Re: Hi res modes

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Article #190

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#190

From: Nick Smith
Date: Tue, 15 Sep 1992 10:50

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In article <6578@armltd.uucp> astevens@armltd.co.uk (Ashley Stevens) writes:
>In article <1992Sep11.193305.20265@rhrk.uni-kl.de> m_sattle@tangram.informatik.uni-kl.de (Matthias Sattler) writes:
>>
>>I just replaced the 36 MHz quarz on the board of my A5000 by a 60 MHz one. This
>>had several results on my A5000.
>>5.) The computer gets remarkably faster... >22000 Dhrystones in mode 21, 28 
>>    (with CPU 30 MHz) and I don't know why as well.
>
>The 36MHz clock also clocks the memory system. It's divided by 3 inside MEMC
>(effectively). So using a 60MHz clock means you are now running your memory
>system at 20MHz. Obviously this has a beneficial effect on your machine
>speed...if it continues to work.
>
>Ashley Stevens, Design Engineer, Acorn Computer       astevens@acorn.co.uk  

That really is incredible ! Can Matthias please post details of his machine
(RAM, which 2MB upgrade board, etc) ? And how reliably it works, etc.
--
Nick Smith, Churchill College, Cambridge, UK.  %$%  Email: nas20@uk.ac.cam.phx
sig quote wanted - must be under guarantee.   $%$  --- Usual disclaimer. ---

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References: <1992Sep11.193305.20265@rhrk.uni-kl.de> <6578@armltd.uucp>

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From: nas20@cl.cam.ac.uk (Nick Smith)
Newsgroups: comp.sys.acorn.tech
Subject: Re: Hi res modes
Message-ID: <1992Sep15.105031.17458@infodev.cam.ac.uk>
Date: 15 Sep 92 10:50:31 GMT
References: <1992Sep11.193305.20265@rhrk.uni-kl.de> <6578@armltd.uucp>
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