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HandWiki. IBM CP-40. Encyclopedia. Available online: https://encyclopedia.pub/entry/30663 (accessed on 21 October 2026).
HandWiki. IBM CP-40. Encyclopedia. Available at: https://encyclopedia.pub/entry/30663. Accessed October 21, 2026.
HandWiki. "IBM CP-40" Encyclopedia, https://encyclopedia.pub/entry/30663 (accessed October 21, 2026).
HandWiki. (2022, October 21). IBM CP-40. In Encyclopedia. https://encyclopedia.pub/entry/30663
HandWiki. "IBM CP-40." Encyclopedia. Web. 21 October, 2022.

IBM CP-40

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The content is sourced from: https://handwiki.org/wiki/IBM_CP-40

CP-40 was a research precursor to CP-67, which in turn was part of IBM's then-revolutionary CP[-67]/CMS – a virtual machine/virtual memory time-sharing operating system for the IBM System/360 Model 67, and the parent of IBM's VM family. CP-40 ran multiple instances of client operating systems – particularly CMS, the Cambridge Monitor System, built as part of the same effort. Like CP-67, CP-40 and the first version of CMS were developed by IBM's Cambridge Scientific Center (CSC) staff, working closely with MIT researchers at Project MAC and Lincoln Laboratory. CP-40/CMS production use began in January 1967. CP-40 ran on a unique, specially modified IBM System/360 Model 40.

cp-67 cp-40 cp-67/cms

References

  1. Varian (1997), p. 11 (the "CAT box")
  2. Pugh, Johnson & Palmer (1991), p. 741 (note 218 to Ch. 6)
  3. A.B. Lindquist; R.R. Seeber; L.W. Comeau (December 1966). "A time-sharing system using an associative memory". Proceedings of the IEEE 54 (12): 1774–1779. doi:10.1109/PROC.1966.5261.  https://dx.doi.org/10.1109%2FPROC.1966.5261
  4. Varian (1997), p. 14 – novelty of CMS interface
  5. Creasy (1981), p. 489 – flat file system
  6. Varian (1997), pp. 3, 9, 16 – genesis of CP-40 project
  7. Creasy (1981), p. 485 – design goals
  8. W. O'Neill, "Experience using a time sharing multiprogramming system with dynamic address relocation hardware", Proc. AFIPS Computer Conference 30 (Spring Joint Computer Conference, 1967), pp. 611–621 – thrashing on IBM M44/44X
  9. L.W. Comeau, "Operating System/360 Paging Studies", IBM Storage Hierarchy System Symposium, December 1966 – thrashing on the Atlas, cited in Varian (1997), p. 17.
  10. Creasy (1981), p. 485 – similar to but independent of IBM M44/44X
  11. Creasy (1981), p. 486 – virtualization strategy: problem state execution, plus address translation
  12. Varian (1997), pp. 9, 13
  13. Comeau (1982), pp. 40, 42–43, cited in Varian (1997), pp. 9, 13
  14. L. Talkington, "A Good Idea and Still Growing", White Plains Development Center Newsletter, Vol. 2, No. 3 (March 1969), quoted in Varian (1997), p. 10.
  15. Pugh, Johnson & Palmer (1991), pp. 364–365
  16. Creasy (1981), p. 485 – separating CP from CMS
  17. Creasy (1981), p. 485 – scope of CMS
  18. Varian (1997), pp. 12, 15–16 – CMS booting under BPS
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