Xref: utzoo comp.unix.xenix:3894 comp.unix.microport:2033
Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!bellcore!texbell!uhnix1!nuchat!steve
From: steve@nuchat.UUCP (Steve Nuchia)
Newsgroups: comp.unix.xenix,comp.unix.microport
Subject: Re: Serial Boards
Message-ID: <2657@nuchat.UUCP>
Date: 11 Nov 88 16:36:48 GMT
References: <343@puck.UUCP>
Organization: Public Access - Houston, Tx
Lines: 18

From article <343@puck.UUCP>, by asp@puck.UUCP (Andy Puchrik):
[UART replacement]
> What kinds of boards would this work for?  I have a Digicomm 4-port board.
> Is this one dumb enough to be a candidate for a chip(s) upgrade?

Any board that presents regular 8250 register files in I/O space;
DOS COM1-COM4 types, for instance.  If it has a processor on it
it is too smart.  Mother-board serial chips are good candidates, too.
Non-intel systems using the 8250 or equivalent could benefit too.
but you'll have some porting to do.

To safely replace the UART it needs to be socketed; I've got internal
modems that have surface mounted 8250s and I understand that the telebit
internal has an 8250 soldered down.  Oh Well.
-- 
Steve Nuchia	    | [...] but the machine would probably be allowed no mercy.
uunet!nuchat!steve  | In other words then, if a machine is expected to be
(713) 334 6720	    | infallible, it cannot be intelligent.  - Alan Turing, 1947