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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"Monks, the All is aflame. What All is aflame? The eye is aflame. Forms are aflame. Consciousness at the eye is aflame. Contact at the eye is aflame. And whatever there is that arises in dependence on contact at the eye — experienced as pleasure, pain or neither-pleasure-nor-pain — that too is aflame. Aflame with what? Aflame with the fire of passion, the fire of aversion, the fire of delusion. Aflame, I tell you, with birth, aging & death, with sorrows, lamentations, pains, distresses, & despairs."The ear is aflame. Sounds are aflame...
"The nose is aflame. Aromas are aflame...
"The tongue is aflame. Flavors are aflame...
"The body is aflame. Tactile sensations are aflame...
"The intellect is aflame. Ideas are aflame. Consciousness at the intellect is aflame. Contact at the intellect is aflame. And whatever there is that arises in dependence on contact at the intellect — experienced as pleasure, pain or neither-pleasure-nor-pain — that too is aflame. Aflame with what? Aflame with the fire of passion, the fire of aversion, the fire of delusion. Aflame, I say, with birth, aging & death, with sorrows, lamentations, pains, distresses, & despairs.
"Seeing thus, the well-instructed disciple of the noble ones grows disenchanted with the eye, disenchanted with forms, disenchanted with consciousness at the eye, disenchanted with contact at the eye. And whatever there is that arises in dependence on contact at the eye, experienced as pleasure, pain or neither-pleasure-nor-pain: With that, too, he grows disenchanted.
"He grows disenchanted with the ear...
"He grows disenchanted with the nose...
"He grows disenchanted with the tongue...
"He grows disenchanted with the body...
"He grows disenchanted with the intellect, disenchanted with ideas, disenchanted with consciousness at the intellect, disenchanted with contact at the intellect. And whatever there is that arises in dependence on contact at the intellect, experienced as pleasure, pain or neither-pleasure-nor-pain: He grows disenchanted with that too. Disenchanted, he becomes dispassionate. Through dispassion, he is fully released. With full release, there is the knowledge, 'Fully released.' He discerns that 'Birth is ended, the holy life fulfilled, the task done. There is nothing further for this world.'"