Patent US 5,483,645

The present invention is an apparatus comprising first and second addressable arrays and an input for receiving address information related to the arrays. A first request line receives from a first source first request signals for access to the first and second arrays based on the address information. A second request line receives from a second source second request signals for access to the first and second arrays based on the address information. A processing circuit transmits the address information to the first and second addressable arrays in response to the first and second request signals based on a priority of the first and second request signals.