Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2011-01-04
2011-01-04
Rinehart, Mark (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C710S306000
Reexamination Certificate
active
07865644
ABSTRACT:
In a method and apparatus associated with a bus controller, a set of mechanisms are selectively added to the bus controller, as well as to slave devices connected to the bus controller. A mechanism is also added to one or more master devices connected to the bus controller, in order to provide the master devices with a transaction ordering capability. The added mechanisms collectively achieve the objective of supporting connection of multiple slave devices to a common controller interface, and at the same time allowing pipelined operation of the slave devices. One embodiment of the invention is directed to a method for use with a bus and an associated bus controller, wherein the bus controller has respective master and slave interfaces for use in selectively interconnecting master devices and slave devices. The method comprises the steps of connecting one or more of the master devices to one of the master interfaces, and connecting each of a plurality of slave devices to the same one of the slave interfaces. The method further comprises operating a connected master device to send multiple commands to a selected one of the connected slave devices in accordance with a command pipelining procedure.
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Drerup Bernard Charles
Nicholas Richard
Srinivasan Prasanna
International Business Machines - Corporation
Patel Nimesh G
Rinehart Mark
Talpis Matthew B.
Yee & Associates P.C.
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