toptensoftware

public class Tokenizer
{
    public Tokenizer(TextReader reader);

    // The current token
    public Token Token { get; }
    
    // The value of the number of Token.Number
    public double Number { get; }
    

toptensoftware

public enum Token
{
    EOF,
    Add,
    Subtract,
    Number,
}

toptensoftware

// Force break in the debugger on the next instruction
public void Break()
{
    _break = true;
}

toptensoftware

public class StepOutBreakPoint : BreakPoint
{
    public StepOutBreakPoint(CPU cpu)
    {
        // Store the current stack pointer
        _ssBreakOnReturn = cpu.ss;
        _spBreakOnReturn = cpu.sp;
    }

    ushort _ssBreakOnReturn = 0;

toptensoftware

// Single Step
void SingleStep()
{
    _break = true;
}

// Step Over
public void StepOver()
{
    // Check if the current instruction is a call instruction

toptensoftware

void IDebugger.OnStep()
{
    // Test all break points
    for (int i=0; i<_allBreakPoints.Count; i++)
    {
        if (bp.Enabled && bp.ShouldBreak(this))
        {
            _break = true;
        }
    }

toptensoftware

public class CodeBreakPoint : BreakPoint
{
    public CodeBreakPoint(ushort segment, ushort offset)
    {
        Segment = segment;
        Offset = offset;
    }

    public ushort Segment;
    public ushort Offset;

toptensoftware

public class CodeBreakPoint : BreakPoint
{
    public CodeBreakPoint(ushort segment, ushort offset)
    {
        Segment = segment;
        Offset = offset;
    }

    public ushort Segment;
    public ushort Offset;

toptensoftware

public abstract class BreakPoint
{
    // Check if this break point wants the debugger to stop
    public abstract bool ShouldBreak(DebuggerCore debugger);

    [Json("number")]
    public int Number { get; set; }

    [Json("enabled")]
    public bool Enabled { get; set; }

toptensoftware

public class Disassembler
{
    // Machine code read from here
    public IMemoryBus MemoryBus { get; set; }
    
    // Using this address
    public ushort cs { get; set; }
    public ushort ip { get; set; }

    // Read disassembled instruction here