JPS5652456A - Magnetic disk memory control system - Google Patents
Magnetic disk memory control systemInfo
- Publication number
- JPS5652456A JPS5652456A JP12677379A JP12677379A JPS5652456A JP S5652456 A JPS5652456 A JP S5652456A JP 12677379 A JP12677379 A JP 12677379A JP 12677379 A JP12677379 A JP 12677379A JP S5652456 A JPS5652456 A JP S5652456A
- Authority
- JP
- Japan
- Prior art keywords
- seek
- statement
- magnetic disk
- disk memory
- cylinder 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
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Abstract
PURPOSE: To realize an efficient data access by which the loss time for data access can be minimized, by executing the argorithm of a movable record reproducing head arm in accordance with a SEEK statement.
CONSTITUTION: In case two positions of the magnetic disk memory DKU3 can be used, the position side of a cylinder address which is nearest to the object cylinder address of a SEEK statement is selected. Also, in the data processing unit EDP1 side, in case the magnetic disk memory control unit DKC2 has received the SEEK statement, the position side which is unused is selected and the record reproducing head arm is activated so that it is located at a fixed cylinder address. When execution of the SEEK statement has been finished, DKC2 sends a report on release of its use to EDP1, and EDP1 sends a SEEK statement which has come to be used. At this time point, location to a fixed cylinder address is finished already.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12677379A JPS5652456A (en) | 1979-10-03 | 1979-10-03 | Magnetic disk memory control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12677379A JPS5652456A (en) | 1979-10-03 | 1979-10-03 | Magnetic disk memory control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5652456A true JPS5652456A (en) | 1981-05-11 |
Family
ID=14943565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12677379A Pending JPS5652456A (en) | 1979-10-03 | 1979-10-03 | Magnetic disk memory control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5652456A (en) |
-
1979
- 1979-10-03 JP JP12677379A patent/JPS5652456A/en active Pending
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