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Re:Memories: Artificial Intelligence at Stanford in the 70s by gumby on Wednesday January 11, 2023 @01:04PM (#34341957)
MIT's PDP-10 OS, ITS, was unrelated to TOPS-10 and in fact predated it (it was the first OS on the PDP-6). AFAIK, SAIL's PDP-10 OS, WAITS, was also written from scratch, as it started on the '6 as well. I DOUBT DEC every provided a PDP-6 OS anyway as it was a research machine manufactured in small volume mainly designed for LISP.

ITS's name, Incompatible Timeshare System, came from a prior MIT OS, CTSS ("Compatible Time Sharing System"). I never learned what it might have been compatible with as it was long gone by the time I showed up at MIT.

WAITS supposedly got its name as a joke on ITS, but you'd have to ask Les Earnest for the real story.

Re:Memories: Artificial Intelligence at Stanford in the 70s by p_l on Saturday January 14, 2023 @08:47AM (#34380288)
IIRC DEC provided a very, very limited OS for PDP-6 called "MONITOR", which later survived long enough to be used as origin point for TOPS-10. The version as arrived with PDP-6 was very, very limited, which didn't help PDP-6's abysmal sales (especially coupled with infamaous unreliability).