BIB-VERSION:: CS-TR-v2.0
          ID:: STAN//CS-TR-83-945
       ENTRY:: June 01, 1995
ORGANIZATION:: Stanford University, Department of Computer Science
       TITLE:: Perseus: retrospective on a portable operating system
        TYPE:: Technical Report
      AUTHOR:: Zwaenepoel, Willy
      AUTHOR:: Lantz, Keith A.
        DATE:: February 1983
       PAGES:: 10
    ABSTRACT:: We describe the operating system Perseus, developed as part
               of a study into the issues of computer communications and
               their impact on operating system and programming language
               design. Perseus was designed to be portable by virtue of its
               kernel-based structure and its implementation in Pascal. In
               particular, machine-dependent code is limited to the kernel
               and most operating systems functions are provided by server
               processes, running in user mode. Perseus was designed to
               evolve into a distributed operating system by virtue of its
               interprocess communication facilities, based on
               message-passing. This paper presents an overview of the
               system and gives an assessment of how far it satisfied its
               original goals. Specifically, we evaluate its interprocess
               communication facilities and kernel-based structure, followed
               by a discussion of portability. We close with a brief history
               of the project, pointing out major milestones and stumbling
               blocks along the way.
       NOTES:: [Adminitrivia V1/Prg/19950601]
         END:: STAN//CS-TR-83-945