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Date:      Fri, 3 Jan 2003 15:12:39 -0600 (CST)
From:      Josh Tolbert <hemi@scoundrelz.net>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        Terry Lambert <tlambert2@mindspring.com>, <freebsd-alpha@FreeBSD.ORG>
Subject:   Re: Sound frustration.
Message-ID:  <20030103150747.P25893-100000@view.scoundrelz.net>
In-Reply-To: <15893.61977.617126.551476@grasshopper.cs.duke.edu>

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Hi,

On Fri, 3 Jan 2003, Andrew Gallatin wrote:

>
> Terry Lambert writes:
>  > Andrew Gallatin wrote:
>  > > Terry Lambert writes:
>  > >  > Andrew Gallatin wrote:
>  > >  > > isab0@pci0:8:0: class=0x000000 card=0x00000000 chip=0x04848086 rev=0x43 hdr=0x00
>  > >  > >     vendor   = 'Intel Corporation'
>  > >  > >     device   = '82378ZB/IB,82379AB PCI to ISA Bridge, System I/O'
>  > >  > >     class    = old
>  > >  > >     subclass = non-VGA display device
>  > >  >
>  > >  > What chip is implementing your keyboard controller?
>  > >
>  > > This one, more or less.  Its hung off the ISA bridge.
>  >
>  > On the one hand, this is annoying, because it means that the board
>  > has no sound chip built into it as part of the multi-I/O chip,
>  > which shoots me in the foot.  8-(.  On the other hand, it's an
>  > Intel bridge chip, which might give creedence to the idea that
>  > it's limited to 2 DMA channel negotiations, and barfs if you
>  > try to stick another PCI card in it that does DMA, which keeps
>  > my other foot safe.  8-).
>
> Huh?  Its an alpha.. PCI dma is handled separately, by the core-logic
> chipset (21174 pyxis).  There are no DMA channels for PCI devices.
>
> However, there are some cards which the SRM fails to setup properly.
> For example, some ATA cards get IO ports which are higher than
> they expect and barf.  Perhaps this is what's happening to the
> happless user who started this thread.

	I think this may be the case with the PCI sound cards. Every
single one of them I tried wasn't identified by the manufacturer in SRM,
like every other card in the machine was. The PCI sound cards are just
identified by two sets of numbers, which I guess correspond to vendor ID
and part number.

> Drew >

Thanks,
Josh


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