From:	Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Accessing 4GB w/o DPMI
Date:	Fri, 23 Aug 2002 09:42:32 CDT
Organization:	Rice University, Houston TX
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> > While I haven't tried it, I don't know why you wouldn't be able to
> > access all 4Gb physical memory in a machine with the PMODE DPMI
> > provider.  

> Last year, I've tried PMODE 1.3 using the DOS version coming with Win98
> on a 2GB machine and it was working well. 

I've tested PMODE with 2Gb physical.  I tested CWSDPMI with 2Gb physical 
and 1Gb swap, for a total of 3Gb physical address.

When you go from 2Gb to 4Gb there may be some signed/unsigned issues,
and those haven't been tested that I know of.

You can't sbrk() more than 2Gb - 64K at any one time, so if anyone 
does have a machine with 3Gb of memory the test program has to know
to do the allocations in smaller chunks.

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