Method and apparatus for maintaining deterministic behavior in a

Details Method and apparatus for maintaining deterministic behavior in a Method and apparatus for maintaining deterministic behavior in a

1991-12-26

1994-03-22

Richardson, Robert L.

395575, G06F 1100, G06F 1300

Patent

active

052972763

ABSTRACT:
Determinism is maintained in a synchronous first system although the first system receives behaviorchanging signals from a second system running asynchronously relative to the first system. The second system refrains from sending behavior-changing signals to the first system until the first system stops its clock at a prespecified clock cycle and signals the second system of the event. The second system then downloads the behavior-changing signals into the first system and restarts the first system clock. The first system awakens to discover that the behavior-changing signals have been received during the prespecified clock cycle. This is repeated over multiple runs, and in each run the same behavior-changing signals are transferred at the same prespecified clock cycles of the first system. Deterministic behavior is thereby maintained in the first system.

REFERENCES:
patent: 4937741 (1990-06-01), Harper et al.
patent: 5005174 (1991-04-01), Bruckert et al.

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