serial printers under microport 386

[David F. Carlson]

In article <2712 at quacky.mips.COM>, menna at mips.COM (Randy Menna) writes:
> I am having some trouble getting serial printers to work under
> microport 386.  I have a compac 386 running 2.2, with 16 computone
> serial ports.  These ports work great when connected to a terminal,
> but I am unable to get them to talk to a serial printer (panisonic 1090i).
> 
> I thought that this meant that the electrical signals weren't correct,
> but if I put a getty on that port, then it prints "login" on the printer,
> and files can also be "cat"ed to the printer.

You must remember that cat(1) does nothing to set up the port for serial
communication.  Use cu(1) or ( stty 1200 ; cat file ) < /dev/ttylp.
Running the stty within the subshell makes its effects apply to the
cat(1).  Otherwise, on close, the port will be reset most likely to 300 baud.

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-- 
David F. Carlson, Micropen, Inc.
micropen!dave at ee.rochester.edu

"The faster I go, the behinder I get." --Lewis Carroll