public void Dispose()
{
if (BlipL != null)
{
BlipL.Dispose();
BlipL = null;
}
if (BlipR != null)
{
BlipR.Dispose();
BlipR = null;
}
}
public void GetSamplesSync(out short[] samples, out int nsamp)
{
if (!disablePSG)
{
BlipL.EndFrame(SampleClock);
BlipR.EndFrame(SampleClock);
nsamp = Math.Max(Math.Max(BlipL.SamplesAvailable(), BlipR.SamplesAvailable()), 1);
samples = new short[nsamp * 2];
BlipL.ReadSamplesLeft(samples, nsamp);
BlipR.ReadSamplesRight(samples, nsamp);
ApplyYmAudio(samples);
}
else
{
nsamp = 735;
samples = new short[nsamp * 2];
ApplyYmAudio(samples);
}
SampleClock = 0;
}
public SMS(CoreComm comm, GameInfo game, byte[] rom, SmsSettings settings, SmsSyncSettings syncSettings)
{
var ser = new BasicServiceProvider(this);
ServiceProvider = ser;
Settings = (SmsSettings)settings ?? new SmsSettings();
SyncSettings = (SmsSyncSettings)syncSettings ?? new SmsSyncSettings();
IsGameGear = game.System == "GG";
IsGameGear_C = game.System == "GG";
IsSG1000 = game.System == "SG";
RomData = rom;
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;
comm.Notify("Display was forced to PAL mode for game compatibility.");
}
if (IsGameGear)
{
Region = DisplayType.NTSC; // all game gears run at 60hz/NTSC mode
}
_region = SyncSettings.ConsoleRegion;
if (_region == SmsSyncSettings.Regions.Auto)
{
_region = DetermineRegion(game.Region);
}
if (game["Japan"] && _region != SmsSyncSettings.Regions.Japan)
{
_region = SmsSyncSettings.Regions.Japan;
comm.Notify("Region was forced to Japan for game compatibility.");
}
if (game["Korea"] && _region != SmsSyncSettings.Regions.Korea)
{
_region = SmsSyncSettings.Regions.Korea;
comm.Notify("Region was forced to Korea for game compatibility.");
}
if ((game.NotInDatabase || game["FM"]) && SyncSettings.EnableFm && !IsGameGear)
{
HasYM2413 = true;
}
Cpu = new Z80A
{
ReadHardware = ReadPort,
WriteHardware = WritePort,
FetchMemory = FetchMemory,
ReadMemory = ReadMemory,
WriteMemory = WriteMemory,
MemoryCallbacks = MemoryCallbacks,
OnExecFetch = OnExecMemory
};
if (game["GG_in_SMS"])
{
// skip setting the BIOS because this is a game gear game that puts the system
// in SMS compatibility mode (it will fail the check sum if played on an actual SMS though.)
IsGameGear = false;
IsGameGear_C = true;
game.System = "GG";
Console.WriteLine("Using SMS Compatibility mode for Game Gear System");
}
Vdp = new VDP(this, Cpu, IsGameGear ? VdpMode.GameGear : VdpMode.SMS, Region);
ser.Register <IVideoProvider>(Vdp);
PSG = new SN76489sms();
YM2413 = new YM2413();
//SoundMixer = new SoundMixer(YM2413, PSG);
if (HasYM2413 && game["WhenFMDisablePSG"])
{
disablePSG = true;
}
BlipL.SetRates(3579545, 44100);
BlipR.SetRates(3579545, 44100);
ser.Register <ISoundProvider>(this);
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 if (game["EEPROM"])
{
InitEEPROMMapper();
}
else
{
InitSegaMapper();
}
if (Settings.ForceStereoSeparation && !IsGameGear)
{
if (game["StereoByte"])
{
ForceStereoByte = byte.Parse(game.OptionValue("StereoByte"));
}
PSG.Set_Panning(ForceStereoByte);
}
if (SyncSettings.AllowOverClock && 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" && !game["GG_in_SMS"])
{
BiosRom = comm.CoreFileProvider.GetFirmware("SMS", _region.ToString(), false);
if (BiosRom == null)
{
throw new MissingFirmwareException("No BIOS found");
}
if (!game["RequireBios"] && !SyncSettings.UseBios)
{
// we are skipping the BIOS
// but only if it won't break the game
}
else
{
Port3E = 0xF7;
}
}
if (game["SRAM"])
{
SaveRAM = new byte[int.Parse(game.OptionValue("SRAM"))];
Console.WriteLine(SaveRAM.Length);
}
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);
Tracer = new TraceBuffer {
Header = Cpu.TraceHeader
};
ser.Register(Tracer);
ser.Register <IDisassemblable>(Cpu);
ser.Register <IStatable>(new StateSerializer(SyncState));
Vdp.ProcessOverscan();
Cpu.ReadMemory = ReadMemory;
Cpu.WriteMemory = WriteMemory;
// Z80 SP initialization
// stops a few SMS and GG games from crashing
Cpu.Regs[Cpu.SPl] = 0xF0;
Cpu.Regs[Cpu.SPh] = 0xDF;
if (!IsSG1000)
{
ser.Register <ISmsGpuView>(new SmsGpuView(Vdp));
}
}
public void DiscardSamples()
{
BlipL.Clear();
BlipR.Clear();
SampleClock = 0;
}
public bool FrameAdvance(IController controller, bool render, bool renderSound)
{
_controller = controller;
_lagged = true;
_frame++;
if (!IsGameGear)
{
PSG.Set_Panning(Settings.ForceStereoSeparation ? ForceStereoByte : (byte)0xFF);
}
if (Tracer.Enabled)
{
Cpu.TraceCallback = s => Tracer.Put(s);
}
else
{
Cpu.TraceCallback = null;
}
if (IsGameGear_C == false)
{
Cpu.NonMaskableInterrupt = controller.IsPressed("Pause");
}
else if (!IsGameGear && IsGameGear_C)
{
Cpu.NonMaskableInterrupt = controller.IsPressed("P1 Start");
}
if (IsGame3D && Settings.Fix3D)
{
render = ((Frame & 1) == 0) & render;
}
int scanlinesPerFrame = Vdp.DisplayType == DisplayType.NTSC ? 262 : 313;
Vdp.SpriteLimit = Settings.SpriteLimit;
for (int i = 0; i < scanlinesPerFrame; i++)
{
Vdp.ScanLine = i;
Vdp.RenderCurrentScanline(render);
Vdp.ProcessFrameInterrupt();
Vdp.ProcessLineInterrupt();
ProcessLineControls();
for (int j = 0; j < Vdp.IPeriod; j++)
{
Cpu.ExecuteOne();
PSG.generate_sound();
s_L = PSG.current_sample_L;
s_R = PSG.current_sample_R;
if (s_L != OldSl)
{
BlipL.AddDelta(SampleClock, s_L - OldSl);
OldSl = s_L;
}
if (s_R != OldSr)
{
BlipR.AddDelta(SampleClock, s_R - OldSr);
OldSr = s_R;
}
SampleClock++;
}
if (Vdp.ScanLine == scanlinesPerFrame - 1)
{
Vdp.ProcessGGScreen();
Vdp.ProcessOverscan();
}
}
if (_lagged)
{
_lagCount++;
_isLag = true;
}
else
{
_isLag = false;
}
return(true);
}
