JPS55112663A - File control unit - Google Patents
File control unitInfo
- Publication number
- JPS55112663A JPS55112663A JP1967379A JP1967379A JPS55112663A JP S55112663 A JPS55112663 A JP S55112663A JP 1967379 A JP1967379 A JP 1967379A JP 1967379 A JP1967379 A JP 1967379A JP S55112663 A JPS55112663 A JP S55112663A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- sector address
- lowering
- processor
- memories
- 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 avoid in lowering the entire throughput for the system, by coincident detection between the sector address on the rotary memory unit designated from the processor with the sector address read out from the rotary memory unit.
CONSTITUTION: In the data transfer between the processor 100 and the rotary magnetic memory unit 200 having the sector format of the fixed length, the sector address on the unit 200 designated from the processor 100 and the sector address read out from the unit 200 are compared for coincidence detection. Further, after designating the data write-in or readout to the buffer memories 5 and 6 and the confirmation of all the data accessed on the memories 5 and 6, if address coincidence detection is present, the data transfer is controlled between the units 100 and 200 via the memories 5 and 6 in response to the access mode designation output. Thus, if data transfer is disable due to lowering in the data processing ability of the unit 100, the lowering in the throughput of the entire system can be avoided.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1967379A JPS55112663A (en) | 1979-02-23 | 1979-02-23 | File control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1967379A JPS55112663A (en) | 1979-02-23 | 1979-02-23 | File control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112663A true JPS55112663A (en) | 1980-08-30 |
Family
ID=12005749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1967379A Pending JPS55112663A (en) | 1979-02-23 | 1979-02-23 | File control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112663A (en) |
-
1979
- 1979-02-23 JP JP1967379A patent/JPS55112663A/en active Pending
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