From:	johan AT technologist DOT com (Johan Levin)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Q: DMA buffer allocation
Date:	1 Sep 1997 17:08:26 GMT
Organization:	-
Lines:	18
Message-ID:	<5uesqa$p9u@mn5.swip.net>
NNTP-Posting-Host:	dialup92-6-16.swipnet.se
Mime-Version:	1.0
NNTP-Posting-User:	s-49839
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I wish to allocate a DMA buffer.
How do I do that in DJGPP?

Must DMA buffers be in the low 1 MB?

I know that DMA buffers may not cross a 64k border.
If I allocate a buffer in DJGPP how do I know that it doesn't cross
such a border - virtual memory and paging tend to make you lose
control of these things.

TIA

-- 
Johan Levin                         Sweden
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homepage: http://home2.swipnet.se/~w-21572
mail    : mailto:johan AT technologist DOT com

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