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Mail Archives: djgpp/1996/12/27/12:47:55

Message-Id: <m0vdaS8-000S1eC@natacha.inti.edu.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT edu DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT natacha DOT inti DOT edu DOT ar>
Organization: INTI
To: hotpulp AT netidea DOT com, djgpp AT delorie DOT com
Date: Fri, 27 Dec 1996 14:36:30 +0000
MIME-Version: 1.0
Subject: Re: DMA transfers

Hi Shawn Betts:

> how do I do a DMA transfer from protected mode memory to, lets say, a
> sound blaster (I'm jsut interested in setting up the DMA).
  The 8 bits DMA can be used in the first Mb of memory, the 16 bit 
DMA in the first 16 Mb (the PCI bus is better, but no sound blaster 
there). As you can't guess about where is your program in memory 
(sure not in the first Mb) you must allocate a buffer in the DOS 
(1st Mb) memory using DPMI calls.

SET 
--------------- 0 --------------------------------
Salvador Eduardo Tropea (SET).
Address: Curapaligue 2124, Caseros, 3 de Febrero
Buenos Aires, (1678), ARGENTINA
TE: +(541) 759 0013

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