An Enhanced Processor Buffered Interface (22c) for use in a multiprocessor system (10). The Enhanced Processor Buffered Interface executes an Atomic Fetch and Add operation for maintaining multiprocessor consistency and for minimizing the required participation of an attached processor (22a) in reading...http://www.google.com/patents/US5485594?utm_source=gb-gplus-sharePatent US5485594 - Apparatus and method using an atomic fetch and add for establishing temporary ownership of a common system resource in a multiprocessor data processing system