130 lines
3.6 KiB
C#
130 lines
3.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using BizHawk.Common.BufferExtensions;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Atari.Atari2600
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{
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[Core(
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"Atari2600Hawk",
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"Micro500, Alyosha, adelikat, natt",
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isPorted: false,
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isReleased: true)]
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[ServiceNotApplicable(typeof(ISaveRam), typeof(IDriveLight))]
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public partial class Atari2600 : IEmulator, IStatable, IDebuggable, IInputPollable, IBoardInfo,
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IRegionable, ICreateGameDBEntries, ISettable<Atari2600.A2600Settings, Atari2600.A2600SyncSettings>
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{
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[CoreConstructor("A26")]
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public Atari2600(CoreComm comm, GameInfo game, byte[] rom, object settings, object syncSettings)
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{
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var ser = new BasicServiceProvider(this);
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ServiceProvider = ser;
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_ram = new byte[128];
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CoreComm = comm;
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Settings = (A2600Settings)settings ?? new A2600Settings();
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SyncSettings = (A2600SyncSettings)syncSettings ?? new A2600SyncSettings();
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_controllerDeck = new Atari2600ControllerDeck(SyncSettings.Port1, SyncSettings.Port2);
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_leftDifficultySwitchPressed = SyncSettings.LeftDifficulty;
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_rightDifficultySwitchPressed = SyncSettings.RightDifficulty;
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Rom = rom;
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_game = game;
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if (!game.GetOptionsDict().ContainsKey("m"))
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{
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game.AddOption("m", DetectMapper(rom));
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}
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if (Rom.HashSHA1() == "3A77DB43B6583E8689435F0F14AA04B9E57BDDED" ||
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Rom.HashSHA1() == "E986E1818E747BEB9B33CE4DFF1CDC6B55BDB620" ||
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Rom.HashSHA1() == "982B8016B393A9AA7DD110295A53C4612ECF2141")
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{
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game.RemoveOption("m");
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game.AddOption("m", "F8_sega");
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}
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Console.WriteLine("Game uses mapper " + game.GetOptionsDict()["m"]);
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Console.WriteLine(Rom.HashSHA1());
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RebootCore();
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SetupMemoryDomains();
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Tracer = new TraceBuffer { Header = Cpu.TraceHeader };
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ser.Register<IDisassemblable>(Cpu);
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ser.Register<ITraceable>(Tracer);
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ser.Register<IVideoProvider>(_tia);
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ser.Register<ISoundProvider>(_dcfilter);
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}
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private readonly Atari2600ControllerDeck _controllerDeck;
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// IRegionable
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public DisplayType Region => _pal ? DisplayType.PAL : DisplayType.NTSC;
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// ITraceable
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private ITraceable Tracer { get; }
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// ICreateGameDBEntries
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public CompactGameInfo GenerateGameDbEntry()
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{
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return new CompactGameInfo
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{
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Name = _game.Name,
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System = "A26",
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MetaData = "m=" + _mapper.GetType().ToString().Split('.').ToList().Last(),
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Hash = Rom.HashSHA1(),
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Region = _game.Region,
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Status = RomStatus.Unknown
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};
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}
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// IBoardInfo
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public string BoardName => _mapper.GetType().Name;
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private static bool DetectPal(GameInfo game, byte[] rom)
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{
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// force NTSC mode for the new core we instantiate
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var newgame = game.Clone();
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if (newgame["PAL"])
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{
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newgame.RemoveOption("PAL");
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}
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if (!newgame["NTSC"])
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{
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newgame.AddOption("NTSC");
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}
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// give the emu a minimal of input\output connections so it doesn't crash
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var comm = new CoreComm(null, null);
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// here we advance past start up irregularities to see how long a frame is based on calls to Vsync
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// we run 72 frames, then run 270 scanlines worth of cycles.
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// if we don't hit a new frame, we can be pretty confident we are in PAL
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using (Atari2600 emu = new Atari2600(new CoreComm(null, null), newgame, rom, null, null))
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{
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for (int i = 0; i < 72; i++)
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{
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emu.FrameAdvance(NullController.Instance, false, false);
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}
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for (int i = 0; i < 61560; i++)
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{
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emu.Cycle();
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}
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bool pal = !emu._tia.New_Frame;
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Console.WriteLine("PAL Detection: {0}", pal);
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return pal;
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}
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}
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}
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}
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