Title: CLASS - Composite Language Approach for System Simulation (A Tutorial)
Abstract: There are several possible approaches to providing both discrete event and continuous system simulation capability in the same modeling context. One approach is to develop a new language which has this capability. Another, which is addressed in this tutorial, is the use of compatible languages in combination. One possibility4 involves the use of SIMSCRIPT II as the basic language. Another possibility is the use of the General Purpose Simulation System (GPSS) and its “HELP” language FORTRAN. This tutorial explains the basic capabilities required for discrete event modeling, those needed for continuous system simulation, and the considerations involved in achieving a “hybrid” language capability. It also includes application examples, concentrating on an application requiring additional language facilities for modeling process control computer systems.