*BSD News Article 33843


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From: stark!gene@newsserv.cs.sunysb.edu (Gene Stark)
Newsgroups: comp.os.386bsd.misc
Subject: Re: tip at 38400+
Date: 2 Aug 94 08:00:40
Organization: Gene Stark's home system
Lines: 17
Distribution: world
Message-ID: <STARK!GENE.94Aug2080040@stark.uucp>
References: <31gbj7$n1p@sundog.tiac.net> <31geil$g3e@mozo.cc.purdue.edu>
NNTP-Posting-Host: home.stark.cs.sunysb.edu
In-reply-to: willeyma@sage.cc.purdue.edu's message of 31 Jul 1994 15:04:53 GMT

In article <31geil$g3e@mozo.cc.purdue.edu> willeyma@sage.cc.purdue.edu (Mark Willey) writes:

   Consider yourself lucky.  I can't go faster than 9600 bps!  This is because I
   have some cheap-o 16450 UARTs on my motherboard.  What type of UARTs do you
   and the Linux box have?  What you need is 16550.  (Under NetBSD, it tells you
   when you're booting what chips you have.  I dunno about FreeBSD.  Anyhow, the
   new version of Net fixes many of these problems, but 19,200 is still a no-go.
   One solution is to get an "AST" card that has 4 16550-buffered UART com ports
   on it.  I think they're about $50...  I will do this in January when I will
   need those com ports again.

FreeBSD 1.1.1.5 (and probably versions back to 1.0.2 from last September)
will go as fast as you like with 16450's.  I regularly use PPP at 38400
(limited by the speed of the Sparc at the other end).  But 57600 and 115K
also work OK.

							- Gene Stark