Patent ID: 7174409
Filing Date: 2007-02-06
Classification: G06F,Y10S

Abstract:
1. A method of accessing a system memory having first and second memory modules, each memory module having a plurality of memory devices and a respective memory hub coupled to a respective plurality of memory devices, the memory hubs coupled to each other, the method comprising: generating memory requests by a memory hub controller for access to the plurality of memory devices of the first memory module; coupling the memory requests from the memory hub controller to the first memory hub; generating memory requests by a processor circuit of an expansion module coupled to the second memory hub for access to the plurality of memory devices of the second memory module; coupling the memory requests from the processor circuit to the second memory hub; generating memory responses by the second memory hub in response to receiving the memory request from the processor circuit; and coupling the memory responses from the second memory hub to the processor circuit of the expansion module.