translator = new EbcdicTranslator();
+
+        // Box lines and corners
+        assertEquals('─', translator.mapAPL(0xA2)); // Horizontal line
+        assertEquals('│', translator.mapAPL(0x85)); // Vertical line
+        assertEquals('┌', translator.mapAPL(0xC5)); // Top Left corner
+        assertEquals('┐', translator.mapAPL(0xD5)); // Top Right corner
+        assertEquals('└', translator.mapAPL(0xC4)); // Bottom Left corner
+        assertEquals('┘', translator.mapAPL(0xD4)); // Bottom Right corner
+        assertEquals('├', translator.mapAPL(0xC6)); // Left T
+        assertEquals('┤', translator.mapAPL(0xD6)); // Right T
+        assertEquals('┬', translator.mapAPL(0xC7)); // Top T
+        assertEquals('┴', translator.mapAPL(0xD7)); // Bottom T
+        assertEquals('┼', translator.mapAPL(0xCB)); // Cross
+    }
+
+    @Test
+    public void testAPLMathAndSpecialSymbols() {
+        EbcdicTranslator translator = new EbcdicTranslator();
+
+        assertEquals('≤', translator.mapAPL(0x8C)); // Less than or equal
+        assertEquals('≥', translator.mapAPL(0xAE)); // Greater than or equal
+        assertEquals('≠', translator.mapAPL(0xBE)); // Not equal
+        assertEquals('[', translator.mapAPL(0xAD)); // Left bracket
+        assertEquals(']', translator.mapAPL(0xBD)); // Right bracket
+        assertEquals('{', translator.mapAPL(0x8D)); // Left brace
+        assertEquals('}', translator.mapAPL(0x9D)); // Right brace
+        assertEquals('°', translator.mapAPL(0xB0)); // Degree
+        assertEquals('±', translator.mapAPL(0xB1)); // Plus-minus
+        assertEquals('²', translator.mapAPL(0xB2)); // Superscript 2
+        assertEquals('³', translator.mapAPL(0xB3)); // Superscript 3
+        assertEquals('¯', translator.mapAPL(0xAF)); // Overbar / High Minus
+        assertEquals('Ω', translator.mapAPL(0xBA)); // Greek Omega
+        assertEquals('µ', translator.mapAPL(0xBF)); // Micro
+        assertEquals('¬', translator.mapAPL(0x5F)); // Not sign
+    }
+
+    @Test
+    public void testAPLOperatorsAndStructureGlyphs() {
+        EbcdicTranslator translator = new EbcdicTranslator();
+
+        assertEquals('⋄', translator.mapAPL(0x80)); // Diamond
+        assertEquals('⍺', translator.mapAPL(0x81)); // Alpha
+        assertEquals('⊥', translator.mapAPL(0x82)); // Up tack / decode
+        assertEquals('∩', translator.mapAPL(0x83)); // Intersection
+        assertEquals('⌊', translator.mapAPL(0x84)); // Floor
+        assertEquals('∇', translator.mapAPL(0x87)); // Del
+        assertEquals('∆', translator.mapAPL(0x88)); // Delta
+        assertEquals('⍳', translator.mapAPL(0x89)); // Iota
+        assertEquals('→', translator.mapAPL(0x8A)); // Right arrow
+        assertEquals('⍞', translator.mapAPL(0x8B)); // Quote quad
+        assertEquals('×', translator.mapAPL(0x8E)); // Multiply
+        assertEquals('÷', translator.mapAPL(0x8F)); // Divide
+        assertEquals('⍟', translator.mapAPL(0x90)); // Circle star
+        assertEquals('⌹', translator.mapAPL(0x91)); // Domino / quad divide
+        assertEquals('⊤', translator.mapAPL(0x92)); // Down tack / encode
+        assertEquals('∪', translator.mapAPL(0x93)); // Union
+        assertEquals('⌈', translator.mapAPL(0x94)); // Ceiling
+        assertEquals('⍴', translator.mapAPL(0x95)); // Rho / shape
+        assertEquals('⍵', translator.mapAPL(0x96)); // Omega
+        assertEquals('○', translator.mapAPL(0x99)); // Circle
+        assertEquals('←', translator.mapAPL(0x9A)); // Left arrow
+        assertEquals('⍋', translator.mapAPL(0x9C)); // Grade up
+        assertEquals('⍒', translator.mapAPL(0x9E)); // Grade down
+        assertEquals('⍝', translator.mapAPL(0x9F)); // Lamp / comment
+        assertEquals('⊂', translator.mapAPL(0xA6)); // Enclose / left shoe
+        assertEquals('⊃', translator.mapAPL(0xA7)); // Disclose / right shoe
+        assertEquals('↑', translator.mapAPL(0xA8)); // Take / up arrow
+        assertEquals('↓', translator.mapAPL(0xA9)); // Drop / down arrow
+        assertEquals('⎕', translator.mapAPL(0xAA)); // Quad
+        assertEquals('⍉', translator.mapAPL(0xAC)); // Transpose
+        assertEquals('⊖', translator.mapAPL(0xB4)); // Circle bar
+    }
+
+    @Test
+    public void testScreenBufferAPLCharacterSetIntegration() {
+        EbcdicTranslator translator = new EbcdicTranslator();
+        ScreenBuffer screen = new ScreenBuffer(TerminalModel.IBM_3279_2, translator);
+
+        // Place box-drawing corner and horizontal line with cs=1 (CS_APL)
+        screen.setCellWithCS(0, 0xC5, 1); // Top left ┌
+        screen.setCellWithCS(1, 0xA2, 1); // Horizontal ─
+        screen.setCellWithCS(2, 0xD5, 1); // Top right ┐
+
+        screen.translateToUnicode();
+
+        assertEquals('┌', (char) screen.getCell(0).ucs4);
+        assertEquals('─', (char) screen.getCell(1).ucs4);
+        assertEquals('┐', (char) screen.getCell(2).ucs4);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/charset/CustomTranslationOverridePhase8Test.java

@@ -0,0 +1,79 @@
+package haus.nightmare.lib3270j.charset;
+
+import org.junit.jupiter.api.Test;
+import java.util.HashMap;
+import java.util.Map;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for Phase 8 custom user-defined character translation override tables.
+ */
+public class CustomTranslationOverridePhase8Test {
+
+    @Test
+    public void testSingleOverride() {
+        EbcdicTranslator translator = new EbcdicTranslator("037");
+        assertFalse(translator.hasCustomOverrides());
+
+        // Default CP037 mapping for 0xC1 is 'A'
+        assertEquals('A', translator.ebcdicToUnicode(0xC1));
+        assertEquals(0xC1, translator.unicodeToEbcdic('A'));
+
+        // Override 0xC1 to '★' (\u2605)
+        translator.setCustomOverride(0xC1, '★');
+        assertTrue(translator.hasCustomOverrides());
+        assertEquals('★', translator.ebcdicToUnicode(0xC1));
+        assertEquals(0xC1, translator.unicodeToEbcdic('★'));
+
+        // Non-overridden characters should continue using default CP037
+        assertEquals('B', translator.ebcdicToUnicode(0xC2));
+        assertEquals(0xC2, translator.unicodeToEbcdic('B'));
+
+        // Safe conversion
+        assertEquals((byte) 0xC1, translator.unicodeToEbcdicSafe('★'));
+
+        // Remove override
+        translator.removeCustomOverride(0xC1);
+        assertFalse(translator.hasCustomOverrides());
+        assertEquals('A', translator.ebcdicToUnicode(0xC1));
+    }
+
+    @Test
+    public void testBulkOverrides() {
+        EbcdicTranslator translator = new EbcdicTranslator("037");
+
+        Map<Integer, Character> ebcToUni = new HashMap<>();
+        ebcToUni.put(0x81, 'α'); // replace 'a' with alpha
+        ebcToUni.put(0x82, 'β'); // replace 'b' with beta
+
+        translator.setCustomOverrides(ebcToUni, null);
+        assertTrue(translator.hasCustomOverrides());
+
+        assertEquals('α', translator.ebcdicToUnicode(0x81));
+        assertEquals('β', translator.ebcdicToUnicode(0x82));
+        assertEquals('c', translator.ebcdicToUnicode(0x83));
+
+        assertEquals(0x81, translator.unicodeToEbcdic('α'));
+        assertEquals(0x82, translator.unicodeToEbcdic('β'));
+
+        // Clear overrides
+        translator.clearCustomOverrides();
+        assertFalse(translator.hasCustomOverrides());
+        assertEquals('a', translator.ebcdicToUnicode(0x81));
+        assertEquals('b', translator.ebcdicToUnicode(0x82));
+    }
+
+    @Test
+    public void testStringTranslationWithOverrides() {
+        EbcdicTranslator translator = new EbcdicTranslator("037");
+        translator.setCustomOverride(0xBA, '❮'); // override '[' with '❮'
+        translator.setCustomOverride(0xBB, '❯'); // override ']' with '❯'
+
+        byte[] input = new byte[] { (byte) 0xBA, (byte) 0xC8, (byte) 0xC9, (byte) 0xBB }; // [HI] in CP037
+        String decoded = translator.ebcdicToString(input, 0, input.length);
+        assertEquals("❮HI❯", decoded);
+
+        byte[] reEncoded = translator.stringToEbcdic("❮HI❯");
+        assertArrayEquals(input, reEncoded);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/charset/DBCSSOSIEscapingPhase8Test.java

@@ -0,0 +1,89 @@
+package haus.nightmare.lib3270j.charset;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for Phase 8 DBCS SO/SI escape sequence handling, shift preservation, and UTF-8 conversion.
+ */
+public class DBCSSOSIEscapingPhase8Test {
+
+    @Test
+    public void testSOSIPreserveMode() {
+        AbstractDBCSCodePage cp = (AbstractDBCSCodePage) CodePageRegistry.getCodePage("930");
+        cp.registerDbcsPair(0x4341, '\u6771'); // '東'
+        cp.registerDbcsPair(0x4342, '\u4EAC'); // '京'
+
+        // EBCDIC: 'I'(0xC9) + SO(0x0E) + 東(0x4341) + 京(0x4342) + SI(0x0F) + '1'(0xF1)
+        byte[] ebcdic = new byte[] {
+            (byte) 0xC9,
+            0x0E, (byte) 0x43, (byte) 0x41, (byte) 0x43, (byte) 0x42, 0x0F,
+            (byte) 0xF1
+        };
+
+        // Standard mode strips SO/SI from Unicode string
+        String standard = cp.ebcdicToString(ebcdic, 0, ebcdic.length, false);
+        assertEquals("I東京1", standard);
+
+        // Preserved mode keeps \u000E and \u000F in Unicode string
+        String preserved = cp.ebcdicToString(ebcdic, 0, ebcdic.length, true);
+        assertEquals("I\u000E東京\u000F1", preserved);
+
+        // Utility helper
+        String utf8WithSosi = cp.ebcdicToUtf8WithSOSI(ebcdic);
+        assertEquals(preserved, utf8WithSosi);
+    }
+
+    @Test
+    public void testEmbeddedSOSIStringConversion() {
+        AbstractDBCSCodePage cp = (AbstractDBCSCodePage) CodePageRegistry.getCodePage("930");
+        cp.registerDbcsPair(0x4341, '\u6771'); // '東'
+        cp.registerDbcsPair(0x4342, '\u4EAC'); // '京'
+
+        // Encode string that already contains embedded \u000E and \u000F
+        String inputWithSOSI = "I\u000E東京\u000F1";
+        byte[] encoded = cp.stringToEbcdic(inputWithSOSI, true);
+
+        byte[] expected = new byte[] {
+            (byte) 0xC9,
+            0x0E, (byte) 0x43, (byte) 0x41, (byte) 0x43, (byte) 0x42, 0x0F,
+            (byte) 0xF1
+        };
+        assertArrayEquals(expected, encoded);
+
+        // Utility helper
+        byte[] helperEncoded = cp.utf8WithSOSIToEbcdic(inputWithSOSI);
+        assertArrayEquals(expected, helperEncoded);
+    }
+
+    @Test
+    public void testAutoCloseUnclosedDBCSShift() {
+        AbstractDBCSCodePage cp = (AbstractDBCSCodePage) CodePageRegistry.getCodePage("930");
+        cp.registerDbcsPair(0x4341, '\u6771'); // '東'
+
+        // Text ending with a DBCS character without explicit SI
+        String s = "A東京";
+        byte[] encoded = cp.stringToEbcdic(s, false);
+
+        // Must end with SI (0x0F)
+        assertTrue(encoded.length > 0);
+        assertEquals(0x0F, encoded[encoded.length - 1] & 0xFF);
+    }
+
+    @Test
+    public void testRedundantSOSISuppression() {
+        AbstractDBCSCodePage cp = (AbstractDBCSCodePage) CodePageRegistry.getCodePage("930");
+        cp.registerDbcsPair(0x4341, '\u6771');
+
+        // Input containing redundant duplicate \u000E \u000E
+        String s = "\u000E\u000E東\u000F\u000F";
+        byte[] encoded = cp.stringToEbcdic(s, true);
+
+        // Should contain only one SO (0x0E) and one SI (0x0F)
+        assertEquals(4, encoded.length);
+        assertEquals(0x0E, encoded[0] & 0xFF);
+        assertEquals(0x43, encoded[1] & 0xFF);
+        assertEquals(0x41, encoded[2] & 0xFF);
+        assertEquals(0x0F, encoded[3] & 0xFF);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/charset/ExtendedCodePagesPhase8Test.java

