if(memcmp(&buffer_2[0], &non_byteswap, 4) == 0){
        // non-byteswapped rom
        game_byteswap = 0;
    } else if(memcmp(&buffer_2[0], &byteswap, 4) == 0){
        // byteswapped rom
        game_byteswap = 1;
    } else {
        // not a rom!
        return;
    }