public Cpu()
{
processor = new MOS6502X();
processor.DummyReadMemory = CoreReadMemory;
processor.ReadMemory = CoreReadMemory;
processor.WriteMemory = CoreWriteMemory;
Reset();
}
// ------------------------------------
public MOS6510()
{
cpu = new MOS6502X();
// configure cpu r/w
cpu.DummyReadMemory = Read;
cpu.ReadMemory = Read;
cpu.WriteMemory = Write;
// perform hard reset
HardReset();
}
// ------------------------------------
public Chip6510()
{
// configure cpu r/w
_cpu = new MOS6502X
{
DummyReadMemory = CpuRead,
ReadMemory = CpuRead,
WriteMemory = CpuWrite,
PeekMemory = CpuPeek
};
// perform hard reset
HardReset();
}
public Drive1541(int clockNum, int clockDen)
{
DriveRom = new Chip23128();
_cpu = new MOS6502X
{
ReadMemory = CpuRead,
WriteMemory = CpuWrite,
DummyReadMemory = CpuRead,
PeekMemory = CpuPeek,
NMI = false
};
_ram = new int[0x800];
Via0 = Chip6522.Create(ViaReadClock, ViaReadData, ViaReadAtn, 8);
Via1 = Chip6522.Create(ReadVia1PrA, ReadVia1PrB);
_cpuClockNum = clockNum;
_driveCpuClockNum = clockDen*16000000; // 16mhz
}
public void HardReset()
{
cpu = new MOS6502X();
cpu.SetCallbacks(ReadMemory, ReadMemory, PeekMemory, WriteMemory);
cpu.BCD_Enabled = false;
cpu.OnExecFetch = ExecFetch;
ppu = new PPU(this);
ram = new byte[0x800];
CIRAM = new byte[0x800];
// wire controllers
// todo: allow changing this
ControllerDeck = ControllerSettings.Instantiate(ppu.LightGunCallback);
// set controller definition first time only
if (ControllerDefinition == null)
{
ControllerDefinition = new ControllerDefinition(ControllerDeck.GetDefinition());
ControllerDefinition.Name = "NES Controller";
// controls other than the deck
ControllerDefinition.BoolButtons.Add("Power");
ControllerDefinition.BoolButtons.Add("Reset");
if (Board is FDS)
{
var b = Board as FDS;
ControllerDefinition.BoolButtons.Add("FDS Eject");
for (int i = 0; i < b.NumSides; i++)
ControllerDefinition.BoolButtons.Add("FDS Insert " + i);
}
}
// don't replace the magicSoundProvider on reset, as it's not needed
// if (magicSoundProvider != null) magicSoundProvider.Dispose();
// set up region
switch (_display_type)
{
case Common.DisplayType.PAL:
apu = new APU(this, apu, true);
ppu.region = PPU.Region.PAL;
CoreComm.VsyncNum = 50;
CoreComm.VsyncDen = 1;
cpuclockrate = 1662607;
cpu_sequence = cpu_sequence_PAL;
_display_type = DisplayType.PAL;
break;
case Common.DisplayType.NTSC:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.NTSC;
CoreComm.VsyncNum = 39375000;
CoreComm.VsyncDen = 655171;
cpuclockrate = 1789773;
cpu_sequence = cpu_sequence_NTSC;
break;
// this is in bootgod, but not used at all
case Common.DisplayType.DENDY:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.Dendy;
CoreComm.VsyncNum = 50;
CoreComm.VsyncDen = 1;
cpuclockrate = 1773448;
cpu_sequence = cpu_sequence_NTSC;
_display_type = DisplayType.DENDY;
break;
default:
throw new Exception("Unknown displaytype!");
}
if (magicSoundProvider == null)
magicSoundProvider = new MagicSoundProvider(this, (uint)cpuclockrate);
BoardSystemHardReset();
//check fceux's PowerNES and FCEU_MemoryRand function for more information:
//relevant games: Cybernoid; Minna no Taabou no Nakayoshi Daisakusen; Huang Di; and maybe mechanized attack
for(int i=0;i<0x800;i++) if((i&4)!=0) ram[i] = 0xFF; else ram[i] = 0x00;
SetupMemoryDomains();
//in this emulator, reset takes place instantaneously
cpu.PC = (ushort)(ReadMemory(0xFFFC) | (ReadMemory(0xFFFD) << 8));
cpu.P = 0x34;
cpu.S = 0xFD;
}
public string Disassemble(MemoryDomain m, uint addr, out int length)
{
return(MOS6502X.Disassemble((ushort)addr, out length, a => m.PeekByte((int)a)));
}
public string Disassemble(ushort pc, out int bytesToAdvance)
{
return(MOS6502X.Disassemble(pc, out bytesToAdvance, _link.PeekMemory));
}
public VIC1541Motherboard(Region initRegion, byte[] initRom)
{
cpu = new MOS6502X();
pla = new VIC1541PLA();
ram = new byte[0x800];
rom = initRom;
serPort = new SerialPort();
