JPS551630A - Processing system for defective loop of magnetic bubble memory - Google Patents

Processing system for defective loop of magnetic bubble memory

Info

Publication number
JPS551630A
JPS551630A JP7434578A JP7434578A JPS551630A JP S551630 A JPS551630 A JP S551630A JP 7434578 A JP7434578 A JP 7434578A JP 7434578 A JP7434578 A JP 7434578A JP S551630 A JPS551630 A JP S551630A
Authority
JP
Japan
Prior art keywords
magnetic bubble
bubble memory
defective loop
memory
mbm
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
JP7434578A
Other languages
Japanese (ja)
Inventor
Ryoji Imazeki
Michiya Inoue
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc 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 Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP7434578A priority Critical patent/JPS551630A/en
Publication of JPS551630A publication Critical patent/JPS551630A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To facilitate to make a magnetic bubble memory into a cassette by storing previously defective loop information in the magnetic bubble memory litself and taking out this defective loop information into a readable and writable memory when this magnetic bubble memory is used.
CONSTITUTION: Mganetic bubble memory MBM which is consitituted by major and minor loops and is made into a cassette and readable and writable memory MEM2 provided in the system side are equipped, and defective loop information is previously stored in magnetic bubble memory MBM itself. This stored defective loop information is read out before using magnetic bubble memory MBM and is written into memory MEM2 provided in the micro processor CPU side. Then, by reading out this information synchronously with magnetic bubble memory MBM, data write to the defective loop region can be inhibited, and data from the defective loop can be made invalid.
COPYRIGHT: (C)1980,JPO&Japio
JP7434578A 1978-06-20 1978-06-20 Processing system for defective loop of magnetic bubble memory Pending JPS551630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7434578A JPS551630A (en) 1978-06-20 1978-06-20 Processing system for defective loop of magnetic bubble memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7434578A JPS551630A (en) 1978-06-20 1978-06-20 Processing system for defective loop of magnetic bubble memory

Publications (1)

Publication Number Publication Date
JPS551630A true JPS551630A (en) 1980-01-08

Family

ID=13544429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7434578A Pending JPS551630A (en) 1978-06-20 1978-06-20 Processing system for defective loop of magnetic bubble memory

Country Status (1)

Country Link
JP (1) JPS551630A (en)

Cited By (1)

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

Cited By (1)

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

Similar Documents

Publication Publication Date Title
JPS551630A (en) Processing system for defective loop of magnetic bubble memory
JPS54109728A (en) Memory device
JPS5481049A (en) Data processing system
JPS5231626A (en) Magnetic bubble cassette memory
JPS5694572A (en) Drive method for magnetic bubble memory
JPS54128229A (en) Magnetic disk control unit containing data buffer
JPS54122059A (en) Inter-processor information transfer system
JPS55113185A (en) Magnetic bubble memory element
JPS563485A (en) Buffer memory device
JPS5469035A (en) Magnetic bubble cassette memory
JPS53106110A (en) Magnetic memory controller
JPS5453839A (en) Magnetic bubble memory
JPS5350813A (en) Information memory device
JPS5482135A (en) Test method for bubble memory
JPS5532261A (en) Memory control system
JPS5447446A (en) Magnetic disc control unit
JPS5644185A (en) Magnetic bubble memory device
JPS642155A (en) Write controlling method for external memory device
JPS5644187A (en) Write check system of bubble memory
JPS54122945A (en) Memory circuit
JPS642162A (en) Duplicated computer system
JPS53141518A (en) Storing system
JPS54154939A (en) Magnetic bubble memory unit
JPS5712469A (en) Buffer memory control system
JPS55150136A (en) Defective detector for magnetic card