JPS5680878A - Magnetic bubble storage device - Google Patents
Magnetic bubble storage deviceInfo
- 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
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
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)
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 |
-
1979
- 1979-12-05 JP JP15766379A patent/JPS5680878A/en active Pending
Cited By (3)
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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