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V60/V70 microprocessor and its systems support functions

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3 Author(s)
Y. Yano ; NEC Corp., Kawasaki, Japan ; Y. Koumoto ; Y. Sato

Two advanced 32-bit microprocessors, the V60 and V70 ( mu PD70616 and mu PD70632, respectively), and their support functions for operating systems and high-reliability systems are described. Three operating system functions, namely, the virtual memory support functions, context-switch functions, and asynchronous trap functions are examined. A basic mechanism for high-reliability-system implementation, called FRM (functional redundancy monitoring), is discussed. FRM allows a system to be designed in which multiple V60s (or V70s) form a configuration in which one processor in the system acts as a master while the others act as monitors. An FRM board that uses three V60s in its redundant core is introduced.<>

Published in:

Compcon Spring '88. Thirty-Third IEEE Computer Society International Conference, Digest of Papers

Date of Conference:

Feb. 29 1988-March 3 1988