Yes, but maybe the forced march at Athena was a year or so later, ’88 or ’89?? There was a preceding IBM internal “forced march” involving Bruce Walker from LCC, people from Palo Alto responsible for AOS (two co-authors of https://technologists.com/sauer/Convergence_of_AIX_and_4.3BSD.pdf plus a couple of others) and AIX people. The work in that 1989 Uniforum paper was done in 1988, targeting AIX 3, as discussed a little more in https://notes.technologists.com/notes/2017/03/08/lets-start-at-the-very-beginning-801-romp-rtpc-aix-versions/

When I left IBM at the beginning of May 1989, I was running AOS on my home RT and AIX 2.2 on my office machine.

On Nov 5, 2019, at 6:06 PM, Theodore Y. Ts'o <tytso@mit.edu> wrote:

On Tue, Nov 05, 2019 at 04:11:11PM -0600, Charles H Sauer wrote:
It has been illuminating, surprising, but not shocking, the last week of so,
to learn from from posts here, that AIX/370 was hard to get and mostly a
university offering. What we (AIX people associated with RT/PC and then
RS/6000) were told was that "everybody", especially Federal customers,
wanted what became known as TCF (the original Locus work) for 370 and PS/2.
I remember one Federal Systems Division person who seemed especially
effective as a Locus advocate. I'd always assumed AIX/370 and AIX PS/2
became more available than reported here, but I left IBM before they were
released.

Enumerating factions/companies, just regarding AIX & Unix, there were the
Federal Systems faction/company, the academic factions/company (primarily
two factions, BSD & TCF, in Palo Alto), the PS/2 faction/company, the
Rochester System/38->AS/400 faction/company, the Austin development lab,
several Research locations (primarily Yorktown), ...


There was also AOS (Academic Operating System) which was basically
repackaged BSD 4.x ported to the IBM/RT PC[1].  At MIT's Project
Athena, most people massively preferred it to AIX, but we were force
marched to AIX by 1987 or 1988.  :-/

[1] https://en.wikipedia.org/wiki/IBM_RT_PC#Software

- Ted

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