JPS5730183A - Magnetic bubble memory control system - Google Patents

Magnetic bubble memory control system

Info

Publication number
JPS5730183A
JPS5730183A JP10328080A JP10328080A JPS5730183A JP S5730183 A JPS5730183 A JP S5730183A JP 10328080 A JP10328080 A JP 10328080A JP 10328080 A JP10328080 A JP 10328080A JP S5730183 A JPS5730183 A JP S5730183A
Authority
JP
Japan
Prior art keywords
loop
position information
reference position
minor
defective
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
JP10328080A
Other languages
Japanese (ja)
Inventor
Masahiro Baba
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP10328080A priority Critical patent/JPS5730183A/en
Publication of JPS5730183A publication Critical patent/JPS5730183A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/86—Masking faults in memories by using spares or by reconfiguring in serial access memories, e.g. shift registers, CCDs, bubble memories

Abstract

PURPOSE:To improve the performance of relieving an element having a defective loop, by using an adjacent perfect loop as a reference position information storage loop when the reference position information storage loop is defective. CONSTITUTION:When the 1st minor loop 31 is defective and the 2nd minor loop 20' is perfect, the 2nd loop substitutes a reference position information loop automatically. Then, a 0 is stored in the area of an ROM correspondig to the minor loop 31 and although the minor loop 20' substituting the reference position information storage loop is perfect, a 0 is also stored in the area of the ROM corresponding to it. In the area of the ROM corresponding to another perfect minor loop 20, a 1 is stored. Thus, defective loop processing is carried out in normal operation to store reference position information without using the minor loop 20'.
JP10328080A 1980-07-28 1980-07-28 Magnetic bubble memory control system Pending JPS5730183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10328080A JPS5730183A (en) 1980-07-28 1980-07-28 Magnetic bubble memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10328080A JPS5730183A (en) 1980-07-28 1980-07-28 Magnetic bubble memory control system

Publications (1)

Publication Number Publication Date
JPS5730183A true JPS5730183A (en) 1982-02-18

Family

ID=14349927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10328080A Pending JPS5730183A (en) 1980-07-28 1980-07-28 Magnetic bubble memory control system

Country Status (1)

Country Link
JP (1) JPS5730183A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557597U (en) * 1992-01-14 1993-07-30 東亜高級継手バルブ製造株式会社 Corrosion resistant material for cast iron pipe ends

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557597U (en) * 1992-01-14 1993-07-30 東亜高級継手バルブ製造株式会社 Corrosion resistant material for cast iron pipe ends

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