G - Physics – 06 – F
Patent
G - Physics
06
F
354/225.2
G06F 11/00 (2006.01) G06F 11/14 (2006.01)
Patent
CA 1264198
A CIRCUIT AND A METHOD FOR THE SELECTION OF ORIGINAL DATA FROM A REGISTER LOG CONTAINING ORIGINAL AND MODIFIED DATA Abstract of the Disclosure A circuit and a method for maintaining copies of original index registers and copies of modified index registers such that in the event original copies of the index registers are needed, they may be re- stored. The circuit and method are disclosed for use in a fault tolerant system wherein in the event of a rollback, original copies of the index registers may be restored to a processor, even if some of the index registers were modified in the previous execution of a command by the processor.
522680
Armstrong Rolfe D.
Cole Victor F.
Corcoran Jon M.
Ncr Corporation
Smart & Biggar
LandOfFree
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