Subject: Re: 9600s and 2 processors
To: Tim Kelly <hockey@dialectronics.com>
From: Michael <macallan18@earthlink.net>
List: port-macppc
Date: 03/11/2005 08:55:59
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Hello,

> > You can use an adaptor card to use ZIF modules, there are several with
> > multiple G3 and G4 CPUs, and I'm pretty sure there was at least some
> > Daystar board with two G3s - they're not exactly common though.
> 
> Personally I've never seen a DP G3 card. As I understand it, the G3 had
> a design flaw that caused cache coherency issues. It wouldn't mark
> contents of the cache dirty, which made sync'ing extremely difficult. As
> I understand it, this could be overcome, but not cost-effectively. I
> don't think I'd want to invest in seeing if someone got it right.
Ah, another explanation. So what I remember is probably just a load of marketing blurb about products to come :/
Anyway, even slow dual G4 cards/modules are too expensive, and it would have to be one with big caches...

have fun
Michael

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