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From: Terry Lambert <terry@lambert.org>
Message-Id: <199702062257.PAA18137@phaeton.artisoft.com>
Subject: Re: serial ports at 230k
To: lmcsato@LMC.Ericsson.SE (Samy Touati)
Date: Thu, 6 Feb 1997 15:57:30 -0700 (MST)
Cc: terry@lambert.org, pst@jnx.com, hackers@FreeBSD.ORG, bde@FreeBSD.ORG
In-Reply-To: <199702062213.RAA02105@jello.lmc.ericsson.se> from "Samy Touati" at Feb 6, 97 05:13:54 pm
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> So this means that if you put a 16650 UART (it's not a typo) you =
> can still use the same driver and achieve 128k
> unstead of just 115,2k ?

If you change out the clock crystal, yes.  If you don't, you only
get the clock crystal frequency, and baud rates from there down from
cutting the frequency in half for each one.

You *can* change out the clock crystal if you are into hardware
hacking; before there were MIDI cards, a lot of MIDI hackers
changed out the crystal to get MIDI speed, and then used a converter
to drive current loop (MIDI is a current loop interface).


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.