1
Kevin Lee Sherman, John Edward Derrick: Cache coherency method and system employing serially encoded snoop responses. International Business Machines Corporation, Heslin Rothenberg P C, August 19, 1997: US05659710 (78 worldwide citation)

A cache coherency method and system are provided for ensuring coherency of accessed data for each bus master of a plurality of bus masters in a processing system, wherein at least some bus masters have a cache means connected to a system bus, which provides communication to a main memory for access ...


2
Michael Edward Montgomery, Kevin Lee Sherman: Method and apparatus for locking and unlocking a semaphore. International Business Machines Corporation, Mark F Chadurjian, March 4, 2003: US06529933 (11 worldwide citation)

A data processing system that automatically changes a semaphore in response to a test and set or clear and invalidate instruction. When a device desires to either test and set or clear and invalidate a semaphore, it transfers an instruction having a test and set or clear and invalidate operation cod ...