On 2016-04-21 7:29 PM, Dave Wade wrote:

-----Original Message-----
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy
Sotomayor
Sent: 21 April 2016 22:39
To: General Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>
Subject: Re: High performance coprocessor boards of the 80s and 90s - was Re:
SGI ONYX


On Apr 21, 2016, at 2:35 PM, Josh Dersch <dersc...@gmail.com> wrote:

On Thu, Apr 21, 2016 at 2:34 PM, Ali <cct...@ibm51xx.net> wrote:

Actually, the first one was called XT/370 because it plugged into an
XT!
Then came AT/370.  Those were obviously ISA boards.  Then came some
variants that were microchannel.  The final iterations were PCI based.

Guy,

I am not sure about the other systems but my understanding of the
XT/370 and AT/370 was that they were glorified terminals i.e. instead
of having a terminal and a PC on your desk you could have it all in one. Is
this wrong?
I think you're thinking of the 3270 PC  and 3270 AT, which was pretty
much what you described hereā€¦
The XT/370 and AT/370 had coprocessor boards that allowed 370 code (and a
heavily modified version of VM/370) to be run on the machine itself.  They
were
I don't think the CMS was "heavily" modified, modified certainly, but heavily 
modified I don't think so...


*not* just glorified terminals.  ;-)

TTFN - Guy

The CMS probably was not modified much but the VM underneath it was. CMS is just the single user client OS that is commonly what people see when they log onto "VM". But VM is really a virtualisation manager that can run a number of guest operating systems, but in the case of the XT and AT 370 it seems to me it only supported a single CMS session.

Paul.

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