At 07:40 AM 12/14/99 +0800, Peter Wemm wrote:
>Greg Lehey wrote:
> > On Friday, 10 December 1999 at 23:32:27 -0800, Mike Smith wrote:
> > > [missing attribution to Greg Childers <[EMAIL PROTECTED]>]
> > >> Except that ATA currently does not work on my system. So I assume I'm not
> > >> the only one.
> > >
> > > Actually, to quote from your original message:
> > >
> > >> According to technical product summary, the primary IDE interface, on
> > >> which both my drives reside, is a PCTech RZ1000 on the PCI local bus.
> > >
>The RZ1000 is *dangerous*! We are doing no favours by making it run.. :-/
>IMHO It is better to loose the user by not playing ball than to corrupt
>their data or run unreliably and make them hate us for it.
>
>http://www.faqs.org/faqs/pc-hardware-faq/enhanced-IDE/part1/
<snip>
> o The PC-Tech RZ-1000, used on AT&T, Dell, Gateway and Intel boards,
> also has two data-corrupting bugs. See also
> <http://www.intel.com/procs/support/rz1000/index.htm>.
>
> In both cases, the corruption occurs only in specific software
> environments and is very subtle; you can go on working for months
> without suspecting anything more than buggy software. The damage can
> be immense. For all the details, look at Roedy Green's ([EMAIL PROTECTED])
> "PCI EIDE controller flaws" FAQ included with his EIDE test
> <ftp://garbo.uwasa.fi/pc/diskutil/eidete19.zip> program which will
> test your system for the bugs.
Thanks for the info! I wasn't aware of this problem. Fortunately, the fix was easy.
From eideflaw.txt in the above mentioned utility (actually it's eidete20.zip now):
Some BIOSes have a feature disable the EIDE prefetch buffer. <snip> This will
bypass both RZ-1000 flaws...
I haven't tried ATA after today's update. I'll do that tomorrow.
Greg
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