1. A method of processing a request in a computer system, comprising the acts of: (a) initiating a read request from a requesting agent, the requesting agent residing on a bus, wherein the read request has an address corresponding to a memory location; (b) receiving the read request at a processor controller; (c) sending the read request from the processor controller to an access controller; (d) sending a deferred reply from the processor controller to the requesting agent when the processor controller is free to process the read request; (e) delivering data residing at the address corresponding to the memory location to the access controller; (f) delivering the data from the access controller to the processor controller; and (g) delivering the data from the processor controller to the requesting agent.