| 摘要 |
A high-performance and miniaturizable duplexed processor system is provided. In communications between respective corresponding processor units on 0- and 1-system processor cards C 0 and C 1 , a sequence number is added to transmission data to assess the continuity of the transmission data, and to thereby retransmit missing data. Also, in communications between processor units on the same processor card, interprocessor connection units PC 0 and PC 1 autonomously transfer data. Furthermore, each processor card is equipped with an input/output unit (an input/output switching unit and an input/output interface unit), so that each input/output switching unit IC 0 and IC 1 switches input data paths according to operating states of the processor card equipped therewith.
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