From: "T.W. Seddon" <T DOT W DOT Seddon AT ncl DOT ac DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Mapping memory
Date: 4 Nov 1996 19:09:23 GMT
Organization: University of Newcastle upon Tyne
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Message-ID: <55lf13$o51@whitbeck.ncl.ac.uk>
NNTP-Posting-Host: glenb1.ncl.ac.uk
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Apparently-To: djgpp AT delorie DOT com

I've been trying to use the dpmi function (can't remember which one) to 
map MS-DOS memory to a different protected-mode location. Unfortunately 
all my attempts to do this have resulted in a crash. Does CWSDPMI support 
this, or will I have to run under Windows 95 or something like that?

I allocated some memory in the appropriate way (to get a _dpmi_meminfo
structure) and allocated some DOS memory in a similar fashion using the
other function, and then tried to map the DOS memory into the 
protected-mode memory. The result was a crash.

I don't think I'm doing anything wrong... is anyone able to help? 
Unfortunaetly I don't have my source code or any djgpp reference with me 
so I can't remember the function names (they were long with lots of 
underscores though) but the map function I used was the one to map MS-DOS 
memory to a different protected-mode location.

Any help much appreciated. (Hopefully you can understand the above as well!)

--Tom Seddon
T.W.Seddon"ncl.ac.uk