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From: thad@cup.portal.com (Thad P Floryan)
Newsgroups: comp.sys.att,unix-pc.general
Subject: Re: Monthly posting about Unix-PC network
Message-ID: <35695@cup.portal.com>
Date: 7 Nov 90 08:52:53 GMT
References: <1990Nov1.080516.14051@zorch.SF-Bay.ORG>
  <35534@cup.portal.com> <305@hico2.UUCP>
Organization: The Portal System (TM)
Lines: 36

kak@hico2.UUCP (Kris A. Kugel) in <305@hico2.UUCP> asks:

In article <35534@cup.portal.com>, thad@cup.portal.com (Thad P Floryan) writes:
 > kirkaas@makaha.cs.ucla.edu (paul kirkaas) in <1990Nov3.045636.12735@cs.ucla.
edu
 > >
 > 	UNISYS/NCG (formerly Convergent Technologies (also the mfr for AT&T
 > 	of the 3B1)) of San Jose CA showing their 68040 SVR3.2 with X11R4.
 > 	Software running on the 3B1 (68010), for example, can be simply
 > 	copied to that Model 4040 using tape or Ethernet and continue to
 > 	run (that Model 4040 is expected to officially debut on or about
 > 	Nov.21 per my notes from that meeting).
 > 
	this sounds bizzare, does it have a 68000 family co-processor?
	does it know about 3b1 pecularities?  binarys, or do you need
	to re-compile sources?

The 68040 in the 4040 is a 68000-family CPU (the family comprises the 68000,
68008, 68010, 68012, 68020, 68030 and 68040).  CT (now UNISYS) produces
systems based on 68010 and 68020, and, soon, the 68040 (seems the performance
of their 68020 systems never required a 68030 version).

Simply move the binary EMACS, ksh, etc.  from the 3B1 to that and they
continue to run.  Did this first for the CT MightyFrame and was I surprised;
the MightyFrame is a 68020-based system.  (FYI, can do the same even on an
Amiga which supports all of 68000, 68010, 68020, 68030 and 68040).  As long
as you move UP to a "higher" CPU.

The family of computers from CT (now UNISYS/NCG) are "compatible."  You might
want to keep that in mind if you're thinking about upgrading from a 3B1 and
don't want to re-buy (or recompile) all your programs.

Re-compiling would, of course, take advantge of compiler optimizations for the
newer chip(s).

Thad Floryan [ thad@cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad ]