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Subject:	Re: Technical question : DMA use
From:	Robert Collins <rbcollins AT cygwin DOT com>
To:	Sylvain Petreolle <spetreolle AT yahoo DOT fr>
Cc:	cygwin AT cygwin DOT com
In-Reply-To:	<20020804001611.41685.qmail@web10102.mail.yahoo.com>
References:	<20020804001611 DOT 41685 DOT qmail AT web10102 DOT mail DOT yahoo DOT com>
Date:	04 Aug 2002 10:35:11 +1000
Message-Id:	<1028421312.8966.146.camel@lifelesswks>
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On Sun, 2002-08-04 at 10:16, Sylvain Petreolle wrote:
> Hi list,
>=20
> I'm building a dvd player.
> Dvd is played fine except that it is _extremely_ slow.
>=20
> I had the same issue running it under Linux. The fix was to enable the
> DMA support via hdparm in the IDE harddisk configuration.
>=20
> My question will be :
> Does Cygwin allow the use of the DMA channel to read files/devices ?

Cygwin uses the underlying IO calls of windows. If you enable DMA for
the windows device, cygwin should use DMA.

Rob


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