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From: alexande@drivax.UUCP (Mark Alexander)
Newsgroups: comp.sys.ibm.pc
Subject: Re: MSKERMIT problem with internal modems
Message-ID: <2658@drivax.UUCP>
Date: Fri, 30-Oct-87 14:08:36 EST
Article-I.D.: drivax.2658
Posted: Fri Oct 30 14:08:36 1987
Date-Received: Thu, 5-Nov-87 03:32:48 EST
References: <4326@well.UUCP>
Reply-To: alexande@drivax.UUCP (Mark Alexander)
Organization: Bob-ist Temple of Monterey
Lines: 20
Keywords: MSKERMIT 2.29, AT Clones, Everex 1200 baud modems
Summary: It's the OUT1 signal, not timing

In article <4326@well.UUCP> mandel@well.UUCP (Tom Mandel) writes
about MSKERMIT 2.29 not working with the Everex internal modems.
Then he says:
>Apparently the bug had something to do with UART timing problems.

The problem is not timing.  The problem is that Kermit was turning
on the OUT1 signal in the modem control register.  This had the
effect of disabling the modem (has no effect on an IBM serial
card).  If you have the source to Kermit, the solution is to
change the file MSXIBM.ASM.  Look at the routines SERINI and SERRST,
and find the places where it outputs something to port XFC (where
X is 2 or 3).  Change the value being sent to this port to 0bh
instead of 0fh.

Naturally, the use of the OUT1 signal to disable the modem is
not mentioned in the Everex manual :-( .  It took me about two days
of frustration to figure this one out.
-- 
Mark Alexander	...{hplabs,seismo,sun,ihnp4}!amdahl!drivax!alexande
"Bob-ism: the Faith that changes to meet YOUR needs." -- Bob