Subject: Re: Pentium + 256k pipelined cache
To: John F. Woods <jfw@funhouse.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-i386
Date: 04/26/1996 18:15:51
On Fri, 26 Apr 1996 07:46:47 -0400
"John F. Woods" <jfw@FunHouse.com> wrote:
> If turning the external cache off makes it work, then it can't be a gcc bug.
> I don't know of any "known bugs" with Pentium systems and external caches,
> but it's certainly common enough for 486 system chipsets to mishandle their
> external caches, typically failing to do bus snooping or not handling the
> invalidate commands correctly. You'd think that chipset manufacturers would
> learn from previous mistakes and not continually reimplement them; you'd
> apparently be sadly mistaken...
I've actually filed at least on PR re. the cache losing on a Pentium
system. Symptoms were basically nasty memory corruption. It sucked.
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