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Issue No. 12 - December (1994 vol. 20)
ISSN: 0098-5589
pp: 933-947
<p>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.</p>
real-time systems; specification languages; logic programming languages; Modechart; specification language; real-time systems; semantics; real-time logic; absolute timing; real-time clock; RTL formulas; hierarchical organization; RTL assertions; abstraction levels; graphical implementation; rapid prototyping; timing constraints; SARTOR

A. Mok and F. Jahanian, "Modechart: A Specification Language for Real-Time Systems," in IEEE Transactions on Software Engineering, vol. 20, no. , pp. 933-947, 1994.
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