private void HardReset()
{
_ram = new byte[128];
_mapper.HardReset();
Cpu = new MOS6502X
{
ReadMemory = ReadMemory,
WriteMemory = WriteMemory,
PeekMemory = PeekMemory,
DummyReadMemory = ReadMemory,
OnExecFetch = 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;
SetupMemoryDomains();
}
private void MakeTrace(IntPtr data)
{
int[] s = new int[7];
Marshal.Copy(data, s, 0, 7);
byte a = (byte)s[0];
byte x = (byte)s[1];
byte y = (byte)s[2];
ushort sp = (ushort)s[3];
ushort pc = (ushort)s[4];
byte p = (byte)s[5];
byte opcode = (byte)s[6];
int notused = 0;
string opcodeStr = MOS6502X.Disassemble(pc, out notused, (address) => _memoryDomains.SystemBus.PeekByte(address));
Tracer.Put(new TraceInfo
{
Disassembly = string.Format("{0:X4} {1}", pc, opcodeStr).PadRight(26),
RegisterInfo = string.Format(
"SP:{0:X2} A:{1:X2} P:{2:X2} X:{3:X2} Y:{4:X2}",
sp,
a,
p,
x,
y)
});
}
private void MakeTrace(IntPtr data)
{
int[] s = new int[7];
Marshal.Copy(data, s, 0, 7);
byte a = (byte)s[0];
byte x = (byte)s[1];
byte y = (byte)s[2];
ushort sp = (ushort)s[3];
ushort pc = (ushort)s[4];
byte p = (byte)s[5];
byte opcode = (byte)s[6];
int notused = 0;
string opcodeStr = MOS6502X.Disassemble(pc, out notused, (address) => _memoryDomains.SystemBus.PeekByte(address));
Tracer.Put(new TraceInfo
{
Disassembly = $"{pc:X4}: {opcodeStr}".PadRight(26),
RegisterInfo = string.Join(" ",
$"A:{a:X2}",
$"X:{x:X2}",
$"Y:{y:X2}",
$"P:{p:X2}",
$"SP:{sp:X2}")
});
}
public Chip6510()
{
// configure cpu r/w
_cpu = new MOS6502X <CpuLink>(new CpuLink(this));
// perform hard reset
HardReset();
}
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();
}
private void HardReset()
{
_ram = new byte[128];
_mapper.HardReset();
Cpu = new MOS6502X <CpuLink>(new CpuLink(this));
_tia.Reset();
_m6532 = new M6532(this);
SetupMemoryDomains();
cyc_counter = 0;
}
// ------------------------------------
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 <CpuLink>(new CpuLink(this))
{
NMI = false
};
_ram = new int[0x800];
Via0 = Chip6522.Create(ViaReadClock, ViaReadData, ViaReadAtn, 8);
Via1 = Chip6522.Create(ReadVia1PrA, ReadVia1PrB);
_cpuClockNum = clockNum;
_driveCpuClockNum = clockDen * 16000000; // 16mhz
}
private void RebootCore()
{
// Regenerate mapper here to make sure its state is entirely clean
_mapper = CreateMapper(this, _game.GetOptions()["m"], Rom.Length);
_lagCount = 0;
Cpu = new MOS6502X <CpuLink>(new CpuLink(this));
if (_game["PAL"])
{
_pal = true;
}
else if (_game["NTSC"])
{
_pal = false;
}
else
{
_pal = DetectPal(_game, Rom);
}
// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
_tia = new TIA(this, _pal, Settings.SECAMColors);
_dcfilter = new DCFilter(_tia, 256);
_m6532 = new M6532(this);
HardReset();
RomDetails = $"{_game.Name}\r\n{SHA1Checksum.ComputePrefixedHex(Rom)}\r\n{MD5Checksum.ComputePrefixedHex(Rom)}\r\nMapper Impl \"{_mapper.GetType()}\"";
// Some games (ex. 3D tic tac toe), turn off the screen for extended periods, so we need to allow for this here.
