I'd say TripOS. There is some surce fragments but I never could get any BCPL to
cross build anything.
Also Mach 1.x to 2.5
Sent from my Windows 10 Nokia Lumia 1520
From: Noel Chiappa
Sent: Sunday, 7 October 2018 9:05 AM
Subject: Re: [TUHS] Unix source code archive in the news
From: "Nelson H. F. Beebe"
a goal of a triplicated complete archive of the
history, including both open source and proprietary code. They report
holding 200TB of data already, covering 80 million code projects.
I should ask them if they have a copy of MERT!
Now that we have Multics, ITS, PDP-7 UNIX and UNIX V0, etc MERT (which may
have been the first micro-kernel - although perhaps THE gets that palm) is
perhaps the most significant 'missing' OS.
If not, what am I missing? The Berkeley Genie OS for the SDS? (Dunno if that's
been saved.) The THE system? (Ditto - although I know someone has saved the
last X8.) The Atlas OS?