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From: Nicholas Knight <tegeran@home.com>
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To: Sean Swallow <sean@swallow.org>, <linux-kernel@vger.kernel.org>
Subject: Re: AMD viper chipset and UDMA100
Date: Thu, 27 Sep 2001 14:36:25 -0700
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On Thursday 27 September 2001 02:26 pm, Sean Swallow wrote:
> List,
>
> I just got a tyan tiger w/ the AMD Viper chipset on it. For some
> reason Linux will only set the onboard (AMD viper) chains to UDMA33.
>
> I'm using linux 2.4.9, and I have also tried 2.4.10. Is there a
> limitation to the AMD Viper driver?
>
> PS. The cables (2) are BRAND new ata100 cables.
>
> cheers,

Welcome to hell.
I belive the solution is to enable the option "IGNORE word93 Validation 
BITS" at the bottom of the "IDE, ATA and ATAPI Block Devices" menu 
accessable in "ATA/IDE/MFM/RLL support"