if (_game.GetOptions().TryGetValue("SP_FRAME", out var spFrameStr) && spFrameStr == "true")
{
SP_FRAME = true;
}
// Some games wait for reset to be unpressed before turning the screen back on, hack unset it if needed
if (_game.GetOptions().TryGetValue("SP_RESET", out var spResetStr) && spResetStr == "true")
{
SP_RESET = true;
}
// Ditto select (ex. Karate)
if (_game.GetOptions().TryGetValue("SP_SELECT", out var spSelectStr) && spSelectStr == "true")
{
SP_SELECT = true;
}
}
private void RebootCore()
{
// Regenerate mapper here to make sure its state is entirely clean
_mapper = CreateMapper(this, _game.GetOptions()["m"], Rom.Length);
_lagCount = 0;
Cpu = new MOS6502X <CpuLink>(new CpuLink(this));
if (_game["PAL"])
{
_pal = true;
}
else if (_game["NTSC"])
{
_pal = false;
}
else
{
_pal = DetectPal(_game, Rom);
}
// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
_tia = new TIA(this, _pal, Settings.SECAMColors);
_dcfilter = new DCFilter(_tia, 256);
_m6532 = new M6532(this);
HardReset();
RomDetails = $"{_game.Name}\r\nSHA1:{Rom.HashSHA1()}\r\nMD5:{Rom.HashMD5()}\r\nMapper Impl \"{_mapper.GetType()}\"";
// Some games (ex. 3D tic tac toe), turn off the screen for extended periods, so we need to allow for this here.
if (_game.GetOptions().ContainsKey("SP_FRAME"))
{
if (_game.GetOptions()["SP_FRAME"] == "true")
{
SP_FRAME = true;
}
}
if (_game.GetOptions().ContainsKey("SP_RESET"))
{
if (_game.GetOptions()["SP_RESET"] == "true")
{
SP_RESET = true;
}
}
}
private void HardReset()
{
_ram = new byte[128];
_mapper.HardReset();
Cpu = new MOS6502X
{
ReadMemory = ReadMemory,
WriteMemory = WriteMemory,
PeekMemory = PeekMemory,
DummyReadMemory = ReadMemory,
OnExecFetch = ExecFetch
};
_tia.Reset();
_m6532 = new M6532(this);
SetupMemoryDomains();
cyc_counter = 0;
}
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()
{
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 A7800Hawk(CoreComm comm, byte[] rom, A7800Hawk.A7800Settings settings, A7800Hawk.A7800SyncSettings syncSettings)
{
var ser = new BasicServiceProvider(this);
maria = new Maria();
tia = new TIA();
m6532 = new M6532();
pokey = new Pokey();
cpu = new MOS6502X <CpuLink>(new CpuLink(this));
maria = new Maria
{
ReadMemory = ReadMemory
};
_blip.SetRates(1789773, 44100);
_settings = (A7800Settings)settings ?? new A7800Settings();
_syncSettings = (A7800SyncSettings)syncSettings ?? new A7800SyncSettings();
_controllerDeck = new A7800HawkControllerDeck(_syncSettings.Port1, _syncSettings.Port2);
var highscoreBios = comm.CoreFileProvider.GetFirmware(new("A78", "Bios_HSC"), "Some functions may not work without the high score BIOS.");
var palBios = comm.CoreFileProvider.GetFirmware(new("A78", "Bios_PAL"), "The game will not run if the correct region BIOS is not available.");
var ntscBios = comm.CoreFileProvider.GetFirmware(new("A78", "Bios_NTSC"), "The game will not run if the correct region BIOS is not available.");
byte[] header = new byte[128];
bool is_header = false;
if (rom.Length % 1024 == 128)
{
Console.WriteLine("128 byte header detected");
byte[] newrom = new byte[rom.Length - 128];
is_header = true;
Buffer.BlockCopy(rom, 0, header, 0, 128);
Buffer.BlockCopy(rom, 128, newrom, 0, newrom.Length);
rom = newrom;
}
_isPAL = false;
// look up hash in gamedb to see what mapper to use
// if none found default is zero
// also check for PAL region
s_mapper = null;
var hash_md5 = MD5Checksum.ComputePrefixedHex(rom);
var gi = Database.CheckDatabase(hash_md5);
if (gi != null)
{
var dict = gi.GetOptions();
if (dict.ContainsKey("PAL"))
{
