private static uint ReadOpcodeNumber(MemoryScanner scanner)
{
var firstByte = scanner.PeekByte();
if ((firstByte & 0xC0) == 0xC0)
{
return(scanner.NextDWord() & 0x0fffffffu);
}
if ((firstByte & 0x80) == 0x80)
{
return(scanner.NextWord() & 0x3fffu);
}
return(scanner.NextByte() & 0x7fu);
}
