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SGM v1.1 Released

                    State Graph Manipulators (SGM) 
                     New Version 1.1 Released!!!

  State Graph Manipulators (SGM) is a high-level state-graph manipulation 
  tool for verification non-experts as well as experts. The tool has
  undergone further refining and testing. A much more stable version (v1.1)
  is now released for downloading. This version provides both a batch
  and an interactive user interface. The next version (v1.2) scheduled
  to be released around January 31, 1999 will have a flexible easy-to-use
  graphical user interface (GUI).

                     Changes in v1.1 from v1.0

(1) Memory usage drastically reduced to 1/8th of that originally 
    required in SGM v1.0. Memory leaks removed using Purify, a 
    commercial program debugging tool from Rational Software.
(2) SGM input language syntax modified to accomodate non-symmetrical
    system descriptions. Non-symmetrical systems can now be described!
(3) A new manipulator (state-graph reduction technique) implemented:
    BIT (Bypass Internal-Transition).
(4) Totally 5 application examples included with v1.1 distribution.
    (a) Fischer's Mutual Exclusion Protocol,
    (b) CSMA/CD Protocol,
    (c) Token Ring Network,
    (d) PATHO OS Priority-Based Task Execution, and
    (e) Bus Arbiter.
(5) User manual updated to version 1.1.
(6) Programming bugs/errors fixed.
(7) Interactive user interface improved.
(8) A graphical user interface has been developed and is being testing
    currently, it will be released in the next version SGM v1.2
    around January 31, 1999.

Visit URL: "http://www.iis.sinica.edu.tw/~eric/sgm/" to download SGM.
SGM web site completely renewed for easier download and access.

            Dr. Pao-Ann Hsiung and Dr. Farn Wang
              Institute of Information Science
            Academia Sinica, Taipei, TAIWAN, R.O.C.
            E-mail: {eric,farn}@iis.sinica.edu.tw

                     Dr. Pao-Ann (Eric) Hsiung           
Institute of Information Science | E-MAIL: eric@iis.sinica.edu.tw
Academia Sinica                  | TEL   : +886-2-27883799 ext. 2453
Nankang, Taipei 115              | FAX   : +886-2-27824814
TAIWAN, Republic of China.       | URL   : http://www.iis.sinica.edu.tw/~eric