Flush

clear all queued I/O requests for the serial port

This command purges the read and write request queues for the serial device. Flush will not affect active requests.

io_Message

mn_ReplyPort initialized

io_Device

set by OpenDevice

io_Unit

set by OpenDevice

io_Command

CMD_FLUSH

Error

if the Flush succeded, then io_Error will be null. If the Flush failed, then the io_Error will be non-zero.