added visible memory

simulator_SIC_XE/gui/qt/mainwindow.cpp

@@ -10,7 +10,10 @@
 #include <QRegularExpressionValidator>
 #include <QDoubleValidator>
 #include <QPushButton>
-#include <cstdint>               
+#include <cstdint>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QFont>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
@@ -60,6 +63,7 @@ MainWindow::MainWindow(QWidget *parent) :
 
 
     connect(m_controller.get(), &MachineController::tick, this, &MainWindow::updateRegisterDisplays);
+    connect(m_controller.get(), &MachineController::tick, this, &MainWindow::updateMemoryDisplay);
     
     connectRegisterFields();
     
@@ -67,9 +71,18 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(ui->StopBtn, &QPushButton::clicked, this, &MainWindow::stopExecution);
     connect(ui->StepBtn, &QPushButton::clicked, this, &MainWindow::stepExecution);
     
+    connect(ui->MemoryInc256Btn, &QPushButton::clicked, this, &MainWindow::onMemoryInc256);
+    connect(ui->MemoryInc4096Btn, &QPushButton::clicked, this, &MainWindow::onMemoryInc4096);
+    connect(ui->MemoryInc65536Btn, &QPushButton::clicked, this, &MainWindow::onMemoryInc65536);
+    connect(ui->MemoryDec256Btn, &QPushButton::clicked, this, &MainWindow::onMemoryDec256);
+    connect(ui->MemoryDec4096Btn, &QPushButton::clicked, this, &MainWindow::onMemoryDec4096);
+    connect(ui->MemoryDec65536Btn, &QPushButton::clicked, this, &MainWindow::onMemoryDec65536);
+    
+    setupMemoryDisplay();
     loadDemoProgram();
     
     updateRegisterDisplays();
+    updateMemoryDisplay();
 }
 
 MainWindow::~MainWindow()
@@ -412,3 +425,130 @@ void MainWindow::loadDemoProgram()
     qDebug() << "Program loaded. TEMP at 0x" << QString::number(TEMP_ADDR, 16).toUpper();
     qDebug() << "PC set to 0x00. Ready to execute.";
 }
+
+void MainWindow::setupMemoryDisplay()
+{
+    // Set the title
+    ui->MemorygroupBox->setTitle("Memory (RAM)");
+}
+
+void MainWindow::onMemoryInc256()
+{
+    m_memoryOffset += 256;
+    if (m_memoryOffset > 1048576 - 256) {
+        m_memoryOffset = 1048576 - 256;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::onMemoryInc4096()
+{
+    m_memoryOffset += 4096;
+    if (m_memoryOffset > 1048576 - 256) {
+        m_memoryOffset = 1048576 - 256;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::onMemoryInc65536()
+{
+    m_memoryOffset += 65536;
+    if (m_memoryOffset > 1048576 - 256) {
+        m_memoryOffset = 1048576 - 256;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::onMemoryDec256()
+{
+    m_memoryOffset -= 256;
+    if (m_memoryOffset < 0) {
+        m_memoryOffset = 0;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::onMemoryDec4096()
+{
+    m_memoryOffset -= 4096;
+    if (m_memoryOffset < 0) {
+        m_memoryOffset = 0;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::onMemoryDec65536()
+{
+    m_memoryOffset -= 65536;
+    if (m_memoryOffset < 0) {
+        m_memoryOffset = 0;
+    }
+    updateMemoryDisplay();
+}
+
+void MainWindow::updateMemoryDisplay()
+{
+    if (!m_machine) return;
+    
+    // Create a widget to hold the memory display
+    QWidget* container = new QWidget();
+    QVBoxLayout* layout = new QVBoxLayout(container);
+    layout->setSpacing(1);
+    layout->setContentsMargins(5, 5, 5, 5);
+    
+    // Create monospace font for memory display
+    QFont monoFont("Courier New");
+    monoFont.setPointSize(9);
+    
+    // Header with current offset range
+    QString headerText = QString("Address      Hex Value    Char   [0x%1 - 0x%2]")
+        .arg(m_memoryOffset, 5, 16, QChar('0')).toUpper()
+        .arg(m_memoryOffset + 255, 5, 16, QChar('0')).toUpper();
+    QLabel* header = new QLabel(headerText);
+    QFont headerFont = monoFont;
+    headerFont.setBold(true);
+    header->setFont(headerFont);
+    layout->addWidget(header);
+    
+    // Get PC for highlighting
+    int pc = m_machine->getPC();
+    
+    // Display memory byte by byte - ONLY 256 bytes from current offset
+    for (int i = 0; i < 256; i++) {
+        int addr = m_memoryOffset + i;
+        int byte = m_machine->getByte(addr);
+        
+        QString addressStr = QString("0x%1").arg(addr, 5, 16, QChar('0')).toUpper();
+        
+        // Hex value column
+        QString hexStr = QString("0x%1").arg(byte, 2, 16, QChar('0')).toUpper();
+        
+        // Char representation
+        QString charStr;
+        if (byte >= 32 && byte <= 126) {
+            charStr = QChar(byte);
+        } else {
+            charStr = '.';
+        }
+        
+        QString line = QString("%1    %2       %3")
+            .arg(addressStr, -12)
+            .arg(hexStr, -12)
+            .arg(charStr);
+        
+        QLabel* memLine = new QLabel(line);
+        memLine->setFont(monoFont);
+        
+        // Highlight the current PC address
+        if (pc == addr) {
+            memLine->setStyleSheet("background-color: #FFFF99; font-weight: bold;"); 
+        }
+        
+        layout->addWidget(memLine);
+    }
+    
+    layout->addStretch();
+    container->setLayout(layout);
+    
+    ui->MemoryScrollArea->setWidget(container);
+}

