111 lines
3.7 KiB
C#
111 lines
3.7 KiB
C#
using Core.Cpu;
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using Core.Io;
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using Core.Memory;
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using System;
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using System.IO;
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using System.Collections.Generic;
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namespace Core
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{
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public class SmsMachine
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{
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public Z80 Cpu { get; private set; }
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public SmsMemoryBus MemoryBus { get; private set; }
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public SmsIoBus IoBus { get; private set; }
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public Core.Video.SmsVdp VideoProcessor { get; private set; }
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public ushort? Breakpoint { get; set; } = null;
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// NTSC SMS T-States per frame
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public const int TStatesPerFrame = 59736;
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public SmsMachine()
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{
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MemoryBus = new SmsMemoryBus();
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VideoProcessor = new Core.Video.SmsVdp();
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IoBus = new SmsIoBus { VideoProcessor = this.VideoProcessor };
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Cpu = new Z80(MemoryBus, IoBus);
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}
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public void LoadCartridge(byte[] romData)
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{
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MemoryBus.LoadCartridge(romData);
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Reset();
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}
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public void Reset()
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{
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MemoryBus.CleanRAMData();
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Cpu.Reset();
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}
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public int StepMachine()
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{
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// 1. Tick the CPU
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int tStates = Cpu.Step();
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// 2. Tell the VDP how much time just passed
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VideoProcessor.Update(tStates);
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// 3. Trigger interrupts if the VDP hit scanline 192
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if (VideoProcessor.InterruptPending)
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{
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tStates += Cpu.RequestInterrupt();
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}
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return tStates;
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}
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public void RunFrame()
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{
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long currentFrameTStates = 0;
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while (currentFrameTStates < TStatesPerFrame)
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{
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currentFrameTStates += StepMachine();
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string filePath = "captured_data.txt";
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// Mock data to loop through
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//List<ushort> sensorReadings = new List<ushort> { Cpu.PC, Cpu.AF.Word, Cpu.BC.Word, Cpu.DE.Word, Cpu.HL.Word, Cpu.SP};
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//List<string> type = new List<string> {"PC: 0x", "AF: 0x", "BC: 0x", "DE: 0x", "HL: 0x", "SP: 0x" };
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//try
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//{
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// // 2. Initialize StreamWriter within a 'using' block
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// // The 'true' parameter means "append" to the file. Use 'false' to overwrite.
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// using (StreamWriter writer = new StreamWriter(filePath, append: true))
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// {
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// foreach (int reading in sensorReadings)
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// {
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// string timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
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// // 3. Construct your string and write it
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// foreach (string _type in type)
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// {
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// string line = $"{timestamp} | {_type} {reading}";
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// writer.WriteLine(line);
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// }
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// // Optional: Console feedback
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// //Console.WriteLine($"Logged: {line}");
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// }
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// }
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// // File is automatically closed and saved here
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// //Console.WriteLine("Data capture complete.");
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//}
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//catch (IOException e)
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//{
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// Console.WriteLine($"An error occurred: {e.Message}");
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//}
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// THE TRIPWIRE: Check the breakpoint after EVERY single instruction!
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if (Breakpoint.HasValue && Cpu.PC == Breakpoint.Value)
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{
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break; // Abort the frame loop immediately!
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}
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}
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}
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}
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} |