On Sun, 17 Oct 1999, Mike Cheponis wrote:

> 
> On Sun, 17 Oct 1999, Tom Javen wrote:
> > On Sun, 17 Oct 1999, Mike Cheponis wrote:
> 
> >> I installed 1.4.1 on an IBM 18G disk into a 2G partition.  Then I gave the
> >> disk to a friend to install into his machine.  (Both machines are K6-2/450
> >> MHz w/64 MB, but are otherwise not identical motherboards).
> 
> 
> >> wd0a: DMA error reading fsbn 85104 of 85104-85119 (wd0 bn 85167; cn 84 tn 7 sn 54), retrying
> >> wd0: soft error (corrected)
> 
> >> [... many more of those ...]
> 
> 
> > I got the same problem here with 20G IBM , seems that my motherboard (asus
> > p5a) with acer chipset has some problems on ultra dma .
> > 
> > works fine with a kernel compiled with :
> > wd*     at pciide? channel ? drive ? flags 0x0fac
> 
> > Tom
> 
> The motherboard has the Ali M1541/M1543C chipset.
> 
> I guess one question is: Is this a h/w problem that prevents, in the case
> you mention, the Ali (acer) chipset from properly doing ultra dma?
> 
> Or is this a problem with NetBSD's inability to massage the Ali chipset
> properly to do ultra dma?

Don't know, my machine has been able to rebuild itself a few times
so any data lossage is well hidden.
Ofcourse could be bad drive/motherboard/cable combination....

Tom
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