From owner-freebsd-questions  Sun Oct 29  3:38:33 2000
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Date: Sun, 29 Oct 2000 11:38:13 +0000
To: e96sv@efd.lth.se
From: Phil Allsopp <phil@virtek.com>
Subject: Re: Page fault
Cc: freebsd-questions@FreeBSD.ORG
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At 11:28 29/10/2000 +0100, you wrote:
>Hi. I'm trying to put more memory into my 486 DX2 computer.
>It's got 16MB at the moment (2 8MB 72 pin simms), but when I add one more
8MB simm, the BIOS sees it, but the kernel panics at boot with a "page
fault" error.
>I really don't know where I should begin searching for the error here. Any
ideas?


You have to put simms in in pairs.

This is due to the fact that the CPU can access the RAM faster than the ram
can respond and so the ram is accesses in an odd/even manner. One simm
first then the other and so on.

Phil.


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