From:	aho450s AT nic DOT smsu DOT edu (Tony O'Bryan)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: far pointer - passing to realmode
Date:	Tue, 25 Feb 1997 11:58:34 GMT
Organization:	Southwest Missouri State University
Lines:	11
Message-ID:	<3312d310.1350851@ursa.smsu.edu>
References:	<199702251036 DOT LAA06425 AT gil DOT physik DOT rwth-aachen DOT de>
NNTP-Posting-Host:	forseti.i128.smsu.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On Tue, 25 Feb 1997 10:36:24 GMT, Christoph Kukulies
<kuku AT gil DOT physik DOT rwth-aachen DOT de> wrote:

>realmode program? Would that work at all or would it be better to
>use some low memory area as the transfer buffer where seg:offset
>is know beforehand.

To pass parameters from protected mode to real mode (and vice-versa), you must
use some area of conventional memory as the go-between.  Look in the FAQ under
section 18.2 (How to use buffers with DOS/BIOS services), and look for the
transfer buffer.  It's aliased as "__tb".

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