_isPAL = true;
}
if (!dict.TryGetValue("board", out s_mapper))
{
throw new Exception("No Board selected for this game");
}
// check if the game uses pokey or RAM
if (dict.TryGetValue("RAM", out var cartRAMStr))
{
int.TryParse(cartRAMStr, out cart_RAM);
}
if (dict.TryGetValue("Pokey", out var pokeyStr))
{
bool.TryParse(pokeyStr, out is_pokey);
}
if (dict.TryGetValue("Pokey_450", out var pokey450Str))
{
bool.TryParse(pokey450Str, out is_pokey_450);
}
// some games will not function with the high score bios
// if such a game is being played, tell the user and disable it
if (dict.TryGetValue("No_HS", out var noHSStr))
{
bool.TryParse(noHSStr, out var no_hs);
if (no_hs)
{
Console.WriteLine("This game is incompatible with the High Score BIOS, disabling it");
highscoreBios = null;
}
}
}
else if (is_header)
{
Console.WriteLine("ROM not in DB, inferring mapper info from header");
byte cart_1 = header[0x35];
byte cart_2 = header[0x36];
_isPAL = (header[0x39] > 0);
if (cart_2.Bit(1))
{
if (cart_2.Bit(3))
{
s_mapper = "2";
}
else
{
s_mapper = "1";
}
if (cart_2.Bit(2))
{
cart_RAM = 8;
// the homebrew game serpentine requires extra RAM, but in the alternative style
if (hash_md5 == RomChecksums.Serpentine)
{
cart_RAM = 16;
}
}
}
else
{
s_mapper = "0";
}
if (cart_2.Bit(0))
{
is_pokey = true;
}
// the homebrew game serpentine requires the pokey chip to be available at the alternative location 0x450
if (cart_2.Bit(6))
{
is_pokey_450 = true;
}
}
else
{
throw new Exception("ROM not in gamedb and has no header");
}
// some games that use the Super Game mapper only have 4 banks, so let's set a flag to limit bank size
if (rom.Length < 0x14000)
{
small_flag = true;
// additionally, PAL Karateka has bank 6 (actually 2) at 0x4000
if (hash_md5 == RomChecksums.KaratekaPAL)
{
PAL_Kara = true;
}
}
_rom = rom;
Reset_Mapper(s_mapper);
_hsbios = highscoreBios;
_bios = _isPAL ? palBios : ntscBios;
if (_bios == null)
{
throw new MissingFirmwareException("The BIOS corresponding to the region of the game you loaded is required to run Atari 7800 games.");
}
// set up palette and frame rate
if (_isPAL)
{
_frameHz = 50;
_screen_width = 320;
_screen_height = 313;
_vblanklines = 20;
maria._palette = PALPalette;
}
else
{
_frameHz = 60;
_screen_width = 320;
_screen_height = 263;
_vblanklines = 20;
maria._palette = NTSCPalette;
}
maria.Core = this;
m6532.Core = this;
tia.Core = this;
pokey.Core = this;
ser.Register <IVideoProvider>(this);
ser.Register <ISoundProvider>(this);
ServiceProvider = ser;
_tracer = new TraceBuffer(cpu.TraceHeader);
ser.Register <ITraceable>(_tracer);
ser.Register <IStatable>(new StateSerializer(SyncState));
SetupMemoryDomains();
ser.Register <IDisassemblable>(cpu);
HardReset();
}
private 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;
// Special Sega Mapper which has swapped banks
case "F8_sega":
_mapper = new mF8_sega();
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 <CpuLink>(new CpuLink(this));
if (_game["PAL"])
{
_pal = true;
}
else if (_game["NTSC"])
{
_pal = false;
}
else
{
_pal = DetectPal(_game, Rom);
}
// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
_tia = new TIA(this, _pal, Settings.SECAMColors);
_dcfilter = new DCFilter(_tia, 256);
_m6532 = new M6532(this);
HardReset();
// Show mapper class on romstatusdetails
CoreComm.RomStatusDetails = $"{this._game.Name}\r\nSHA1:{Rom.HashSHA1()}\r\nMD5:{Rom.HashMD5()}\r\nMapper Impl \"{_mapper.GetType()}\"";
// Some games (ex. 3D tic tac toe), turn off the screen for extended periods, so we need to allow for this here.
