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Date: Sun, 19 Mar 1995 17:28:31 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199503190728.RAA10360@godzilla.zeta.org.au>
To: nate@sneezy.sri.com, phk@ref.tfs.com
Subject: Re: NMI Error success story
Cc: core@FreeBSD.org, hackers@FreeBSD.org
Sender: hackers-owner@FreeBSD.org
Precedence: bulk

>> But, I did notice that the static cache rams on the new motherboard were
>> 15ns, and on my old (buggy) motherboard they were 25ns.  Because I had
>> nothing to lose and feeling like I couldn't make the problem any worse I
>> swapped the cache chips on the motherboards.

>I will add that I did the same surgery on my machine, which worked fine
>before and after, with the lefthand spin to it that it ran around 10% faster
>afterwards because I could get the cache burst down to 3-1-1-1 instead of
>3-2-2-2.

Rod tells me it shouldn't work, but I've had good results from setting
the cache burst to 2-1-1-1 on systems with mediocrely rated cache RAMS
(only 20ns for the tag RAM if I remember right).

Bruce