DEMOS (Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema: Russian: Диалоговая Единая Мобильная Операционная Система, ДЕМОС, lit. 'Interactive Unified Portable Operating System') is a Unix-like operating system developed in the Soviet Union. It is derived from Berkeley Software Distribution (BSD) Unix.

It's development was initiated in the Kurchatov Institute of Atomic Energy in Moscow in 1982, and development continued in cooperation from other institutes, and commercialized by DEMOS Co-operative which employed most key contributors to DEMOS and to its earlier alternative, MNOS (a clone of Version 6 Unix). MNOS and DEMOS version 1.x were gradually merged from 1986 until 1990, leaving the joint OS, DEMOS version 2.x, with support for different Cyrillic script character encoding (charsets) (KOI-8 and U-code, used in DEMOS 1 and MNOS, respectively).

Initially it was developed for SM-4 (a PDP-11/40 clone) and SM-1600. Later it was ported to Elektronika-1082, BESM, ES EVM, clones of VAX-11 (SM-1700), and several other platforms, including PC/XT, Elektronika-85 (a clone of DEC Professional), and several Motorola 68020-based microcomputers.

The development of DEMOS effectively ceased in 1991, when the second project of the DEMOS team, RELCOM, took priority.

An archive of the DEMOS source code can found here: https://github.com/bpr97050/DEMOS There's some interesting comments and mailing list archives in that repository as well. :)


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  • LocalOaf [they/them, ze/hir]
    ·
    18 days ago
    alcoholism/sobriety

    Got really bitter and lapsed on my "don't drink spirits" self rule

    Vacuumed my parent's place while I had a chance to

    It was a grotesque shit hole

    Had a bunch of vodka from my dog shit dad

    This is my third lapse in four months, so I guess I can live with it despite feeling like shit

    yes-honey-left

    • TerminalEncounter [she/her]
      ·
      18 days ago
      spoiler

      Sobriety isn't linear, I mean if you're even aiming for sobriety. But dealing with something like addiction at least where you wanna cut down, that has its ups and downs. Hope you can get back on the proverbial wagon, whatever that means like not drinking spirits, and stay on! Your counter starts today, again you can get to your personal best