Patent ID: 6067590
Filing Date: 2000-05-23
Classification: G06F

Abstract:
For use in a computer system including at least one processor coupled to a processor bus and a bridge coupled between the processor bus and an expansion bus, a data bus agent for being coupled to the expansion bus, the data bus agent comprising:a storage medium arranged to store data;bus signal paths conforming in number to PCI Special Interest Group PCI bus signal paths and operable to provide signal paths between the storage medium and the expansion bus;said bus agent device adapted to receive data sampled from the storage medium; andsaid bus agent logic selectively responsive to signals in either a first protocol or in a second standard protocol; wherein:said first protocol provides different timing and logical operations from said second standard protocol;said first protocol sampled bus signals are stored in said storage medium during a storage phase of a clock period and a response is driven on the bus by the bus agent logic during a response phase of a subsequent clock period; andwherein in said second protocol the storage medium is not used to receive bus signals, said second protocol sampled bus signals being sampled during one phase of a clock period and a response is driven on the bus during a subsequent phase of the same clock period.