International Business Machines Corporation

Donna C Myers

Peter Kenneth Szwed

Carl Alfred Bender

Donald G Grice

Derrick LeRoy Garmire

Christine M Desnoyers

Michael Patrick Muhlada

William R Milani

Vadim M Tsinker

Sheryl M Genco

Antoinette E Vallone

A combiner/memory system interconnects a plurality of computer systems using for example the new HIPPI standard link. The combiner system includes it's own internal storage for rapid shared access to all connected computer systems. The combiner/memory system includes a smart switch for reading header information, arbitrating messsages and connecting computers to each other or to the internal shared storage. The system also includes a mechanism for synchronization of cooperating processes.

Multiple computer system with combiner/memory interconnection system

System speed boundary tests are made on nets interconnecting field programmable logic without any external testing equipment or special printed circuit board layout for such a test. Only a single net interconnecting all field programmable logic in a ring is employed. The tests are made for opens and shorts and localize faults to a particular net. Nets interconnecting field programmable logic are tested utilizing the information stored in the circuit design file and the reprogrammability of the field programmable logic to construct a circuit that is then implemented in the field programmable logic and tests all interconnecting nets.

Method and apparatus for diagnosing net interconnect faults using echo

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Kingston, NY, United States of America

Donna C Myers