G - Physics – 06 – F
Patent
G - Physics
06
F
354/234, 354/230
G06F 13/34 (2006.01)
Patent
CA 1251572
MULTIPLE PORT SERVICE EXPANSION ADAPTER FOR A COMMUNICATIONS CONTROLLER Abstract Bus interconnection between the system busses of a multi-port communications controller and the busses of one or more multi-port adapters is facilitated with a new architecture for providing an interconnection controller. A programmably adjustable adapter and port interface controller is combined via a scannerless communications controller with a bus interconnection control logic that handles both DMA and interrupt mode data transfers for a large number of channels. The invention provides an improved means for transferring data to or from numerous communication channel devices within a processor based communications system in such a manner that the optimum mode of data transfer may be individually programmed for each channel as system environment conditions demand.
505399
Burrus Gilbert S. Jr.
Cooper Ronald J.
Marr Michael R.
Marsico Mario A.
Pescatore John C.
Barrett B.p.
International Business Machines Corporation
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