if (_game.GetOptionsDict().ContainsKey("SP_FRAME"))
{
if (_game.GetOptionsDict()["SP_FRAME"] == "true")
{
SP_FRAME = true;
}
}
if (_game.GetOptionsDict().ContainsKey("SP_RESET"))
{
if (_game.GetOptionsDict()["SP_RESET"] == "true")
{
SP_RESET = true;
}
}
}
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);
}
}
if (_isVS)
{
ControllerDefinition.BoolButtons.Add("Insert Coin P1");
ControllerDefinition.BoolButtons.Add("Insert Coin P2");
ControllerDefinition.BoolButtons.Add("Service Switch");
}
}
// 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();
// apu has some specific power up bahaviour that we will emulate here
apu.NESHardReset();
if (SyncSettings.InitialWRamStatePattern != null && SyncSettings.InitialWRamStatePattern.Any())
{
for (int i = 0; i < 0x800; i++)
{
ram[i] = SyncSettings.InitialWRamStatePattern[i % SyncSettings.InitialWRamStatePattern.Count];
}
}
else
{
// 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();
// some boards cannot have specific values in RAM upon initialization
// Let's hard code those cases here
// these will be defined through the gameDB exclusively for now.
if (cart.DB_GameInfo != null)
{
if (cart.DB_GameInfo.Hash == "60FC5FA5B5ACCAF3AEFEBA73FC8BFFD3C4DAE558" || // Camerica Golden 5
cart.DB_GameInfo.Hash == "BAD382331C30B22A908DA4BFF2759C25113CC26A" || // Camerica Golden 5
cart.DB_GameInfo.Hash == "40409FEC8249EFDB772E6FFB2DCD41860C6CCA23" // Camerica Pegasus 4-in-1
)
{
ram[0x701] = 0xFF;
}
}
}
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 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;
// Special Sega Mapper which has swapped banks
case "F8_sega":
_mapper = new mF8_sega();
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);
}
// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
_tia = new TIA(this, _pal, Settings.SECAMColors, CoreComm.VsyncRate > 55.0 ? 735 : 882);
_tia.GetFrameRate(out CoreComm.VsyncNum, out CoreComm.VsyncDen);
_dcfilter = new DCFilter(_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());
// 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;
}
public void HardReset()
{
cpu = new MOS6502X <CpuLink>(new CpuLink(this))
{
BCD_Enabled = false
};
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);
}
}
if (_isVS)
{
ControllerDefinition.BoolButtons.Add("Insert Coin P1");
ControllerDefinition.BoolButtons.Add("Insert Coin P2");
ControllerDefinition.BoolButtons.Add("Service Switch");
}
}
// Add in the reset timing float control for subneshawk
if (using_reset_timing && (ControllerDefinition.FloatControls.Count() == 0))
{
ControllerDefinition.FloatControls.Add("Reset Cycle");
ControllerDefinition.FloatRanges.Add(new ControllerDefinition.FloatRange(0, 0, 500000));
}
// 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;
VsyncNum = 50;
VsyncDen = 1;
cpuclockrate = 1662607;
cpu_sequence = cpu_sequence_PAL;
_display_type = DisplayType.PAL;
ClockRate = 5320342.5;
break;
case Common.DisplayType.NTSC:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.NTSC;
VsyncNum = 39375000;
VsyncDen = 655171;
cpuclockrate = 1789773;
cpu_sequence = cpu_sequence_NTSC;
ClockRate = 5369318.1818181818181818181818182;
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;
VsyncNum = 50;
VsyncDen = 1;
cpuclockrate = 1773448;
cpu_sequence = cpu_sequence_NTSC;
_display_type = DisplayType.Dendy;
ClockRate = 5320342.5;
break;
default:
throw new Exception("Unknown displaytype!");
}
blip.SetRates((uint)cpuclockrate, 44100);
BoardSystemHardReset();
// apu has some specific power up bahaviour that we will emulate here
apu.NESHardReset();
if (SyncSettings.InitialWRamStatePattern != null && SyncSettings.InitialWRamStatePattern.Any())
{
for (int i = 0; i < 0x800; i++)
{
ram[i] = SyncSettings.InitialWRamStatePattern[i % SyncSettings.InitialWRamStatePattern.Count];
}
}
else
{
// 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();
// some boards cannot have specific values in RAM upon initialization
// Let's hard code those cases here
// these will be defined through the gameDB exclusively for now.
