public void MachineCycle()
{
lastCycles = _cpu.Cycles;
if (prepareSpeedSwitch)
{
if (_cpu.Stop)
{
doubleSpeed = !doubleSpeed;
prepareSpeedSwitch = false;
_cpu.Stop = false;
}
}
if (doubleSpeed)
{
HandleInterrupt();
_cpu.Cycle();
HandleInterrupt();
_cpu.Cycle();
for (int i = 0; i < _cpu.Cycles - lastCycles; i++)
{
Timer();
}
for (int i = 0; i < (_cpu.Cycles - lastCycles) / 2; i++)
{
_ppu.LcdTick();
_apu.ApuTick();
}
}
else
{
HandleInterrupt();
_cpu.Cycle();
for (int i = 0; i < _cpu.Cycles - lastCycles; i++)
{
_ppu.LcdTick();
Timer();
_apu.ApuTick();
}
}
if (saveState)
{
WriteSaveState(ref _saveState);
_cart.WriteStateFile(_saveState, selectedSavestate);
saveState = false;
}
if (loadState)
{
Savestate tempState = _cart.LoadStateFile(selectedSavestate);
if (tempState != null)
{
LoadSaveState(tempState);
}
loadState = false;
}
}
static void Main(string[] args)
{
Console.WriteLine("NES Test");
Cpu.OnStep += Cpu_OnStep;
// Load golden log
// Load NES Test "ROM"
var file = File.ReadAllBytes("nestest.nes");
var data = file.Skip(0x10).ToArray();
for (int i = 0; i < data.Length; i++)
{
Memory[0xC000 + i] = data[i];
}
// Set PC start
Cpu.PC = 0xC000;
// Cycle CPU until all official op codes has been tested
Console.WriteLine("\nRunning official op code test...");
while (Break == false && Cpu.PC != 0xC6BD)
{
Cpu.Cycle();
Thread.Sleep(TimeSpan.FromTicks(9000));
}
Console.WriteLine("\nSUCCESS!\n");
// Cycle CPU until all unofficial op codes has been tested
Console.WriteLine("\nRunning unofficial op code test...");
while (Break == false && Cpu.PC != 0x0001)
{
try {
Cpu.Cycle();
Thread.Sleep(TimeSpan.FromTicks(9000));
} catch (Exception) {
Console.WriteLine($"MISSING OP CODE: 0x{Memory._memory[Cpu.PC]:X2}");
Break = true;
}
}
if (!Break)
{
Console.WriteLine("\nSUCCESS!\n");
}
Console.WriteLine($"PROGRESS: {CurrentLogLine}/{GoldenLog.Length} ({(CurrentLogLine * 100f / GoldenLog.Length):F1}%)");
}
private void Update()
{
foreach (uint u in m_UpdateAddrList)
{
m_CpuInstance.ClearStackAndStates();
m_CpuInstance.PushState(u); //Jump to Registered Function
while (m_CpuInstance.StackDepth != 0)
{
m_CpuInstance.Cycle();
}
m_CpuInstance.UnSet(Cpu.Flags.Halt);
}
}
static void Main(string[] args)
{
var bios = File.ReadAllBytes(args[0]);
var bus = new Bus(bios);
var cpu = new Cpu();
while (true)
{
cpu.Cycle(bus);
}
}
public void PowerOn()
{
if (_isRunnning)
{
return;
}
Initialize();
// Apply ROM patches
if (Settings.Default.KernalWhiteTextColor)
{
PatchKernalRomTextColor(0x01);
}
Cpu.Reset();
_isRunnning = true;
_tcsStop = new TaskCompletionSource <bool>();
var swCpuClock = Stopwatch.StartNew();
var t = new Thread(() => {
while (_isRunnning)
{
// CPU clock
if (swCpuClock.Elapsed.TotalMilliseconds >= CpuPeriodMilliseconds)
{
CpuPeriodMillisecondsReal = swCpuClock.Elapsed.TotalMilliseconds;
CpuClockSpeedRealHz = 1 / (CpuPeriodMillisecondsReal / 1000.0f);
swCpuClock.Restart();
// Clock CIA 1
Cia.Clock();
// Cycle VIC-II
Vic.Cycle();
// Cycle the CPU
Cpu.Cycle();
}
}
_tcsStop.SetResult(true);
});
t.SetApartmentState(ApartmentState.STA);
t.Start();
}
private uint Run(uint address)
{
m_Instance.PushState(address);
while (m_Instance.StackDepth != 0)
{
m_Instance.Cycle();
if (m_Instance.HasSet(Cpu.Flags.Halt))
{
m_Instance.UnSet(Cpu.Flags.Halt);
return(0);
}
}
return(m_Instance.Pop());
}
public void WhenDxynOpIsExecuted_CpuRequiresDrawing()
{
mem.SetByte(0x200, 0XD1);
mem.SetByte(0x201, 0x23);
cpu.VRegisters[1] = 0x25;
cpu.VRegisters[2] = 0x30;
cpu.IndexRegister = 0x250;
cpu.DrawingRequired = false;
cpu.Cycle();
cpu.DrawingRequired.Should().BeTrue();
}