85 lines
1.6 KiB
C#
85 lines
1.6 KiB
C#
using System.IO;
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using System.Text;
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namespace BizHawk.Emulation.Cores.Computers.Commodore64
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{
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public static class C64FormatFinder
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{
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public static C64Format GetFormat(byte[] data)
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{
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if (data == null || data.Length < 0x10)
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{
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return C64Format.Unknown;
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}
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using (var mem = new MemoryStream(data))
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{
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var reader = new BinaryReader(mem);
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var header = Encoding.GetEncoding(437).GetString(reader.ReadBytes(0x10));
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if (header.StartsWith("C64 CARTRIDGE "))
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{
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return C64Format.CRT;
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}
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if (header.StartsWith("GCR-1541"))
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{
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return C64Format.G64;
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}
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if (header.StartsWith("C64S tape image "))
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{
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return C64Format.T64;
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}
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if (header.StartsWith("C64-TAPE-RAW"))
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{
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return C64Format.TAP;
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}
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if (header.StartsWith("C64File"))
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{
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return C64Format.P00; // poo :)
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}
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if (header.StartsWith("P64-1541"))
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{
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return C64Format.P64;
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}
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if (data[0] == 0x43 && data[1] == 0x15 && data[2] == 0x41 && data[3] == 0x64)
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{
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return C64Format.X64;
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}
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if (data.Length == 174848 || data.Length == 175531 || data.Length == 196608 || data.Length == 197376)
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{
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return C64Format.D64;
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}
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if (data.Length == 349696 || data.Length == 351062)
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{
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return C64Format.D71;
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}
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if (data.Length == 533248)
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{
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return C64Format.D80;
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}
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if (data.Length == 819200 || data.Length == 822400)
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{
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return C64Format.D81;
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}
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if (data.Length == 1066496)
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{
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return C64Format.D82;
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}
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}
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return C64Format.Unknown;
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}
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}
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}
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