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Date:      Mon, 7 Aug 1995 10:39:39 +0930 (CST)
From:      Michael Smith <msmith@atrad.adelaide.edu.au>
To:        spaz@u.washington.edu (John Utz)
Cc:        questions@freebsd.org
Subject:   Re: 115200 hangs my modem :-(
Message-ID:  <199508070109.KAA21837@genesis.atrad.adelaide.edu.au>
In-Reply-To: <Pine.OSF.3.91j.950806170305.2333B-100000@saul3.u.washington.edu> from "John Utz" at Aug 6, 95 05:08:56 pm

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John Utz stands accused of saying:
> 	I was under the impression that 16550 uarts could run at 115200 
> between modem and machine. true?

It's possiuble to convince a 16550 to clock at ~115200Kbps, yes.  It's a
Really Bad Idea, but people persist in doing it.  (If you want to know why,
read the datasheet.)

> 	mine seems not so blessed. if i try and set seyon or do an stty 
> -f /dev/ttyd2 speed 115200 my modem starts to ignore me :-)

It's quite possible that your modem can't handle the speed.

>  John Utz	spaz@stein.u.washington.edu

-- 
]] Mike Smith, Software Engineer        msmith@atrad.adelaide.edu.au    [[
]] Genesis Software                     genesis@atrad.adelaide.edu.au   [[
]] High-speed data acquisition and                                      [[
]] realtime instrument control          (ph/fax) +61-8-267-3039         [[
]] My car has "demand start" - Terry Lambert                            [[



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