From: "Charles Sandmann" <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Accessing last KB of 4GB
Date: Tue, 31 Oct 2000 14:49:48
Organization: Aspen Technology, Inc.
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> For accensing last KB o 4GB addressing space I need a 32 bit compiler
> (like DJGPP) or I can use a 16 bit compiler in dos protect mode
> initializing correctly the GDT!!!!1

You can certainly do this in DJGPP (use CWSDPMI r5 under DOS to avoid
an r4 bug) - an example program snippet was provided on this forum
less than a month ago.

You could actually do this from any protected mode environment if you
had the ability to map the memory and set up an ldt to point to it.