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RFC 34 - Some Brief Preliminary Notes on the Augmentation Research Center Clock

  • Status: Unknown
  • Published: 26 February 1970
  • Stream: Legacy
  • Errata: No Errata

Document Information​

  • RFC Number: 34
  • Title: Some Brief Preliminary Notes on the Augmentation Research Center Clock
  • Authors: Bill English (SRI/ARC)
  • Date: 26 February 1970
  • Category: Unknown

Abstract​

RFC 34 describes the ARC clock system, which writes a time reference into the core memory of the XDS 940 computer. Two forms of time information are available: absolute time, held in two adjacent core words that carry the month, day, and year codes in the first word and the hour, minute, and second codes in the second, all in straight binary; and relative time, held in a single core word taken from a 24-bit binary accumulator that is updated either every 100 microseconds or every millisecond. The note gives the expected accuracy of the initial setting and of the short-term and long-term readings.

Table of Contents​