Patent ID: 7848899

Claim:
A testing system for testing integrated circuit devices, the testing system comprising: a processor of an application system, wherein the processor is configured to perform an application task such that first test data is transmitted to a first reference integrated circuit device provided within the application system via at least one coupling between the processor and the first reference integrated circuit device; a first controller coupled to the at least one coupling, wherein the first controller is configured to tap the first test data transmitted via the at least one coupling, transmit second test data to a second reference integrated circuit device, wherein the second test data comprises at least a portion of the first test data, receive reference response data from the second reference integrated circuit device in response to the second test data transmitted thereto, transmit the second test data to at least one integrated circuit device under test, and transmit the reference response data to at least one comparator coupled to the at least one integrated circuit device under test; and the at least one comparator configured to receive the reference response data from the first controller, receive test response data generated by the at least one integrated circuit device under test in response to the second test data transmitted thereto, compare the reference response data to the test response data, and generate at least one test result from at least one comparison of the reference response data to the test response data.