FAIL-FIRST, FAIL-FUNCTIONAL AND FAULT-TOLERANT MULTIPROCESSOR SYSTEM

PROBLEM TO BE SOLVED: To provide a multiprocessor system which can attain the fail-first, fail-functional and fault tolerant actions. SOLUTION: This multiprocessor system includes the sub-processor systems 10A and 10B which have the substantially same constitution. The CPU 12A and 12B of systems 10A...

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Hauptverfasser:	JIEEMUZU SUTEIIBUNSU KURETSUKA, UIRIAMU EFU BURUTSUKAATO, SUTEIIBUN SHII MEIAAZU, JIYON MAIKERU BURAUN
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a multiprocessor system which can attain the fail-first, fail-functional and fault tolerant actions. SOLUTION: This multiprocessor system includes the sub-processor systems 10A and 10B which have the substantially same constitution. The CPU 12A and 12B of systems 10A and 10B can communicate with the I/O devices 171 to 17n or the CPU of the multiprocessor system via the routing devices 14A and 14B. The communication is performed between the I/O devices and the multiplexed CPUs by means of the messages which are turned into a packet. These CPUs and I/O devices are written into or read out of the CPU of the multiprocessor system. The protection of the CPU memory is maintained by every CPU that has a priority check function of the read/write operations which are carried out against the CPU memory.