PortTransmitChar

cCall [pPortTransmitChar], <hPort, ch>
or      eax, eax
jz      error_handler
 

Called by the _VCOMM_TransmitCommChar service to send an "immediate" character to a port. The port driver must transmit the specified character before any characters in the transmit queue. Uses the C calling convention. Must be callable at interrupt time.

hPort
Address of a _PORTINFORMATION structure returned by the PortOpen function.
ch
Character to transmit.

See Also

_PORTINFORMATION, PortOpen, _VCOMM_TransmitCommChar