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- Path: sparky!uunet!mcsun!uknet!pavo.csi.cam.ac.uk!cl.cam.ac.uk!nas20
- 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>
- Sender: news@infodev.cam.ac.uk (USENET news)
- Reply-To: nas20@cl.cam.ac.uk (Nick Smith)
- Distribution: comp
- Organization: U of Cambridge Comp Lab, UK
- Lines: 20
- Nntp-Posting-Host: barham.cl.cam.ac.uk
-
- 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. ---
-