@@ -0,0 +1,194 @@
+package haus.nightmare.lib3270j.charset;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for Phase 8 Extended EBCDIC Codepages (Arabic, Hebrew, Thai, Cyrillic, Turkish, Extended DBCS).
+ */
+public class ExtendedCodePagesPhase8Test {
+
+    @Test
+    public void testArabicCp420() {
+        CodePage cp = CodePageRegistry.getCodePage("420");
+        assertNotNull(cp);
+        assertEquals("420", cp.getCodePageId());
+        assertEquals(420, cp.getCpgid());
+        assertFalse(cp.isDBCS());
+
+        // Test alias resolution
+        assertEquals("420", CodePageRegistry.getCodePage("ar").getCodePageId());
+        assertEquals("420", CodePageRegistry.getCodePage("arabic").getCodePageId());
+        assertEquals("420", CodePageRegistry.getCodePage("ebcdic-cp-ar").getCodePageId());
+        assertEquals("420", CodePageRegistry.getCodePage("IBM420").getCodePageId());
+
+        // Basic ASCII and Arabic character mapping
+        assertEquals('A', cp.ebcdicToUnicode(0xC1));
+        assertEquals(0xC1, cp.unicodeToEbcdic('A'));
+        assertEquals(' ', cp.ebcdicToUnicode(0x40));
+        assertEquals(0x40, cp.unicodeToEbcdic(' '));
+
+        // Arabic characters (Hamza, Alef, Yeh, etc.)
+        int ebcHamza = cp.unicodeToEbcdic('\u0621');
+        assertTrue(ebcHamza >= 0);
+        assertEquals('\u0621', cp.ebcdicToUnicode(ebcHamza));
+    }
+
+    @Test
+    public void testHebrewCp424AndCp803() {
+        CodePage cp424 = CodePageRegistry.getCodePage("424");
+        assertNotNull(cp424);
+        assertEquals("424", cp424.getCodePageId());
+        assertEquals(424, cp424.getCpgid());
+        assertEquals(941, cp424.getCgcsgid());
+
+        assertEquals("424", CodePageRegistry.getCodePage("he").getCodePageId());
+        assertEquals("424", CodePageRegistry.getCodePage("hebrew").getCodePageId());
+
+        // Hebrew Alef \u05D0 in Cp424
+        int ebcAlef424 = cp424.unicodeToEbcdic('\u05D0');
+        assertTrue(ebcAlef424 >= 0);
+        assertEquals('\u05D0', cp424.ebcdicToUnicode(ebcAlef424));
+
+        CodePage cp803 = CodePageRegistry.getCodePage("803");
+        assertNotNull(cp803);
+        assertEquals("803", cp803.getCodePageId());
+        assertEquals(803, cp803.getCpgid());
+        assertEquals(1147, cp803.getCgcsgid());
+
+        assertEquals("803", CodePageRegistry.getCodePage("hebrew-old").getCodePageId());
+        assertEquals("803", CodePageRegistry.getCodePage("israel").getCodePageId());
+        assertEquals("803", CodePageRegistry.getCodePage("iw").getCodePageId());
+
+        // Hebrew Alef in Cp803
+        int ebcAlef803 = cp803.unicodeToEbcdic('\u05D0');
+        assertTrue(ebcAlef803 >= 0);
+        assertEquals('\u05D0', cp803.ebcdicToUnicode(ebcAlef803));
+    }
+
+    @Test
+    public void testThaiCp838AndCp1160() {
+        CodePage cp838 = CodePageRegistry.getCodePage("838");
+        assertNotNull(cp838);
+        assertEquals("838", cp838.getCodePageId());
+        assertEquals(838, cp838.getCpgid());
+        assertEquals(1176, cp838.getCgcsgid());
+
+        assertEquals("838", CodePageRegistry.getCodePage("th").getCodePageId());
+        assertEquals("838", CodePageRegistry.getCodePage("thai").getCodePageId());
+
+        // Thai character Ko Kai \u0E01
+        int ebcKoKai = cp838.unicodeToEbcdic('\u0E01');
+        assertTrue(ebcKoKai >= 0);
+        assertEquals('\u0E01', cp838.ebcdicToUnicode(ebcKoKai));
+
+        CodePage cp1160 = CodePageRegistry.getCodePage("1160");
+        assertNotNull(cp1160);
+        assertEquals("1160", cp1160.getCodePageId());
+        assertEquals(1160, cp1160.getCpgid());
+        assertEquals('€', cp1160.ebcdicToUnicode(0x9F));
+        assertEquals(0x9F, cp1160.unicodeToEbcdic('€'));
+        assertEquals("1160", CodePageRegistry.getCodePage("thai-euro").getCodePageId());
+    }
+
+    @Test
+    public void testCyrillicCp1025Cp1123Cp1154Cp880() {
+        CodePage cp1025 = CodePageRegistry.getCodePage("1025");
+        assertNotNull(cp1025);
+        assertEquals(1025, cp1025.getCpgid());
+        assertEquals(1150, cp1025.getCgcsgid());
+        assertEquals("1025", CodePageRegistry.getCodePage("ru").getCodePageId());
+        assertEquals("1025", CodePageRegistry.getCodePage("cyrillic").getCodePageId());
+        assertEquals("1025", CodePageRegistry.getCodePage("russian").getCodePageId());
+
+        // Cyrillic Capital Letter A \u0410 and small a \u0430
+        int ebcA1025 = cp1025.unicodeToEbcdic('\u0410');
+        assertTrue(ebcA1025 >= 0);
+        assertEquals('\u0410', cp1025.ebcdicToUnicode(ebcA1025));
+
+        // Cp1123 Ukraine
+        CodePage cp1123 = CodePageRegistry.getCodePage("1123");
+        assertNotNull(cp1123);
+        assertEquals(1123, cp1123.getCpgid());
+        assertEquals(1399, cp1123.getCgcsgid());
+        assertEquals("1123", CodePageRegistry.getCodePage("ukraine").getCodePageId());
+        assertEquals("1123", CodePageRegistry.getCodePage("ukrainian").getCodePageId());
+
+        // Cp1154 Cyrillic with Euro
+        CodePage cp1154 = CodePageRegistry.getCodePage("1154");
+        assertNotNull(cp1154);
+        assertEquals(1154, cp1154.getCpgid());
+        assertEquals(1305, cp1154.getCgcsgid());
+        assertEquals('€', cp1154.ebcdicToUnicode(0x9F));
+        assertEquals("1154", CodePageRegistry.getCodePage("cyrillic-euro").getCodePageId());
+
+        // Cp880 Cyrillic Russian
+        CodePage cp880 = CodePageRegistry.getCodePage("880");
+        assertNotNull(cp880);
+        assertEquals(880, cp880.getCpgid());
+        assertEquals(960, cp880.getCgcsgid());
+        assertEquals("880", CodePageRegistry.getCodePage("cyrillic-russian").getCodePageId());
+    }
+
+    @Test
+    public void testTurkishCp1155AndCp905() {
+        CodePage cp1155 = CodePageRegistry.getCodePage("1155");
+        assertNotNull(cp1155);
+        assertEquals(1155, cp1155.getCpgid());
+        assertEquals(1306, cp1155.getCgcsgid());
+        assertEquals('€', cp1155.ebcdicToUnicode(0x9F));
+        assertEquals("1155", CodePageRegistry.getCodePage("turkish-euro").getCodePageId());
+
+        CodePage cp905 = CodePageRegistry.getCodePage("905");
+        assertNotNull(cp905);
+        assertEquals(905, cp905.getCpgid());
+        assertEquals(1151, cp905.getCgcsgid());
+        assertEquals("905", CodePageRegistry.getCodePage("turkish-latin3").getCodePageId());
+    }
+
+    @Test
+    public void testExtendedChineseDBCSCp1388AndCp1371() {
+        CodePage cp1388 = CodePageRegistry.getCodePage("1388");
+        assertNotNull(cp1388);
+        assertTrue(cp1388.isDBCS());
+        assertEquals(1388, cp1388.getCpgid());
+        assertEquals(1175, cp1388.getCgcsgid());
+        assertEquals("1388", CodePageRegistry.getCodePage("chinese-ext-simplified").getCodePageId());
+        assertEquals("1388", CodePageRegistry.getCodePage("zh-simplified-ext").getCodePageId());
+
+        CodePage cp1371 = CodePageRegistry.getCodePage("1371");
+        assertNotNull(cp1371);
+        assertTrue(cp1371.isDBCS());
+        assertEquals(1371, cp1371.getCpgid());
+        assertEquals(1174, cp1371.getCgcsgid());
+        assertEquals("1371", CodePageRegistry.getCodePage("chinese-ext-traditional").getCodePageId());
+        assertEquals("1371", CodePageRegistry.getCodePage("zh-traditional-ext").getCodePageId());
+    }
+
+    @Test
+    public void testHasCodePageQuery() {
+        assertTrue(CodePageRegistry.hasCodePage("037"));
+        assertTrue(CodePageRegistry.hasCodePage("1047"));
+        assertTrue(CodePageRegistry.hasCodePage("420"));
+        assertTrue(CodePageRegistry.hasCodePage("424"));
+        assertTrue(CodePageRegistry.hasCodePage("803"));
+        assertTrue(CodePageRegistry.hasCodePage("838"));
+        assertTrue(CodePageRegistry.hasCodePage("1160"));
+        assertTrue(CodePageRegistry.hasCodePage("1025"));
+        assertTrue(CodePageRegistry.hasCodePage("1123"));
+        assertTrue(CodePageRegistry.hasCodePage("1154"));
+        assertTrue(CodePageRegistry.hasCodePage("880"));
+        assertTrue(CodePageRegistry.hasCodePage("1155"));
+        assertTrue(CodePageRegistry.hasCodePage("905"));
+        assertTrue(CodePageRegistry.hasCodePage("1388"));
+        assertTrue(CodePageRegistry.hasCodePage("1371"));
+
+        assertTrue(CodePageRegistry.hasCodePage("ar"));
+        assertTrue(CodePageRegistry.hasCodePage("hebrew"));
+        assertTrue(CodePageRegistry.hasCodePage("thai"));
+        assertTrue(CodePageRegistry.hasCodePage("russian"));
+        assertTrue(CodePageRegistry.hasCodePage("ukraine"));
+
+        assertFalse(CodePageRegistry.hasCodePage("nonexistent-cp-9999"));
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/ecl/ECLSessionPhase10Test.java

