The Datasaab Flexible Central Processing Unit

  • Harold Lawson
Conference paper
Part of the IFIP International Federation for Information Processing book series (IFIPAICT, volume 174)


This panel presentation described some computer architecture developments around the late 1960s and early 1970s. In particular, it placed the Datasaab Flexible Central Processing Unit (FCPU) in perspective to computer industry developments in general. The presentation consisted of several articles as noted in the reference section. It identified papers specifically published about the FCPU as well as other papers related to fundamental aspects of the computer industry. In this paper, I present some further background to the presentation and discussion at the panel session.

Key words

Computer architecture microprogramming hardware-software tradeoffs computer history 


FCPU Related References

  1. Harold Lawson and Bengt Malm, A Flexible Asynchronous Microprocessor, The Scandinavian Computer Journal BIT, Volume 13, Number 2, June 1973.Google Scholar
  2. Harold Lawson and Lars Blomberg. The Datasaab FCPU Microprogramming Language, Proceedings of the SIGPLAN/SIGMICRO Interface Meeting, May 1973. Also published as Saab Scania Report GM-72:296, November 1972.Google Scholar
  3. Lars Blomberg and Harold Lawson, SILL Specification (A System Implementation Language Proposal), Internal Saab Scania Document, May 1974.Google Scholar
  4. Harold Lawson and Bengt Magnhagen, Advantages of Structured Hardware, Proceedings of the Second Annual Symposium on Computer Architecture, Houston, Texas, January 1975. [Selected as the best paper at the Symposium.]Google Scholar
  5. Harold Lawson and Bengt Malm, The Datasaab Flexible Central Processing Unit, A chapter appearing in the Infotek State of the Art Series Report 17 on Computer Design, 1974.Google Scholar
  6. Harold Lawson, An Asynchronous Approach to Microprogramming, A chapter appearing in Microprogramming and Firmware Engineering Methods (editor: Prof. Stanley Habib), Van Nostrand-Reinhold, 1988.Google Scholar

Other References

  1. Harold Lawson, Function Distribution in Computer Systems Architectures, Proc. 3rd Annual Symposium on Computer Architecture, 1976.Google Scholar
  2. Harold Lawson, Salvation from System Complexity, IEEE Computer, Vol. 31, No. 2, Feb 1998, pp 118–120.Google Scholar
  3. Harold Lawson, Infrastructure Risk Reduction, Communications of the ACM, Vol. 40, No. 6, June 1998, ppl20.Google Scholar
  4. Harold Lawson, From Busyware to Stableware, IEEE Computer, Vol. 31, No. 10, Oct 1998, pp ll7–119.Google Scholar
  5. Harold Lawson, Rebirth of the Computer Industry, Communications of the ACM, Vol. 45, No. 6, June, 2002, pp 25–29.MathSciNetCrossRefGoogle Scholar

Copyright information

© International Federation for Information Processing 2005

Authors and Affiliations

  • Harold Lawson
    • 1
  1. 1.Lawson Konsult ABLidingöSweden

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