Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!ucsd!ucsdhub!hp-sdd!hplabs!hpfcso!hpfcmgw!hpfcse!hpuecoz!hpuecoa!speclab!rclark
From: rclark@speclab.bgp-usgs.gov (Roger N. Clark)
Newsgroups: comp.sys.hp
Subject: Re: 2 serial port questions (HP 9000/835 HP-UX)
Message-ID: <210044@speclab.bgp-usgs.gov>
Date: 15 Feb 90 15:13:27 GMT
References: <4685@aplcen.apl.jhu.edu>
Organization: U.S. Geological Survey, Branch of Geophysics, Denver
Lines: 13

> 1) Are the serial ports on my 9000/835S really able to communicate at 19.2K?

> 2) One serial port is connected to a Laserjet (the old kind). Can I get any
>    kind of xon/xoff type support? I'd like for print jobs to get queued and

I have an 825 and run a laserjet series II at 19.2 K baud with x-on
and x-off.  It works just fine.  On the RS232 port, I run only pins
2, 3, and 7, so I never see things like out of paper reported by
lpstat (actually that would be nice--if someone knows how to do it I'll
make a new cable).  With x-on/x-off, the printer does stop and wait for
new paper to be loaded and doesn't lose anything.  Also, the 19.2 K line
is at least 100 feet long (the printer is on a different floor from the
computer).  The Mux is a standard 6-channel.