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From: cramer@kontron.UUCP (Clayton Cramer)
Newsgroups: net.micro.pc
Subject: Re: Running IBM serial boards at 19.2KB
Message-ID: <122@kontron.UUCP>
Date: Thu, 25-Apr-85 11:04:40 EDT
Article-I.D.: kontron.122
Posted: Thu Apr 25 11:04:40 1985
Date-Received: Sun, 28-Apr-85 09:07:37 EDT
References: <145@cernvax.UUCP> <138@omen.UUCP> <535@cyb-eng.UUCP>
Distribution: net.micro.pc
Organization: Kontron Electronics, Irvine, CA
Lines: 17

> > The standard IBM serial adapter using the 8250 UART, as well as the
> > serial ports on expansion boards such as AST SIXPACK can be programmed
> > for 19200 and 38400 bits per second.
> 
> Huh?  I quote from page 1-238 of the I.B.M. PC2 Technical Reference manual:
> 
> 	Note:  The maximum operating frequency of the baud generator is
> 	3.1MHz.  In no case should the data rate be greater than 9600 baud.
> 
> Do you know something IBM doesn't?
> 
> Cheers,
> Topher Eliot                                           Cyb Systems, Austin, TX
>          {gatech,ihnp4,nbires,seismo,ucb-vax}!ut-sally!cyb-eng!topher

Probably.  I am using an XT running a VT100 terminal emulator at 19,200 baud
right now.