10 Feb
2023
10 Feb
'23
10:38 a.m.
Thank you for the corrections and additions. I've been back and forth on the naming,
I hear it called USG UNIX 4 in some contexts, the literature just says "UNIX"
until SysV which gets "UNIX System". UNIX/TS is at the top of low.s in SysIII
and SysV, but this could just be left over.
In one school of thought, calling it PWB 4 might be more accurate than any of these. I
recall reading elsewhere here in the mailing list that the name System III was chosen
because it was believed Programmers WorkBench wouldn't be an appealing name
marketing-wise.
If strictly documentation is to be followed, then this manual and my analysis represent
"UNIX Release 4.1" for the 3B20S as dated June 1981. Anything not directly
pertaining to this, of course, is speculation and postulation.
- Matt G.
------- Original Message -------
On Thursday, February 9th, 2023 at 6:54 PM, Jonathan Gray <jsg(a)jsg.id.au> wrote:
On Thu, Feb 09, 2023 at 01:32:21AM +0000, segaloco via
TUHS wrote:
Good day everyone, I'm emailing to start a
thread on part of my larger
UNIX/TS 4.x project that is coming to a conclusion. Lots of info
here, so pardon the lack of brevity.
according to Pirzada's thesis there was no UNIX/TS 4.x
nov 1978 UNIX/TS 1.0
feb 1979 UNIX/TS 1.1
sep 1979 UNIX/TS 1.2 (VAX)
early 1980 PWB and USG groups combine into
"Microsystems and UNIX Development Laboratory"
jun 1980 UNIX Release 3.0
sep 1980 UNIX Release 3.1
mar 1981 UNIX Release 4.0
aug 1981 UNIX Release 4.1.1 for 3B-20
dec 1981 UNIX Release 4.1.2
jan 1982 System III, based on Release 3.0.1
feb 1982 UNIX Release 4.2
may 1982 UNIX Release 4.2.1
oct 1982 UNIX Release 5.0
jan 1983 System V, based on Release 5.0
"In August 1981, UNIX (denoted: 4.1.1[14]) was released for the
WECo 3B-20s processor. It was meant only for the 3B machine and was
basically 4.0 with hardware related changes. This release also marked
the point where WECo became the official UNIX release agent (aking over
from Bell Labs). An update (4.1.2) was released in December containing
some memory management fixes and added on-line diagnostics.
14. Release 4.1 never making it out of the door as it was not meant for
floating point hardware."
somewhere along the way the responsibility was
shifted from Lab 364 (3.x)
to Lab 4542 (5.x).
"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."
SysV IPC appears to be largely there by 4.1, with
only icprm missing
as far as I could tell.
further changed in 4.2:
"Release 4.2 was launched in February 1982 for both the 3B & the DEC
machines. It contained improvements to the data communications and
networking software and more mature IPC."
From 4.1 to 5.0 the largest changes I see thus
far are the addition of
CB-UNIX init, generalization of COFF from a 3B-20 object format, and
otherwise just clerical, marketing, and accuracy improvements to the
literature.
"Much improved performance, a new file system, new init and getty (from
CB/UNIX) and networking with other bits from BSD/UNIX were the main
features of Release 5.0"
quotes from:
Shamim Sharifuddin Pirzada
A Statistical Examination of The Evolution of the UNIX System
September 1988
https://spiral.imperial.ac.uk/bitstream/10044/1/7942/1/Shamim_Sharfuddin_Pi…
referenced in
https://www.tuhs.org/Archive/Documentation/Emails/dmr_wkt.html