via0 = new MOS6522();
via1 = new MOS6522();
cpu.DummyReadMemory = pla.Read;
cpu.ReadMemory = pla.Read;
cpu.WriteMemory = pla.Write;
pla.PeekRam = ((int addr) => { return ram[addr & 0x07FF]; });
pla.PeekRom = ((int addr) => { return rom[addr & 0x3FFF]; });
pla.PeekVia0 = via0.Peek;
pla.PeekVia1 = via1.Peek;
pla.PokeRam = ((int addr, byte val) => { ram[addr & 0x07FF] = val; });
pla.PokeRom = ((int addr, byte val) => { });
pla.PokeVia0 = via0.Poke;
pla.PokeVia1 = via1.Poke;
pla.ReadRam = ((ushort addr) => { return ram[addr & 0x07FF]; });
pla.ReadRom = ((ushort addr) => { return rom[addr & 0x3FFF]; });
pla.ReadVia0 = via0.Read;
pla.ReadVia1 = via1.Read;
pla.WriteRam = ((ushort addr, byte val) => { ram[addr & 0x07FF] = val; });
pla.WriteRom = ((ushort addr, byte val) => { });
pla.WriteVia0 = via0.Write;
pla.WriteVia1 = via1.Write;
via0CA0 = false;
via0CA1 = false;
via0CB0 = false;
via0CB1 = false;
via0DirA = 0x00;
via0DirB = 0x00;
via0DataA = 0xFF;
via0DataB = 0xFF;
via1CA0 = false;
via1CA1 = false;
via1CB0 = false;
via1CB1 = false;
via1DirA = 0x00;
via1DirB = 0x00;
via1DataA = 0xFF;
via1DataB = 0xFF;
via0.ReadCA0 = (() => { return via0CA0; });
via0.ReadCA1 = (() => { return via0CA1; });
via0.ReadCB0 = (() => { return via0CB0; });
via0.ReadCB1 = (() => { return via0CB1; });
via0.ReadDirA = (() => { return via0DirA; });
via0.ReadDirB = (() => { return via0DirB; });
via0.ReadPortA = (() => { return via0DataA; });
via0.ReadPortB = (() => { return via0DataB; });
via0.WriteCA0 = ((bool val) => { via0CA0 = val; });
via0.WriteCA1 = ((bool val) => { via0CA1 = val; });
via0.WriteCB0 = ((bool val) => { via0CB0 = val; });
via0.WriteCB1 = ((bool val) => { via0CB1 = val; });
via0.WriteDirA = ((byte val) => { via0DirA = val; });
via0.WriteDirB = ((byte val) => { via0DirB = val; });
via0.WritePortA = ((byte val) => {
via0DataA = Port.CPUWrite(via0DataA, val, via0DirA);
});
via0.WritePortB = ((byte val) => {
via0DataB = Port.CPUWrite(via0DataB, val, via0DirB);
serPort.DeviceWriteAtn((via0DataB & 0x80) != 0);
serPort.DeviceWriteClock((via0DataB & 0x08) != 0);
serPort.DeviceWriteData((via0DataB & 0x02) != 0);
});
via1.ReadCA0 = (() => { return via1CA0; });
via1.ReadCA1 = (() => { return via1CA1; });
via1.ReadCB0 = (() => { return via1CB0; });
via1.ReadCB1 = (() => { return via1CB1; });
via1.ReadDirA = (() => { return via1DirA; });
via1.ReadDirB = (() => { return via1DirB; });
via1.ReadPortA = (() => { return via1DataA; });
via1.ReadPortB = (() => { return via1DataB; });
via1.WriteCA0 = ((bool val) => { via1CA0 = val; });
via1.WriteCA1 = ((bool val) => { via1CA1 = val; });
via1.WriteCB0 = ((bool val) => { via1CB0 = val; });
via1.WriteCB1 = ((bool val) => { via1CB1 = val; });
via1.WriteDirA = ((byte val) => { via1DirA = val; });
via1.WriteDirB = ((byte val) => { via1DirB = val; });
via1.WritePortA = ((byte val) => {
via1DataA = Port.CPUWrite(via1DataA, val, via1DirA);
});
via1.WritePortB = ((byte val) => {
via1DataB = Port.CPUWrite(via1DataB, val, via1DirB);
});
}
public void HardReset()
{
Ram = new byte[128];
_mapper.HardReset();
Cpu = new MOS6502X
{
ReadMemory = this.ReadMemory,
WriteMemory = this.WriteMemory,
PeekMemory = this.PeekMemory,
DummyReadMemory = this.ReadMemory,
OnExecFetch = this.ExecFetch
};
_tia.Reset();
M6532 = new M6532(this);
Cpu.PC = (ushort)(ReadMemory(0x1FFC) + (ReadMemory(0x1FFD) << 8)); // set the initial PC
}
public void RebootCore()
{
// Regenerate mapper here to make sure its state is entirely clean
switch (_game.GetOptionsDict()["m"])
{
case "2IN1":
_mapper = SetMultiCartMapper(Rom.Length, 2);
break;
case "4IN1":
_mapper = SetMultiCartMapper(Rom.Length, 4);
break;
case "8IN1":
_mapper = SetMultiCartMapper(Rom.Length, 8);
break;
case "16IN1":
_mapper = SetMultiCartMapper(Rom.Length, 16);
break;
case "32IN1":
_mapper = SetMultiCartMapper(Rom.Length, 32);
break;
case "AR":
_mapper = new mAR(this); // This mapper has to set up configurations in the contructor.
