SNOOP CONTROLLER FOR PENDED BUS PROTOCOL

摘要

The snoop controller provides a pended bus protocol which enables data to be read always correctly in multiple processors. It includes comparators (4,5) for comparing the address from a bus with the contents of an internal tag comparator (7) and a status memory (8), and a decoder (2) for applying SNACK signal to the bus to provide the time for cache coherence when the result of the comparator (5) is true.