Message-Id:	<m0x6xMU-000S23C@inti.edu.ar>
Comments:	Authenticated sender is <salvador AT natacha DOT inti DOT edu DOT ar>
From:	"Salvador Eduardo Tropea (SET)" <salvador AT inti DOT edu DOT ar>
Organization:	INTI
To:	johan AT technologist DOT com (Johan Levin), djgpp AT delorie DOT com
Date:	Fri, 5 Sep 1997 15:43:56 +0000
MIME-Version:	1.0
Subject:	Re: Q: DMA buffer allocation

johan AT technologist DOT com (Johan Levin) wrote:

> I wish to allocate a DMA buffer.
> How do I do that in DJGPP?
Take a look at Allegro, is a good example.
 
> Must DMA buffers be in the low 1 MB?
For 8 bits DMA? yes. For 16 bits DMA under 16Mb ... in practice you'll use ever 
under 1Mb.

> 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.
Take a look to Allegro.

SET 
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