From: Johan Karlsson <k AT sm DOT luth DOT se>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Accessing PCI memory
Date: Tue, 15 Jul 1997 08:26:13 +0200
Organization: Luleå University of Technology
Lines: 36
Message-ID: <33CB1805.3F54BC7E@sm.luth.se>
References: <33CA3306 DOT 2F2E AT signal DOT dra DOT hmg DOT gb>
NNTP-Posting-Host: my21.sm.luth.se
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

Gordon Brown wrote:
> 
> If I have a PCI board located in the PC memory space at 0x3d000000 how
> do I access this memory using DJGPP.
> 
> I am new-ish to DJGPP & PC programming.
> 
> Any help is appreciated,
> 
> G. Brown
> brown AT signal DOT dra DOT hmg DOT gb

Have a look at the FAQ at
http://www.delorie.com/djgpp/v2faq/
specialy
http://www.delorie.com/djgpp/v2faq/faq133.html#Low-level
and
http://www.delorie.com/djgpp/v2faq/faq140.html#Above 1MB

For wrappers se
see http://www.delorie.com/djgpp/doc/incs-2.01/dpmi.h

After this init you can use farptr or movedata
see headerfiles at 
http://www.delorie.com/djgpp/doc/incs-2.01/sys/farptr.h
http://www.delorie.com/djgpp/doc/incs-2.01/sys/movedata.h

Hope this helps, it helped me.

Mail me if you have questions on how I did

MVH 
Johan Karlsson
mailto:k AT sm DOT luth DOT se
Department of Computer Science and Electrical Engineering
Luleå University of Technology, SWEDEN