[H-GEN] Tag RAM and lots of memory

David Jericho davidj at meesha.humbug.org.au
Thu Sep 25 07:39:08 EDT 1997


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On Thu, 25 Sep 1997, Frank Brand wrote:

> The new Via (AMD 640) chipsets cover everything and, from all reports
> are the fastest chipset available for normal Pentium class machines.
> However, since I am sure you will be using Pentium Pro/II gear the LX
> chipset will be your choice. <WINK>

Very nice chipsets are they not? Now imagine a AMD K6 with a 100MHz bus
running on it.. garh :)~~

But on a more serious note, I remember Andrae some while back talking
about cache flushes when the cpu does a context switch (I think I have
that right). While I have an idea of what that means, is it safe to assume
that the TAG RAMs purpose is to keep track of what is dirty and what is
not, so that the writeback into RAM is minimal?

Come to think of it, I don't know how SMP handles those style of
conditions, and obviously data races could occur...

- --
- -- David Jericho - off to read the intel handbook I go...
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