void iopm_fillRange(BYTE pIopm[IOPM_SIZE], PORTRANGE* pRange) {
    BOOL  isBlocked = !pRange->isEnabled; //sanitize
    DWORD i=pRange->first, iAmount=(pRange->last-i)+1;
    DWORD *pdwIopm = (dword*)pdwIopm;

    if (i&31) { //fill unaligned entries
        int iLen = 32-(i&31);
        if (IsBlocked) pdwIopm[i>>5] |= ((DWORD)-1)<<iLen); else pdwIopm[i>>5] &= ~((DWORD)-1)<<iLen);
        i = (i|31)+1 ; iAmount -= iLen;
    }

    i>>=5; //fill bulk entries
    while (iAmount>31) pdwIopm[i++] = (DWORD)(isBlocked?-1:0), iAmount -= 32;

    if (iAmount) { //fill remaining entries
        int iLen = 32-(iAmount);
        if (IsBlocked) pdwIopm(i) |= ((DWORD)-1)>>iLen) else pdwIopm(i) &= ~((DWORD)-1)>>iLen);
    }
}