US Patent 7511525 Boundary-scan system architecture for remote environmental testing

A system including a chassis operable to receive a plurality of physical application modules and a test port via which an external test device is communicatively coupled to the system. Each physical application module includes a module bridge interface and boundary-scan test functionality. The test port is communicatively coupled to each of a chassis bridge interface in the chassis. When the module bridge interface of each of the physical application modules is communicatively coupled to a respective one of the plurality of chassis bridge interfaces, the boundary-scan test functionality of the respective physical application module is communicatively coupled to the test port.