## Physical Device Driver Reference

[prev][next][parent][TOC]

### ASYNC_TRANSMITIMM (44h) - Returns

If the call is made with an invalid Data Packet pointer or if there is already another character waiting to be transmitted immediately due to a previous Function 44h request that has not been fulfilled, then a general failure error is reported and this request is ignored. A Transmit Immediate request is considered fulfilled when the character is given to the transmit hardware.