[TUHS] Re: Early supported UNIX manual

On Thu, Dec 22, 2022 at 04:44:32PM -0500, Phil Budne wrote: used by MERT: https://www.tuhs.org/Archive/Documentation/Manuals/MERT_Release_0/Unix%20Pr… "The semaphores provided in the MERT/UNIX supervisor are identical to those provided by the USG-UNIX Generic 3 system [8]. [8] Brandt, R. B., Implementation of Semaphores and Messages in UNIX, MF-76-8234-076." https://www.tuhs.org/Archive/Documentation/TechReports/Heinz_Tech_Memos/TM-… "Make (a program for maintaining other programs) was launched at the CSRC towards the end of the year and was immediately adopted by USG for the next generic release (PG-1C300 issue 2). This was a snapshot of the USG system at mod level 3.33 (January 1976) indicating at least three distinct levels of evolution: the generic releases, major and minor USG mod levels." "Generic 3.0 was released in spring 1977 (delayed from January)." Pirzada, A Statistical Examination of The Evolution of the UNIX System "I do remember a conversation with Dennis about semaphores, though. He mentioned that no less than five groups inside of Bell Labs had hacked semaphores into the kernel. Each group did it differently." Steve Johnson https://minnie.tuhs.org/pipermail/tuhs/2017-February/009748.html In CB-UNIX there was sema(2): https://www.tuhs.org/Archive/Distributions/USDL/CB_Unix/cbunix_man2_04.pdf In System V Release 1, semctl(2), semget(2), semop(2) http://www.bitsavers.org/pdf/att/unix/System_V_Release_1/301-905_UNIX_Syste… xenix creatsem(2), opensem(2), sigsem(2), waitsem(2) http://www.bitsavers.org/pdf/intel/system3xx/xenix-286/174385-001_Overview_…