if (cart.DB_GameInfo != null)
{
if (cart.DB_GameInfo.Hash == "60FC5FA5B5ACCAF3AEFEBA73FC8BFFD3C4DAE558" || // Camerica Golden 5
cart.DB_GameInfo.Hash == "BAD382331C30B22A908DA4BFF2759C25113CC26A" || // Camerica Golden 5
cart.DB_GameInfo.Hash == "40409FEC8249EFDB772E6FFB2DCD41860C6CCA23" // Camerica Pegasus 4-in-1
)
{
ram[0x701] = 0xFF;
}
if (cart.DB_GameInfo.Hash == "68ABE1E49C9E9CCEA978A48232432C252E5912C0") // Dancing Blocks
{
ram[0xEC] = 0;
ram[0xED] = 0;
}
if (cart.DB_GameInfo.Hash == "00C50062A2DECE99580063777590F26A253AAB6B") // Silva Saga
{
for (int i = 0; i < Board.WRAM.Length; i++)
{
Board.WRAM[i] = 0xFF;
}
}
}
}
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 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()
{
cpu = new MOS6502X <CpuLink>(new CpuLink(this))
{
BCD_Enabled = false
};
ppu = new PPU(this);
ram = new byte[0x800];
CIRAM = new byte[0x800];
// don't replace the magicSoundProvider on reset, as it's not needed
// if (magicSoundProvider != null) magicSoundProvider.Dispose();
// set up region
switch (_display_type)
{
case DisplayType.PAL:
apu = new APU(this, apu, true);
ppu.region = PPU.Region.PAL;
cpuclockrate = 1662607;
VsyncNum = cpuclockrate * 2;
VsyncDen = 66495;
cpu_sequence = cpu_sequence_PAL;
_display_type = DisplayType.PAL;
ClockRate = 5320342.5;
break;
case DisplayType.NTSC:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.NTSC;
cpuclockrate = 1789773;
VsyncNum = cpuclockrate * 2;
VsyncDen = 59561;
cpu_sequence = cpu_sequence_NTSC;
ClockRate = 5369318.1818181818181818181818182;
break;
// this is in bootgod, but not used at all
case DisplayType.Dendy:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.Dendy;
cpuclockrate = 1773448;
VsyncNum = cpuclockrate;
VsyncDen = 35464;
cpu_sequence = cpu_sequence_NTSC;
_display_type = DisplayType.Dendy;
ClockRate = 5320342.5;
break;
default:
throw new Exception("Unknown displaytype!");
}
blip.SetRates((uint)cpuclockrate, 44100);
BoardSystemHardReset();
// apu has some specific power up bahaviour that we will emulate here
apu.NESHardReset();
if (SyncSettings.InitialWRamStatePattern != null && SyncSettings.InitialWRamStatePattern.Any())
{
for (int i = 0; i < 0x800; i++)
{
ram[i] = SyncSettings.InitialWRamStatePattern[i % SyncSettings.InitialWRamStatePattern.Count];
}
}
else
{
// 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();
// some boards cannot have specific values in RAM upon initialization
// Let's hard code those cases here
// these will be defined through the gameDB exclusively for now.
