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Design considerations for a single-chip fault tolerant VLSI microprocessor

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1 Author(s)
Goode, A.J. ; University of Manchester Institute of Science & Technology, Department of Electrical Engineering & Electronics, Manchester, UK

A design approach is presented for a general-purpose VLSI fault tolerant microprocessor, with redundancy designed into the internal chip architecture. The design features are internal automatic state storage and rollback/retry mechanism and a microprogrammed ALU design. The reliability of the design is estimated using a system model of reliability behaviour, and is compared with that of other fault tolerant design strategies. Finally, the effect of the fault tolerance on processor performance is discussed.

Published in:

Software & Microsystems  (Volume:4 ,  Issue: 3 )