ThispaperpresentsanewapproachfortheevaluationofFPGAroutingresourcesinthepresenceofinterconnectfaults.Allpossibleinterconnectfaultsforprogrammableswitchesandwiringchannelsareconsidered.SignalroutinginthepresenceoffaultyinterconnectresourcesisanalyzedatbothswitchblockandtheentireFP