[TUHS] UNIX on (not quite bare) System/370

[Jonathan Gray]

On Tue, Dec 20, 2022 at 02:39:52AM -0700, arnold at skeeve.com wrote:
> segaloco <segaloco at protonmail.com> wrote:
> 
> > Looooots of if(n)defs in userland on "u370" in PDP-11 System V code, zilch on 3.0.1.
> >
> > Yep, must've been 4.0, because that's in the first document, A.1.1:
> > https://www.tuhs.org/Archive/Documentation/Manuals/Unix_4.0/Volume_1/A.1.1_Overview_and_Synopsis_of_Facilities.pdf
> > 
> > "Currently, UNIX runs on the Western Electric Co. 3B-20; Digital Equipment
> > Corporation's (DEC) PDP-11/23, /34, /45, /70, VAX-11/780, and VAX-11/750;
> > and IBM System/370 and equivalent."
> 
> So there we have it, Unix/370 inside the Bell System was at 4.0.  I don't think they ever released that
> outside the Bell System. Not surprising, as it needed a modified TSS underneath.
> 
> Arnold

"A Bell Laboratories -wide reorganisation in January 1981 resulted in
the UNIX Lab being renumbered.  Release 4.0 was launched from this
organization in March. It introduced new IPC mechanisms as well as new
drivers and changes to the text processing software and the C libraries
etc.  Also in March, the first UNIX release for an IBM machine was
launched as UNIX/370 Release 3.0"

Pirzada, A Statistical Examination of The Evolution of the UNIX System
https://spiral.imperial.ac.uk/bitstream/10044/1/7942/1/Shamim_Sharfuddin_Pirzada-1988-PhD-Thesis.pdf