@@ -0,0 +1,453 @@
+package haus.nightmare.lib3270j.ecl;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.TerminalModel;
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.input.InputProcessor;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Comprehensive Unit Tests for Phase 10: ECL API & Session Architecture Facade.
+ */
+public class ECLSessionPhase10Test {
+
+    private ScreenBuffer screen;
+    private EbcdicTranslator translator;
+    private InputProcessor input;
+    private ECLPS ps;
+    private ECLOIA oia;
+    private Telnet3270Client client;
+    private ECLSession session;
+
+    @BeforeEach
+    public void setUp() {
+        ConnectionConfig config = new ConnectionConfig("mainframe.example.com", 23, TerminalModel.IBM_3279_4);
+        config.setLuName("LU3270A");
+        config.setCodePage("037");
+
+        client = new Telnet3270Client(config);
+        session = new ECLSession(client);
+        ps = session.GetPS();
+        oia = session.GetOIA();
+        screen = client.getScreenBuffer();
+        translator = client.getTranslator();
+        input = client.getInputProcessor();
+    }
+
+    @Test
+    public void testECLSessionInstantiationWithConfigAndProperties() {
+        // Test default constructor
+        ECLSession defSession = new ECLSession();
+        assertNotNull(defSession.GetPS());
+        assertNotNull(defSession.GetOIA());
+        assertNotNull(defSession.GetConnection());
+        assertNotNull(defSession.GetXfer());
+        assertNotNull(defSession.GetFieldList());
+        assertNotNull(defSession.GetClient());
+        assertEquals(23, defSession.GetConnection().GetPort());
+
+        // Test explicit host/port/model constructor
+        ECLSession hpSession = new ECLSession("tso.test.org", 992, TerminalModel.IBM_3279_2, true);
+        assertEquals("tso.test.org", hpSession.GetConnection().GetHost());
+        assertEquals(992, hpSession.GetConnection().GetPort());
+        assertEquals(TerminalModel.IBM_3279_2, hpSession.GetConnection().GetModel());
+        assertTrue(hpSession.GetConnection().IsSSL());
+
+        // Test Properties constructor
+        Properties props = new Properties();
+        props.setProperty(ECLSession.SESSION_HOST, "mvs.corp.net");
+        props.setProperty(ECLSession.SESSION_PORT, "2023");
+        props.setProperty(ECLSession.SESSION_CODE_PAGE, "1047");
+        props.setProperty(ECLSession.SESSION_MODEL, "5"); // 27x132
+        props.setProperty(ECLSession.SESSION_SSL, "true");
+        props.setProperty(ECLSession.SESSION_LU_NAME, "TSOLU01");
+        props.setProperty(ECLSession.SESSION_TN3270E, "true");
+
+        ECLSession propSession = new ECLSession(props);
+        assertEquals("mvs.corp.net", propSession.GetConnection().GetHost());
+        assertEquals(2023, propSession.GetConnection().GetPort());
+        assertEquals("1047", propSession.GetConnection().GetCodePage());
+        assertEquals(TerminalModel.IBM_3279_5, propSession.GetConnection().GetModel());
+        assertTrue(propSession.GetConnection().IsSSL());
+        assertEquals("TSOLU01", propSession.GetConnection().GetLUName());
+        assertEquals("TN3270E", propSession.GetConnection().GetConnType());
+
+        // Verify Properties sync and retrieval
+        Properties retrieved = propSession.GetProperties();
+        assertEquals("mvs.corp.net", retrieved.getProperty(ECLSession.SESSION_HOST));
+        assertEquals("2023", retrieved.getProperty(ECLSession.SESSION_PORT));
+    }
+
+    @Test
+    public void testECLConnectionAttributesAndState() {
+        ECLConnection conn = session.GetConnection();
+        assertNotNull(conn);
+        assertEquals("mainframe.example.com", conn.GetHost());
+        assertEquals(23, conn.GetPort());
+        assertEquals("037", conn.GetCodePage());
+        assertEquals(TerminalModel.IBM_3279_4, conn.GetModel());
+        assertEquals("LU3270A", conn.GetLUName());
+        assertEquals("LU3270A", conn.GetDevName());
+        assertFalse(conn.IsSSL());
+        assertEquals(ConnectionState.NOT_CONNECTED, conn.GetState());
+        assertEquals(0, conn.GetStateCode());
+        assertFalse(conn.IsConnected());
+        assertFalse(conn.IsReady());
+        assertTrue(conn.IsDisconnecting());
+
+        // Verify state mappings
+        assertEquals(0, ConnectionState.NOT_CONNECTED.toHoDStateCode());
+        assertEquals(1, ConnectionState.TELNET_PENDING.toHoDStateCode());
+        assertEquals(2, ConnectionState.CONNECTED_NVT.toHoDStateCode());
+        assertEquals(2, ConnectionState.CONNECTED_UNBOUND.toHoDStateCode());
+        assertEquals(3, ConnectionState.CONNECTED_3270.toHoDStateCode());
+        assertEquals(3, ConnectionState.CONNECTED_TN3270E.toHoDStateCode());
+    }
+
+    @Test
+    public void testECLScreenDescMatching() {
+        // Setup screen buffer with sample formatted screen
+        screen.clear();
+        screen.setCursorAddress(0);
+        // Write: SF (prot), "TSO/E LOGON", SF (unprot), "USER01", SF (prot), "PASSWORD", SF (unprot), "        "
+        screen.setCellFA(0, (byte) 0x60); // SF protected
+        String text1 = "TSO/E LOGON";
+        for (int i = 0; i < text1.length(); i++) {
+            screen.setChar(0, i + 1, text1.charAt(i));
+        }
+
+        int userFaPos = 20;
+        screen.setCellFA(userFaPos, (byte) 0x40); // SF unprotected
+        String userVal = "USER01";
+        for (int i = 0; i < userVal.length(); i++) {
+            screen.setChar(0, userFaPos + 1 + i, userVal.charAt(i));
+        }
+
+        int passFaPos = 40;
+        screen.setCellFA(passFaPos, (byte) 0x60); // SF protected
+        String passLabel = "PASSWORD";
+        for (int i = 0; i < passLabel.length(); i++) {
+            screen.setChar(0, passFaPos + 1 + i, passLabel.charAt(i));
+        }
+
+        int passInputPos = 60;
+        screen.setCellFA(passInputPos, (byte) 0x40); // SF unprot hidden
+
+        ps.setCursorPos(userFaPos + 1);
+
+        // 1. Test match string at 1-based row/col
+        ECLScreenDesc desc1 = new ECLScreenDesc();
+        desc1.AddString("TSO/E LOGON", 1, 2, true);
+        assertTrue(desc1.Matches(session));
+        assertTrue(desc1.Matches(ps, oia));
+        assertTrue(desc1.Matches(client));
+
+        // Test case sensitivity
+        ECLScreenDesc descCaseMismatch = new ECLScreenDesc();
+        descCaseMismatch.AddString("tso/e logon", 1, 2, true);
+        assertFalse(descCaseMismatch.Matches(session));
+
+        ECLScreenDesc descCaseInsensitive = new ECLScreenDesc();
+        descCaseInsensitive.AddString("tso/e logon", 1, 2, false);
+        assertTrue(descCaseInsensitive.Matches(session));
+
+        // 2. Test match string anywhere on screen
+        ECLScreenDesc descAnywhere = new ECLScreenDesc();
+        descAnywhere.AddString("PASSWORD");
+        assertTrue(descAnywhere.Matches(session));
+
+        ECLScreenDesc descAnywhereFail = new ECLScreenDesc();
+        descAnywhereFail.AddString("CICS TRANSACTION");
+        assertFalse(descAnywhereFail.Matches(session));
+
+        // 3. Test match string in rectangular region
+        ECLScreenDesc descRect = new ECLScreenDesc();
+        descRect.AddStringInRect("USER01", 1, 1, 2, 80, true);
+        assertTrue(descRect.Matches(session));
+
+        ECLScreenDesc descRectFail = new ECLScreenDesc();
+        descRectFail.AddStringInRect("USER01", 2, 1, 5, 80, true);
+        assertFalse(descRectFail.Matches(session));
+
+        // 4. Test match cursor position
+        ECLScreenDesc descCursor = new ECLScreenDesc();
+        descCursor.AddCursorPos(1, userFaPos + 2);
+        assertTrue(descCursor.Matches(session));
+
+        ECLScreenDesc descCursorFail = new ECLScreenDesc();
+        descCursorFail.AddCursorPos(10, 10);
+        assertFalse(descCursorFail.Matches(session));
+
+        // 5. Test field counts
+        ECLScreenDesc descFields = new ECLScreenDesc();
+        descFields.AddNumFields(4);
+        descFields.AddNumInputFields(2);
+        assertTrue(descFields.Matches(session));
+
+        ECLScreenDesc descFieldsFail = new ECLScreenDesc();
+        descFieldsFail.AddNumFields(10);
+        assertFalse(descFieldsFail.Matches(session));
+
+        // 6. Test OIA status
+        oia.setInputInhibited(ECLConstants.INHIBIT_NOT_INHIBITED);
+        ECLScreenDesc descOia = new ECLScreenDesc();
+        descOia.AddOIAStatus(ECLConstants.INHIBIT_NOT_INHIBITED);
+        assertTrue(descOia.Matches(session));
+
+        oia.setInputInhibited(ECLConstants.INHIBIT_SYSTEM_LOCK);
+        assertFalse(descOia.Matches(session));
+
+        ECLScreenDesc descOiaLocked = new ECLScreenDesc();
+        descOiaLocked.AddOIAStatus(ECLConstants.INHIBIT_SYSTEM_LOCK);
+        assertTrue(descOiaLocked.Matches(session));
+        oia.setInputInhibited(ECLConstants.INHIBIT_NOT_INHIBITED);
+
+        // 7. Test Clear and composite descriptor
+        ECLScreenDesc composite = new ECLScreenDesc();
+        composite.AddString("TSO/E LOGON", 1, 2);
+        composite.AddString("PASSWORD");
+        composite.AddNumFields(4);
+        assertEquals(3, composite.getConditionCount());
+        assertTrue(composite.Matches(session));
+
+        composite.Clear();
+        assertEquals(0, composite.getConditionCount());
+        assertTrue(composite.Matches(session)); // Empty descriptor matches everything
+    }
+
+    @Test
+    public void testECLPSListenerAndEventDispatching() {
+        AtomicInteger updateCount = new AtomicInteger(0);
+        AtomicInteger cursorCount = new AtomicInteger(0);
+        AtomicInteger alarmCount = new AtomicInteger(0);
+        AtomicInteger resizeCount = new AtomicInteger(0);
+        AtomicReference<ECLPSEvent> lastEvent = new AtomicReference<>();
+
+        ECLPSListener listener = new ECLPSListener() {
+            @Override
+            public void psChanged(ECLPSEvent event) {
+                updateCount.incrementAndGet();
+                lastEvent.set(event);
+            }
+
+            @Override
+            public void psCursorMoved(ECLPSEvent event) {
+                cursorCount.incrementAndGet();
+            }
+
+            @Override
+            public void psAlarm(ECLPSEvent event) {
+                alarmCount.incrementAndGet();
+            }
+
+            @Override
+            public void psResized(ECLPSEvent event) {
+                resizeCount.incrementAndGet();
+            }
+        };
+
+        ps.RegisterPSEvent(listener);
+
+        // 1. Trigger PS Update
+        ps.notifyPSUpdate(2, 5, 2, 20, false);
+        assertEquals(1, updateCount.get());
+        assertNotNull(lastEvent.get());
+        assertEquals(ECLPSEvent.PS_UPDATE, lastEvent.get().getEventType());
+        assertEquals(2, lastEvent.get().getStartRow());
+        assertEquals(5, lastEvent.get().getStartCol());
+        assertEquals(2, lastEvent.get().getEndRow());
+        assertEquals(20, lastEvent.get().getEndCol());
+        assertFalse(lastEvent.get().isFullUpdate());
+        assertSame(ps, lastEvent.get().getPS());
+
+        // 2. Trigger Cursor Move
+        ps.notifyCursorMoved(0, 85);
+        assertEquals(2, updateCount.get());
+        assertEquals(1, cursorCount.get());
+        assertEquals(ECLPSEvent.PS_CURSOR, lastEvent.get().getEventType());
+        assertEquals(85, lastEvent.get().getNewCursorAddress());
+
+        // 3. Trigger Alarm
+        ps.notifyAlarm();
+        assertEquals(3, updateCount.get());
+        assertEquals(1, alarmCount.get());
+        assertEquals(ECLPSEvent.PS_ALARM, lastEvent.get().getEventType());
+
+        // 4. Trigger Screen Resize
+        ps.notifyScreenResized(32, 80);
+        assertEquals(4, updateCount.get());
+        assertEquals(1, resizeCount.get());
+        assertEquals(ECLPSEvent.PS_RESIZE, lastEvent.get().getEventType());
+        assertEquals(32, lastEvent.get().getRows());
+        assertEquals(80, lastEvent.get().getCols());
+
+        // 5. Unregister listener
+        ps.UnregisterPSEvent(listener);
+        ps.notifyPSUpdate(0, 0, 23, 79, true);
+        assertEquals(4, updateCount.get()); // Count should not change after unregister
+    }
+
+    @Test
+    public void testECLOIAListenerAndEventDispatching() {
+        AtomicInteger changeCount = new AtomicInteger(0);
+        AtomicInteger lockCount = new AtomicInteger(0);
+        AtomicReference<ECLOIAEvent> lastOiaEvent = new AtomicReference<>();
+
+        ECLOIAListener listener = new ECLOIAListener() {
+            @Override
+            public void oiaChanged(ECLOIAEvent event) {
+                changeCount.incrementAndGet();
+                lastOiaEvent.set(event);
+            }
+
+            @Override
+            public void oiaLockStateChanged(ECLOIAEvent event) {
+                lockCount.incrementAndGet();
+            }
+        };
+
+        oia.RegisterOIAEvent(listener);
+
+        // 1. Change inhibit state
+        oia.setInputInhibited(ECLConstants.INHIBIT_PROTECTED_FIELD);
+        assertEquals(1, changeCount.get());
+        assertNotNull(lastOiaEvent.get());
+        assertEquals(ECLConstants.INHIBIT_PROTECTED_FIELD, lastOiaEvent.get().getInputInhibited());
+        assertEquals("X-PROT", lastOiaEvent.get().getStatusString());
+        assertTrue(lastOiaEvent.get().isInputInhibited());
+        assertSame(oia, lastOiaEvent.get().getOIA());
+
+        // 2. Change inhibit back to normal
+        oia.setInputInhibited(ECLConstants.INHIBIT_NOT_INHIBITED);
+        assertEquals(2, changeCount.get());
+        assertEquals(ECLConstants.INHIBIT_NOT_INHIBITED, lastOiaEvent.get().getInputInhibited());
+        assertEquals("READY", lastOiaEvent.get().getStatusString());
+        assertFalse(lastOiaEvent.get().isInputInhibited());
+
+        // 3. Test uppercase wait methods
+        assertTrue(oia.WaitForInput(100));
+        assertTrue(oia.WaitForSystemAvailable(100));
+        assertTrue(oia.WaitForAppAvailable(100));
+
+        // 4. Unregister listener
+        oia.UnregisterOIAEvent(listener);
+        oia.setInputInhibited(ECLConstants.INHIBIT_NUMERIC_ONLY);
+        assertEquals(2, changeCount.get());
+    }
+
+    @Test
+    public void testECLCommListenerAndEventDispatching() {
+        ECLConnection conn = session.GetConnection();
+        AtomicInteger commCount = new AtomicInteger(0);
+        AtomicInteger errorCount = new AtomicInteger(0);
+        AtomicBoolean notifyConnected = new AtomicBoolean(false);
+        AtomicReference<ECLCommEvent> lastCommEvent = new AtomicReference<>();
+
+        ECLCommListener listener = new ECLCommListener() {
+            @Override
+            public void commEvent(ECLCommEvent event) {
+                commCount.incrementAndGet();
+                lastCommEvent.set(event);
+            }
+
+            @Override
+            public void commError(ECLCommEvent event) {
+                errorCount.incrementAndGet();
+            }
+        };
+
+        conn.RegisterCommEvent(listener);
+        conn.RegisterCommEvent(connected -> notifyConnected.set(connected), false);
+
+        // Simulate connection state change via listener
+        client.getTelnetFSM().onError("Connection reset by peer");
+        assertEquals(1, commCount.get());
+        assertEquals(1, errorCount.get());
+        assertNotNull(lastCommEvent.get());
+        assertEquals(ECLCommEvent.COMM_ERROR, lastCommEvent.get().getEventType());
+        assertEquals("Connection reset by peer", lastCommEvent.get().getErrorMessage());
+
+        // Unregister
+        conn.UnregisterCommEvent(listener);
+    }
+
+    @Test
+    public void testSendKeysWithCoordinates() {
+        screen.clear();
+        screen.setCursorAddress(0);
+        // Setup an unprotected field at row 5, col 10 (0-based: row 4, col 9)
+        int faPos = 4 * 80 + 8; // 328
+        screen.setCellFA(faPos, (byte) 0x40); // Unprotected
+
+        // Send keys with 1-based (row 5, col 10)
+        session.SendKeys("IBM3270", 5, 10);
+        assertEquals("IBM3270", ps.getString(faPos + 1, 7));
+
+        // Send bracketed mnemonics
+        ps.setCursorPos(1, 1);
+        ps.SendKeys("A[tab]B", 1, 1);
+        assertNotNull(ps.getString(0, 10));
+    }
+
+    @Test
+    public void testWaitForScreenWithDescriptor() {
+        screen.clear();
+        screen.setChar(0, 0, 'L');
+        screen.setChar(0, 1, 'O');
+        screen.setChar(0, 2, 'G');
+        screen.setChar(0, 3, 'O');
+        screen.setChar(0, 4, 'N');
+
+        ECLScreenDesc desc = new ECLScreenDesc();
+        desc.AddString("LOGON", 1, 1);
+
+        assertTrue(session.WaitForScreen(desc, 100));
+        assertTrue(ps.WaitForScreen(desc, 100));
+
+        ECLScreenDesc descFail = new ECLScreenDesc();
+        descFail.AddString("NONEXISTENT", 1, 1);
+        assertFalse(session.WaitForScreen(descFail, 50));
+    }
+
+    @Test
+    public void testIBMHoDPackageCompatibility() {
+        // Instantiate using haus.nightmare.lib3270j.eNetwork.ECL.* package hierarchy
+        haus.nightmare.lib3270j.eNetwork.ECL.ECLSession hodSession = new haus.nightmare.lib3270j.eNetwork.ECL.ECLSession();
+        assertNotNull(hodSession.GetPS());
+        assertNotNull(hodSession.GetOIA());
+        assertNotNull(hodSession.GetConnection());
+        assertNotNull(hodSession.GetXfer());
+        assertNotNull(hodSession.GetFieldList());
+
+        haus.nightmare.lib3270j.eNetwork.ECL.ECLScreenDesc hodDesc = new haus.nightmare.lib3270j.eNetwork.ECL.ECLScreenDesc();
+        hodDesc.AddString("TEST");
+        assertEquals(1, hodDesc.getConditionCount());
+
+        AtomicBoolean hodPsReceived = new AtomicBoolean(false);
+        hodSession.GetPS().RegisterPSEvent(new haus.nightmare.lib3270j.eNetwork.ECL.event.ECLPSListener() {
+            @Override
+            public void psChanged(haus.nightmare.lib3270j.ecl.ECLPSEvent event) {
+                hodPsReceived.set(true);
+            }
+        });
+
+        hodSession.GetPS().notifyPSUpdate(0, 0, 10, 10, true);
+        assertTrue(hodPsReceived.get());
+
+        // Test exception
+        haus.nightmare.lib3270j.eNetwork.ECL.ECLException ex = new haus.nightmare.lib3270j.eNetwork.ECL.ECLException(haus.nightmare.lib3270j.eNetwork.ECL.ECLErrors.ECL_ERR_COMM_TIMEOUT, "Timeout");
+        assertEquals(haus.nightmare.lib3270j.eNetwork.ECL.ECLErrors.ECL_ERR_COMM_TIMEOUT, ex.getErrorCode());
+        assertEquals("Timeout", ex.getMessage());
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/ecl/ECLXferTest.java

