APPARATUS, METHOD, AND PROCESSOR

摘要

PROBLEM TO BE SOLVED: To synchronize redundant processors by using a state history.SOLUTION: An apparatus comprises: two processors 110 and 120; state storages 130 and 140 for each processor; and control logic 158. Each processor executes the same instructions. The state storage stores compressed processor state information for each instruction executed by the processors. The control logic synchronizes the two processors on the basis of entries from the state storage.