Modechart: A Specification Language for Real-Time Systems

  • Authors:
  • Farnam Jahanian;Aloysius K. Mok

  • Affiliations:
  • Univ. of Michigan, Ann Arbor;Univ. of Texas at Austin, Austin

  • Venue:
  • IEEE Transactions on Software Engineering
  • Year:
  • 1994

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Abstract

Present a specification language for real-time systems called Modechart. The semantics of Modechart is given in terms of real-time logic (RTL), which is especially amenable to reasoning about the absolute (real-time clock) timing of events. The semantics of Modechart has an important property that the translation of a Modechart specification into RTL formulas results in a hierarchical organization of the resulting RTL assertions. This gives us significant leverage in reasoning about properties of a system by allowing us to filter out assertions that concern lower levels of abstraction. Some results about desirable properties of Modechart specifications are given. A graphical implementation of Modechart has been completed.