JPS57123461A - Error checking system - Google Patents

Error checking system

Info

Publication number
JPS57123461A
JPS57123461A JP56009031A JP903181A JPS57123461A JP S57123461 A JPS57123461 A JP S57123461A JP 56009031 A JP56009031 A JP 56009031A JP 903181 A JP903181 A JP 903181A JP S57123461 A JPS57123461 A JP S57123461A
Authority
JP
Japan
Prior art keywords
circuit
error
register
error check
signal
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
JP56009031A
Other languages
Japanese (ja)
Other versions
JPS6321928B2 (en
Inventor
Noriaki Hashimoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56009031A priority Critical patent/JPS57123461A/en
Publication of JPS57123461A publication Critical patent/JPS57123461A/en
Publication of JPS6321928B2 publication Critical patent/JPS6321928B2/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

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 decrease the number of error check circuits and error latch circuits, by selectively supplying plural register outputs to be a subject of error check to a common error check circuit and latching the error check results by a common latch circuit. CONSTITUTION:With the generation of a destination designating signal DES equal to an A-P signal, a selector circuit 35 selects the output of an A register 31 and supplies it to a parity check circuit 36. Then an error check timing signal Ti-P is produced, and accordingly the output of the circuit 36 is supplied to an error latch circuit 37 via an AND gate 39. Thus the parity check result of the register 31 is latched. The output signals ERi-P and ERj-P of the latch circuits 37 and 38 are supplied to a freezing control circuit 24. With the generation of either signal ERi-P or ERj-P, the circuit 24 preserves the contents of a data register 22. Thus it is possible to analyze the error factor due to a service processor 26.
JP56009031A 1981-01-26 1981-01-26 Error checking system Granted JPS57123461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56009031A JPS57123461A (en) 1981-01-26 1981-01-26 Error checking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56009031A JPS57123461A (en) 1981-01-26 1981-01-26 Error checking system

Publications (2)

Publication Number Publication Date
JPS57123461A true JPS57123461A (en) 1982-07-31
JPS6321928B2 JPS6321928B2 (en) 1988-05-10

Family

ID=11709278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56009031A Granted JPS57123461A (en) 1981-01-26 1981-01-26 Error checking system

Country Status (1)

Country Link
JP (1) JPS57123461A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109154A (en) * 1984-11-01 1986-05-27 Fujitsu Ltd Error detecting system for fixed data register
JPS6332637A (en) * 1986-07-26 1988-02-12 Nec Corp Information processing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109154A (en) * 1984-11-01 1986-05-27 Fujitsu Ltd Error detecting system for fixed data register
JPS6332637A (en) * 1986-07-26 1988-02-12 Nec Corp Information processing system

Also Published As

Publication number Publication date
JPS6321928B2 (en) 1988-05-10

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