Hooked interrupts fail under Windows/DOS

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#1173

From: dueck
Date: Mon, 31 Aug 1992 22:21

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I have a TSR that hooks the clock interrupt (8) in order to
perform a periodic activity. When in the DOS shell under Windows,
another program that depends on the value of the clock bytes in the
DOS segment fails because the clock bytes never get changed.
The second program works properly if the TSR is not loaded before entering
Windows.

Does anyone have an explanation for this behaviour?

Gery Dueck
dueck@brandonu.ca

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Message-ID: <1992Aug31.162117.2194@brandonu.ca>

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Newsgroups: comp.os.msdos.programmer
Subject: Hooked interrupts fail under Windows/DOS
Message-ID: <1992Aug31.162117.2194@brandonu.ca>
From: dueck@brandonu.ca
Date: 31 Aug 92 16:21:16 CST
Organization: Brandon University, Brandon, Manitoba, Canada
Lines: 11