Logic simulation with current-limited switches

A switch-level logic simulator for MOS networks based on the theory of current-limited switches is described. It was derived from a switch-level timing simulator by suppressing time-related information and by eliminating invalid events. The simulator obeys Kirchoff's laws and after initialization every node has a known voltage. It can thus be used to drive analog simulation. Fault simulation is easily incorporated by representing the line-open fault by an open circuit and the node-short fault by a short circuit. Examples demonstrate application to both logic and fault simulation.<
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