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Added acanline rendering. Fixed interrupts. Added XInput support

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This commit is contained in:
Marc Parsons
2026-05-12 23:13:23 +01:00
parent edb41bdb3a
commit d571fe7187
6 changed files with 222 additions and 255 deletions
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75
Core/SmsMachine.cs
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@@ -38,74 +38,33 @@ namespace Core
Cpu.Reset();
}
public int StepMachine()
{
// 1. Tick the CPU
int tStates = Cpu.Step();
// 2. Tell the VDP how much time just passed
VideoProcessor.Update(tStates);
// 3. Trigger interrupts if the VDP hit scanline 192
if (VideoProcessor.InterruptPending)
{
tStates += Cpu.RequestInterrupt();
}
return tStates;
}
public void RunFrame()
{
long currentFrameTStates = 0;
while (currentFrameTStates < TStatesPerFrame)
int tStatesThisFrame = 0;
while (tStatesThisFrame < 59736) // Standard NTSC frame time
{
currentFrameTStates += StepMachine();
string filePath = "captured_data.txt";
// 1. Run one CPU instruction
int cycles = Cpu.Step();
tStatesThisFrame += cycles;
// Mock data to loop through
//List<ushort> sensorReadings = new List<ushort> { Cpu.PC, Cpu.AF.Word, Cpu.BC.Word, Cpu.DE.Word, Cpu.HL.Word, Cpu.SP};
//List<string> type = new List<string> {"PC: 0x", "AF: 0x", "BC: 0x", "DE: 0x", "HL: 0x", "SP: 0x" };
// 2. Tell the VDP to catch up
VideoProcessor.Update(cycles);
//try
//{
// // 2. Initialize StreamWriter within a 'using' block
// // The 'true' parameter means "append" to the file. Use 'false' to overwrite.
// using (StreamWriter writer = new StreamWriter(filePath, append: true))
// {
// foreach (int reading in sensorReadings)
// {
// string timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
// 3. Check if the VDP is begging for attention!
if (VideoProcessor.InterruptPending && Cpu.IFF1)
{
int intCycles = Cpu.RequestInterrupt();
tStatesThisFrame += intCycles;
VideoProcessor.Update(intCycles); // Keep VDP perfectly in sync
}
// // 3. Construct your string and write it
// foreach (string _type in type)
// {
// string line = $"{timestamp} | {_type} {reading}";
// writer.WriteLine(line);
// }
// // Optional: Console feedback
// //Console.WriteLine($"Logged: {line}");
// }
// }
// // File is automatically closed and saved here
// //Console.WriteLine("Data capture complete.");
//}
//catch (IOException e)
//{
// Console.WriteLine($"An error occurred: {e.Message}");
//}
// THE TRIPWIRE: Check the breakpoint after EVERY single instruction!
// 4. THE RESTORED BREAKPOINT TRAP
if (Breakpoint.HasValue && Cpu.PC == Breakpoint.Value)
{
break; // Abort the frame loop immediately!
break; // Instantly abort the frame so the debugger can take over!
}
}
}
}
}