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From:	Charles Sandmann <sandmann AT praline DOT no DOT NeoSoft DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Locking memory for interrupt routines.
Date:	Wed, 20 Sep 1995 20:59:50 CDT
Organization:	NeoSoft Internet Services +1 713 968 5800
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References:	<811601482 DOT 13133 AT alphdyn DOT demon DOT co DOT uk>
Reply-To:	sandmann AT clio DOT rice DOT edu
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To:	djgpp AT sun DOT soe DOT clarkson DOT edu
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> What I am finding is that my lock function works in a windows DOS box and
> fails when I run the program directly from DOS.

You are not adding the base of the CS/DS selector to the memory, so 
you are locking the wrong place in memory (conventional memory in your
example).

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