Path: utzoo!mnetor!uunet!portal!atari!apratt
From: apratt@atari.UUCP (Allan Pratt)
Newsgroups: comp.sys.atari.st
Subject: Re: 16MHz 68000
Message-ID: <1053@atari.UUCP>
Date: 4 May 88 23:57:24 GMT
References: <3002@pasteur.Berkeley.Edu>
Organization: Atari Corp., Sunnyvale CA
Lines: 19

From article <3002@pasteur.Berkeley.Edu>, 
by landay@cory.Berkeley.EDU (James A. Landay):

> It has already been discussed what a problem it would be to get a 
> 68020 working in the ST.  Now that Motorola has announced a 16MHz version
> of the 68000 (for less than $40 in quantity of ~400) I was wondering
> what it would take to get one of these working in place of the 68000.
> (Alan?)

It's not easy.  The ST runs with a synchronous 8MHz bus, even though the
68000 doesn't have to.  This is because we interleave video RAM fetches
with the processor instruction/data fetches.  Since 16MHz is (obviously)
exactly twice 8MHz, it might be pretty straightforward, but then it
might not, and in any case it is debatable if this will yield
substantial speed improvements. 

============================================
Opinions expressed above do not necessarily	-- Allan Pratt, Atari Corp.
reflect those of Atari Corp. or anyone else.	  ...ames!atari!apratt