Patent ID: 6442655
Filing Date: 2002-08-27
Classification: G06F

Abstract:
A coherency control method, comprising the steps of:storing a first request to a first address in a first queue; receiving a second request directed to a second queue including request type and a request memory address; receiving a second directed to a second queue including request type a request memory address; examining said first queue for a queued address matching said request memory address responsive to said request type; rejecting said request responsive to said request memory address matching said first address; retrying said second request following a retry latency; enabling a compare path to store queues for head requests; enabling a compare path to read queues for store requests; testing an enabled path for address compare responsive to said second request; and rejecting said second request and prioritizing for execution requests in the queue of said enabled path having an address compare responsive to finding an address compare on said enabled path.