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From: schoff@rpics.UUCP
Newsgroups: comp.sys.mac
Subject: Re: MacWorld Expo
Message-ID: <639@rpics.RPI.EDU>
Date: Fri, 16-Jan-87 08:38:58 EST
Article-I.D.: rpics.639
Posted: Fri Jan 16 08:38:58 1987
Date-Received: Sun, 18-Jan-87 00:22:47 EST
References: <2171@jade.BERKELEY.EDU> <2221@jade.BERKELEY.EDU>
Lines: 23
Summary: 370 instruction set emulated by 68000

In article <2221@jade.BERKELEY.EDU>, srm@iris.berkeley.edu (Richard Mateosian) writes:
> >	Overheard at the Levco booth:  The 68020 can supposedly be
> >	  microcoded so as to run identically to a 80386.  Someone
> >	  even suggested that at 25 Mhz 68020 would do such at 3 MIPS.
> 
> That's ridiculous.
> Richard Mateosian    ...ucbvax!ucbiris!srm 	     2919 Forest Avenue     
> 415/540-7745            srm@iris.Berkeley.EDU        Berkeley, CA  94705    


I think that the MMU instructions would be tough for the 68020 to be
handled alone but don't forget that IBM has been shipping a XT370 and
a AT370 which use a 68000+8087+"other hardware" with new microcode
to support a 370 "architecture" and run a variant of VM/CMS.

This is not something I would like to do though.  Of course IBM can
throw oodles of money and hundreds of people and get a "solution",
I'll bet Motorola is REAL interested in running their chip as a 80386 :-)

-- 
marty schoffstall
schoff@csv.rpi.edu
seismo!rpics!schoff