@@ -88,4 +88,51 @@ public class ECLXferTest {
         assertTrue(loaded[0]);
         assertEquals(1, fileList.size());
     }
+
+    @Test
+    public void testGetFilesBatchDownloadCallback() {
+        boolean[] loaded = new boolean[1];
+        xfer.getFiles("PROFILE EXEC A1 V 80 25 1 2026-05-10 14:22:01\n", "/tmp/nonexistent_test_dir", new haus.nightmare.lib3270j.ft.dir.FileTransferHostDirectoryInterface() {
+            @Override
+            public void onDirectoryLoaded(List<? extends HostDirectoryEntry> entries) {
+                loaded[0] = true;
+            }
+
+            @Override
+            public void onDirectoryError(String errorMessage) {}
+        });
+
+        assertTrue(loaded[0]);
+    }
+
+    @Test
+    public void testGetFilesVectorOverload() {
+        java.util.Vector<String> localFiles = new java.util.Vector<>();
+        java.util.Vector<String> hostFiles = new java.util.Vector<>();
+        boolean[] loaded = new boolean[1];
+
+        xfer.getFiles("PROFILE EXEC A1 V 80 25 1 2026-05-10 14:22:01\n", 0, 0, localFiles, hostFiles, new haus.nightmare.lib3270j.ft.dir.FileTransferHostDirectoryInterface() {
+            @Override
+            public void onDirectoryLoaded(List<? extends HostDirectoryEntry> entries) {
+                loaded[0] = true;
+            }
+
+            @Override
+            public void onDirectoryError(String errorMessage) {}
+        });
+
+        assertTrue(loaded[0]);
+        assertEquals(1, hostFiles.size());
+        assertEquals("PROFILE EXEC A1", hostFiles.get(0));
+    }
+
+    @Test
+    public void testCMSPrintXferInstantiation() {
+        assertNotNull(xfer.getCMSPrintXfer());
+    }
+
+    @Test
+    public void testResendInboundDataBufferToHostDelegation() {
+        assertFalse(xfer.resendInboundDataBufferToHost());
+    }
 }

lib3270j/src/test/java/haus/nightmare/lib3270j/ft/CMSPrintXferTest.java

@@ -0,0 +1,107 @@
+package haus.nightmare.lib3270j.ft;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class CMSPrintXferTest {
+
+    @Test
+    public void testAsaCarriageControlTranslation() {
+        // ASA: ' ' = single space, '0' = double space, '-' = triple space, '1' = form feed, '+' = overstrike
+        String input = "1PAGE 1 HEADER\n" +
+                       " --------------------\n" +
+                       "0ITEM 1 DESCRIPTION\n" +
+                       "-ITEM 2 AFTER 3 LINES\n" +
+                       "+ITEM 2 UNDERLINED\n" +
+                       "1PAGE 2 HEADER\n";
+
+        String expected = "\fPAGE 1 HEADER\n" +
+                          "--------------------\n\n" +
+                          "ITEM 1 DESCRIPTION\n\n\n" +
+                          "ITEM 2 AFTER 3 LINES\r" +
+                          "ITEM 2 UNDERLINED\n\f" +
+                          "PAGE 2 HEADER";
+
+        String result = CMSPrintXfer.convertAsaCarriageControl(input);
+        assertEquals(expected, result);
+    }
+
+    @Test
+    public void testAsaCarriageControlBytesConversion() {
+        String input = " REPORT TITLE\n0SUBTITLE\n";
+        byte[] inputBytes = input.getBytes(StandardCharsets.UTF_8);
+
+        byte[] converted = CMSPrintXfer.convertAsaCarriageControl(inputBytes, false);
+        String convertedStr = new String(converted, StandardCharsets.UTF_8);
+
+        assertEquals("REPORT TITLE\n\nSUBTITLE", convertedStr);
+    }
+
+    @Test
+    public void testMachineCarriageControlTranslation() {
+        // 0x09: Write and advance 1 line
+        // 0x11: Write and advance 2 lines
+        // 0x89: Write and skip to channel 1 (form feed)
+        byte[] input = new byte[] {
+            0x09, 'H', 'E', 'L', 'L', 'O', '\n',
+            0x11, 'W', 'O', 'R', 'L', 'D', '\n',
+            (byte) 0x89, 'N', 'E', 'X', 'T', ' ', 'P', 'A', 'G', 'E', '\n'
+        };
+
+        byte[] output = CMSPrintXfer.convertMachineCarriageControl(input);
+        String outputStr = new String(output, StandardCharsets.UTF_8);
+
+        assertTrue(outputStr.startsWith("HELLO\n"));
+        assertTrue(outputStr.contains("WORLD\n\n"));
+        assertTrue(outputStr.contains("NEXT PAGE\n\f"));
+    }
+
+    @Test
+    public void testParseQueryReaderOutput() {
+        String sampleRdrOutput =
+            "ORIGINID FILE CLASS RECORDS  CPY HOLD DATE  TIME     NAME     TYPE     DIST\n" +
+            "MAINT    0042 A RDR 00000120 001 NONE 08/31 14:15:22 PROFILE  EXEC     SYSTEM\n" +
+            "OPERATOR 0099 B RDR 00000500 002 USER 08/31 14:20:00 PAYROLL  DATA     FINANCE\n";
+
+        List<CMSPrintXfer.SpoolFileEntry> entries = CMSPrintXfer.parseQueryReaderOutput(sampleRdrOutput);
+        assertEquals(2, entries.size());
+
+        CMSPrintXfer.SpoolFileEntry entry1 = entries.get(0);
+        assertEquals(42, entry1.getSpoolId());
+        assertEquals("MAINT", entry1.getOwner());
+        assertEquals("A", entry1.getSpoolClass());
+        assertEquals(120, entry1.getRecords());
+        assertEquals(1, entry1.getCopies());
+        assertEquals("NONE", entry1.getHoldStatus());
+        assertEquals("08/31", entry1.getDate());
+        assertEquals("14:15:22", entry1.getTime());
+        assertEquals("PROFILE", entry1.getFileName());
+        assertEquals("EXEC", entry1.getFileType());
+        assertEquals("RDR", entry1.getDeviceType());
+
+        CMSPrintXfer.SpoolFileEntry entry2 = entries.get(1);
+        assertEquals(99, entry2.getSpoolId());
+        assertEquals("OPERATOR", entry2.getOwner());
+        assertEquals("PAYROLL", entry2.getFileName());
+        assertEquals("DATA", entry2.getFileType());
+    }
+
+    @Test
+    public void testParseQueryPrinterOutput() {
+        String samplePrtOutput =
+            "ORIGINID FILE CLASS RECORDS  CPY HOLD DATE  TIME     NAME     TYPE     DIST\n" +
+            "USER01   0105 A PRT 00000045 001 USER 08/31 15:00:00 REPORT   LISTING  OFFICE\n";
+
+        List<CMSPrintXfer.SpoolFileEntry> entries = CMSPrintXfer.parseQueryPrinterOutput(samplePrtOutput);
+        assertEquals(1, entries.size());
+        assertEquals(105, entries.get(0).getSpoolId());
+        assertEquals("USER01", entries.get(0).getOwner());
+        assertEquals("REPORT", entries.get(0).getFileName());
+        assertEquals("LISTING", entries.get(0).getFileType());
+        assertEquals("PRT", entries.get(0).getDeviceType());
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/ft/FTConfigTest.java

