JPS5538621A - Magnetic disc unit - Google Patents
Magnetic disc unitInfo
- Publication number
- JPS5538621A JPS5538621A JP10930578A JP10930578A JPS5538621A JP S5538621 A JPS5538621 A JP S5538621A JP 10930578 A JP10930578 A JP 10930578A JP 10930578 A JP10930578 A JP 10930578A JP S5538621 A JPS5538621 A JP S5538621A
- Authority
- JP
- Japan
- Prior art keywords
- head
- track
- circuit
- register
- held
- 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
Links
Abstract
PURPOSE: To eliminate burdens upon a control system and software by equalizing a cartridge disc side and fixed disc side in terms of the number of tracks by viewing from the control system.
CONSTITUTION: At a cartridge side, externally-assigned track and head addresses are held by registers 21 and 22 and supplied to arm 11 to select head 5 and 6. At a fixed disc side, on the other hand, a track address, held by register 23, is transferred to converter circuit 25, where a virtual track address is converted into a physical track address and supplied to positioning arm 12. Further, a head address, held by register 24, is transferred to head selector circuit 26. Addresses from circuit 25 and register 24 are decoded by circuit 26 to select fixed heads from heads 7W10. Here, when one head at the cartridge side is considered to have the N-number tracks and that at the fixed-disc side to have a 1/N head, the maximun track munbers and maximum head number assigned externally are N at the track side and two at the head side respectively.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10930578A JPS6043579B2 (en) | 1978-09-06 | 1978-09-06 | magnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10930578A JPS6043579B2 (en) | 1978-09-06 | 1978-09-06 | magnetic disk device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5538621A true JPS5538621A (en) | 1980-03-18 |
JPS6043579B2 JPS6043579B2 (en) | 1985-09-28 |
Family
ID=14506818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10930578A Expired JPS6043579B2 (en) | 1978-09-06 | 1978-09-06 | magnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6043579B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6057427A (en) * | 1983-09-09 | 1985-04-03 | Toshiba Corp | Control circuit of information recording and reproducing device |
US4563715A (en) * | 1982-01-22 | 1986-01-07 | Canon Denshi Kabushiki Kaisha | Head position control device |
-
1978
- 1978-09-06 JP JP10930578A patent/JPS6043579B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4563715A (en) * | 1982-01-22 | 1986-01-07 | Canon Denshi Kabushiki Kaisha | Head position control device |
JPS6057427A (en) * | 1983-09-09 | 1985-04-03 | Toshiba Corp | Control circuit of information recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS6043579B2 (en) | 1985-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57189376A (en) | Magnetic disc device | |
JPS52119832A (en) | Electroinc calculator of microprogram control system | |
JPS55153058A (en) | Sector file control system | |
JPS546417A (en) | Magnetic recorder-regenerator | |
JPS5538621A (en) | Magnetic disc unit | |
JPS5543681A (en) | Floppy disk control system | |
JPS51138335A (en) | Control system for control memory | |
JPS5390838A (en) | Microprogram memory unit | |
JPS5392638A (en) | Information processing unit | |
JPS53142137A (en) | Memory control unit | |
JPS5436144A (en) | Address conversion unit | |
JPS52149038A (en) | Interface system | |
JPS5211730A (en) | Information processing unit | |
JPS5339032A (en) | Branch control system | |
JPS51114040A (en) | A micro-program writing system | |
JPS5211729A (en) | Information processing unit | |
JPS5374332A (en) | Microprogram control unit | |
JPS5578365A (en) | Memory control unit | |
JPS52150944A (en) | Information transfer control unit | |
JPS51142939A (en) | Data processor | |
JPS53148250A (en) | Interruption control system | |
JPS57100549A (en) | Magnetic disk subsystem | |
JPS5211835A (en) | Buffer register control system | |
JPS5374850A (en) | Magnetic disk control unit | |
JPS5423513A (en) | Magnetic disc controller |