Example #1
0
        public static CartridgeDevice Load(byte[] crtFile)
        {
            using (var mem = new MemoryStream(crtFile))
            {
                var reader = new BinaryReader(mem);

                if (new string(reader.ReadChars(16)) != "C64 CARTRIDGE   ")
                {
                    return null;
                }

                var chipAddress = new List<int>();
                var chipBank = new List<int>();
                var chipData = new List<int[]>();
                var chipType = new List<int>();

                var headerLength = ReadCRTInt(reader);
                var version = ReadCRTShort(reader);
                var mapper = ReadCRTShort(reader);
                var exrom = reader.ReadByte() != 0;
                var game = reader.ReadByte() != 0;

                // reserved
                reader.ReadBytes(6);

                // cartridge name
                reader.ReadBytes(0x20);

                // skip extra header bytes
                if (headerLength > 0x40)
                {
                    reader.ReadBytes(headerLength - 0x40);
                }

                // read chips
                while (reader.PeekChar() >= 0)
                {
                    if (new string(reader.ReadChars(4)) != "CHIP")
                    {
                        break;
                    }

                    var chipLength = ReadCRTInt(reader);
                    chipType.Add(ReadCRTShort(reader));
                    chipBank.Add(ReadCRTShort(reader));
                    chipAddress.Add(ReadCRTShort(reader));
                    var chipDataLength = ReadCRTShort(reader);
                    chipData.Add(reader.ReadBytes(chipDataLength).Select(x => (int)x).ToArray());
                    chipLength -= chipDataLength + 0x10;
                    if (chipLength > 0)
                        reader.ReadBytes(chipLength);
                }

                if (chipData.Count <= 0)
                {
                    return null;
                }

                CartridgeDevice result;
                switch (mapper)
                {
                    case 0x0000:    // Standard Cartridge
                        result = new Mapper0000(chipAddress, chipData, game, exrom);
                        break;
                    case 0x0001:    // Action Replay (4.2 and up)
                        result = new Mapper0001(chipAddress, chipBank, chipData);
                        break;
                    case 0x0005:    // Ocean
                        result = new Mapper0005(chipAddress, chipBank, chipData);
                        break;
                    case 0x000A:    // Epyx FastLoad
                        result = new Mapper000A(chipData);
                        break;
                    case 0x000B:    // Westermann Learning
                        result = new Mapper000B(chipAddress, chipData);
                        break;
                    case 0x000F:    // C64 Game System / System 3
                        result = new Mapper000F(chipAddress, chipBank, chipData);
                        break;
                    case 0x0011:    // Dinamic
                        result = new Mapper0011(chipAddress, chipBank, chipData);
                        break;
                    case 0x0012:    // Zaxxon / Super Zaxxon
                        result = new Mapper0012(chipAddress, chipBank, chipData);
                        break;
                    case 0x0013:    // Domark
                        result = new Mapper0013(chipAddress, chipBank, chipData);
                        break;
                    case 0x0020:    // EasyFlash
                        result = new Mapper0020(chipAddress, chipBank, chipData);
                        break;
                    case 0x002B:    // Prophet 64
                        result = new Mapper002B(chipAddress, chipBank, chipData);
                        break;
                    default:
                        throw new Exception("This cartridge file uses an unrecognized mapper: " + mapper);
                }
                result.HardReset();

                return result;
            }
        }
Example #2
0
		// ---------------------------------

		public static CartridgeDevice Load(byte[] crtFile)
		{
			var mem = new MemoryStream(crtFile);
			var reader = new BinaryReader(mem);

		    if (new string(reader.ReadChars(16)) != "C64 CARTRIDGE   ")
		    {
		        return null;
		    }

		    var chipAddress = new List<int>();
		    var chipBank = new List<int>();
		    var chipData = new List<int[]>();
		    var chipType = new List<int>();

		    var headerLength = ReadCRTInt(reader);
		    var version = ReadCRTShort(reader);
		    var mapper = ReadCRTShort(reader);
		    var exrom = reader.ReadByte() != 0;
		    var game = reader.ReadByte() != 0;

		    // reserved
		    reader.ReadBytes(6);

		    // cartridge name
		    reader.ReadBytes(0x20);

		    // skip extra header bytes
		    if (headerLength > 0x40)
		    {
		        reader.ReadBytes(headerLength - 0x40);
		    }

		    // read chips
		    while (reader.PeekChar() >= 0)
		    {
		        if (new string(reader.ReadChars(4)) != "CHIP")
		        {
		            break;
		        }

		        var chipLength = ReadCRTInt(reader);
		        chipType.Add(ReadCRTShort(reader));
		        chipBank.Add(ReadCRTShort(reader));
		        chipAddress.Add(ReadCRTShort(reader));
		        var chipDataLength = ReadCRTShort(reader);
		        chipData.Add(reader.ReadBytes(chipDataLength).Select(x => (int)x).ToArray());
		        chipLength -= chipDataLength + 0x10;
		        if (chipLength > 0)
		            reader.ReadBytes(chipLength);
		    }

		    if (chipData.Count <= 0)
		    {
		        return null;
		    }

            CartridgeDevice result;
            switch (mapper)
		    {
		        case 0x0000:
		            result = new Mapper0000(chipAddress, chipBank, chipData, game, exrom);
		            break;
		        case 0x0005:
		            result = new Mapper0005(chipAddress, chipBank, chipData);
		            break;
		        case 0x000B:
		            result = new Mapper000B(chipAddress, chipBank, chipData);
		            break;
		        case 0x000F:
		            result = new Mapper000F(chipAddress, chipBank, chipData);
		            break;
		        case 0x0011:
		            result = new Mapper0011(chipAddress, chipBank, chipData);
		            break;
		        case 0x0012:
		            result = new Mapper0012(chipAddress, chipBank, chipData);
		            break;
		        case 0x0013:
		            result = new Mapper0013(chipAddress, chipBank, chipData);
		            break;
		        case 0x0020:
		            result = new Mapper0020(chipAddress, chipBank, chipData);
		            break;
		        default:
		            throw new Exception("This cartridge file uses an unrecognized mapper: " + mapper);
		    }
		    result.HardReset();

		    return result;
		}