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    • Source: SHARE Operating System

      • The SHARE Operating System (SOS) is an operating system introduced in 1959 by the SHARE user group. It is an improvement on the General Motors GM-NAA I/O operating system, the first operating system for the IBM 704. The main objective was to improve the sharing of programs.
      The SHARE Operating System provided new methods to manage buffers and input/output devices. Like GM-NAA I/O, it allowed execution of programs written in assembly language.
      SOS initially ran on the IBM 709 computer and was then ported to its transistorized successor, the IBM 7090.
      A series of articles describing innovations in the system appears in the April 1959 Journal of the Association for Computing Machinery.
      In 1962, IBM discontinued support for SOS and announced an entirely new (and incompatible) operating system, IBM 7090/94 IBSYS.


      See also


      Multiple Console Time Sharing System
      Timeline of operating systems
      SQUOZE


      References




      Further reading


      Shell, Donald L. (April 1959) [October 1958]. "The SHARE 709 System: A Cooperative Effort". Journal of the ACM. 6 (2): 123–127. doi:10.1145/320964.320966. S2CID 16476514. (5 pages)
      Boehm, Elaine M.; Steel, Jr., Thomas B. (April 1959). "The SHARE 709 System: Machine Implementation of Symbolic Programming". Journal of the ACM. 6 (2): 134–140. doi:10.1145/320964.320968. S2CID 16545134. (7 pages)
      DiGri, Vincent J.; King, Jane E. (April 1959) [1958-06-11]. "The SHARE 709 System: Input-Output Translation". Journal of the ACM. 6 (2): 141–144. doi:10.1145/320964.320969. S2CID 19660148. (4 pages) (NB. This was presented at the ACM meeting 11-13 June 1958.)
      SOS Reference Manual - SHARE System for the IBM 709 (PDF). New York: SOS Group, International Business Machines Corporation. June 1961 [1959]. X28-1213. Distribution No. 1–5. Archived (PDF) from the original on 2020-06-18. Retrieved 2020-06-18. [1][2]


      External links


      Upload of the SHARE Operating System software and documentation (partial archive)

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