A68SIM Discrete Event Simulation in ALGOL 68

Summary

A68SIM is a program system based on ALGOL 68, containing a set of procedures and operator definitions, which are designed to aid the writing of ALGOL-68-programs for discrete event simulation. A language with the power and flexibility of ALGOL 68 provides a variety of means for carrying out simulations, and A68SIM is just one of the possible approaches. A68SIM is a set of basic elements, and proceeding from these elements the user has a lot of opportunities in formulating and solving his simulation problem. This paper describes some features of A68SIM, originally developed by D.C.S. Shearn, Division of Economic Studies, University of Sheffield, U.K. and since some years implemented on our CD CYBER 172 and CYBER 76 at the Regional Computer Center at the University of Hannover, and compares it with SIMULA 67 and GASP IV, two other simulation “languages” at our site.