DocumentCode
1682195
Title
A watchdog processor to detect data and control flow errors
Author
Benso, Alfredo ; Di Carlo, Stefano ; Di Natale, Giorgio ; Prinetto, Paolo
Author_Institution
Dipt. di Automatica e Informatica, Politecnico di Torino, Italy
fYear
2003
Firstpage
144
Lastpage
148
Abstract
A watchdog processor for the MOTOROLA M68040 microprocessor is presented. Its main task is to protect from transient faults caused by SEUs the transmission of data between the processor and the system memory, and to ensure a correct instructions´ flow, just monitoring the external bus, without modifying the internal architecture of the M68040. A description of the principal procedures is given, together with the method used for monitoring the instructions´ flow.
Keywords
data flow graphs; error detection; fault tolerant computing; microprocessor chips; EMI; MOTOROLA M68040 microprocessor; SEU; control flow errors; data flow errors; electromagnetic interference; external bus; instruction flow; internal architecture; system memory; transient faults; watchdog processor; Aerospace electronics; Circuit faults; Electromagnetic interference; Electromagnetic radiation; Electromagnetic radiative interference; Error correction; Microprocessors; Monitoring; Protection; Wiring;
fLanguage
English
Publisher
ieee
Conference_Titel
On-Line Testing Symposium, 2003. IOLTS 2003. 9th IEEE
Print_ISBN
0-7695-1968-7
Type
conf
DOI
10.1109/OLT.2003.1214381
Filename
1214381
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