JPS57111644A - Magnetic disc adapter - Google Patents
Magnetic disc adapterInfo
- Publication number
- JPS57111644A JPS57111644A JP18532580A JP18532580A JPS57111644A JP S57111644 A JPS57111644 A JP S57111644A JP 18532580 A JP18532580 A JP 18532580A JP 18532580 A JP18532580 A JP 18532580A JP S57111644 A JPS57111644 A JP S57111644A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disc
- read
- write
- control
- disc device
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
- G06F13/18—Handling requests for interconnection or transfer for access to memory bus based on priority control
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To perform read/write control with one route perform seek control with the other route by providing respectively two systems of mutually independent routes for a upper priority control device and a lower psiority magnetic disc device. CONSTITUTION:While read/write control is executed for a magnetic disc device from an upper priority control device #ADKC of a system A, a #A connecting part 6A, a tag conversion circuit 7A, a read/write control system 4 and a #A drive interface 8A are merely occupied, and during this time, it is possible to perform seek control from the upper priority control device #BDKC of, for example, a system B to the magnetic disc device. However, when the #BDKC of the system B emits a read/write command for a magnetic disc device 1-1, the system 4 is occupied and therefore, the # connecting part 6B returns said read/write busy signal and is kept standing by.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18532580A JPS57111644A (en) | 1980-12-29 | 1980-12-29 | Magnetic disc adapter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18532580A JPS57111644A (en) | 1980-12-29 | 1980-12-29 | Magnetic disc adapter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57111644A true JPS57111644A (en) | 1982-07-12 |
Family
ID=16168847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18532580A Pending JPS57111644A (en) | 1980-12-29 | 1980-12-29 | Magnetic disc adapter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57111644A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211938A (en) * | 1982-06-03 | 1983-12-09 | Nissan Motor Co Ltd | Side guard mold installation structure for car |
JPS60179863A (en) * | 1984-02-27 | 1985-09-13 | Fujitsu Ltd | Retry control method of input/output system |
JPS6284330A (en) * | 1985-10-09 | 1987-04-17 | Mitsubishi Electric Corp | Disk controller |
-
1980
- 1980-12-29 JP JP18532580A patent/JPS57111644A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211938A (en) * | 1982-06-03 | 1983-12-09 | Nissan Motor Co Ltd | Side guard mold installation structure for car |
JPH0154216B2 (en) * | 1982-06-03 | 1989-11-17 | Nissan Motor | |
JPS60179863A (en) * | 1984-02-27 | 1985-09-13 | Fujitsu Ltd | Retry control method of input/output system |
JPH0115088B2 (en) * | 1984-02-27 | 1989-03-15 | Fujitsu Ltd | |
JPS6284330A (en) * | 1985-10-09 | 1987-04-17 | Mitsubishi Electric Corp | Disk controller |
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