JPS5680878A - Magnetic bubble storage device - Google Patents

Magnetic bubble storage device

Info

Publication number
JPS5680878A
JPS5680878A JP15766379A JP15766379A JPS5680878A JP S5680878 A JPS5680878 A JP S5680878A JP 15766379 A JP15766379 A JP 15766379A JP 15766379 A JP15766379 A JP 15766379A JP S5680878 A JPS5680878 A JP S5680878A
Authority
JP
Japan
Prior art keywords
bmn
bubble
block
transfer operation
address
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
JP15766379A
Other languages
Japanese (ja)
Inventor
Yoshifumi Sasamoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15766379A priority Critical patent/JPS5680878A/en
Publication of JPS5680878A publication Critical patent/JPS5680878A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten the average cycle time and enhance the throughput by carrying out one transfer action and a plurality of search operation or the like simultaneously and in parallel with each other with reference to a pluality of bubble memory blocks.
CONSTITUTION: Every time when the respective blocks BM0WBM3 of bubble memories BM are individually driven, the stop address to be renewed is stored every block BMn in the memory SAM. In addition the access address of the received access request is stored in the register group AR every block BMn. Then, every block BMn, the stop address is compared CMP with access address, and the compared result is fed to a bubble driving circuit. When the comparison is not coincided, the circuit DC drives the corresponding BMn for the search operation, and when being coincided in case the transfer operation of other BMn is performed, the driving of the corresponding BMn is stopped and when the transfer operation of other BMn is not carried out, the transfer operation of the corresponding BMn is carried out.
COPYRIGHT: (C)1981,JPO&Japio
JP15766379A 1979-12-05 1979-12-05 Magnetic bubble storage device Pending JPS5680878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15766379A JPS5680878A (en) 1979-12-05 1979-12-05 Magnetic bubble storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15766379A JPS5680878A (en) 1979-12-05 1979-12-05 Magnetic bubble storage device

Publications (1)

Publication Number Publication Date
JPS5680878A true JPS5680878A (en) 1981-07-02

Family

ID=15654651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15766379A Pending JPS5680878A (en) 1979-12-05 1979-12-05 Magnetic bubble storage device

Country Status (1)

Country Link
JP (1) JPS5680878A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480016A1 (en) * 1980-04-03 1981-10-09 Philips Nv DISC INFORMATION TRACK TRACKING DEVICE
JPS6061982A (en) * 1983-09-14 1985-04-09 Fujitsu Ltd Magnetic bubble memory

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480016A1 (en) * 1980-04-03 1981-10-09 Philips Nv DISC INFORMATION TRACK TRACKING DEVICE
JPS6061982A (en) * 1983-09-14 1985-04-09 Fujitsu Ltd Magnetic bubble memory
JPH0130239B2 (en) * 1983-09-14 1989-06-16 Fujitsu Ltd

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