Write

send output to parallel port

This command causes a stream of characters to be written to the parallel output register. The number of characters is specified in io_Length, unless -1 is used, in which case output is sent until a zero byte occurs in the data. This is independent of, and may be used simultaneously with setting the EOFMODE in io_ParFlags and using the PTermArray to terminate the read or write.

io_Message

mn_ReplyPort initialized

io_Device

set by OpenDevice

io_Unit

set by OpenDevice

io_Command

CMD_WRITE (03)

io_Flags

If IOF_QUICK is set, driver will attempt Quick IO

io_Length

number of characters to transmit, or if set to -1 send until zero byte encountered

io_Data

pointer to block of data to transmit

io_Error

If the Write succeded, then io_Error will be null. If the Write failed, then io_Error will contain an error code.

parallel.device/PDCMD_SETPARAMS