JPS55108064A - Interface check system - Google Patents

Interface check system

Info

Publication number
JPS55108064A
JPS55108064A JP1535079A JP1535079A JPS55108064A JP S55108064 A JPS55108064 A JP S55108064A JP 1535079 A JP1535079 A JP 1535079A JP 1535079 A JP1535079 A JP 1535079A JP S55108064 A JPS55108064 A JP S55108064A
Authority
JP
Japan
Prior art keywords
error
check
circuit
bit
stored data
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
JP1535079A
Other languages
Japanese (ja)
Inventor
Takashi Ide
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 JP1535079A priority Critical patent/JPS55108064A/en
Publication of JPS55108064A publication Critical patent/JPS55108064A/en
Pending legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE: To increase the maintainability through the defective parts, by detecting the error in the stored data due to interface failure through the use of error check correction and producing circuit.
CONSTITUTION: The main memory control unit 2 has the error check, correction ECC check bit generating circuit 4, the check bit is produced at this production circuit at the storage operation to the main memory unit 1, check bit is added to the stored data and transferred to the margin circuit 8. Further, after setting it to the stored data register 6 via the circuit 8, the selection circuit 7 selects the ECC check correction to check the error in single or multiplex bit. When the error in multiplex bit due to failure in the interface is detected, the stored data in error is collected, faulty location is retrieved, and when single bit error is detected, the circuit 4 corrects the data, and it is stored 6 with the check code added. Thus, defective parts are sectioned to increase the maintainability.
COPYRIGHT: (C)1980,JPO&Japio
JP1535079A 1979-02-13 1979-02-13 Interface check system Pending JPS55108064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1535079A JPS55108064A (en) 1979-02-13 1979-02-13 Interface check system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1535079A JPS55108064A (en) 1979-02-13 1979-02-13 Interface check system

Publications (1)

Publication Number Publication Date
JPS55108064A true JPS55108064A (en) 1980-08-19

Family

ID=11886340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1535079A Pending JPS55108064A (en) 1979-02-13 1979-02-13 Interface check system

Country Status (1)

Country Link
JP (1) JPS55108064A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007197035A (en) * 2006-01-25 2007-08-09 Tf Kasei Kk Anti-cracking cover
US7676702B2 (en) 2006-08-14 2010-03-09 International Business Machines Corporation Preemptive data protection for copy services in storage systems and applications
US7779308B2 (en) 2007-06-21 2010-08-17 International Business Machines Corporation Error processing across multiple initiator network
US7882393B2 (en) 2007-03-28 2011-02-01 International Business Machines Corporation In-band problem log data collection between a host system and a storage system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007197035A (en) * 2006-01-25 2007-08-09 Tf Kasei Kk Anti-cracking cover
US7676702B2 (en) 2006-08-14 2010-03-09 International Business Machines Corporation Preemptive data protection for copy services in storage systems and applications
US7882393B2 (en) 2007-03-28 2011-02-01 International Business Machines Corporation In-band problem log data collection between a host system and a storage system
US7779308B2 (en) 2007-06-21 2010-08-17 International Business Machines Corporation Error processing across multiple initiator network

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