@@ -80,4 +80,49 @@ public class FTConfigTest {
 
         assertEquals("IND$FILE PUT TEST FILE A (ASCII CRLF RECFM V LRECL 132", config.buildCommand());
     }
+
+    @Test
+    public void testParseOptionsComprehensive() {
+        FTConfig config = new FTConfig();
+        config.setDirection(FTConfig.Direction.SEND);
+        config.setHostFilename("MY.DATASET");
+        config.parseOptions("TSO ASCII CRLF RECFM(F) LRECL(80) BLKSIZE(3120) SPACE(10,5) TRACKS REPLACE CODEPAGE(CP037) BUFFERSIZE(8192)");
+
+        assertEquals(FTConfig.HostType.TSO, config.getHostType());
+        assertEquals(FTConfig.TransferMode.ASCII, config.getTransferMode());
+        assertEquals(FTConfig.CrAction.REMOVE, config.getCrAction());
+        assertEquals(FTConfig.RecordFormat.FIXED, config.getRecfm());
+        assertEquals(80, config.getLrecl());
+        assertEquals(3120, config.getBlksize());
+        assertEquals(10, config.getPrimarySpace());
+        assertEquals(5, config.getSecondarySpace());
+        assertEquals(FTConfig.AllocationUnit.TRACKS, config.getUnits());
+        assertEquals(FTConfig.ExistAction.REPLACE, config.getExistAction());
+        assertEquals("CP037", config.getCodePage());
+        assertEquals(8192, config.getDftBufferSize());
+
+        String cmd = config.buildCommand();
+        assertTrue(cmd.contains("RECFM(F)"));
+        assertTrue(cmd.contains("LRECL(80)"));
+        assertTrue(cmd.contains("BLKSIZE(3120)"));
+        assertTrue(cmd.contains("SPACE(10,5)"));
+        assertTrue(cmd.contains("TRACKS"));
+        assertTrue(cmd.contains("REPLACE"));
+    }
+
+    @Test
+    public void testCicsCommandGeneration() {
+        FTConfig config = new FTConfig();
+        config.setHostType(FTConfig.HostType.CICS);
+        config.setDirection(FTConfig.Direction.SEND);
+        config.setHostFilename("FILE01");
+        config.parseOptions("CICS BINARY NOCRLF REPLACE");
+
+        assertEquals(FTConfig.HostType.CICS, config.getHostType());
+        assertEquals(FTConfig.TransferMode.BINARY, config.getTransferMode());
+        assertEquals(FTConfig.ExistAction.REPLACE, config.getExistAction());
+
+        String cmd = config.buildCommand();
+        assertEquals("IND$FILE PUT FILE01 (BINARY NOCRLF REPLACE", cmd);
+    }
 }

lib3270j/src/test/java/haus/nightmare/lib3270j/ft/FTDftTest.java

@@ -500,4 +500,80 @@ public class FTDftTest {
 
         assertArrayEquals(firstSent, retransmitted);
     }
+
+    @Test
+    public void testSendDataPacketDirectWithMtuSplitting() {
+        ftDft.setMTUSize(512);
+        assertEquals(512, ftDft.getMTUSize());
+
+        // Send a 1000-byte payload, which should be split into 3 structured field chunks (each max 512 - 27 = 485 bytes)
+        byte[] testPayload = new byte[1000];
+        for (int i = 0; i < testPayload.length; i++) {
+            testPayload[i] = (byte) (i & 0xFF);
+        }
+
+        ftDft.sendDataPacket(testPayload);
+
+        assertEquals(3, inputProcessor.sentStructuredFields.size());
+        assertEquals(1000, ftDft.getBytesTransferred());
+
+        // Verify that each structured field is SF_TRANSFER_DATA (0xD0) and has TR_GET_REPLY (0x4605)
+        for (byte[] sf : inputProcessor.sentStructuredFields) {
+            assertEquals(AID_SF, sf[0] & 0xFF);
+            assertEquals(SF_TRANSFER_DATA, sf[3] & 0xFF);
+            assertEquals(0x46, sf[4] & 0xFF);
+            assertEquals(0x05, sf[5] & 0xFF);
+        }
+    }
+
+    @Test
+    public void testCicsHostMessageHandling() {
+        // DFH0500 File transfer completed successfully
+        String successMsg = "DFH0500 File transfer completed successfully";
+        byte[] msgBytes = successMsg.getBytes(StandardCharsets.ISO_8859_1);
+        int totalPayloadLen = msgBytes.length + 5;
+
+        ByteArrayOutputStream sfOut = new ByteArrayOutputStream();
+        sfOut.write(0); sfOut.write(0);
+        sfOut.write(0xD0);
+        sfOut.write((FTConstants.TR_DATA_INSERT >> 8) & 0xFF);
+        sfOut.write(FTConstants.TR_DATA_INSERT & 0xFF);
+        sfOut.write((FTConstants.TR_NOT_COMPRESSED >> 8) & 0xFF);
+        sfOut.write(FTConstants.TR_NOT_COMPRESSED & 0xFF);
+        sfOut.write(FTConstants.TR_BEGIN_DATA);
+        sfOut.write((totalPayloadLen >> 8) & 0xFF);
+        sfOut.write(totalPayloadLen & 0xFF);
+        sfOut.write(msgBytes, 0, msgBytes.length);
+
+        byte[] insertData = sfOut.toByteArray();
+        int sfLen = insertData.length;
+        insertData[0] = (byte) ((sfLen >> 8) & 0xFF);
+        insertData[1] = (byte) (sfLen & 0xFF);
+
+        // Open message stream first
+        byte[] openReq = new byte[] {
+            0x00, 0x23, (byte) 0xD0, 0x00, 0x12, 0x01, 0x06, 0x01, 0x01, 0x04,
+            0x03, 0x0a, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x11, 0x01, 0x01,
+            0x00, 0x50, 0x05, 0x52, 0x03, (byte) 0xF0, 0x03, 0x09,
+            0x46, 0x54, 0x3A, 0x4D, 0x53, 0x47, 0x20
+        };
+        ftDft.processStructuredField(openReq, 0, openReq.length);
+
+        // Deliver success message
+        ftDft.processStructuredField(insertData, 0, insertData.length);
+        assertTrue(listener.completeCalled);
+        assertFalse(listener.abortCalled);
+    }
+
+    @Test
+    public void testResendInboundDataBufferToHost() {
+        assertFalse(ftDft.resendInboundDataBufferToHost());
+
+        byte[] payload = "TEST BUFFER".getBytes(StandardCharsets.UTF_8);
+        ftDft.sendDataPacket(payload);
+
+        assertEquals(1, inputProcessor.sentStructuredFields.size());
+        assertTrue(ftDft.resendInboundDataBufferToHost());
+        assertEquals(2, inputProcessor.sentStructuredFields.size());
+    }
 }

lib3270j/src/test/java/haus/nightmare/lib3270j/input/InputProcessorTest.java

@@ -453,7 +453,7 @@ public class InputProcessorTest {
     }
 
     @Test
-    public void testSendAidAlwaysSendsStandard3270StreamEvenIfGraphicCursorActive() {
+    public void testSendAidWhenGraphicCursorActiveSendsGraphicInputStructuredField() {
         screen.erase(false);
         screen.setCellFA(0, (byte) (FA_PRINTABLE | FA_MODIFY));
         screen.getCell(1).ec = (byte) 0xC1; // 'A'
@@ -462,6 +462,55 @@ public class InputProcessorTest {
         haus.nightmare.lib3270j.graphics.GraphicsPlane plane = new haus.nightmare.lib3270j.graphics.GraphicsPlane(800, 600);
         haus.nightmare.lib3270j.graphics.GocaDecoder goca = new haus.nightmare.lib3270j.graphics.GocaDecoder(plane);
         goca.setGraphicsCursorActive(true);
+        goca.setGraphicCursorPosition(100, -50);
+
+        java.util.concurrent.atomic.AtomicReference<byte[]> sent = new java.util.concurrent.atomic.AtomicReference<>();
+        InputProcessor input = new InputProcessor(screen, translator, null) {
+            @Override
+            protected void sendAidResponse(byte[] data) {
+                sent.set(data);
+            }
+        };
+        input.setGocaDecoder(goca);
+
+        input.sendAid(AID_ENTER);
+
+        byte[] result = sent.get();
+        assertNotNull(result);
+        // Format: AID_SF (1) + SF (56) + AID_ENTER (1) + Cursor Addr (2) + SBA (1) + Field Addr (2) + Data 'A' (1) = 64 bytes
+        assertEquals(64, result.length);
+        assertEquals((byte) AID_SF, result[0]);
+        assertEquals(0x00, result[1]);
+        assertEquals(0x34, result[2]); // SF len = 52
+        assertEquals(0x0F, result[3]);
+        assertEquals(0x0F, result[4]);
+        // Coordinates in SF at index 1 + 24 = 25
+        int gx = (result[25] << 8) | (result[26] & 0xFF);
+        int gy = (result[27] << 8) | (result[28] & 0xFF);
+        assertEquals(100, (short) gx);
+        assertEquals(-50, (short) gy);
+        // Keyboard AID trigger class constant (0x07) at index 1 + 31 = 32
+        assertEquals(0x07, result[32]);
+        assertEquals(0x07, result[34]);
+        assertEquals((byte) 0xFF, result[35]);
+        assertEquals((byte) AID_ENTER, result[36]);
+
+        // Trailing AID at index 57
+        assertEquals((byte) AID_ENTER, result[57]);
+        assertEquals((byte) ORDER_SBA, result[60]);
+        assertEquals((byte) 0xC1, result[63]);
+    }
+
+    @Test
+    public void testSendAidWhenGraphicCursorNotActiveSendsStandard3270Stream() {
+        screen.erase(false);
+        screen.setCellFA(0, (byte) (FA_PRINTABLE | FA_MODIFY));
+        screen.getCell(1).ec = (byte) 0xC1; // 'A'
+        screen.setCursorAddress(2);
+
+        haus.nightmare.lib3270j.graphics.GraphicsPlane plane = new haus.nightmare.lib3270j.graphics.GraphicsPlane(800, 600);
+        haus.nightmare.lib3270j.graphics.GocaDecoder goca = new haus.nightmare.lib3270j.graphics.GocaDecoder(plane);
+        goca.setGraphicsCursorActive(false);
 
         java.util.concurrent.atomic.AtomicReference<byte[]> sent = new java.util.concurrent.atomic.AtomicReference<>();
         InputProcessor input = new InputProcessor(screen, translator, null) {

