On Mon, May 07, 2001 at 10:16:55AM +0200, Frank van der Linden wrote:
> On Mon, May 07, 2001 at 01:54:36AM -0400, Thor Lancelot Simon wrote:
> > This leaves me wondering if the actual bug that's corrupting data
> > here is not in the IDE controller at all, but perhaps in VIA's
> > north bridge (memory controller, &c.).  Has anyone else had problems
> > with a motherboard with a 686B but an AMD or other (e.g. Samsung)
> > north bridge on it?
> 
> The problem is (as far as it has been diagnosed) in PCI DMA, not
> in the IDE part of the chip. It's just that the IDE controller
> is the most likely candidate to do busmastering DMA in the
> most usual system configurations.
> 
> Also, some motherboards seem to exhibit the problem, while others
> are very stable. I do not think that it's only the 686B, this is
> just the revision that has been widely publicized lately. I have

It's also the only one which supports ATA100. The faster IDE bus may help
make the problem show up.

--
Manuel Bouyer <bouyer@antioche.eu.org>
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