Patent ID: 6986005
Filing Date: 2006-01-10
Classification: G06F

Abstract:
1. A method of controlling access to a shared memory of a multiprocessor system, the multiprocessor system comprising a first bus and a second bus coupled to the shared memory, the first bus coupled to a first processor, and the second bus coupled to a second processor, the method comprising the steps of: requesting exclusive access to a first memory location of the shared memory by the first processor; granting exclusive access to the first memory location of the shared memory to the first processor; allowing access to a second memory location of the shared memory to the second processor while the first processor has exclusive access to the first memory location; and storing access request information associated with the exclusive access in a first register in a first memory controller and in a second register in a second memory controller, the step of requesting exclusive access comprising the steps of: the step of granting exclusive access comprising the steps of: the step of assigning exclusive access to the first memory location by the switch comprising the steps of: