// run transactions
        for(dlelement_t* elem = transfer->transactions->head; elem != 0; elem = elem->next)
        {
          #ifdef _UHCI_DIAGNOSIS_
            uint16_t num = inportw(u->bar + UHCI_FRNUM);
            printf("\nFRBADDR: %X  frame pointer: %X frame number: %u", inportl(u->bar + UHCI_FRBASEADD), u->framelistAddrVirt->frPtr[num], num);
          #endif

            timeout = 100; // Wait up to 100 ms
            while(timeout > 0)
            {
                bool b = true;
                for(dlelement_t* elem = transfer->transactions->head; b && elem; elem = elem->next)
                {
                    uhci_transaction_t* uT = ((usb_transaction_t*)elem->data)->data;
                    b = b && !uT->TD->active;
                }
                if(b)
                    break;
                sleepMilliSeconds(10);
                timeout--;
            }
            if(timeout == 0)
            {
                textColor(ERROR);
                printf("\nUHCI: Timeout during waiting for TD execution!");
                textColor(TEXT);
            }

            delay(50000); // pause after transaction
        }
        delay(50000); // pause after transfer