An accurate model for ambiguity delay simulation

This paper presents a new approach for the accurate computation of ambiguously delayed waveforms which is implemented in the event-driven logic simulation system LDSIM. Six logic values are defined to be sets of up to four basic values. The mapping function representing the ambiguity delay model only manipulates these basic values. This principle results in a powerful and versatile ambiguity delay model that is clearly presented, easy to implement and guarantees correct delay computation of arbitrary six-valued waveforms with respect to the concept of superposition and causality