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Path: utzoo!watmath!clyde!rutgers!cbmvax!grr
From: grr@cbmvax.UUCP
Newsgroups: comp.unix.xenix
Subject: Re: Request for help in adding terminals to XENIX
Message-ID: <1322@cbmvax.cbmvax.cbm.UUCP>
Date: Sat, 31-Jan-87 13:44:18 EST
Article-I.D.: cbmvax.1322
Posted: Sat Jan 31 13:44:18 1987
Date-Received: Sat, 31-Jan-87 20:38:50 EST
References: <661@imsvax.UUCP> <1320@cadovax.UUCP> <155@micropen> <267@rabbit1.UUCP> <1157@steinmetz.steinmetz.UUCP> <459@catnip.UUCP>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 21

In article <459@catnip.UUCP> ben@catnip.UUCP (Bennett Broder) writes:
>In article <1157@steinmetz.steinmetz.UUCP> davidsen@kbsvax.UUCP (william E Davidsen) writes:
>>I just wish wish Xenix supported 19.2kb...
>
>I notice that you can specify a baud rate of EXTA or EXTB to either stty
>or getty.  These are not well documented in the manuals.  I have tried
>sttying to them, but they don't currently represent any baud rate supported
>by my terminal.  Anybody know what these are for?  Maybe it is possible to
>define one of these to be 19200?
>Ben Broder {ihnp4,decvax} !hjuxa!catnip!ben

In the 'real world' if you have 19,200 BPS, it takes the place of, or is
equivalent to EXTA.  On the old PDP-11 interfaces just had a '1 of n'
selection where EXTA and EXTB didn't have assigned speeds, but could be
jumpered to random bit-rates.  On the PC, the rates are established by
loading a divisor into the INS8250 chip.  If EXTA doesn't give you 19200,
then you should be able to patch the divisor table to suit...
-- 
George Robbins - now working for,	uucp: {ihnp4|seismo|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@seismo.css.GOV
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)