Patent ID: 6286070
Filing Date: 2001-09-04
Classification: G06F

Abstract:
A method for arbitrating access requests to a shared memory from a plurality of controllers including a first controller and a second controller having a lower access priority than the first controller, the method comprising:setting an operation mode of the second controller in one of a wait mode and a non-wait mode;deciding the access enabling of the first controller and deciding the access disabling of the second controller in accordance with an access priority when a first access request and a second access request from the first and second controllers compete with each other; andsupplying a first signal for resetting a wait state for the first controller; andsupplying a second signal for resetting a wait state for the second controller such that the second controller executes other processing when the second controller is set in the non-wait mode and the access to the shared memory by the second controller is disabled.