Article View: comp.sys.atari.st
Article #5694Re: Gadgets by Small - Possible new '030 add-on board!
From: Greg Lindahl
Date: Wed, 15 Nov 1989 02:51
Date: Wed, 15 Nov 1989 02:51
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In article <23970@cup.portal.com> Xorg@cup.portal.com (Peter Ted Szymonik [ quoting dave small ]) writes: [ Dave Small's blurb about this maybe-030 upgrade for the ST... ] > We will also "clock" the 68030 processor at a much higher speed > than the ST's 68000. The ST runs at 8 mhz (millions instructions / > second); we'll go for at least 16 Mhz and possibly more. This is wrong. The ST has a clock rate of 8 mhz. But it takes 4 cycles for the processor to fetch a word from memory, and so memory is really available only 2 million times a second. Then access is interleaved between video/refresh and the CPU, so the CPU gets 1 million per second. Gosh, I don't really remember anymore. Anyway, it isn't 8 million instructions per second. ------ Greg Lindahl gl8f@virginia.edu Astrophysicists for Choice.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!uvaarpa!hudson!astsun9.astro.Virginia.EDU!gl8f From: gl8f@astsun9.astro.Virginia.EDU (Greg Lindahl) Newsgroups: comp.sys.atari.st Subject: Re: Gadgets by Small - Possible new '030 add-on board! Message-ID: <2278@hudson.acc.virginia.edu> Date: 15 Nov 89 02:51:04 GMT References: <23970@cup.portal.com> Sender: news@hudson.acc.virginia.edu Reply-To: gl8f@astsun.astro.Virginia.EDU (Greg Lindahl) Organization: Department of Astronomy, University of Virginia Lines: 20