public static NesCartMapper Build(Nes nes, NesCartHeader header)
{
var mapperId = header.MapperNumber;
var mapper = GetMapper(nes, mapperId);
return(mapper);
}
private static NesCartHeader ReadHeader(Span <byte> rom)
{
var fileId = rom.Slice(0, 4).ToArray();
if (!fileId.SequenceEqual(INES_FORMAT))
{
throw new RomFormatException(String.Format("Unsupported ROM type: {0:X}{1:X}{2:X}{3:X}", fileId[0], fileId[1], fileId[2], fileId[3]));
}
var header = new NesCartHeader(
fileId,
rom[4],
rom[5],
rom[6],
rom[7],
rom[8],
rom[9],
rom[10],
rom.Slice(11, 5).ToArray()
);
if (header.isNes20)
{
throw new RomFormatException("iNES 2.0 currently unsupported");
}
return(header);
}
public NesCart(
string filename,
NesCartHeader header,
byte[] prgRom,
byte[] chrRom,
byte[] expansionArea,
NesCartMapper mapper
)
{
this.Filename = filename;
this.Header = header;
this.PrgRom = prgRom;
this.ChrRom = chrRom;
this.ExpansionArea = expansionArea;
this.Mapper = mapper;
}