static void Main(string[] args)
{
uint systemClock = 0;
//ROM directories
DirectoryInfo macRoms = new DirectoryInfo(@"/Users/alexwright/Documents/MSc Files/Project/mac_roms/");
DirectoryInfo winRoms = new DirectoryInfo(@"C:\Users\Alex\Documents\MSc Files\Project\win_roms\");
DirectoryInfo dirForCurrentOS = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? winRoms : macRoms;
//File names
string nestest = @"nestest.nes";
string dk = @"Donkey Kong (World) (Rev A).nes";
//File to open
string selectedFile = dk;
string fileName = args.Length == 0 ? dirForCurrentOS.FullName + selectedFile : args[0];
// Emulator component objects
Cartridge cartridge = new Cartridge(fileName);
CpuBus cpuBus = new CpuBus();
PpuBus ppuBus = new PpuBus();
CPU cpu = new CPU();
PPU ppu = new PPU(cpu);
// IO device setup
uint displayScale = 2;
uint winW = 256;
uint winH = 240;
IODevice IODevice = new IODevice(winW, winH, displayScale);
IODevice.AddKeyPressEvent(Events.KeyEvent);
IODevice.AddClosedEvent(Events.OnClose);
// Emulator connections
cpuBus.ConnectPPU(ppu);
cpuBus.InsertCartridge(cartridge);
ppuBus.ConnectCartridge(cartridge);
ppu.ConnectBus(ppuBus);
cpu.ConnectBus(cpuBus);
ppu.ConnectIO(IODevice);
ppu.SetPalette(Palette.DefaultPalette);
// Emulator init procedure
cpu.Reset();
ppu.Reset();
#if force_nestest_all_tests
cpu.PC = 0xC000;
#endif
#if DisplayPatternMemory
displayScale = 4;
winW = 16 * 8;
winH = 16 * 8;
IODevice screen = new IODevice(winW, winH, displayScale);
screen.AddKeyPressEvent(Events.KeyEvent);
screen.AddClosedEvent(Events.OnClose);
ppu.GetPatternTable(1, 1);
ppu.GetPatternTable(0, 1);
for (int i = 0; i < (winW); i++)
{
for (int j = 0; j < (winH); j++)
{
screen.SetPixel(i, j, ppu.PatternMemory[0, i, j]);
}
}
while (screen.WindowIsOpen)
{
screen.Clear();
screen.DispatchEvents();
screen.DrawToWindow();
screen.Display();
}
#endif
#if GameLoop
// Emulation loop
void LoopEmulator()
{
ppu.Clock();
if (systemClock % 3 == 0)
{
cpu.Clock();
}
if (ppu.Nmi)
{
ppu.Nmi = false;
cpu.Nmi();
}
systemClock++;
}
// Screen Loop
while (IODevice.WindowIsOpen)
{
IODevice.DispatchEvents();
LoopEmulator();
if (ppu.FrameComplete)
{
ppu.FrameComplete = false;
IODevice.DrawToWindow();
IODevice.Display();
}
}
#endif
}
public void ConnectBus(CpuBus bus)
{
this.bus = bus;
}
