added disasembly and better demo program

simulator_SIC_XE/gui/qt/mainwindow.h

@@ -32,6 +32,7 @@ public:
 private slots:
     void updateRegisterDisplays();
     void updateMemoryDisplay();
+    void updateDisassemblyDisplay();
     void onRegisterFieldChanged();
     void onMemoryInc256();
     void onMemoryInc4096();
@@ -39,12 +40,23 @@ private slots:
     void onMemoryDec256();
     void onMemoryDec4096();
     void onMemoryDec65536();
+    void onMemoryGoToStart();
+    void onMemoryGoToEnd();
+    void onDisassemblyInc();
+    void onDisassemblyInc16();
+    void onDisassemblyInc256();
+    void onDisassemblyDec();
+    void onDisassemblyDec16();
+    void onDisassemblyDec256();
+    void onDisassemblyGoToStart();
+    void onDisassemblyGoToEnd();
 
 private:
     Ui::MainWindow *ui;
     std::shared_ptr<Machine> m_machine;
     std::unique_ptr<MachineController> m_controller;
     int m_memoryOffset = 0;
+    int m_disassemblyOffset = 0;
     
     void connectRegisterFields();
     void updateSingleRegisterDisplay(const QString& fieldName, int value);
@@ -53,6 +65,18 @@ private:
     void handleFloatRegisterFieldChanged(QLineEdit* field, const QString& objectName);
     void loadDemoProgram();
     void setupMemoryDisplay();
+    void setupDisassemblyDisplay();
+    
+    struct DisassembledInstruction {
+        int address;
+        int size;
+        QString mnemonic;
+        QString operand;
+        int effectiveAddr;
+        bool isImmediate;
+        bool isIndirect;
+    };
+    DisassembledInstruction disassembleAt(int address);
 };
 
 #endif // MAINWINDOW_H