Electrical computers and digital processing systems: processing – Processing control – Specialized instruction processing in support of testing,...
Reexamination Certificate
2007-06-26
2010-11-02
Chan, Eddie P (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Specialized instruction processing in support of testing,...
C718S108000, C711S141000
Reexamination Certificate
active
07827391
ABSTRACT:
An apparatus and method are disclosed for single-stepping coherence events in a multiprocessor system under software control in order to monitor the behavior of a memory coherence mechanism. Single-stepping coherence events in a multiprocessor system is made possible by adding one or more step registers. By accessing these step registers, one or more coherence requests are processed by the multiprocessor system. The step registers determine if the snoop unit will operate by proceeding in a normal execution mode, or operate in a single-step mode.
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Blumrich Matthias A.
Salapura Valentina
Alrobaye Idriss N
Chan Eddie P
International Business Machines - Corporation
Morris, Esq. Daniel P.
Scully , Scott, Murphy & Presser, P.C.
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