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Article #32575Re: 16MHz board -- fast CPU, slow memory?
From: Stephen Jacobs
Date: Wed, 18 May 1988 11:41
Date: Wed, 18 May 1988 11:41
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Paul Close correctly observed that if you speed up the cpu to 16 MHz but keep the 120 ns memory you'll introduce wait states. But a very rough estimate is that 68000 code has a memory reference about every 3 cycles (that's both oper- and and instruction references). The big problem is with video refresh, which is all memory references. But the compute part of operation should suffer relatively little from wait states.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!chinet!saj From: saj@chinet.UUCP (Stephen Jacobs) Newsgroups: comp.sys.atari.st Subject: Re: 16MHz board -- fast CPU, slow memory? Summary: You can live with wait states (IBM users do) Message-ID: <5607@chinet.UUCP> Date: 18 May 88 11:41:16 GMT References: <725@cacilj.UUCP> Organization: Chinet - Chicago Public Access UNIX Lines: 7