From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: trouble accessing dos high memory
Date: Mon, 26 May 2003 23:25:07 CDT
Organization: Rice University, Houston, TX
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> Curiously, we still get a protection fault when
> running in DOS (not windows) mode.  Someone probably knows why this
> might be the case, but at this point I'm not concerned since the code
> is running fine from Win98 dos prompt.  WFR

If your program hooks hardware interrupts, and doesn't lock the memory,
this could cause a page fault under DOS.  Since Windows doesn't have to
use DOS I/O or BIOS, this isn't a problem to be concerned about if you
always run under Windows.

The other problem might be a stray pointer (which are checked more
vigorously under DOS).  If this is the problem you really should fix it.