Patent ID: 7024510

Claim:
A dual-mode host-to-I/O bridge, comprising: core logic, the core logic including: interfaces for at least two host buses adapted to couple a central processing unit(s) and the host-to-I/O bridge; interfaces for at least two I/O buses adapted to couple at least two I/O devices and the host-to-I/O bridge, wherein the at least two I/O buses are defined as the same logical bus number; and configuration logic adapted to selectively set the host-to-I/O bridge in one of at least a non-partitioned mode and a partitioned mode, wherein the at least two I/O buses behave as a single I/O bus in the non-partitioned mode, and wherein the at least two I/O buses behave as separate I/O buses having the same logical bus number in the partitioned mode.