JPS5532261A - Memory control system - Google Patents

Memory control system

Info

Publication number
JPS5532261A
JPS5532261A JP10441578A JP10441578A JPS5532261A JP S5532261 A JPS5532261 A JP S5532261A JP 10441578 A JP10441578 A JP 10441578A JP 10441578 A JP10441578 A JP 10441578A JP S5532261 A JPS5532261 A JP S5532261A
Authority
JP
Japan
Prior art keywords
minor
constitution
read
magnetic bubble
external auxiliary
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
JP10441578A
Other languages
Japanese (ja)
Inventor
Akira Takayama
Kazuo Furukawa
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 JP10441578A priority Critical patent/JPS5532261A/en
Publication of JPS5532261A publication Critical patent/JPS5532261A/en
Pending legal-status Critical Current

Links

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  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To simplify the constitution of a memory unit by controlling a magnetic bubble unit corresponding to the read of RAM by writing defective information stored in an external auxiliary memory to RAM.
CONSTITUTION: Defective loop information of a minor loop formed of magnetic bubble units 5... of external auxiliary memory 12 is read via control part 8 and external auxiliary memory interface 11 and written in RAM10. Data array circuit 7 selects minor loops without defect of units 5... according to the read of the defective information written in RAM10 and the information data are transferred between major loops and minor loops. In this system, the need to provide ROM for defect minor loop to each magnetic bubble unit can be eliminated and control of a LSI memory can be done by a simple constitution.
COPYRIGHT: (C)1980,JPO&Japio
JP10441578A 1978-08-29 1978-08-29 Memory control system Pending JPS5532261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10441578A JPS5532261A (en) 1978-08-29 1978-08-29 Memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10441578A JPS5532261A (en) 1978-08-29 1978-08-29 Memory control system

Publications (1)

Publication Number Publication Date
JPS5532261A true JPS5532261A (en) 1980-03-06

Family

ID=14380050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10441578A Pending JPS5532261A (en) 1978-08-29 1978-08-29 Memory control system

Country Status (1)

Country Link
JP (1) JPS5532261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233492A (en) * 1985-04-09 1986-10-17 Fujitsu Ltd Magnetic bubble storage device
JPS6282593A (en) * 1985-10-05 1987-04-16 Tech Res & Dev Inst Of Japan Def Agency Bubble file memory device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233492A (en) * 1985-04-09 1986-10-17 Fujitsu Ltd Magnetic bubble storage device
JPH0217868B2 (en) * 1985-04-09 1990-04-23 Fujitsu Ltd
JPS6282593A (en) * 1985-10-05 1987-04-16 Tech Res & Dev Inst Of Japan Def Agency Bubble file memory device

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