JPS57162186A - Patrol controlling system of main memory - Google Patents

Patrol controlling system of main memory

Info

Publication number
JPS57162186A
JPS57162186A JP56044845A JP4484581A JPS57162186A JP S57162186 A JPS57162186 A JP S57162186A JP 56044845 A JP56044845 A JP 56044845A JP 4484581 A JP4484581 A JP 4484581A JP S57162186 A JPS57162186 A JP S57162186A
Authority
JP
Japan
Prior art keywords
main memory
circuit
patrol
register
address
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.)
Granted
Application number
JP56044845A
Other languages
Japanese (ja)
Other versions
JPS6131497B2 (en
Inventor
Takashi Chiba
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 JP56044845A priority Critical patent/JPS57162186A/en
Publication of JPS57162186A publication Critical patent/JPS57162186A/en
Publication of JPS6131497B2 publication Critical patent/JPS6131497B2/ja
Granted 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)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To control patrol operation with simple configuration without separation from the normal operation of a main memory by executing error correction and storing the corrected data in the memory when the main memory is accessed by a normal fetch mode. CONSTITUTION:When an access request is selected by a priority circuit 5, a pipe line 3 is started. At a fetch mode, address information is sent to a main memory 1 through an address checking circuit 6 and a register 7 and the fetched data are set to a register 10 and inputted to an ECC circuit 2. When an error is detected in the ECC circuit 2, the corrected data are sent to a patrol requesting part and a failing storage address on the pipeline 3 is set up in a failing storage address register 11. The patrol requesting part 14 inputs the set address again in the circuit 5 inorder to execute the patrol processing and the pipeline 3 is started by gioing the highest priority to the access processing. When the circuit 2 detectes another error again, the error is corrected and the corrected data is stored in the main memory 1 through a register 8.
JP56044845A 1981-03-27 1981-03-27 Patrol controlling system of main memory Granted JPS57162186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56044845A JPS57162186A (en) 1981-03-27 1981-03-27 Patrol controlling system of main memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56044845A JPS57162186A (en) 1981-03-27 1981-03-27 Patrol controlling system of main memory

Publications (2)

Publication Number Publication Date
JPS57162186A true JPS57162186A (en) 1982-10-05
JPS6131497B2 JPS6131497B2 (en) 1986-07-21

Family

ID=12702806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56044845A Granted JPS57162186A (en) 1981-03-27 1981-03-27 Patrol controlling system of main memory

Country Status (1)

Country Link
JP (1) JPS57162186A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141743A2 (en) * 1983-11-07 1985-05-15 Digital Equipment Corporation Pipeline error correction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141743A2 (en) * 1983-11-07 1985-05-15 Digital Equipment Corporation Pipeline error correction

Also Published As

Publication number Publication date
JPS6131497B2 (en) 1986-07-21

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