JPS559283A - Interface circuit system for floppy disc for microcomputer - Google Patents
Interface circuit system for floppy disc for microcomputerInfo
- Publication number
- JPS559283A JPS559283A JP8226778A JP8226778A JPS559283A JP S559283 A JPS559283 A JP S559283A JP 8226778 A JP8226778 A JP 8226778A JP 8226778 A JP8226778 A JP 8226778A JP S559283 A JPS559283 A JP S559283A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- flag
- data
- selector
- floppy disc
- 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 simplify the connection, by transferring the program of microcomputer continuoulsy in high speed without using the direct memory access controller and interruption processing circuit for the data in continuous selector.
CONSTITUTION: The parallel data from the CPU bus 4 is converted into serial data, and the serial data from the floppy driver interface circuit 1 into parallel data, the floppy disc control circuit 5 controlling the read/write head of the circuit 1 is provided, and the floppy disc interface circuit 3 performing program transfer through the use of the data transfer timing flag obtained from the circuit 5 is provided. The flag is counted with the counter 10 of the circuit 3, the selector flag is outputted by the count of one selector's share, the OR circuit 12 takes logical sum of flag of the counter 10 and the conditional flag from the circuit 5, the output of the circuit 12 is fed to CPU 1 to perform data transfer continuously to the computer in high speed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8226778A JPS559283A (en) | 1978-07-06 | 1978-07-06 | Interface circuit system for floppy disc for microcomputer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8226778A JPS559283A (en) | 1978-07-06 | 1978-07-06 | Interface circuit system for floppy disc for microcomputer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS559283A true JPS559283A (en) | 1980-01-23 |
Family
ID=13769697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8226778A Pending JPS559283A (en) | 1978-07-06 | 1978-07-06 | Interface circuit system for floppy disc for microcomputer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559283A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57103568A (en) * | 1980-12-19 | 1982-06-28 | Nec Corp | Input/output controller |
JPS5833770A (en) * | 1981-08-24 | 1983-02-28 | Sony Corp | Program transfer method for digital data |
JPS603048A (en) * | 1983-06-20 | 1985-01-09 | Matsushita Electric Ind Co Ltd | Data transfer controller |
JPS63257601A (en) * | 1987-04-16 | 1988-10-25 | 北川精機株式会社 | Slice veneer bonder |
-
1978
- 1978-07-06 JP JP8226778A patent/JPS559283A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57103568A (en) * | 1980-12-19 | 1982-06-28 | Nec Corp | Input/output controller |
JPS5833770A (en) * | 1981-08-24 | 1983-02-28 | Sony Corp | Program transfer method for digital data |
JPH0429102B2 (en) * | 1981-08-24 | 1992-05-18 | ||
JPS603048A (en) * | 1983-06-20 | 1985-01-09 | Matsushita Electric Ind Co Ltd | Data transfer controller |
JPS63257601A (en) * | 1987-04-16 | 1988-10-25 | 北川精機株式会社 | Slice veneer bonder |
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