lib3270j/src/test/java/haus/nightmare/lib3270j/nvt/NvtProcessorPhase9Test.java

@@ -0,0 +1,384 @@
+package haus.nightmare.lib3270j.nvt;
+
+import haus.nightmare.lib3270j.TerminalModel;
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.atomic.AtomicReference;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Comprehensive Unit Tests for Phase 9: NVT Mode (VT100 / VT220 / VT320 / ANSI Emulation).
+ */
+public class NvtProcessorPhase9Test {
+
+    private ScreenBuffer screen;
+    private EbcdicTranslator translator;
+    private NvtProcessor processor;
+    private ByteArrayOutputStream output;
+
+    @BeforeEach
+    public void setUp() {
+        translator = new EbcdicTranslator();
+        screen = new ScreenBuffer(TerminalModel.IBM_3279_2, translator); // 24x80
+        processor = new NvtProcessor(screen, translator);
+        output = new ByteArrayOutputStream();
+        processor.setOutputSender(bytes -> output.write(bytes, 0, bytes.length));
+    }
+
+    private void feed(String s) {
+        byte[] b = s.getBytes(StandardCharsets.US_ASCII);
+        processor.processNVTData(b, 0, b.length);
+    }
+
+    private void feedUtf8(String s) {
+        byte[] b = s.getBytes(StandardCharsets.UTF_8);
+        processor.processNVTData(b, 0, b.length);
+    }
+
+    @Test
+    public void testDeviceStatusReportExtendedDSR() {
+        output.reset();
+        // DSR 5 (Status OK)
+        feed("\u001B[5n");
+        assertEquals("\u001B[0n", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DSR 6 (Cursor Position Report) -> at row 10, col 20 (0-indexed: 9, 19)
+        feed("\u001B[10;20H");
+        feed("\u001B[6n");
+        assertEquals("\u001B[10;20R", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DSR ?6 (DECXCPR Extended Cursor Position Report)
+        feed("\u001B[?6n");
+        assertEquals("\u001B[?10;20;1R", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DSR ?15 (Printer status)
+        feed("\u001B[?15n");
+        assertEquals("\u001B[?13n", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DSR ?26 (Keyboard dialect status)
+        feed("\u001B[?26n");
+        assertEquals("\u001B[?27;1n", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DSR ?62 / ?63 (Macro/Memory Checksum)
+        feed("\u001B[?62n");
+        assertEquals("\u001B[?63;0n", output.toString(StandardCharsets.US_ASCII));
+    }
+
+    @Test
+    public void testDeviceAttributesPrimaryAndSecondaryDA() {
+        output.reset();
+        // Default Primary DA (VT100 with AVO): ESC [ c
+        feed("\u001B[c");
+        assertEquals("\u001B[?1;2c", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // Configure VT220 Primary DA
+        processor.setPrimaryDeviceAttributes("\u001B[?62;1;2;6;7;8;9c");
+        feed("\u001B[c");
+        assertEquals("\u001B[?62;1;2;6;7;8;9c", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        feed("\u001B[0c");
+        assertEquals("\u001B[?62;1;2;6;7;8;9c", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // Secondary DA: ESC [ > c
+        feed("\u001B[>c");
+        assertEquals("\u001B[>1;10;0c", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // Secondary DA: ESC [ > 0 c
+        feed("\u001B[>0c");
+        assertEquals("\u001B[>1;10;0c", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DECREQTPARM: ESC [ 1 x
+        feed("\u001B[1x");
+        assertEquals("\u001B[3;1;1;120;120;1;0x", output.toString(StandardCharsets.US_ASCII));
+
+        output.reset();
+        // DECREQTPARM: ESC [ 0 x
+        feed("\u001B[0x");
+        assertEquals("\u001B[2;1;1;120;120;1;0x", output.toString(StandardCharsets.US_ASCII));
+    }
+
+    @Test
+    public void testDecSoftTerminalResetDECSTR() {
+        // Set non-standard modes
+        processor.setCursorVisible(false);
+        processor.setApplicationKeypad(true);
+        processor.setApplicationCursorKeys(true);
+        processor.setOriginMode(true);
+        processor.setAutoWrap(false);
+        processor.setInsertMode(true);
+
+        // Set scroll region 3..10
+        feed("\u001B[3;10r");
+
+        // Soft Reset: ESC [ ! p
+        feed("\u001B[!p");
+
+        assertTrue(processor.isCursorVisible());
+        assertFalse(processor.isApplicationKeypad());
+        assertFalse(processor.isApplicationCursorKeys());
+        assertFalse(processor.isOriginMode());
+        assertTrue(processor.isAutoWrap());
+        assertFalse(processor.isInsertMode());
+    }
+
+    @Test
+    public void testOriginModeDECOM() {
+        // Set scroll region lines 5..15: ESC [ 5 ; 15 r
+        feed("\u001B[5;15r");
+
+        // Enable Origin Mode: ESC [ ? 6 h
+        feed("\u001B[?6h");
+        assertTrue(processor.isOriginMode());
+
+        // Move to line 1, col 1 in origin mode -> corresponds to row 5 (0-indexed: 4), col 0
+        feed("\u001B[1;1H");
+        assertEquals(4 * 80, screen.getCursorAddress());
+
+        // Move to line 3, col 10 in origin mode -> corresponds to row 7 (0-indexed: 6), col 9
+        feed("\u001B[3;10H");
+        assertEquals(6 * 80 + 9, screen.getCursorAddress());
+
+        // Check DSR extended CPR in origin mode: should report row 3, col 10 relative to top margin
+        output.reset();
+        feed("\u001B[?6n");
+        assertEquals("\u001B[?3;10;1R", output.toString(StandardCharsets.US_ASCII));
+
+        // Disable Origin Mode: ESC [ ? 6 l
+        feed("\u001B[?6l");
+        assertFalse(processor.isOriginMode());
+
+        // Move to line 1, col 1 in absolute mode -> row 0, col 0
+        feed("\u001B[1;1H");
+        assertEquals(0, screen.getCursorAddress());
+    }
+
+    @Test
+    public void testCharacterSetSCSandShifts() {
+        // Designate G0 as UK (ESC ( A), G1 as Line Drawing (ESC ) 0), G2 as German (ESC * K)
+        feed("\u001B(A\u001B)0\u001B*K");
+        assertEquals('A', processor.getG0Charset());
+        assertEquals('0', processor.getG1Charset());
+        assertEquals('K', processor.getG2Charset());
+
+        // In G0 (UK): '#' maps to '£'
+        feed("\u001B[1;1H#");
+        assertEquals('£', screen.getCell(0).ucs4);
+
+        // Shift-Out (0x0E -> G1 Line Drawing)
+        processor.processNVTData(new byte[] { 0x0E, (byte) 'q' }, 0, 2);
+        assertEquals('─', screen.getCell(1).ucs4);
+
+        // Shift-In (0x0F -> G0 UK)
+        processor.processNVTData(new byte[] { 0x0F, (byte) '#' }, 0, 2);
+        assertEquals('£', screen.getCell(2).ucs4);
+
+        // Single Shift SS2 (ESC N -> G2 German for next character only)
+        // In German: '@' -> '§', '{' -> 'ä'
+        feed("\u001BN@#");
+        assertEquals('§', screen.getCell(3).ucs4); // Single shift applied to '@'
+        assertEquals('£', screen.getCell(4).ucs4); // Returned to G0 UK for '#'
+
+        // Locking Shift LS2 (ESC n -> G2 German active)
+        feed("\u001Bn{|}~");
+        assertEquals('ä', screen.getCell(5).ucs4);
+        assertEquals('ö', screen.getCell(6).ucs4);
+        assertEquals('ü', screen.getCell(7).ucs4);
+        assertEquals('ß', screen.getCell(8).ucs4);
+    }
+
+    @Test
+    public void testOscWindowTitleAndIcon() {
+        AtomicReference<String> titleRef = new AtomicReference<>("");
+        processor.addTitleListener(titleRef::set);
+
+        // OSC 0 (BEL terminated): ESC ] 0 ; Main Terminal Window BEL
+        feedUtf8("\u001B]0;Main Terminal Window\u0007");
+
+        assertEquals("Main Terminal Window", processor.getTerminalTitle());
+        assertEquals("Main Terminal Window", titleRef.get());
+
+        // OSC 2 (ST terminated): ESC ] 2 ; IBM Host Session ESC \
+        feedUtf8("\u001B]2;IBM Host Session\u001B\\");
+
+        assertEquals("IBM Host Session", processor.getTerminalTitle());
+        assertEquals("IBM Host Session", titleRef.get());
+    }
+
+    @Test
+    public void testOsc52ClipboardReadAndWrite() {
+        AtomicReference<String> clipboardStorage = new AtomicReference<>("Initial Clipboard");
+        processor.setClipboardHandler(new NvtProcessor.ClipboardHandler() {
+            @Override
+            public String getClipboardText() {
+                return clipboardStorage.get();
+            }
+
+            @Override
+            public void setClipboardText(String text) {
+                clipboardStorage.set(text);
+            }
+        });
+
+        // OSC 52 Write: Base64 of "Hello from Host" is "SGVsbG8gZnJvbSBIb3N0"
+        feed("\u001B]52;c;SGVsbG8gZnJvbSBIb3N0\u0007");
+
+        assertEquals("Hello from Host", clipboardStorage.get());
+
+        // OSC 52 Read Query: ESC ] 52 ; c ; ? BEL
+        output.reset();
+        feed("\u001B]52;c;?\u0007");
+
+        String expectedB64 = java.util.Base64.getEncoder().encodeToString("Hello from Host".getBytes(StandardCharsets.UTF_8));
+        String response = output.toString(StandardCharsets.US_ASCII);
+        assertTrue(response.contains(expectedB64));
+        assertTrue(response.startsWith("\u001B]52;c;"));
+    }
+
+    @Test
+    public void testApplicationKeypadModeDECKPAM() {
+        assertFalse(processor.isApplicationKeypad());
+
+        // Enable Keypad Application Mode: ESC =
+        feed("\u001B=");
+        assertTrue(processor.isApplicationKeypad());
+
+        // Test keypad mapping
+        assertEquals("\u001BOp", processor.mapKeypadKey(0x60)); // NUMPAD0
+        assertEquals("\u001BOq", processor.mapKeypadKey(0x61)); // NUMPAD1
+        assertEquals("\u001BOr", processor.mapKeypadKey(0x62)); // NUMPAD2
+        assertEquals("\u001BOs", processor.mapKeypadKey(0x63)); // NUMPAD3
+        assertEquals("\u001BOt", processor.mapKeypadKey(0x64)); // NUMPAD4
+        assertEquals("\u001BOu", processor.mapKeypadKey(0x65)); // NUMPAD5
+        assertEquals("\u001BOv", processor.mapKeypadKey(0x66)); // NUMPAD6
+        assertEquals("\u001BOw", processor.mapKeypadKey(0x67)); // NUMPAD7
+        assertEquals("\u001BOx", processor.mapKeypadKey(0x68)); // NUMPAD8
+        assertEquals("\u001BOy", processor.mapKeypadKey(0x69)); // NUMPAD9
+        assertEquals("\u001BOm", processor.mapKeypadKey(0x6D)); // MINUS
+        assertEquals("\u001BOn", processor.mapKeypadKey(0x6E)); // DECIMAL
+        assertEquals("\u001BOM", processor.mapKeypadKey(0x0A)); // ENTER
+
+        byte[] bytes = processor.processApplicationKeypad(0x60);
+        assertNotNull(bytes);
+        assertEquals("\u001BOp", new String(bytes, StandardCharsets.US_ASCII));
+
+        // Enable Keypad Numeric Mode: ESC >
+        feed("\u001B>");
+        assertFalse(processor.isApplicationKeypad());
+        assertNull(processor.mapKeypadKey(0x60));
+        assertNull(processor.processApplicationKeypad(0x60));
+    }
+
+    @Test
+    public void testApplicationCursorKeysModeDECCKM() {
+        assertFalse(processor.isApplicationCursorKeys());
+        assertEquals("\u001B[A", processor.mapKey(0x26, '\0', false, false, false)); // VK_UP normal
+        assertEquals("\u001B[B", processor.mapKey(0x28, '\0', false, false, false)); // VK_DOWN normal
+        assertEquals("\u001B[C", processor.mapKey(0x27, '\0', false, false, false)); // VK_RIGHT normal
+        assertEquals("\u001B[D", processor.mapKey(0x25, '\0', false, false, false)); // VK_LEFT normal
+
+        // Enable Application Cursor Keys: ESC [ ? 1 h
+        feed("\u001B[?1h");
+        assertTrue(processor.isApplicationCursorKeys());
+
+        assertEquals("\u001BOA", processor.mapKey(0x26, '\0', false, false, false)); // VK_UP application
+        assertEquals("\u001BOB", processor.mapKey(0x28, '\0', false, false, false)); // VK_DOWN application
+        assertEquals("\u001BOC", processor.mapKey(0x27, '\0', false, false, false)); // VK_RIGHT application
+        assertEquals("\u001BOD", processor.mapKey(0x25, '\0', false, false, false)); // VK_LEFT application
+
+        // Disable Application Cursor Keys: ESC [ ? 1 l
+        feed("\u001B[?1l");
+        assertFalse(processor.isApplicationCursorKeys());
+        assertEquals("\u001B[A", processor.mapKey(0x26, '\0', false, false, false));
+    }
+
+    @Test
+    public void testFunctionAndEditingKeyMapping() {
+        // Function keys F1..F4
+        assertEquals("\u001BOP", processor.mapKey(0x70, '\0', false, false, false)); // F1
+        assertEquals("\u001BOQ", processor.mapKey(0x71, '\0', false, false, false)); // F2
+        assertEquals("\u001BOR", processor.mapKey(0x72, '\0', false, false, false)); // F3
+        assertEquals("\u001BOS", processor.mapKey(0x73, '\0', false, false, false)); // F4
+
+        // Function keys F5..F12
+        assertEquals("\u001B[15~", processor.mapKey(0x74, '\0', false, false, false)); // F5
+        assertEquals("\u001B[17~", processor.mapKey(0x75, '\0', false, false, false)); // F6
+        assertEquals("\u001B[24~", processor.mapKey(0x7B, '\0', false, false, false)); // F12
+
+        // Editing keys
+        assertEquals("\u001B[2~", processor.mapKey(0x9B, '\0', false, false, false)); // Insert
+        assertEquals("\u001B[3~", processor.mapKey(0x7F, '\0', false, false, false)); // Delete
+        assertEquals("\u001B[1~", processor.mapKey(0x24, '\0', false, false, false)); // Home
+        assertEquals("\u001B[4~", processor.mapKey(0x23, '\0', false, false, false)); // End
+        assertEquals("\u001B[5~", processor.mapKey(0x21, '\0', false, false, false)); // PageUp
+        assertEquals("\u001B[6~", processor.mapKey(0x22, '\0', false, false, false)); // PageDown
+    }
+
+    @Test
+    public void testInsertModeAndNewLineMode() throws IOException {
+        // Line Feed in standard mode: cursor moves down without returning to col 0
+        processor.setNewLineMode(false);
+        feed("\u001B[1;10H\n");
+        assertEquals(1 * 80 + 9, screen.getCursorAddress()); // Row 2, Col 10
+
+        // Enable New Line Mode: ESC [ 20 h
+        feed("\u001B[20h");
+        assertTrue(processor.isNewLineMode());
+
+        feed("\u001B[1;10H\n");
+        assertEquals(1 * 80, screen.getCursorAddress()); // Row 2, Col 0 (CR + LF)
+
+        // Insert Mode: ESC [ 4 h
+        feed("\u001B[1;1HAC");
+        feed("\u001B[1;2H"); // Move cursor between A and C
+        feed("\u001B[4h"); // Enable Insert Mode
+        assertTrue(processor.isInsertMode());
+
+        feed("B");
+        assertEquals('A', screen.getCell(0).ucs4);
+        assertEquals('B', screen.getCell(1).ucs4);
+        assertEquals('C', screen.getCell(2).ucs4);
+
+        // Reset Insert Mode: ESC [ 4 l
+        feed("\u001B[4l");
+        assertFalse(processor.isInsertMode());
+    }
+
+    @Test
+    public void testAutoWrapAndColumnMode() {
+        // Disable Auto Wrap: ESC [ ? 7 l
+        feed("\u001B[?7l");
+        assertFalse(processor.isAutoWrap());
+
+        // Move to col 79 (0-indexed: 78) on line 1, and write 5 characters
+        feed("\u001B[1;79H12345");
+        // Characters should truncate / overwrite at margin (col 79) and not wrap to next row
+        assertEquals('5', screen.getCell(79).ucs4);
+        assertEquals(79, screen.getCursorAddress());
+
+        // Enable Auto Wrap: ESC [ ? 7 h
+        feed("\u001B[?7h");
+        assertTrue(processor.isAutoWrap());
+
+        // 132-Column Mode switch: ESC [ ? 3 h (clears screen)
+        feed("\u001B[?3h");
+        assertEquals(0, screen.getCursorAddress());
+        assertEquals(0, screen.getCell(0).ucs4);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/printer/PD3270PDTPhase7Test.java

