Path: 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


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.