void Init(GameInfo game, byte[] rom)
{
Controller = NullController.GetNullController();
Cpu = new HuC6280(MemoryCallbacks);
VCE = new VCE();
VDC1 = new VDC(this, Cpu, VCE);
PSG = new HuC6280PSG();
SCSI = new ScsiCDBus(this, disc);
Cpu.Logger = (s) => Tracer.Put(s);
if (TurboGrafx)
{
Ram = new byte[0x2000];
Cpu.ReadMemory21 = ReadMemory;
Cpu.WriteMemory21 = WriteMemory;
Cpu.WriteVDC = VDC1.WriteVDC;
soundProvider = PSG;
CDAudio = new CDAudio(null, 0);
}
else if (SuperGrafx)
{
VDC2 = new VDC(this, Cpu, VCE);
VPC = new VPC(this, VDC1, VDC2, VCE, Cpu);
Ram = new byte[0x8000];
Cpu.ReadMemory21 = ReadMemorySGX;
Cpu.WriteMemory21 = WriteMemorySGX;
Cpu.WriteVDC = VDC1.WriteVDC;
soundProvider = PSG;
CDAudio = new CDAudio(null, 0);
}
else if (TurboCD)
{
Ram = new byte[0x2000];
CDRam = new byte[0x10000];
ADPCM = new ADPCM(this, SCSI);
Cpu.ReadMemory21 = ReadMemoryCD;
Cpu.WriteMemory21 = WriteMemoryCD;
Cpu.WriteVDC = VDC1.WriteVDC;
CDAudio = new CDAudio(disc);
SetCDAudioCallback();
PSG.MaxVolume = short.MaxValue * 3 / 4;
SoundMixer = new SoundMixer(PSG, CDAudio, ADPCM);
SoundSynchronizer = new MetaspuSoundProvider(ESynchMethod.ESynchMethod_V);
soundProvider = SoundSynchronizer;
Cpu.ThinkAction = (cycles) => { SCSI.Think(); ADPCM.Think(cycles); };
}
if (rom.Length == 0x60000)
{
// 384k roms require special loading code. Why ;_;
// In memory, 384k roms look like [1st 256k][Then full 384k]
RomData = new byte[0xA0000];
var origRom = rom;
for (int i = 0; i < 0x40000; i++)
{
RomData[i] = origRom[i];
}
for (int i = 0; i < 0x60000; i++)
{
RomData[i + 0x40000] = origRom[i];
}
RomLength = RomData.Length;
}
else if (rom.Length > 1024 * 1024)
{
// If the rom is bigger than 1 megabyte, switch to Street Fighter 2 mapper
Cpu.ReadMemory21 = ReadMemorySF2;
Cpu.WriteMemory21 = WriteMemorySF2;
RomData = rom;
RomLength = RomData.Length;
// user request: current value of the SF2MapperLatch on the tracelogger
Cpu.Logger = (s) => Tracer.Put(new TraceInfo
{
Disassembly = string.Format("{0:X1}:{1}", SF2MapperLatch, s),
RegisterInfo = ""
});
}
else
{
// normal rom.
RomData = rom;
RomLength = RomData.Length;
}
if (game["BRAM"] || Type == NecSystemType.TurboCD)
{
BramEnabled = true;
BRAM = new byte[2048];
// pre-format BRAM. damn are we helpful.
BRAM[0] = 0x48; BRAM[1] = 0x55; BRAM[2] = 0x42; BRAM[3] = 0x4D;
BRAM[4] = 0x00; BRAM[5] = 0x88; BRAM[6] = 0x10; BRAM[7] = 0x80;
}
if (game["SuperSysCard"])
{
SuperRam = new byte[0x30000];
}
if (game["ArcadeCard"])
{
ArcadeRam = new byte[0x200000];
ArcadeCard = true;
ArcadeCardRewindHack = _settings.ArcadeCardRewindHack;
for (int i = 0; i < 4; i++)
{
ArcadePage[i] = new ArcadeCardPage();
}
}
if (game["PopulousSRAM"])
{
PopulousRAM = new byte[0x8000];
Cpu.ReadMemory21 = ReadMemoryPopulous;
Cpu.WriteMemory21 = WriteMemoryPopulous;
}
// the gamedb can force sprite limit on, ignoring settings
if (game["ForceSpriteLimit"] || game.NotInDatabase)
{
ForceSpriteLimit = true;
}
if (game["CdVol"])
{
CDAudio.MaxVolume = int.Parse(game.OptionValue("CdVol"));
}
if (game["PsgVol"])
{
PSG.MaxVolume = int.Parse(game.OptionValue("PsgVol"));
}
if (game["AdpcmVol"])
{
ADPCM.MaxVolume = int.Parse(game.OptionValue("AdpcmVol"));
}
// the gamedb can also force equalizevolumes on
if (TurboCD && (_settings.EqualizeVolume || game["EqualizeVolumes"] || game.NotInDatabase))
{
SoundMixer.EqualizeVolumes();
}
// Ok, yes, HBlankPeriod's only purpose is game-specific hax.
// 1) At least they're not coded directly into the emulator, but instead data-driven.
// 2) The games which have custom HBlankPeriods work without it, the override only
// serves to clean up minor gfx anomalies.
// 3) There's no point in haxing the timing with incorrect values in an attempt to avoid this.