@@ -0,0 +1,136 @@
+package haus.nightmare.lib3270j.printer;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Tests for Phase 7 Printer Definition Table (PDT) profiles, control sequence generation,
+ * character mappings, and GDDM host escapes in PD3270.
+ */
+public class PD3270PDTPhase7Test {
+
+    private PrinterConfig config;
+    private PD3270 pd;
+
+    @BeforeEach
+    public void setUp() {
+        config = new PrinterConfig("localhost", 23);
+        pd = new PD3270(config);
+        pd.openPrinter(null);
+    }
+
+    @Test
+    public void testBuiltinPDTPresets() {
+        // Plain Text
+        PrinterDefinitionTable textPdt = PrinterDefinitionTable.createPlainTextPDT();
+        assertEquals("PLAIN_TEXT", textPdt.getName());
+        assertTrue(textPdt.hasControlCode(PrinterDefinitionTable.CMD_PAGE_FEED));
+
+        // HP PCL 5
+        PrinterDefinitionTable pcl5 = PrinterDefinitionTable.createPcl5PDT();
+        assertEquals("PCL_5", pcl5.getName());
+        assertTrue(pcl5.hasControlCode(PrinterDefinitionTable.CMD_START_BOLD));
+        assertArrayEquals("\033(s3B".getBytes(), pcl5.getControlCode(PrinterDefinitionTable.CMD_START_BOLD));
+
+        // Epson ESC/P
+        PrinterDefinitionTable escp = PrinterDefinitionTable.createEpsonEscPPDT();
+        assertEquals("EPSON_ESC_P", escp.getName());
+        assertTrue(escp.hasControlCode(PrinterDefinitionTable.CMD_START_BOLD));
+        assertArrayEquals("\033E".getBytes(), escp.getControlCode(PrinterDefinitionTable.CMD_START_BOLD));
+
+        // PostScript
+        PrinterDefinitionTable ps = PrinterDefinitionTable.createPostScriptPDT();
+        assertEquals("POSTSCRIPT", ps.getName());
+        assertTrue(ps.hasControlCode(PrinterDefinitionTable.CMD_START_JOB));
+    }
+
+    @Test
+    public void testPcl5ControlCodeGeneration() {
+        pd.setPDT(PrinterDefinitionTable.createPcl5PDT());
+
+        pd.startJob();
+        pd.setBold(true);
+        pd.print("BOLD TEXT");
+        pd.setBold(false);
+        pd.setUnderline(true);
+        pd.print("UNDERLINED");
+        pd.setUnderline(false);
+        pd.setItalic(true);
+        pd.print("ITALIC");
+        pd.setItalic(false);
+        pd.setCPI(12);
+        pd.setLPI(8);
+        pd.formFeed();
+        pd.endJob();
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("\033E"));     // Reset / start job
+        assertTrue(captured.contains("\033(s3B")); // Bold on
+        assertTrue(captured.contains("\033(s0B")); // Bold off
+        assertTrue(captured.contains("\033&d0D")); // Underline on
+        assertTrue(captured.contains("\033(s1S")); // Italic on
+        assertTrue(captured.contains("\033&k2S")); // 12 CPI
+        assertTrue(captured.contains("\033&l8D")); // 8 LPI
+        assertTrue(captured.contains("\f"));       // Page feed
+    }
+
+    @Test
+    public void testEpsonEscPControlCodeGeneration() {
+        pd.setPDT(PrinterDefinitionTable.createEpsonEscPPDT());
+
+        pd.startJob();
+        pd.setDoubleStrike(true);
+        pd.print("DOUBLE STRIKE");
+        pd.setDoubleStrike(false);
+        pd.setDoubleWidth(true);
+        pd.print("DOUBLE WIDTH");
+        pd.setDoubleWidth(false);
+        pd.setSuperscript(true);
+        pd.print("SUPER");
+        pd.setSuperscript(false);
+        pd.setSubscript(true);
+        pd.print("SUB");
+        pd.setSubscript(false);
+        pd.setCPI(10);
+        pd.setLPI(6);
+        pd.endJob();
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("\033@"));  // Init
+        assertTrue(captured.contains("\033G"));  // Double strike on
+        assertTrue(captured.contains("\033H"));  // Double strike off
+        assertTrue(captured.contains("\033W1")); // Double width on
+        assertTrue(captured.contains("\033W0")); // Double width off
+        assertTrue(captured.contains("\033S0")); // Superscript on
+        assertTrue(captured.contains("\033S1")); // Subscript on
+        assertTrue(captured.contains("\033P"));  // 10 CPI
+        assertTrue(captured.contains("\0332"));  // 6 LPI
+    }
+
+    @Test
+    public void testCustomPDTWithCharacterOverrides() {
+        PrinterDefinitionTable customPdt = new PrinterDefinitionTable("CUSTOM", "Custom Test Table");
+        customPdt.setControlCode("TEST_CMD", "[CMD]");
+        customPdt.setCharOverride('@', "[AT]".getBytes());
+
+        pd.setPDT(customPdt);
+        pd.writeControlCode("TEST_CMD");
+        pd.print('@');
+        pd.print("user@ibm.com");
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("[CMD]"));
+        assertTrue(captured.contains("[AT]"));
+    }
+
+    @Test
+    public void testGddmHostPrintEscapePassthrough() {
+        byte[] gddmEscape = new byte[]{0x1B, '&', 'a', '1', '0', '0', 'V'};
+        pd.processGddmEscape(gddmEscape, 0, gddmEscape.length);
+
+        byte[] captured = pd.getCapturedBytes();
+        assertTrue(captured.length >= gddmEscape.length);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/printer/PrintPS3270Phase7Test.java

@@ -0,0 +1,100 @@
+package haus.nightmare.lib3270j.printer;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import haus.nightmare.lib3270j.protocol.DS3270Constants;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Tests for Phase 7 PrintPS3270 EOJ completion, auto-flush timer, and 3270 printer data stream formatting.
+ */
+public class PrintPS3270Phase7Test {
+
+    private PrinterConfig config;
+    private PD3270 pd;
+    private EbcdicTranslator translator;
+    private PrintPS3270 printPs;
+
+    @BeforeEach
+    public void setUp() {
+        config = new PrinterConfig("localhost", 23);
+        config.setAutoFlushTimeoutMs(150); // Fast timeout for testing
+        pd = new PD3270(config);
+        translator = new EbcdicTranslator("037");
+        printPs = new PrintPS3270(config, pd, translator);
+        pd.openPrinter(null);
+    }
+
+    @Test
+    public void testProcessPrintCompleteEOJ() {
+        config.setFormFeedAtEoj(true);
+        config.setAutoFlushOnEoj(true);
+
+        byte[] ebcText = translator.stringToEbcdic("LU3 TEST PAGE");
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(DS3270Constants.CMD_WRITE);
+        stream.write(0x00); // WCC (Start Print = false)
+        stream.write(PrinterConstants.ORDER_SBA);
+        stream.write(0x40); // Row 0 Col 0
+        stream.write(0x40);
+        stream.write(ebcText, 0, ebcText.length);
+
+        printPs.process3270PrintDS(stream.toByteArray(), 0, stream.size());
+
+        // Process EOJ completion
+        printPs.processPrintComplete();
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("LU3 TEST PAGE"));
+        assertEquals(1, pd.getPageCount());
+    }
+
+    @Test
+    public void testAutoFlushTimerTriggersOnIdle() throws InterruptedException {
+        byte[] ebcText = translator.stringToEbcdic("AUTO FLUSH DATA");
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(DS3270Constants.CMD_WRITE);
+        stream.write(0x00); // WCC with Start Print = 0
+        stream.write(PrinterConstants.ORDER_SBA);
+        stream.write(0x40);
+        stream.write(0x40);
+        stream.write(ebcText, 0, ebcText.length);
+
+        printPs.process3270PrintDS(stream.toByteArray(), 0, stream.size());
+
+        // Wait for auto-flush timer (150ms) to trigger
+        Thread.sleep(300);
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("AUTO FLUSH DATA"));
+    }
+
+    @Test
+    public void testStartPrintBitImmediateFlush() {
+        byte[] ebcText = translator.stringToEbcdic("IMMEDIATE PRINT");
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(DS3270Constants.CMD_WRITE);
+        stream.write(PrinterConstants.WCC_START_PRINT_BIT); // WCC with Start Print = 1
+        stream.write(PrinterConstants.ORDER_SBA);
+        stream.write(0x40);
+        stream.write(0x40);
+        stream.write(ebcText, 0, ebcText.length);
+
+        printPs.process3270PrintDS(stream.toByteArray(), 0, stream.size());
+
+        String captured = pd.getCapturedText();
+        assertTrue(captured.contains("IMMEDIATE PRINT"));
+    }
+
+    @Test
+    public void testCancelAutoFlush() {
+        printPs.scheduleAutoFlush();
+        printPs.cancelAutoFlush();
+        // Cancel should succeed without exception
+        assertNotNull(printPs);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/printer/PrintSCS3270Phase7Test.java

