cCall [pPortGetQueueStatus], <hPort, <OFFSET32 cmst>> or eax, eax jz error_handler
Called by _VCOMM_GetCommQueueStatus to retrieve information about the status of a communications channel and the amount of data in the receive and transmit queues. Uses the C calling convention. Must be callable at interrupt time.
hPort
Address of a _PORTINFORMATION structure returned by the PortOpen function.
cmst
Address of a _COMSTAT structure that receives status information.
See also _COMSTAT, _PORTINFORMATION, PortOpen, _VCOMM_GetCommQueueStatus