JPS5727483A - Magnetic bubble storage device - Google Patents

Magnetic bubble storage device

Info

Publication number
JPS5727483A
JPS5727483A JP10122880A JP10122880A JPS5727483A JP S5727483 A JPS5727483 A JP S5727483A JP 10122880 A JP10122880 A JP 10122880A JP 10122880 A JP10122880 A JP 10122880A JP S5727483 A JPS5727483 A JP S5727483A
Authority
JP
Japan
Prior art keywords
defective
loop
readout
write
storage device
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.)
Granted
Application number
JP10122880A
Other languages
Japanese (ja)
Other versions
JPS634279B2 (en
Inventor
Shigeru Takai
Takenori Iida
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 JP10122880A priority Critical patent/JPS5727483A/en
Publication of JPS5727483A publication Critical patent/JPS5727483A/en
Publication of JPS634279B2 publication Critical patent/JPS634279B2/ja
Granted 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 reduce the unnecessary time at device switching, by providing RAMs storing bubble stop address to defective memories by the number of devices. CONSTITUTION:When the power supply is applied, initializing is made so that the head of bubbles are at specified position for each loop of magnetic memory devices D1-Dn. When an instruction comes to select the D2, for example, a control circuit 9 selects the designated device D2 and reads out the defective loop data from an RAM10. The access of readout or write-in of the device D2 is made while skipping defective loop, and the access time can be reduced. When this readout or write-in is finished, the bubble stop address of the device D2 is stored in a register L2.
JP10122880A 1980-07-25 1980-07-25 Magnetic bubble storage device Granted JPS5727483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10122880A JPS5727483A (en) 1980-07-25 1980-07-25 Magnetic bubble storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10122880A JPS5727483A (en) 1980-07-25 1980-07-25 Magnetic bubble storage device

Publications (2)

Publication Number Publication Date
JPS5727483A true JPS5727483A (en) 1982-02-13
JPS634279B2 JPS634279B2 (en) 1988-01-28

Family

ID=14295033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10122880A Granted JPS5727483A (en) 1980-07-25 1980-07-25 Magnetic bubble storage device

Country Status (1)

Country Link
JP (1) JPS5727483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511856A (en) * 1991-07-05 1993-01-22 Tokkyo Kiki Kk Feedforward control method for vibration isolation table

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0231091A (en) * 1988-07-19 1990-02-01 Kubota Ltd Joining device for low-rigidity pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525824A (en) * 1978-08-11 1980-02-23 Hitachi Ltd Magnetic bubble memory device
JPS5532274A (en) * 1978-08-30 1980-03-06 Hitachi Ltd Magnetic bubble memory unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525824A (en) * 1978-08-11 1980-02-23 Hitachi Ltd Magnetic bubble memory device
JPS5532274A (en) * 1978-08-30 1980-03-06 Hitachi Ltd Magnetic bubble memory unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511856A (en) * 1991-07-05 1993-01-22 Tokkyo Kiki Kk Feedforward control method for vibration isolation table

Also Published As

Publication number Publication date
JPS634279B2 (en) 1988-01-28

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