var hash = cart.GameInfo?.Hash; // SHA1 or MD5 (see NES.IdentifyFromGameDB)
if (hash is null)
{
// short-circuit
}
else if (hash is RomChecksums.CamericaGolden5 or RomChecksums.CamericaGolden5Overdump or RomChecksums.CamericaPegasus4in1)
{
ram[0x701] = 0xFF;
}
public string Disassemble(MemoryDomain m, uint addr, out int length)
{
return(MOS6502X.Disassemble((ushort)addr, out length, a => unchecked ((byte)Peek(a))));
}
public void HardReset()
{
cpu = new MOS6502X <CpuLink>(new CpuLink(this))
{
BCD_Enabled = false
};
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())
{
Name = "NES Controller"
};
// controls other than the deck
ControllerDefinition.BoolButtons.Add("Power");
ControllerDefinition.BoolButtons.Add("Reset");
if (Board is FDS b)
{
ControllerDefinition.BoolButtons.Add("FDS Eject");
for (int i = 0; i < b.NumSides; i++)
{
ControllerDefinition.BoolButtons.Add("FDS Insert " + i);
}
}
if (_isVS)
{
ControllerDefinition.BoolButtons.Add("Insert Coin P1");
ControllerDefinition.BoolButtons.Add("Insert Coin P2");
ControllerDefinition.BoolButtons.Add("Service Switch");
}
}
// Add in the reset timing axis for subneshawk
if (using_reset_timing && ControllerDefinition.Axes.Count == 0)
{
ControllerDefinition.AddAxis("Reset Cycle", 0.RangeTo(500000), 0);
}
// don't replace the magicSoundProvider on reset, as it's not needed
// if (magicSoundProvider != null) magicSoundProvider.Dispose();
// set up region
switch (_display_type)
{
case DisplayType.PAL:
apu = new APU(this, apu, true);
ppu.region = PPU.Region.PAL;
cpuclockrate = 1662607;
VsyncNum = cpuclockrate * 2;
VsyncDen = 66495;
cpu_sequence = cpu_sequence_PAL;
_display_type = DisplayType.PAL;
ClockRate = 5320342.5;
break;
case DisplayType.NTSC:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.NTSC;
cpuclockrate = 1789773;
VsyncNum = cpuclockrate * 2;
VsyncDen = 59561;
cpu_sequence = cpu_sequence_NTSC;
ClockRate = 5369318.1818181818181818181818182;
break;
// this is in bootgod, but not used at all
case DisplayType.Dendy:
apu = new APU(this, apu, false);
ppu.region = PPU.Region.Dendy;
cpuclockrate = 1773448;
VsyncNum = cpuclockrate;
VsyncDen = 35464;
cpu_sequence = cpu_sequence_NTSC;
_display_type = DisplayType.Dendy;
ClockRate = 5320342.5;
break;
default:
throw new Exception("Unknown displaytype!");
}
blip.SetRates((uint)cpuclockrate, 44100);
BoardSystemHardReset();
// apu has some specific power up bahaviour that we will emulate here
apu.NESHardReset();
if (SyncSettings.InitialWRamStatePattern != null && SyncSettings.InitialWRamStatePattern.Any())
{
for (int i = 0; i < 0x800; i++)
{
ram[i] = SyncSettings.InitialWRamStatePattern[i % SyncSettings.InitialWRamStatePattern.Count];
}
}
else
{
// 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();
// some boards cannot have specific values in RAM upon initialization
// Let's hard code those cases here
// these will be defined through the gameDB exclusively for now.
