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Cache State wrt ReadShared and ReadOnce

Explain how cache state is updated with respect to ReadShared and Readonce transactions within snooped manager in ACE (Table D5-2, D5-7,D5-8)

  • When the manager receives a snoop, it has a choice as to how to handle the snoop within the restrictions specified in these tables.

    The actual mechanism and choice made by the manager depends on that specific manager, and is effectively implementation defined.