Bus management based on bus status

Details Bus management based on bus status Bus management based on bus status

2006-06-13

2006-06-13

Vo, Tim (Department: 2112)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S321000, C700S297000

Reexamination Certificate

active

07062664

ABSTRACT:
A P bus from a CPU, an MC bus from a system memory, an IO bus to which an input/output device has been connected, and a G bus for transferring image data of a scanner/printer controller are connected to a system bus bridge (SBB). The SBB connects any of the P bus, G bus and IO bus as a master and any of the MC bus and IO bus as a slave in dependence upon a request from a master. At this time the P bus and IO bus can be connected in parallel with the G bus and MC bus. As a result, access to the memory by the scanner/printer controller can be carried out in parallel with use of the input/output device by the CPU. This makes it possible to process a large quantity of data, such as image data, efficiently.

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