| 摘要 |
<p>A data processing system 10 includes a processor 12, system memory 15 and a number of peripheral devices 401, 403, and one or more bridges 400 which may connect between the processor, memory and peripheral devices and other hosts or peripheral devices such as in a network. A bridge, such as a PCI host bridge, connects between a primary bus (e.g system bus) 14 and a secondary bus 16. The host bridge 400 provides a dual host bridge function which creates two secondary bus interfaces. This allows increased loading capability under one dual host bridge compared to a lesser number of slots allowed under one normal host bridge. Also included is additional control logic for providing arbitration control and for steering transactions to the appropriate bus interface. Additionally, peer to peer support across the two secondary bus interfaces is provided. <IMAGE></p> |
