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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  • Wmill [they/them]
    ·
    12 hours ago

    Explained to my parents years ago that I'm hexbear-pan and like my dad still doesn't know what that means and my mom is like "if you ever get with a a woman you like...... or guy" kitty-cri please I maybe be a loser with no pull but at least I'm a gay loser with no pull kitty-cri-screm

    • LocalOaf [they/them, ze/hir]
      ·
      9 hours ago

      I've tried explaining being pan to older mayonnaise-American relatives when they were getting nosy about me before as "bi, but weirder and more annoying to you" and they got kinda flustered and defensive in a funny way

      (not trying to disparage other pan ppl) hexbear-pan

      • Wmill [they/them]
        ·
        9 hours ago

        My mom just chalks it up to me being innocent and idealistic when I told her it was about love being important for me, since I don't act aggressively allo I guess it just throws her off. I do like your description tho solidarity flag-pan-pride

        • LocalOaf [they/them, ze/hir]
          ·
          8 hours ago

          "bi means two, and I recognize and am fond of more than two types of people" works pretty well too

          quickly makes transphobes/enbyphobes/intersexphobes show their asses too

          • Wmill [they/them]
            ·
            8 hours ago

            yea on the second part based on the first 07 being hexbear-pan just makes everything much more simple blob-no-thoughts