if (cart.GameInfo != null)
{
if (cart.GameInfo.Hash is RomChecksums.CamericaGolden5 or RomChecksums.CamericaGolden5Overdump or RomChecksums.CamericaPegasus4in1)
{
ram[0x701] = 0xFF;
}
else if (cart.GameInfo.Hash == RomChecksums.DancingBlocks)
{
ram[0xEC] = 0;
ram[0xED] = 0;
}
else if (cart.GameInfo.Hash == RomChecksums.SilvaSaga)
{
for (int i = 0; i < Board.Wram.Length; i++)
{
Board.Wram[i] = 0xFF;
}
}
}
public string Disassemble(MemoryDomain m, uint addr, out int length)
{
return(MOS6502X.Disassemble((ushort)addr, out length, CpuPeek));
}
public A7800Hawk(CoreComm comm, GameInfo game, byte[] rom, string gameDbFn)
{
var ser = new BasicServiceProvider(this);
maria = new Maria();
tia = new TIA();
m6532 = new M6532();
cpu = new MOS6502X
{
ReadMemory = ReadMemory,
WriteMemory = WriteMemory,
PeekMemory = ReadMemory,
DummyReadMemory = ReadMemory,
OnExecFetch = ExecFetch
};
maria = new Maria
{
ReadMemory = ReadMemory
};
CoreComm = comm;
_controllerDeck = new A7800HawkControllerDeck(_syncSettings.Port1, _syncSettings.Port2);
byte[] highscoreBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_HSC", false, "Some functions may not work without the high score BIOS.");
byte[] palBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_PAL", false, "The game will not run if the correct region BIOS is not available.");
byte[] ntscBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_NTSC", false, "The game will not run if the correct region BIOS is not available.");
if (rom.Length % 1024 == 128)
{
Console.WriteLine("Trimming 128 byte .a78 header...");
byte[] newrom = new byte[rom.Length - 128];
Buffer.BlockCopy(rom, 128, newrom, 0, newrom.Length);
rom = newrom;
}
_isPAL = false;
// look up hash in gamedb to see what mapper to use
// if none found default is zero
// also check for PAL region
string hash_md5 = null;
s_mapper = null;
hash_md5 = "md5:" + rom.HashMD5(0, rom.Length);
var gi = Database.CheckDatabase(hash_md5);
if (gi != null)
{
var dict = gi.GetOptionsDict();
if (dict.ContainsKey("PAL"))
{
_isPAL = true;
}
if (dict.ContainsKey("board"))
{
s_mapper = dict["board"];
}
else
{
throw new Exception("No Board selected for this game");
}
}
else
{
throw new Exception("ROM not in gamedb");
}
Reset_Mapper(s_mapper);
_rom = rom;
_hsbios = highscoreBios;
_bios = _isPAL ? palBios : ntscBios;
if (_bios == null)
{
throw new MissingFirmwareException("The BIOS corresponding to the region of the game you loaded is required to run Atari 7800 games.");
}
// set up palette and frame rate
if (_isPAL)
{
maria._frameHz = 50;
maria._screen_width = 320;
maria._screen_height = 313;
maria._palette = PALPalette;
}
else
{
maria._frameHz = 60;
maria._screen_width = 320;
maria._screen_height = 263;
maria._palette = NTSCPalette;
}
maria.Core = this;
m6532.Core = this;
tia.Core = this;
ser.Register <IVideoProvider>(maria);
ser.Register <ISoundProvider>(tia);
ServiceProvider = ser;
_tracer = new TraceBuffer {
Header = cpu.TraceHeader
};
ser.Register <ITraceable>(_tracer);
SetupMemoryDomains();
HardReset();
}
public A7800Hawk(CoreComm comm, GameInfo game, byte[] rom, string gameDbFn, object settings, object syncSettings)
{
var ser = new BasicServiceProvider(this);
maria = new Maria();
tia = new TIA();
m6532 = new M6532();
pokey = new Pokey();
cpu = new MOS6502X <CpuLink>(new CpuLink(this));
maria = new Maria
{
ReadMemory = ReadMemory
};
CoreComm = comm;
_blip.SetRates(1789773, 44100);
_settings = (A7800Settings)settings ?? new A7800Settings();
_syncSettings = (A7800SyncSettings)syncSettings ?? new A7800SyncSettings();