@@ -0,0 +1,238 @@
+package haus.nightmare.lib3270j.printer;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Comprehensive tests for Phase 7 SCS (SNA Character String) 28-command protocol engine,
+ * Enhanced Highlights, Vertical Channel Select (VCS), Graphic Error Action (GEA),
+ * Index Return (IRS), and Transparent data (TRN).
+ */
+public class PrintSCS3270Phase7Test {
+
+    private PrinterConfig config;
+    private PD3270 pd;
+    private EbcdicTranslator translator;
+    private PrintSCS3270 scs;
+
+    @BeforeEach
+    public void setUp() {
+        config = new PrinterConfig("localhost", 23);
+        pd = new PD3270(config);
+        translator = new EbcdicTranslator("037");
+        scs = new PrintSCS3270(config, pd, translator);
+        pd.openPrinter(null); // In-memory capture
+    }
+
+    @Test
+    public void testAll28SCSCommandsDispatch() {
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+
+        // 1. NUL (0x00) & NOP (0x03)
+        stream.write(PrinterConstants.SCS_NUL);
+        stream.write(PrinterConstants.SCS_NOP);
+
+        // 2. Text "A" (0xC1 in Cp037)
+        stream.write(0xC1);
+
+        // 3. BS (0x16) & NBS (0x36)
+        stream.write(PrinterConstants.SCS_BS);
+        stream.write(PrinterConstants.SCS_NBS);
+
+        // 4. SP (0x40) & RSP (0x41)
+        stream.write(PrinterConstants.SCS_SP);
+        stream.write(PrinterConstants.SCS_RSP);
+
+        // 5. HT (0x05)
+        stream.write(PrinterConstants.SCS_HT);
+
+        // 6. Text "B" (0xC2)
+        stream.write(0xC2);
+
+        // 7. CR (0x0D) & RCR (0x07)
+        stream.write(PrinterConstants.SCS_CR);
+        stream.write(PrinterConstants.SCS_RCR);
+
+        // 8. LF (0x25) & NL (0x15) & RNL (0x06)
+        stream.write(PrinterConstants.SCS_LF);
+        stream.write(PrinterConstants.SCS_NL);
+        stream.write(PrinterConstants.SCS_RNLS);
+
+        // 9. VT (0x0B)
+        stream.write(PrinterConstants.SCS_VT);
+
+        // 10. SO (0x0E) & SI (0x0F)
+        stream.write(PrinterConstants.SCS_SO);
+        stream.write(PrinterConstants.SCS_SI);
+
+        // 11. INP (0x24) & ENP (0x14)
+        stream.write(PrinterConstants.SCS_INP);
+        stream.write(0xC3); // Should be ignored when presentation inhibited
+        stream.write(PrinterConstants.SCS_ENP);
+        stream.write(0xC3); // 'C'
+
+        // 12. BEL (0x2F) & POC (0x17)
+        stream.write(PrinterConstants.SCS_BEL);
+        stream.write(PrinterConstants.SCS_POC);
+
+        // 13. IRS (0x33)
+        stream.write(PrinterConstants.SCS_IRS);
+
+        // 14. SUB (0x3F)
+        stream.write(PrinterConstants.SCS_SUB);
+
+        // 15. FF (0x0C)
+        stream.write(PrinterConstants.SCS_FF);
+
+        byte[] payload = stream.toByteArray();
+        scs.processRecord(payload);
+
+        String captured = pd.getCapturedText();
+        assertNotNull(captured);
+        assertTrue(captured.contains("C"));
+        assertTrue(captured.contains("?"));
+        assertTrue(pd.getPageCount() >= 1);
+    }
+
+    @Test
+    public void testProcessTRNRawBytePassthrough() {
+        // TRN order: 0x35 <len> <rawBytes>
+        byte[] rawPrinterCodes = new byte[]{0x1B, 0x45, 'R', 'A', 'W', 0x1B, 0x46};
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(PrinterConstants.SCS_TRN);
+        stream.write(rawPrinterCodes.length);
+        stream.write(rawPrinterCodes, 0, rawPrinterCodes.length);
+
+        scs.processHostData(stream.toByteArray(), 0, stream.size());
+
+        byte[] captured = pd.getCapturedBytes();
+        assertTrue(captured.length >= rawPrinterCodes.length);
+
+        // Also test direct processTRN method
+        byte[] directBytes = new byte[]{0x1B, 0x2A, 0x62, 0x30, 0x57};
+        scs.processTRN(directBytes);
+        assertTrue(pd.getByteCount() >= rawPrinterCodes.length + directBytes.length);
+    }
+
+    @Test
+    public void testProcessVCSWithChannelTape() {
+        // Setup channel tape: Channel 2 = line 15, Channel 3 = line 30
+        scs.setChannelLine(2, 15);
+        scs.setChannelLine(3, 30);
+        assertEquals(15, scs.getChannelLine(2));
+        assertEquals(30, scs.getChannelLine(3));
+
+        // Start at line 1
+        assertEquals(1, scs.getCurrentRow());
+
+        // Process VCS for Channel 2
+        scs.processVCS(2);
+        assertEquals(15, scs.getCurrentRow());
+
+        // Process VCS for Channel 3
+        scs.processVCS(3);
+        assertEquals(30, scs.getCurrentRow());
+
+        // Process VCS for Channel 1 (line 1, which is < 30, so forms feed to next page)
+        int initialPages = pd.getPageCount();
+        scs.processVCS(1);
+        assertEquals(1, scs.getCurrentRow());
+        assertEquals(initialPages + 1, pd.getPageCount());
+    }
+
+    @Test
+    public void testProcessGEAGraphicErrorActions() {
+        // 1. GEA Default: replacement '?'
+        config.setGraphicErrorAction(PrinterConstants.GEA_NO_SUBSTITUTION);
+        scs.processSUB();
+        scs.flushLineBuffer();
+        assertTrue(pd.getCapturedText().contains("?"));
+
+        // 2. GEA Substitute specified character ('#')
+        pd.resetCapture();
+        scs.processGEA(PrinterConstants.GEA_SUBSTITUTE_SPECIFIED, '#');
+        scs.processSUB();
+        scs.flushLineBuffer();
+        assertTrue(pd.getCapturedText().contains("#"));
+
+        // 3. GEA 0x2B 0xC8 order
+        pd.resetCapture();
+        byte[] geaOrder = new byte[]{
+            (byte) PrinterConstants.SCS_PREFIX_2B,
+            (byte) PrinterConstants.SCS_GEA,
+            0x02,
+            PrinterConstants.GEA_SUBSTITUTE_SPECIFIED,
+            (byte) '*'
+        };
+        scs.processHostData(geaOrder, 0, geaOrder.length);
+        scs.processSUB();
+        scs.flushLineBuffer();
+        assertTrue(pd.getCapturedText().contains("*"));
+    }
+
+    @Test
+    public void testEnhancedHighlightAttributes() {
+        // Set PDT to PCL5 so we can verify escape sequences generated
+        PrinterDefinitionTable pcl5 = PrinterDefinitionTable.createPcl5PDT();
+        pd.setPDT(pcl5);
+
+        // Test Emphasized (Bold)
+        scs.setEnhancedHighlight(PrinterConstants.SEAC_EMPHASIZED);
+        assertEquals(PrinterConstants.SEAC_EMPHASIZED, scs.getActiveHighlight());
+        String text = pd.getCapturedText();
+        assertTrue(text.contains("\033(s3B")); // PCL Bold on
+
+        // Test Italic
+        pd.resetCapture();
+        scs.setEnhancedHighlight(PrinterConstants.SEAC_ITALIC);
+        assertEquals(PrinterConstants.SEAC_ITALIC, scs.getActiveHighlight());
+        text = pd.getCapturedText();
+        assertTrue(text.contains("\033(s1S")); // PCL Italic on
+
+        // Test Underline
+        pd.resetCapture();
+        scs.setEnhancedHighlight(PrinterConstants.SEAC_UNDERLINE);
+        assertEquals(PrinterConstants.SEAC_UNDERLINE, scs.getActiveHighlight());
+        text = pd.getCapturedText();
+        assertTrue(text.contains("\033&d0D")); // PCL Underline on
+
+        // Test Double-Width
+        pd.resetCapture();
+        scs.startDoubleWidthCharacters();
+        assertTrue(scs.isDoubleWidth());
+        text = pd.getCapturedText();
+        assertTrue(text.contains("\033&k1W"));
+
+        scs.endDoubleWidthCharacters();
+        assertFalse(scs.isDoubleWidth());
+    }
+
+    @Test
+    public void testExplicitSCSNamedMethods() {
+        scs.processNL();
+        scs.processCR();
+        scs.processLF();
+        scs.processFF();
+        scs.processBS();
+        scs.processNBS();
+        scs.processHT();
+        scs.processVT();
+        scs.processRNL();
+        scs.processRCR();
+        scs.processENP();
+        scs.processINP();
+        scs.processBEL();
+        scs.processIRS();
+        scs.processSO();
+        scs.processSI();
+        scs.processSCS(1);
+        scs.processPOC(new byte[]{0x01});
+
+        assertTrue(pd.getPageCount() >= 1);
+    }
+}

lib3270j/src/test/java/haus/nightmare/lib3270j/printer/Telnet3270EPPhase7FullTest.java

@@ -0,0 +1,159 @@
+package haus.nightmare.lib3270j.printer;
+
+import haus.nightmare.lib3270j.charset.EbcdicTranslator;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * End-to-end tests for Phase 7 Telnet3270EP printer protocol engine, LU1 and LU3 sessions,
+ * response headers, EOJ handling, listeners, and Telnet3270EPClient integration.
+ */
+public class Telnet3270EPPhase7FullTest {
+
+    private PrinterConfig config;
+    private PD3270 pd;
+    private EbcdicTranslator translator;
+    private Telnet3270EP ep;
+    private Telnet3270EPClient client;
+
+    @BeforeEach
+    public void setUp() {
+        config = new PrinterConfig("localhost", 23, "PRT01");
+        config.setAssociatedDisplayLuName("DSP01");
+        config.setFormFeedAtEoj(true);
+        config.setAutoFlushOnEoj(true);
+
+        pd = new PD3270(config);
+        translator = new EbcdicTranslator("037");
+        ep = new Telnet3270EP(config, pd, translator);
+        client = new Telnet3270EPClient(config);
+        pd.openPrinter(null);
+    }
+
+    @Test
+    public void testLU1SCSPrintSessionFlow() {
+        // 1. Process BIND for LU Type 1 (SCS)
+        ep.process_bind(PrinterConstants.LU_TYPE_1_SCS);
+        assertEquals(PrinterConstants.LU_TYPE_1_SCS, ep.getActiveLuType());
+        assertEquals(PrinterConstants.STATUS_PRINTER_READY, ep.getStatusCode());
+
+        // 2. Feed SCS print records
+        byte[] hello = translator.stringToEbcdic("REPORT TITLE");
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(hello, 0, hello.length);
+        stream.write(PrinterConstants.SCS_NL);
+        byte[] data = translator.stringToEbcdic("LINE ITEM 1");
+        stream.write(data, 0, data.length);
+        stream.write(PrinterConstants.SCS_NL);
+
+        byte[] payload = stream.toByteArray();
+        ep.getSCS().processHostData(payload, 0, payload.length);
+
+        // 3. EOJ
+        ep.sendEOJ(true);
+
+        String text = pd.getCapturedText();
+        assertTrue(text.contains("REPORT TITLE"));
+        assertTrue(text.contains("LINE ITEM 1"));
+        assertEquals(1, pd.getPageCount());
+        assertEquals(PrinterConstants.STATUS_JOB_COMPLETE, ep.getStatusCode());
+    }
+
+    @Test
+    public void testLU33270PrintSessionFlow() {
+        // 1. Process BIND for LU Type 3 (3270 Data Stream)
+        ep.process_bind(PrinterConstants.LU_TYPE_3_DS);
+        assertEquals(PrinterConstants.LU_TYPE_3_DS, ep.getActiveLuType());
+
+        // 2. Feed 3270 print DS
+        byte[] hello = translator.stringToEbcdic("LU3 REPORT CONTENT");
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        stream.write(0xF5); // ERASE WRITE
+        stream.write(0x00); // WCC
+        stream.write(PrinterConstants.ORDER_SBA);
+        stream.write(0x40);
+        stream.write(0x40);
+        stream.write(hello, 0, hello.length);
+
+        byte[] payload = stream.toByteArray();
+        ep.getPrintPS().process3270PrintDS(payload, 0, payload.length);
+
+        // 3. EOJ
+        ep.sendEOJ(true);
+
+        String text = pd.getCapturedText();
+        assertTrue(text.contains("LU3 REPORT CONTENT"));
+        assertEquals(1, pd.getPageCount());
+    }
+
+    @Test
+    public void testClientFacadePDTAndChannelConfiguration() {
+        PrinterDefinitionTable pcl5 = PrinterDefinitionTable.createPcl5PDT();
+        client.setPDT(pcl5);
+        assertEquals("PCL_5", client.getPDT().getName());
+
+        client.setChannelLine(4, 25);
+        assertEquals(25, client.getChannelLine(4));
+
+        byte[] text = translator.stringToEbcdic("CLIENT CONVENIENCE TEST");
+        client.printDirectBytes(text, 0, text.length);
+        client.flush();
+
+        String captured = client.getPD().getCapturedText();
+        assertTrue(captured.contains("CLIENT CONVENIENCE TEST"));
+    }
+
+    @Test
+    public void testPrintSessionEventListeners() {
+        AtomicBoolean jobStarted = new AtomicBoolean(false);
+        AtomicBoolean jobComplete = new AtomicBoolean(false);
+        AtomicInteger pagesReceived = new AtomicInteger(0);
+
+        PrintSessionListener listener = new PrintSessionListener() {
+            @Override
+            public void onPrintJobStarted(PrintSessionEvent event) {
+                jobStarted.set(true);
+            }
+
+            @Override
+            public void onPrintJobData(PrintSessionEvent event) {
+            }
+
+            @Override
+            public void onPrintJobPageComplete(PrintSessionEvent event) {
+                pagesReceived.incrementAndGet();
+            }
+
+            @Override
+            public void onPrintJobComplete(PrintSessionEvent event) {
+                jobComplete.set(true);
+            }
+
+            @Override
+            public void onPrinterStatusChanged(PrintSessionEvent event) {
+            }
+
+            @Override
+            public void onPrinterError(PrintSessionEvent event) {
+            }
+        };
+
+        ep.addPrintListener(listener);
+
+        ep.firePrintJobStarted("JOB01");
+        ep.firePrintJobPageComplete(1);
+        ep.sendEOJ(true);
+
+        assertTrue(jobStarted.get());
+        assertTrue(jobComplete.get());
+        assertEquals(1, pagesReceived.get());
+
+        ep.removePrintListener(listener);
+    }
+}