break;
case "4K":
_mapper = new m4K();
break;
case "2K":
_mapper = new m2K();
break;
case "CM":
_mapper = new mCM();
break;
case "CV":
_mapper = new mCV();
break;
case "DPC":
_mapper = new mDPC();
break;
case "DPC+":
_mapper = new mDPCPlus();
break;
case "F8":
_mapper = new mF8();
break;
case "F8SC":
_mapper = new mF8SC();
break;
case "F6":
_mapper = new mF6();
break;
case "F6SC":
_mapper = new mF6SC();
break;
case "F4":
_mapper = new mF4();
break;
case "F4SC":
_mapper = new mF4SC();
break;
case "FE":
_mapper = new mFE();
break;
case "E0":
_mapper = new mE0();
break;
case "3F":
_mapper = new m3F();
break;
case "FA":
_mapper = new mFA();
break;
case "FA2":
_mapper = new mFA2();
break;
case "E7":
_mapper = new mE7();
break;
case "F0":
_mapper = new mF0();
break;
case "UA":
_mapper = new mUA();
break;
// Homebrew mappers
case "3E":
_mapper = new m3E();
break;
case "0840":
_mapper = new m0840();
break;
case "MC":
_mapper = new mMC();
break;
case "EF":
_mapper = new mEF();
break;
case "EFSC":
_mapper = new mEFSC();
break;
case "X07":
_mapper = new mX07();
break;
case "4A50":
_mapper = new m4A50();
break;
case "SB":
_mapper = new mSB();
break;
default:
throw new InvalidOperationException("mapper not supported: " + _game.GetOptionsDict()["m"]);
}
_mapper.Core = this;
_lagcount = 0;
Cpu = new MOS6502X
{
ReadMemory = this.ReadMemory,
WriteMemory = this.WriteMemory,
PeekMemory = this.PeekMemory,
DummyReadMemory = this.ReadMemory,
OnExecFetch = this.ExecFetch
};
if (_game["PAL"])
{
_pal = true;
}
else if (_game["NTSC"])
{
_pal = false;
}
else
{
_pal = DetectPal(_game, Rom);
}
_tia = new TIA(this, _pal, Settings.SECAMColors);
_tia.GetFrameRate(out CoreComm.VsyncNum, out CoreComm.VsyncDen);
// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
_dcfilter = DCFilter.AsISoundProvider(_tia, 256);
M6532 = new M6532(this);
// Set up the system state here. for instance..
// Read from the reset vector for where to start
Cpu.PC = (ushort)(ReadMemory(0x1FFC) + (ReadMemory(0x1FFD) << 8)); // set the initial PC
// Show mapper class on romstatusdetails
CoreComm.RomStatusDetails =
string.Format(
"{0}\r\nSHA1:{1}\r\nMD5:{2}\r\nMapper Impl \"{3}\"",
this._game.Name,
Rom.HashSHA1(),
Rom.HashMD5(),
_mapper.GetType());
}
private void HardReset()
{
Ram = new byte[128];
_mapper.HardReset();
Cpu = new MOS6502X
{
ReadMemory = this.ReadMemory,
WriteMemory = this.WriteMemory,
PeekMemory = this.PeekMemory,
DummyReadMemory = this.ReadMemory,
OnExecFetch = this.ExecFetch
};
_tia.Reset();
M6532 = new M6532(this);
Cpu.PC = (ushort)(ReadMemory(0x1FFC) + (ReadMemory(0x1FFD) << 8)); // set the initial PC
// as it turns out, the stack pointer cannot be set to 0 for some games as they do not initilize it themselves.
// some documentation seems to indicate it should beset to FD, but currently there is no documentation of the 6532
// executing a reset sequence at power on, but it's needed so let's hard code it for now
Cpu.S = 0xFD;
}
