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gambattehawk: add slightly more intelligible error messages on bad mapper number load attempt

This commit is contained in:
goyuken 2012-09-24 20:20:21 +00:00
parent 36df8e4aab
commit b6f6b9a5db
1 changed files with 52 additions and 0 deletions
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52
BizHawk.Emulation/Consoles/Nintendo/Gameboy/Gambatte.cs
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@ -28,6 +28,8 @@ namespace BizHawk.Emulation.Consoles.GB
public Gameboy(GameInfo game, byte[] romdata)
{
ThrowExceptionForBadRom(romdata);
GambatteState = LibGambatte.gambatte_create();
if (GambatteState == IntPtr.Zero)
@ -147,8 +149,58 @@ namespace BizHawk.Emulation.Consoles.GB
}
/// <summary>
/// throw exception with intelligible message on some kinds of bad rom
/// </summary>
/// <param name="romdata"></param>
static void ThrowExceptionForBadRom(byte[] romdata)
{
if (romdata.Length < 0x148)
throw new Exception("ROM is far too small to be a valid GB\\GBC rom!");
switch (romdata[0x147])
{
case 0x00: break;
case 0x01: break;
case 0x02: break;
case 0x03: break;
case 0x05: break;
case 0x06: break;
case 0x08: break;
case 0x09: break;
case 0x0b: throw new Exception("\"MM01\" Mapper not supported!");
case 0x0c: throw new Exception("\"MM01\" Mapper not supported!");
case 0x0d: throw new Exception("\"MM01\" Mapper not supported!");
case 0x0f: break;
case 0x10: break;
case 0x11: break;
case 0x12: break;
case 0x13: break;
case 0x15: throw new Exception("\"MBC4\" Mapper not supported!");
case 0x16: throw new Exception("\"MBC4\" Mapper not supported!");
case 0x17: throw new Exception("\"MBC4\" Mapper not supported!");
case 0x19: break;
case 0x1a: break;
case 0x1b: break;
case 0x1c: break; // rumble
case 0x1d: break; // rumble
case 0x1e: break; // rumble
case 0x20: throw new Exception("\"MBC6\" Mapper not supported!");
case 0x22: throw new Exception("\"MBC7\" Mapper not supported!");
case 0xfc: throw new Exception("\"Pocket Camera\" Mapper not supported!");
case 0xfd: throw new Exception("\"Bandai TAMA5\" Mapper not supported!");
case 0xfe: throw new Exception("\"HuC3\" Mapper not supported!");
case 0xff: break;
default: throw new Exception(string.Format("Unknown mapper: {0:x2}", romdata[0x147]));
}
return;
}
public int Frame { get; set; }