Re: IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH]for idle=C1halt, 2.6.5

From: Prakash K. Cheemplavam
Date: Thu Apr 29 2004 - 15:47:19 EST


Jesse Allen wrote:
What I'd like to know is where the sound chip is really at on my board. I've tried looking before, but find myself confused.

A pic:
http://us.shuttle.com/images/productimages/AN35.jpg

According to a diagram that I have, it points to an AC'97 6-CH AUDIO as a chip
near of the top of the board in the image that I link to, above 2nd PCI slot left of the AGP. But I'm am also left thinking, how does the NForce2 MCP come into play. Specs would help. Maybe if we can figure out how the sound is wired on the board, we could also trace the source of noise to the exact component.

Yes, I also think the chip above 2nd PCI slot is the right one. You can see the realtek logo. It is only a ac97 codec (basically not more than a DAC and ADC) and linux currently only has drivers for this. The MCP-T has an APU, which could do dsp stuff by hardware, but no drivers still (Hello Nvidia?), so all of this is done via software. (THe APU has even more functionality, like DD5.1 realtime encoding, fx, and whatever). In our case, the APU shouldn't cause any troubles, as it is not used. With the APU, nforce2 chipset behaves like a "real" soundcard. Without, its sound abilities are not better than the average mainboard's onboard sound.

Prakash
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