IBM Remote Access Computing

Operating system
Remote Access Computing (RAX)
DeveloperIBM
OS familyRACS
Working stateDiscontinued
Initial release1966; 58 years ago (1966)
Marketing targetIBM mainframe computers
Available inEnglish
PlatformsIBM System/360
Preceded byRACS
Succeeded byMUSIC
History of IBM mainframe operating systems
Early mainframe computer OSes
  • GM OS & GM-NAA I/O (1955)
  • BESYS (1957)
  • UMES (1958)
  • SOS (1959)
  • IBSYS (1960)
  • MIT CTSS (1961)
  • 7040/7044 Operating System (16/32K) (7040-PR-150)
  • 1410/7010 Operating System
    (1410-PR-155)
Miscellaneous S/360 line OSes
  • BOS/360 (1965)
  • TOS/360 (1965)
  • TSS/360 (1967)
  • MTS (1967)
  • ORVYL (1967)
  • RACS (1965)
    • RAX (1966)
      • MUSIC (1972)
        • MUSIC/SP (1985)
  • CP-40/CMS (1967)
  • CP-67/CMS (1967)
  • VP/CSS (1968)
  • VM/370 (1972)
  • VM/BSE (BSEPP)
  • VM/SE (SEPP)
  • VM/SP (1980)
  • VM/XA MA (1984)
  • VM/XA SF (1985)
  • VM/XA SP (1988)
  • VM/ESA (1990)
  • z/VM (2000)
TPF line
  • v
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  • e

IBM Remote Access Computing (RAX) is a discontinued early time-sharing system for IBM System/360 introduced in 1966.[1] RAX was based on an earlier system, RACS. developed jointly by IBM and Lockheed Aircraft in Marietta, Georgia in 1965. The system influenced a number of other timesharing systems including MCGILL-RAX from McGill University,[2] McGill's MUSIC,[3] and Reactive Terminal Service (RTS) from ITT Data Services.[2][4] In the 1970s Boston University used RAX as the basis of its VPS system, which ran as a guest operating system running on VM/370.[3]

Hardware

RAX was available from IBM as program number 360A-CX-17X, and runs on System/360 Model 30 and above.[1]As announced, it runs on systems with as little as 64 KB of main storage, and supports a mix of up to 63 IBM 1050 typewriter terminals and IBM 2260 display terminals. The languages supported are BASIC, FORTRAN IV, and IBM Basic assembly language.[note 1] In a minimal system with 64 KB memory, user programs can be up to 32 KB, with larger programs allowed on larger systems.[5]

Users

In 1968 RAX was used by the United States Department of Agriculture for their Washington Data Processing Center.[6] It was used in a number of colleges, universities, and corporations, including McGill, Boston University, St. Andrew's in Scotland,[7] The University of Rhode Island, and Bell Aerosystems.[2]

Notes

  1. ^ RTS also supported COBOL.

References

  1. ^ a b IBM Corporation (23 January 2003). "DPD chronology". IBM Archives. Retrieved Apr 29, 2021.
  2. ^ a b c Miller, Roy Watt. "MULTIPLE REGIONS FOR THE MCGILL-RAX TlME-SHARING SYSTEM". Library and Archives Canada. Retrieved Apr 29, 2021.
  3. ^ a b "Boston University's RAX Library". Cryptosmith.com. 12 January 2012. Retrieved Apr 29, 2021.
  4. ^ "(advertisement)". The Pittsburgh Press. June 15, 1969. Retrieved May 2, 2021.
  5. ^ IBM Corporation (August 1967). Catalog of Programs for IBM System/360 August 1967 (PDF). p. 5. Retrieved Apr 25, 2023.
  6. ^ Department of Agriculture Appropriations for 1971. 1970. p. 17. Retrieved Apr 29, 2021.
  7. ^ "Thirty years ago . . ". University of St. Andrews. Retrieved Apr 29, 2021.