From: John Kim (kim_at_stormhaven.org)
Date: Tue Mar 02 1999 - 13:01:10 EST
On Tue, 2 Mar 1999, Vincent Poy wrote:
>
> Actually, everyone is incorrect about this... The 64 meg issue
> has nothing to do with the OS but the chipset implementation on the
> system.
Those chipsets limited to caching 64 MB cache it from the
bottom up. If the OS uses memory from the top down, it will
be using uncached memory before it uses cached memory. That
is why some OSes can be mostly unaffected by the problem,
while others are severely impacted. One oft-cited remedy is
to turn the uncacahed memory into a ramdisk, but I've never
seen details on how that is done.
> If it's the Triton FX/MX/TX/VX, the system can only cache 64 megs
> of RAM. If you go over, none of the ram will be cache. If you use the HX
> chipset, then it can cache 512 megs of RAM.
Which just begs the question: which Pentium laptops use the
HX chipset, if any?
-- John H. Kim kim_at_stormhaven.org
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