Extensible hierarchical object-oriented logic simulation with an adaptable graphical user interface

Craig, Donald C. (1996) Extensible hierarchical object-oriented logic simulation with an adaptable graphical user interface. Masters thesis, Memorial University of Newfoundland.

[English] PDF (Migrated (PDF/A Conversion) from original format: (application/pdf)) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (22MB) [English] PDF - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. (Original Version)

Abstract

Simulators provide an economical means of understanding and evaluating the performance of both abstract and real world systems. In addition to being efficient and easy to use, modern day simulators must be able to cope with the demands of increasing complexity within systems. Simulators must also be easily extensible so that the behaviour and performance of a wide variety of systems may be studied. -- This report will outline the design and implementation of a utility which integrates an interactive, graphical design tool with a discrete event simulation engine that employs the object-oriented paradigm as a means of combating complexity. Central to the simulation technique is the concept of local time, in which each entity being simulated maintains its own notion of time throughout the simulation. This concept promotes component encapsulation and self-containment thereby facilitating the implementation of distributed event-driven simulators. Although the simulation domain described in this report will consist primarily of digital logic circuits, the simulation techniques should also be amenable to the simulation of any discrete event system. -- The graphical user interface front-end to the simulator engine is designed to be easy to use, hence making the underlying simulator engine accessible to a wide audience. The implementation of the interface is loosely integrated with the simulator engine, thereby providing a high degree flexibility between the interface and the simulator itself. The interface and the simulator can each operate as distinct, self-contained applications. As a result, the simulator engine could be configured to employ a different graphical interface and the graphical interface can be adapted for a variety of existing text-based simulator engines.

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