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The new mexico state university ring‐star system: A distributed unix environment
Author(s) -
Karshmer Arthur I.,
Depree Dirk J.,
Phelan James
Publication year - 1983
Publication title -
software: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 70
eISSN - 1097-024X
pISSN - 0038-0644
DOI - 10.1002/spe.4380131206
Subject(s) - unix , unix architecture , operating system , computer science , unix filesystem , microprocessor , state (computer science) , embedded system , interface (matter) , process (computing) , software , programming language , bubble , maximum bubble pressure method
Abstract A distributed version of the UNIX operations system is currently under development through a joint effort of New Mexico State University and the Hebrew University of Jerusalem. A microprocessor version of the UNIX kernel has been developed which will run on any PDP‐11 or LSI‐11 based processing element and allows processes to run in a UNIX ‘look‐alike’ environment. Each process is fully transportable among all processors in the system. Although the preliminary version of the system was built in a star configuration, the system is currently being upgraded by the addition of a communication ring with 8‐bit microprocessors as ring interface units. The current paper describes the software structure, the hardware structure and the communication protocol of the system.