Peripheral unit controller

Details Peripheral unit controller Peripheral unit controller

G - Physics

06

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354/231

G06F 9/00 (2006.01) G06F 11/16 (2006.01) G06F 13/28 (2006.01) G06F 15/00 (2006.01) G06F 15/17 (2006.01) H04Q 3/545 (2006.01)

Patent

CA 1152221

LIRON-1 PERIPHERAL UNIT CONTROLLER Abstract of the Disclosure This invention relates to a peripheral unit controller in a data processing system. The peripheral unit controller consists of two sub- processors whose outputs are matched. In addition, each duplicated subprocessor contains a pair of microprocessors whose outputs are also matched. The synchronization scheme allows each microprocessor to run its own diagnostics independently, and to synchronize itself with the other microprocessor of the pair. After the synchronization occurs in both microprocessors in each of the sub-processors, the sub-processors are synchronized. Synchronization is achieved by using a real-time clock and the interrupt structure of each microprocessor.

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