JPS6448152A - Memory write protection system - Google Patents

Memory write protection system

Info

Publication number
JPS6448152A
JPS6448152A JP62205430A JP20543087A JPS6448152A JP S6448152 A JPS6448152 A JP S6448152A JP 62205430 A JP62205430 A JP 62205430A JP 20543087 A JP20543087 A JP 20543087A JP S6448152 A JPS6448152 A JP S6448152A
Authority
JP
Japan
Prior art keywords
storage device
address
current system
stand
write
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
JP62205430A
Other languages
Japanese (ja)
Inventor
Takashi Hatano
Takashi Nara
Sumie Morita
Yutaka Kawato
Miharu Kato
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 JP62205430A priority Critical patent/JPS6448152A/en
Publication of JPS6448152A publication Critical patent/JPS6448152A/en
Pending legal-status Critical Current

Links

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  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To prevent the abnormal state of a storage device of the current system from having an influence upon a storage device of the stand-by system by inhibiting the write to an address, which corresponds to the address from which abnormal data is read of the storage device of the current system, of the storage device of the stand-by system by a central processing unit of the current system. CONSTITUTION:An abnormality address storage means 200, a comparing means 300, and an inhibiting means 400 are provided, and the address of a storage device 2-0 from which data is read out is stored in the means 200 if error is detected in this data read from the storage device 2-0 of the current system by a check means 100, and the means 300 compares the write address, which a central processing unit 1-0 of the current system outputs for the purpose of writing the same data in storage devices of the current system and the stand-by system, with the address stored in the abnormality address storage means 200, and the means 400 inhibits the write to the storage device 2-1 of the stand-by system at the time of detecting coincidence between both addresses. Thus, the write to the address from which abnormal data is read of the storage device of the current system is inhibited to prevent abnormal data from being written in the storage device of the stand-by system.
JP62205430A 1987-08-19 1987-08-19 Memory write protection system Pending JPS6448152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205430A JPS6448152A (en) 1987-08-19 1987-08-19 Memory write protection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205430A JPS6448152A (en) 1987-08-19 1987-08-19 Memory write protection system

Publications (1)

Publication Number Publication Date
JPS6448152A true JPS6448152A (en) 1989-02-22

Family

ID=16506728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205430A Pending JPS6448152A (en) 1987-08-19 1987-08-19 Memory write protection system

Country Status (1)

Country Link
JP (1) JPS6448152A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683717A (en) * 1992-02-14 1994-03-25 Internatl Business Mach Corp <Ibm> Large fault-resistant nonvolatile plural port memories
JP2008049252A (en) * 2006-08-24 2008-03-06 Daikin Ind Ltd Air conditioner
US8391585B2 (en) 2006-12-28 2013-03-05 Sharp Kabushiki Kaisha Defect detecting device, defect detecting method, image sensor device, image sensor module, defect detecting program, and computer-readable recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683717A (en) * 1992-02-14 1994-03-25 Internatl Business Mach Corp <Ibm> Large fault-resistant nonvolatile plural port memories
JP2008049252A (en) * 2006-08-24 2008-03-06 Daikin Ind Ltd Air conditioner
US8391585B2 (en) 2006-12-28 2013-03-05 Sharp Kabushiki Kaisha Defect detecting device, defect detecting method, image sensor device, image sensor module, defect detecting program, and computer-readable recording medium

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