The inversion algorithm for digital simulation

The inversion algorithm is an event-driven algorithm, whose performance rivals or exceeds that of levelized compiled code simulation, even at activity rates of 50% or more. The inversion algorithm has several unique features, the most remarkable of which is the size of the run-time code. The basic algorithm can be implemented using no more than a page of run-time code, although in practice, it is more efficient to provide several different variations of the basic algorithm. The run-time code is independent of the circuit under test, so the algorithm can be implemented either as a compiled code or an interpreted simulator with little variation in performance. Because of the small size of the run-time code, the run-time portions of the inversion algorithm can be implemented in assembly language for peak efficiency, and still can be retargeted for new platforms with little effort.