Certain embodiments of the invention may be found in a method and system for monitoring a set of semaphore registers using a limited-width test bus. Each semaphore register represents a separate hardware resource. The bits in a semaphore register are monitored jointly to determine whether the hardware...http://www.google.com.au/patents/US7222202?utm_source=gb-gplus-sharePatent US7222202 - Method for monitoring a set of semaphore registers using a limited-width test bus