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);
+}