SEMICONDUCTOR DEVICE FOR PROCESSING DATA

PURPOSE:To obtain a semiconductor device as a one-chip microcomputer constituting a high reliability computer with duplex system constitution. CONSTITUTION:A temporary storage buffer 34 for holding the processing result of the microcomputer is provided so as to delay the actual updating of an intern...

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Bibliographic Details
Main Author FUJIOKA ISAO
Format Patent
LanguageEnglish
Published 23.04.1993
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PURPOSE:To obtain a semiconductor device as a one-chip microcomputer constituting a high reliability computer with duplex system constitution. CONSTITUTION:A temporary storage buffer 34 for holding the processing result of the microcomputer is provided so as to delay the actual updating of an internal general purpose register 22. When the output signals of a processor executing two equal processings are compared so as to detect an error by noncoincident result, processing invalidation interruption 36 invalidates processing result adding the error, which is held in the temporary storage buffer 34, and the updating of the internal general purpose register 22 is suppressed. The processing simultaneously comes back to an instruction number where the processing error occurs, which is held in the temporary storage buffer 34, and the execution of an instruction is restarted.
Bibliography:Application Number: JP19910261864