12 Mar
2018
12 Mar
'18
10:54 a.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Paul Berger via
cctalk
Sent: Monday, March 12, 2018 1:41 PM
To: Guy Sotomayor Jr via cctalk
Subject: Re: XT/370 microcode
The IBM Systems Journal article does not go into great detail but says
that a complex of three separate processors are used, a modified 68000
that executes "a large subset of 370 instructions", a standard 68000 to
emulate the remainder odf the instructions and a modified 8087 to
execute the floating point. I am not at liberty to post the document.
Paul.
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This one? Seems to be freely available.
https://www.researchgate.net/publication/224102395_System370_capability_in_…
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paul