Xref:	news2.mv.net comp.os.msdos.djgpp:3284
From:	Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: giving back dpmi memory??
Date:	Tue, 30 Apr 1996 09:34:05 CDT
Organization:	Rice University, Houston, Texas
Lines:	29
Message-ID:	<318624dd.sandmann@clio.rice.edu>
References:	<Pine DOT BSF DOT 3 DOT 91 DOT 960429160620 DOT 629C-100000 AT yoss DOT canweb DOT net>
Reply-To:	sandmann AT clio DOT rice DOT edu
NNTP-Posting-Host:	clio.rice.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

> All I know is that other programs can't find free XMS/EMS memory. I'm using
> cwsdpmi. When I spawn the dos program "mem", every byte of memory 
> (conventional, upper, and extended) is counted as used. 

This depends on your memory configuration.  If you have a VCPI memory
manager (recent emm386/qemm/etc) loaded which pools XMS/EMS memory then
this works fine, since CWSDPMI asks the VCPI memory manager for pages
one at a time.  If you need more memory than you have, then there won't
be any left.  If you use an early emm386 (Win 3.x or DOS 5) it won't 
pool either (but you can manually fix some XMS to be saved).  If you only 
have HIMEM, CWSDPMI will use it all (since it doesn't handle XMS fragmenting).

If you need extra memory for a program, either use V1.x (which forces a
swap of memory on XMS systems) or buy more ram and a decent memory manager.

> When I try to run win (3.11) it swaps CONSTANTLY.

This means you don't have enough RAM for what you are trying to run.  Buy
more, no workaround.

> When I try to run other programs
> which are 16-bit real mode that don't swap, and do depend on XMS or EMS,
> it complains that there isn't enough free memory and I should uninstall
> some drivers or buy more ram.

So, the software told you the answer - the last 3 words.  If software is 
well designed it can handle virtual memory if it's available.  It seems 
the software you are trying to run can't, so you need to upgrade the 
hardware or software, one of the two.

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