public static NesCart LoadFromFile(Nes nes, string filename)
{
var fileContents = System.IO.File.ReadAllBytes(filename);
var position = 0;
var header = ReadHeader(fileContents.AsSpan(0, 16));
position += 16;
if (header.hasTrainer)
{
position += 512;
}
var prgRomSize = 16 * 1024 * header.PrgRomPages;
var prgRom = fileContents.AsSpan(position, prgRomSize);
position += prgRomSize;
var chrRomSize = 8 * 1024 * header.ChrRomPages;
var chrRom = fileContents.AsSpan(position, chrRomSize);
return(new NesCart(
System.IO.Path.GetFileName(filename),
header,
prgRom.ToArray(),
chrRom.ToArray(),
new byte[NesConsts.PrgPageSize + 1],
NesCartMapper.Build(nes, 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;
}
