System for producing combination circuit to satisfy prescribed delay time by deleting selected path gate and allowing to perform the permissible function for initial circuit

摘要

A method of automatically forming a combinational LSI circuit comprising two processes. A first process of computing the permissible function of each element (gate) of a given circuit. A second process of connecting a gate having a shorter signal propagation time to a gate located on a path that does not satisfy a prescribed delay time and removing the gate from the path. Thus, an arrangement of the circuit is changed and the maximum delay time of the circuit is suppressed below the prescribed delay time. This method efficiently shortens the delay time of the combinational circuit to satisfy the prescribed delay time.