JPS57207961A - Parity diagnosing system - Google Patents

Parity diagnosing system

Info

Publication number
JPS57207961A
JPS57207961A JP56094283A JP9428381A JPS57207961A JP S57207961 A JPS57207961 A JP S57207961A JP 56094283 A JP56094283 A JP 56094283A JP 9428381 A JP9428381 A JP 9428381A JP S57207961 A JPS57207961 A JP S57207961A
Authority
JP
Japan
Prior art keywords
circuit
becomes
output
parity
parity check
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56094283A
Other languages
Japanese (ja)
Inventor
Katsumi Inasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56094283A priority Critical patent/JPS57207961A/en
Publication of JPS57207961A publication Critical patent/JPS57207961A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE:To prevent in advance occurrences of abnormalities in the unit, by performing parity checks of data on the whole addresses before the program execution processing is started or when the program execution processing is not performed. CONSTITUTION:When a power source circuit is turned on, a clear sinal generating circuit 4 is started for operation and a program counter 1 and FFs 5 and 6 are set to the reset condition. Then, a partity check is performed by a parity check circuit 3, and, when the result of the parity check is normal, a ''0'' is outputted and the output of an AND circuit 7 becomes ''0''. When an error is detected as the result of the parity check, the output of the circuit 7 becomes ''1'', the FF6 is set, and the output of an NAND gate 8 becomes ''0''. Moreover, the program counter 1 is stopped and an address where the erroneous data are stored is displayed.
JP56094283A 1981-06-18 1981-06-18 Parity diagnosing system Pending JPS57207961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56094283A JPS57207961A (en) 1981-06-18 1981-06-18 Parity diagnosing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56094283A JPS57207961A (en) 1981-06-18 1981-06-18 Parity diagnosing system

Publications (1)

Publication Number Publication Date
JPS57207961A true JPS57207961A (en) 1982-12-20

Family

ID=14105924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56094283A Pending JPS57207961A (en) 1981-06-18 1981-06-18 Parity diagnosing system

Country Status (1)

Country Link
JP (1) JPS57207961A (en)

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