dword scanX(const char *s)
{
    dword r = 0;
    for(int i = 0; i < 8; i++) {
        r = (r << 4) | (*s >= '0' && *s <= '9' ?      *s - '0' :
                        *s >= 'A' && *s <= 'F' ? 10 + *s - 'A' :
                        *s >= 'a' && *s <= 'f' ? 10 + *s - 'a' : 0);
        s++;
    }
    return r;
}