Method of locating a fault in a logic IC device

摘要

A fault in a logic IC device including a plurality of logic cells is diagnosed by the use of an intentional fault. The intentional fault is introduced into a portion of logical operation data for the logic cells of the device to produce a faulty logical operation data. That portion of the logical operation data corresponds to a fault candidate which represents a location in the device at which hazard is supposed to have occurred to make it uncertain whether or not a fault exists at the location.