protected void RunEmulator(IEmulator emulator, Func <bool> tickFunc)
{
IProcessorCore cpu = (IProcessorCore)emulator.Components.First(c => c.Name == "Ricoh 2A03 CPU");
IComponentWithClock ppu = (IComponentWithClock)emulator.Components.First(c => c.Name == "Ricoh 2C02 PPU");
IComponentWithClock apu = (IComponentWithClock)emulator.Components.First(c => c.Name == "NES APU");
while (true)
{
if (tickFunc != null && !tickFunc())
{
break;
}
int cycles = cpu.Step();
if (cycles < 0)
{
Assert.Fail("CPU step failed!");
break;
}
for (int i = 0; i < cycles; i++)
{
// PPU ticks 3 times during each CPU cycle
ppu.Tick();
ppu.Tick();
ppu.Tick();
}
for (int i = 0; i < cycles; i++)
{
apu.Tick();
}
}
}
void IEmulator.Run()
{
int cycles;
int cycleCount = 0;
Stopwatch sw = new Stopwatch();
sw.Start();
this.run = true;
IProcessorCore core = (IProcessorCore)this.cpu;
IComponentWithClock ppuClock = (IComponentWithClock)this.ppu;
IComponentWithClock apuClock = (IComponentWithClock)this.cpu.APU;
while (this.run)
{
cycles = core.Step();
if (cycles < 0)
{
break;
}
for (int i = 0; i < cycles; i++)
{
// PPU ticks 3 times during each CPU cycle
ppuClock.Tick();
ppuClock.Tick();
ppuClock.Tick();
}
for (int i = 0; i < cycles; i++)
{
apuClock.Tick();
}
cycleCount += cycles;
if (sw.ElapsedMilliseconds >= 1000)
{
Trace.WriteLine(String.Format("Emulated clock speed: {0} MHz", cycleCount / (1000000f)));
cycleCount = 0;
sw.Restart();
}
}
stopEvent.Set();
}