High performance coprocessor boards of the 80s and 90s - was Re: SGI ONYX

Guy Sotomayor ggs at shiresoft.com
Thu Apr 21 16:39:29 CDT 2016

> On Apr 21, 2016, at 2:35 PM, Josh Dersch <derschjo at gmail.com> wrote:
> On Thu, Apr 21, 2016 at 2:34 PM, Ali <cctalk at 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 here…

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
*not* just glorified terminals.  ;-)

TTFN - Guy

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