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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  • 🎀 Seryph (She/Her)
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    3 days ago

    Today marks a full year since

    (cw: transphobia, abuse)

    my parents kicked me out for starting HRT.

    I wasn’t sure how I’d feel today, either good because I actually managed to stabilise and have done a lot in this past year, or shit from the whole affair having happened and the stress that I’m still feeling from it. Trying to keep myself busy and do my usual chores so I mostly feel numb. In the end though it seems to be some weird mix of all three of these feelings during my breaks between chores. Not good or bad really, just odd.

    Gonna probably try to treat myself a bit once my chores are done to see if that helps any. Got nicer food than usual and my roommate is out so I can take a nice long bath. Might also finally put in that order for a pair of custom sized lolita shoes.

    • MusicOwl [comrade/them, sie/hir]@hexbear.netM
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      Proud of you, comrade. I know that feeling well. cat-trans I hope that you get a chance to treat yourself after the chores! If it helps, I often welcome company of difficult anniversaries like this, it helps me grounded in what I have gained in light of such difficult events.

      On another note, those lolita shoes sound amazing. I just got myself a really cute pair of 3 inch heeled boots that match my goth sensibilities, and my 6’1" ass is feeling POWERFUL in them. lets-fucking-go