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A Unified Approach To Mixed-Mode Simulation, Roger D. Chamberlain, Mark A. Franklin
A Unified Approach To Mixed-Mode Simulation, Roger D. Chamberlain, Mark A. Franklin
All Computer Science and Engineering Research
This paper presents a unified approach to mixed-mode simulation. It investigates the algorithms for both logic and circuit simulation, considering their similarities and differences, and a general framework is presented for integrating the two algorithms in uniform manner. The time advance mechanisms and component functional evaluations of the algorithms are show to be similar in nature, and mechanisms for the translation of information represented uniquely in the two algorithms are given. The resulting integrated algorithms is capable of performing mixed-mode simulation, where a circuit is partitioned into discrete and continuous regions, and each region is simulated at the appropriate level. …
Collecting Data About Logic Simulation, Roger D. Chamberlain, Mark A. Franklin
Collecting Data About Logic Simulation, Roger D. Chamberlain, Mark A. Franklin
All Computer Science and Engineering Research
Design of high performance hardware and software based gate-switch level logic simulators requires knowledge about the logic simulation process itself. Unfortunately, little data is publically available concerning key aspects of this process. An example of this is the lack of published empirical measurements relating to the time distribution of events generated by such simulators. This paper presents a gate-switch level logic simulator lsim which is oriented towards the collection of data about the simulation process. The basic components of lsim are reviewed, and its relevant data gathering facilities are discussed. An example is presented which illustrates the use of lsim …