simulator_SIC_XE/gui/qt/mainwindow.h

@@ -31,12 +31,20 @@ public:
 
 private slots:
     void updateRegisterDisplays();
+    void updateMemoryDisplay();
     void onRegisterFieldChanged();
+    void onMemoryInc256();
+    void onMemoryInc4096();
+    void onMemoryInc65536();
+    void onMemoryDec256();
+    void onMemoryDec4096();
+    void onMemoryDec65536();
 
 private:
     Ui::MainWindow *ui;
     std::shared_ptr<Machine> m_machine;
     std::unique_ptr<MachineController> m_controller;
+    int m_memoryOffset = 0;
     
     void connectRegisterFields();
     void updateSingleRegisterDisplay(const QString& fieldName, int value);
@@ -44,6 +52,7 @@ private:
     void updateFloatRegisterFormats(const QString& regPrefix, double value);
     void handleFloatRegisterFieldChanged(QLineEdit* field, const QString& objectName);
     void loadDemoProgram();
+    void setupMemoryDisplay();
 };
 
 #endif // MAINWINDOW_H

simulator_SIC_XE/gui/qt/mainwindow.ui

@@ -584,6 +584,120 @@
       <height>601</height>
      </rect>
     </property>
+    <widget class="QGroupBox" name="MemorygroupBox">
+     <property name="geometry">
+      <rect>
+       <x>0</x>
+       <y>0</y>
+       <width>711</width>
+       <height>251</height>
+      </rect>
+     </property>
+     <property name="title">
+      <string>GroupBox</string>
+     </property>
+     <widget class="QScrollArea" name="MemoryScrollArea">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>20</y>
+        <width>711</width>
+        <height>171</height>
+       </rect>
+      </property>
+      <property name="widgetResizable">
+       <bool>true</bool>
+      </property>
+      <widget class="QWidget" name="scrollAreaWidgetContents">
+       <property name="geometry">
+        <rect>
+         <x>0</x>
+         <y>0</y>
+         <width>709</width>
+         <height>169</height>
+        </rect>
+       </property>
+      </widget>
+     </widget>
+     <widget class="QPushButton" name="MemoryInc4096Btn">
+      <property name="geometry">
+       <rect>
+        <x>460</x>
+        <y>200</y>
+        <width>121</width>
+        <height>23</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&gt;&gt; M[+0x01000]</string>
+      </property>
+     </widget>
+     <widget class="QPushButton" name="MemoryInc256Btn">
+      <property name="geometry">
+       <rect>
+        <x>360</x>
+        <y>200</y>
+        <width>101</width>
+        <height>23</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&gt; M[+0x00100]</string>
+      </property>
+     </widget>
+     <widget class="QPushButton" name="MemoryInc65536Btn">
+      <property name="geometry">
+       <rect>
+        <x>580</x>
+        <y>200</y>
+        <width>121</width>
+        <height>23</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&gt;&gt;&gt; M[+0x10000]</string>
+      </property>
+     </widget>
+     <widget class="QPushButton" name="MemoryDec256Btn">
+      <property name="geometry">
+       <rect>
+        <x>250</x>
+        <y>200</y>
+        <width>101</width>
+        <height>23</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&lt; M[-0x00100]</string>
+      </property>
+     </widget>
+     <widget class="QPushButton" name="MemoryDec4096Btn">
+      <property name="geometry">
+       <rect>
+        <x>130</x>
+        <y>200</y>
+        <width>121</width>
+        <height>23</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&lt;&lt; M[-0x01000]</string>
+      </property>
+     </widget>
+     <widget class="QPushButton" name="MemoryDec65536Btn">
+      <property name="geometry">
+       <rect>
+        <x>10</x>
+        <y>200</y>
+        <width>121</width>
+        <height>21</height>
+       </rect>
+      </property>
+      <property name="text">
+       <string>&lt;&lt;&lt; M[-0x10000]</string>
+      </property>
+     </widget>
+    </widget>
    </widget>
   </widget>
   <widget class="QMenuBar" name="menubar">

simulator_SIC_XE/include/constants.h

@@ -6,7 +6,7 @@
 // ==============================
 
 // Memory and system constants
-constexpr int MEMORY_SIZE = 65536;
+constexpr int MEMORY_SIZE = 1 << 20; // 1 MB memory
 constexpr int NUM_DEVICES = 256;
 constexpr int WORD_SIZE = 24;
 constexpr int WORD_MASK = 0xFFFFFF;