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
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;
Conference_Titel :
On-Line Testing Symposium, 2003. IOLTS 2003. 9th IEEE
Print_ISBN :
0-7695-1968-7
DOI :
10.1109/OLT.2003.1214381