_controllerDeck = new A7800HawkControllerDeck(_syncSettings.Port1, _syncSettings.Port2);
byte[] highscoreBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_HSC", false, "Some functions may not work without the high score BIOS.");
byte[] palBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_PAL", false, "The game will not run if the correct region BIOS is not available.");
byte[] ntscBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_NTSC", false, "The game will not run if the correct region BIOS is not available.");
byte[] header = new byte[128];
bool is_header = false;
if (rom.Length % 1024 == 128)
{
Console.WriteLine("128 byte header detected");
byte[] newrom = new byte[rom.Length - 128];
is_header = true;
Buffer.BlockCopy(rom, 0, header, 0, 128);
Buffer.BlockCopy(rom, 128, newrom, 0, newrom.Length);
rom = newrom;
}
_isPAL = false;
// look up hash in gamedb to see what mapper to use
// if none found default is zero
// also check for PAL region
string hash_md5 = null;
s_mapper = null;
hash_md5 = "md5:" + rom.HashMD5(0, rom.Length);
var gi = Database.CheckDatabase(hash_md5);
if (gi != null)
{
var dict = gi.GetOptionsDict();
if (dict.ContainsKey("PAL"))
{
_isPAL = true;
}
if (dict.ContainsKey("board"))
{
s_mapper = dict["board"];
}
else
{
throw new Exception("No Board selected for this game");
}
// check if the game uses pokey or RAM
if (dict.ContainsKey("RAM"))
{
int.TryParse(dict["RAM"], out cart_RAM);
Console.WriteLine(cart_RAM);
}
if (dict.ContainsKey("Pokey"))
{
bool.TryParse(dict["Pokey"], out is_pokey);
}
// some games will not function with the high score bios
// if such a game is being played, tell the user and disable it
if (dict.ContainsKey("No_HS"))
{
bool no_hs;
bool.TryParse(dict["No_HS"], out no_hs);
if (no_hs)
{
Console.WriteLine("This game is incompatible with the High Score BIOS, disabling it");
highscoreBios = null;
}
}
}
else if (is_header)
{
Console.WriteLine("ROM not in DB, inferring mapper info from header");
byte cart_1 = header[0x35];
byte cart_2 = header[0x36];
_isPAL = (header[0x39] > 0);
if (cart_2.Bit(1))
{
if (cart_2.Bit(3))
{
s_mapper = "2";
}
else
{
s_mapper = "1";
}
if (cart_2.Bit(2))
{
cart_RAM = 8;
}
}
else
{
s_mapper = "0";
}
if (cart_2.Bit(0))
{
is_pokey = true;
}
}
else
{
throw new Exception("ROM not in gamedb and has no header");
}
// some games that use the Super Game mapper only have 4 banks, so let's set a flag to limit bank size
if (rom.Length < 0x14000)
{
small_flag = true;
// additionally, PAL Karateka has bank 6 (actually 2) at 0x4000
if (rom.HashMD5() == "5E0A1E832BBCEA6FACB832FDE23A440A")
{
PAL_Kara = true;
}
}
_rom = rom;
Reset_Mapper(s_mapper);
_hsbios = highscoreBios;
_bios = _isPAL ? palBios : ntscBios;
if (_bios == null)
{
throw new MissingFirmwareException("The BIOS corresponding to the region of the game you loaded is required to run Atari 7800 games.");
}
// set up palette and frame rate
if (_isPAL)
{
_frameHz = 50;
_screen_width = 320;
_screen_height = 313;
_vblanklines = 20;
maria._palette = PALPalette;
}
else
{
_frameHz = 60;
_screen_width = 320;
_screen_height = 263;
_vblanklines = 20;
maria._palette = NTSCPalette;
}
maria.Core = this;
m6532.Core = this;
tia.Core = this;
pokey.Core = this;
ser.Register <IVideoProvider>(this);
ser.Register <ISoundProvider>(this);
ServiceProvider = ser;
_tracer = new TraceBuffer {
Header = cpu.TraceHeader
};
ser.Register <ITraceable>(_tracer);
SetupMemoryDomains();
ser.Register <IDisassemblable>(cpu);
HardReset();
}
public string Disassemble(MemoryDomain m, uint addr, out int length)
{
return(MOS6502X.Disassemble((ushort)addr, out length, (a) => m.PeekByte(a)));
}