2001-04-30 12:34:50

by Greg Hosler

[permalink] [raw]
Subject: Via VT82C686 data sheet

Does anyone have, or know where I can get a copy of the above ?

The onboard AC97 sound driver (via82cxxx_audio) was rewritten from legacy
(which works both in UP and SMP kernels), to do w/o the legacy support,
and go native. The problem is that the new driver doesn't properly handle
enabling interrupts for the case when the IRQ has been reassigned (by
the I/O APIC, which is typical under SMP). (actually the via82cxxx_audio
has code to try to handle the reassignment of the IRQ, but it doesn't work).

I'm looking to see a copy of the datasheet on the 82C686, to see if I can
debug this further.

thx for any pointers, and rgds,

-Greg

+---------------------------------------------------------------------+
"DOS Computers manufactured by companies such as IBM, Compaq, Tandy, and
millions of others are by far the most popular, with about 70 million
machines in use wordwide. Macintosh fans, on the other hand, may note that
cockroaches are far more numerous than humans, and that numbers alone do
not denote a higher life form." (New York Times, November 26, 1991)
| Greg Hosler i-net: [email protected] |
+---------------------------------------------------------------------+


2001-04-30 18:34:18

by John Silva

[permalink] [raw]
Subject: Re: Via VT82C686 data sheet

Via Product Datasheet Page
http://www.via.com.tw/support/datasheets.htm

Via Apollo Pro 82C686A
http://www.via.com.tw/pdf/productinfo/686a.pdf

VIA Document Request Form
http://www.via.com.tw/contact/datasheets.htm

-J.


Greg Hosler wrote:
>
> Does anyone have, or know where I can get a copy of the above ?
>
> The onboard AC97 sound driver (via82cxxx_audio) was rewritten from legacy
> (which works both in UP and SMP kernels), to do w/o the legacy support,
> and go native. The problem is that the new driver doesn't properly handle
> enabling interrupts for the case when the IRQ has been reassigned (by
> the I/O APIC, which is typical under SMP). (actually the via82cxxx_audio
> has code to try to handle the reassignment of the IRQ, but it doesn't work).
>
> I'm looking to see a copy of the datasheet on the 82C686, to see if I can
> debug this further.
>
> thx for any pointers, and rgds,
>
> -Greg
>
> +---------------------------------------------------------------------+
> "DOS Computers manufactured by companies such as IBM, Compaq, Tandy, and
> millions of others are by far the most popular, with about 70 million
> machines in use wordwide. Macintosh fans, on the other hand, may note that
> cockroaches are far more numerous than humans, and that numbers alone do
> not denote a higher life form." (New York Times, November 26, 1991)
> | Greg Hosler i-net: [email protected] |
> +---------------------------------------------------------------------+
> -
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--
John P. Silva [email protected]