From:	Tim Updegrove <tupdegrove AT lucent DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Need DOS/4G if using DJGPP?
Date:	Mon, 29 Mar 1999 09:38:52 -0500
Organization:	Lucent Technologies
Lines:	15
Message-ID:	<36FF907B.523371FF@lucent.com>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

I'm new to MS-DOS programming but need to write a low level application
to interface with a PCI add-in card which has memory mapped i/o.  I want
to (1) find all PCI cards; (2) find our card; (3) get the memory mapped
address from the Base Address Register; (4) use this address plus an
offset to write/read registers on the PCI card.  I'd like to run in pure
MS-DOS and also in a Windows 98 ms-dos box.

 I suppose a compiler like Watcom C++ 11.0 and Tenberry's DOS/4G (for
DPMI services) could be used but from reading some DJGPP documentation,
DJGPP (and RHIDE for a debugger) would be suitable for my purpose.  Do
you experts agree?  Is there any use for DOS/4G?  Any help would be much
appreciated as I'm a little confused over what type tools (assembler,
higher level compiler, debugger, etc) I'll need (or would be best to be
used) for this project.

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