ansi.sys incompatible with previewers

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#1253

From: Allan Adler
Date: Thu, 03 Sep 1992 05:47

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I installed various TeX previewers on an 80386 MSDOS machine with AMI bios.
They worked fine until I installed ANSI.SYS to make demacs work. Once
I installed ANSI.SYS, they would show the first page of the 
file but the arrow keys and numeric keypad didn't function any
more to move around in the document. Eventually, I got around this
without understanding it any better by replacing ANSI.SYS with
TANSI.SYS (Trident ANSI.SYS), which turned out to still work with demacs
and to be compatible with the previewers.

For some reason, today I noticed that the previewers were not compatible with
TANSI.SYS any more.

Can anyone think of any reason why TeX previewers should be incompatible with
ANSI.SYS?

Is ther any way to figure out systematically what the source of the
incompatibility is?

Allan Adler
ara@altdorf.ai.mit.edu

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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!mintaka.lcs.mit.edu!zurich.ai.mit.edu!ara
From: ara@zurich.ai.mit.edu (Allan Adler)
Newsgroups: comp.os.msdos.programmer
Subject: ansi.sys incompatible with previewers
Message-ID: <ARA.92Sep3004704@camelot.ai.mit.edu>
Date: 3 Sep 92 05:47:04 GMT
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Organization: M.I.T. Artificial Intelligence Lab.
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