Exemplo n.º 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 0x0008:                            // SuperGame
                    result = new Mapper0008(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);
            }
        }
Exemplo n.º 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);
        }