Re: [patch] amd athlon cooling on kt266/266a chipset

[Daniel Nofftz]

On Thu, 24 Jan 2002, Martin Eriksson wrote:

> Well I guess it's very mobo-dependent then. What I remember from the VCool
> program is that it made windows go crazy on me. I dont know exactly what
> happened, just that I removed vcool very quickly.
>
> I just tried the function again, not using vcool, instead *only* enabling
> bit 8 of register 0x52 ("Disconnect Enable When STPGNT Detected") with the
> following results:
>
> * No other (major) load than Winamp: Minor sound skips
> * Winamp when reading from hard disk: Major sound skips
> * Winamp when using distributed.net client: Almost no sound skips (one or
> two on a 4 minute tune)
> * Winamp when using distributed.net & using hard disk: Almost no sound skips
>
> As both the HD controller and soundcard does much DMA, I guess it has some
> connection to DMA transfers on the PCI bus?
>
> OS: Windows 2000 Pro
> Northbridge: VIA KT133
> Southbridge: VIA 686B
> CPU: Athlon(B) 1GHz

i agree that this could be connected with dma transfers ... maybe the
disconnect procedure disturbs dma transfers on slower cpus, where the
disconnect/reconnect procedure takes to long ?
maybe it is realy a metter of the motherboard ? who realy knows ? maybe a
amd/via guru could answer this question ... at the moment i can't answer
it ... and my system isn't affected by this sound skips ... so i even
can'T make testes on it ...
maybe someon with this skips could make some tests ?
disabling/enabling dma , change some timings for pci bus in bios or such
things ?

daniel

# Daniel Nofftz
# Sysadmin CIP-Pool Informatik
# University of Trier(Germany), Room V 103
# Mail: [e-mail]