// The proper fix is cycle-accurate/bus-accurate timing. That isn't coming to the C#
// version of this core. Let's just acknolwedge that the timing is imperfect and fix
// it in the least intrusive and most honest way we can.
if (game["HBlankPeriod"])
{
VDC1.HBlankCycles = game.GetIntValue("HBlankPeriod");
}
// This is also a hack. Proper multi-res/TV emulation will be a native-code core feature.
if (game["MultiResHack"])
{
VDC1.MultiResHack = game.GetIntValue("MultiResHack");
}
Cpu.ResetPC();
Tracer = new TraceBuffer {
Header = Cpu.TraceHeader
};
var ser = new BasicServiceProvider(this);
ServiceProvider = ser;
ser.Register <ITraceable>(Tracer);
ser.Register <IDisassemblable>(Cpu);
ser.Register <IVideoProvider>((IVideoProvider)VPC ?? VDC1);
SetupMemoryDomains();
}
public SMS(CoreComm comm, GameInfo game, byte[] rom, object settings, object syncSettings)
{
ServiceProvider = new BasicServiceProvider(this);
Settings = (SMSSettings)settings ?? new SMSSettings();
SyncSettings = (SMSSyncSettings)syncSettings ?? new SMSSyncSettings();
CoreComm = comm;
MemoryCallbacks = new MemoryCallbackSystem();
IsGameGear = game.System == "GG";
IsSG1000 = game.System == "SG";
RomData = rom;
Tracer = new TraceBuffer();
(ServiceProvider as BasicServiceProvider).Register <ITraceable>(Tracer);
if (RomData.Length % BankSize != 0)
{
Array.Resize(ref RomData, ((RomData.Length / BankSize) + 1) * BankSize);
}
RomBanks = (byte)(RomData.Length / BankSize);
Region = DetermineDisplayType(SyncSettings.DisplayType, game.Region);
if (game["PAL"] && Region != DisplayType.PAL)
{
Region = DisplayType.PAL;
CoreComm.Notify("Display was forced to PAL mode for game compatibility.");
}
if (IsGameGear)
{
Region = DisplayType.NTSC; // all game gears run at 60hz/NTSC mode
}
CoreComm.VsyncNum = Region == DisplayType.NTSC ? 60 : 50;
CoreComm.VsyncDen = 1;
RegionStr = SyncSettings.ConsoleRegion;
if (RegionStr == "Auto")
{
RegionStr = DetermineRegion(game.Region);
}
if (game["Japan"] && RegionStr != "Japan")
{
RegionStr = "Japan";
CoreComm.Notify("Region was forced to Japan for game compatibility.");
}
if ((game.NotInDatabase || game["FM"]) && SyncSettings.EnableFM && !IsGameGear)
{
HasYM2413 = true;
}
if (Controller == null)
{
Controller = NullController.GetNullController();
}
Cpu = new Z80A();
Cpu.RegisterSP = 0xDFF0;
Cpu.ReadHardware = ReadPort;
Cpu.WriteHardware = WritePort;
Cpu.MemoryCallbacks = MemoryCallbacks;
Vdp = new VDP(this, Cpu, IsGameGear ? VdpMode.GameGear : VdpMode.SMS, Region);
(ServiceProvider as BasicServiceProvider).Register <IVideoProvider>(Vdp);
PSG = new SN76489();
YM2413 = new YM2413();
SoundMixer = new SoundMixer(YM2413, PSG);
if (HasYM2413 && game["WhenFMDisablePSG"])
{
SoundMixer.DisableSource(PSG);
}
ActiveSoundProvider = HasYM2413 ? (ISoundProvider)SoundMixer : PSG;
SystemRam = new byte[0x2000];
if (game["CMMapper"])
{
InitCodeMastersMapper();
}
else if (game["CMMapperWithRam"])
{
InitCodeMastersMapperRam();
}
else if (game["ExtRam"])
{
InitExt2kMapper(int.Parse(game.OptionValue("ExtRam")));
}
else if (game["KoreaMapper"])
{
InitKoreaMapper();
}
else if (game["MSXMapper"])
{
InitMSXMapper();
}
else if (game["NemesisMapper"])
{
InitNemesisMapper();
}
else if (game["TerebiOekaki"])
{
InitTerebiOekaki();
}
else
{
InitSegaMapper();
}
if (Settings.ForceStereoSeparation && !IsGameGear)
{
if (game["StereoByte"])
{
ForceStereoByte = byte.Parse(game.OptionValue("StereoByte"));
}
PSG.StereoPanning = ForceStereoByte;
}
if (SyncSettings.AllowOverlock && game["OverclockSafe"])
{
Vdp.IPeriod = 512;
}
if (Settings.SpriteLimit)
{
Vdp.SpriteLimit = true;
}
if (game["3D"])
{
IsGame3D = true;
}
if (game["BIOS"])
{
Port3E = 0xF7; // Disable cartridge, enable BIOS rom
InitBiosMapper();
}
else if (game.System == "SMS")
{
BiosRom = comm.CoreFileProvider.GetFirmware("SMS", RegionStr, false);
if (BiosRom != null && (game["RequireBios"] || SyncSettings.UseBIOS))
{
Port3E = 0xF7;
}
if (BiosRom == null && game["RequireBios"])
{
throw new MissingFirmwareException("BIOS image not available. This game requires BIOS to function.");
}
if (SyncSettings.UseBIOS && BiosRom == null)
{
CoreComm.Notify("BIOS was selected, but rom image not available. BIOS not enabled.");
}
}
if (game["SRAM"])
{
SaveRAM = new byte[int.Parse(game.OptionValue("SRAM"))];
}
else if (game.NotInDatabase)
{
SaveRAM = new byte[0x8000];
}
SetupMemoryDomains();
//this manages the linkage between the cpu and mapper callbacks so it needs running before bootup is complete
((ICodeDataLogger)this).SetCDL(null);
(ServiceProvider as BasicServiceProvider).Register <IDisassemblable>(new Disassembler());
}