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From: lawrie@uicsrd.csrd.uiuc.edu
Newsgroups: comp.arch
Subject: Re: QM-1 or like machines???
Message-ID: <43700019@uicsrd>
Date: Mon, 31-Aug-87 18:09:00 EDT
Article-I.D.: uicsrd.43700019
Posted: Mon Aug 31 18:09:00 1987
Date-Received: Sat, 5-Sep-87 06:26:04 EDT
References: <63900006@convex>
Lines: 21
Nf-ID: #R:convex:63900006:uicsrd:43700019:000:830
Nf-From: uicsrd.csrd.uiuc.edu!lawrie    Aug 31 17:09:00 1987


/* Written  8:43 am  Aug 27, 1987 by mark@aoa.UUCP in uicsrd:comp.arch */

In article <1118@pdn.UUCP> alan@pdn.UUCP (0000-Alan Lovejoy) writes:
>   
>The M680x0 family has a nanocode/microcode architecture, and has been
>used to emulate other architectures.  IBM's XT/370 and AT/370 used
>remicrocoded M680x0's to emulate S370.
>

I've heard persistent rumors that it is possible to remicrocode some of/
one of the M680x0 series without ripping the chip apart, i.e. that some 
have a writeable microcode control store.  I have never believed this
( and still don't ), but this article has prompted me to raise this
rumor, and see if it gets any response.  Comments on this ( outlandish )
concept, anyone?

	Mark Reynolds
	...!{wjh12,mit-vax}!biomed!aoa!mark
	...!{harvard,ima}!bbn!aoa!mark
/* End of text from uicsrd:comp.arch */