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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  • Poogona [he/him]@hexbear.net
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    19 days ago

    I’m hope I’m not breaking any rules fouling up the trans mega thread with cissitude but I have a bunch of trans and otherwise queer people in my life who all are in really bad headspace right now, and they’ve all been venting to me because I am apparently the Politics Understander for them

    Is there any boilerplate advice I should be giving them? Any insights from people a bit older than their 20s for the trans youngins who are terrified? It’s becoming a real emotional burden for me to hear how scared some of these friends are and I’d like to have something to say to them from the experts

    • WalrusDragonOnABike [they/them]
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      18 days ago

      Just because some of us aren’t in our 20’s anymore doesn’t mean we know much more… so many of us also discovered we were trans during or after covid. But its not like trans people didn’t exist in the US from 2016-2020 and we’ll continue to be around.

      Taking some action to feel more secure might help some? From things like firearm training, to community organizing, to getting a visa (or visas, if you can get a foreign one), etc

      • Poogona [he/him]@hexbear.net
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        17 days ago

        Oh I didn’t mean to imply that it would be advice from veteran trans people over 30, just that since they are suffering from the worries and uncertainty that is youth on top of being trans, someone a little older might just have something to say with more personal maturity behind it

        It kills me when all I can say back to them is “yeah that would be hard, damn”