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Date:      Wed, 11 Mar 1998 05:54:16 +0100 (MET)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        J.Klaus@sh.cvut.cz (Jaroslav Klaus)
Cc:        multimedia@FreeBSD.ORG
Subject:   Re: GUS PnP driver
Message-ID:  <199803110454.FAA10482@labinfo.iet.unipi.it>
In-Reply-To: <XFMail.980311000721.J.Klaus@sh.cvut.cz> from "Jaroslav Klaus" at Mar 11, 98 00:07:02 am

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> > >    also has a little problem with audio. In my opinion there is a
> > >    interrupt or dma problem. I don't know exactly (I'm not an expert).
> >  
> >  can you give more detail on what the problem is ? (i mean -- the
> >  symptoms)
> 
> Sometimes it produce a little crack in sound during intensive HD operations>.
> But now I think it could be also mainboard problem...

there are two possible sources:
1) delay in serving interrupts from the card -- especially with IDE
disks, transfer is controlled by the CPU which menas that you might
have delays as large as a millisecond or so in serving the audio
interrupt,.

2) electrical interference from the disk cables or power supply.

i tend to suspect the second one.

	cheers
	luigi

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