From: "David.M.Reed" <dave AT earthling DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Virtual memory??
Date: Sun, 09 Mar 1997 13:19:07 +0000
Organization: Loughborough University, UK.
Message-ID: <3322B8CB.4164@earthling.net>
Reply-To: dave AT earthling DOT net
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I have only had DJGPP for a couple of days, and I have noticed some very
strange things happening when I try to allocate large amounts of memory.

I tried to allocate a very large block of memory with malloc()/xmalloc()
- about 8 Mb (on a 16Mb PC), and then fill this memory with data.

If I run it through DOS with CWSDPMI, it runs fine, but when running
through Win95, after about 2Mb, it starts using virtual memory.
(horrible hard disk accesses..)

Is there anyway I can disable virtual memory, and just exit the program
if not enough physical RAM is available?

Does anyone know how I can allocate more physical RAM under Win95?  (I
heard that 'Quake' was written in DJGPP and this manages to allocate
plenty of RAM through Win95)

I have tried fiddling with the Win95 memory properties for rhide.exe,
and this does not seem to have helped.