JPS5569834A - Data transfer controller - Google Patents
Data transfer controllerInfo
- Publication number
- JPS5569834A JPS5569834A JP14235678A JP14235678A JPS5569834A JP S5569834 A JPS5569834 A JP S5569834A JP 14235678 A JP14235678 A JP 14235678A JP 14235678 A JP14235678 A JP 14235678A JP S5569834 A JPS5569834 A JP S5569834A
- Authority
- JP
- Japan
- Prior art keywords
- data
- inputted
- input
- output unit
- signal
- 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 increase a data processing speed by make it possible to transfer data without waiting for the data processing operation of an input-output unit when a data transfer mode is set.
CONSTITUTION: A data transfer mode start instruction from a computer is inputted to decoder 14 of controller 2, and consequently start instruction signal 41 is outputted to set FF50. On the other hand, strobe signal 31 from the computer is inputted to set FF51 and in-process display signal 39 is outputted to an input-output unit. Next, the mentioned-above unit generates response signal 36 to reset FFs 50 and 51. Then, a write instruction is inputted to decoder 14 to set FFs 50 and 51 again. On the basis of data request signal 40, data is inputted through data bus 33, sent to buffer register 18, and then transferred to buffer register 25 of controller 4 before being inputted to the input-output unit. Once the input-output unit completes data processing, process end signal 36 is generated to reset FFs 51 and 50. In this way, an interface ready mode is set between the computer and input-output unit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14235678A JPS5569834A (en) | 1978-11-20 | 1978-11-20 | Data transfer controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14235678A JPS5569834A (en) | 1978-11-20 | 1978-11-20 | Data transfer controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569834A true JPS5569834A (en) | 1980-05-26 |
Family
ID=15313463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14235678A Pending JPS5569834A (en) | 1978-11-20 | 1978-11-20 | Data transfer controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569834A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006334181A (en) * | 2005-06-03 | 2006-12-14 | Sanyo Electric Co Ltd | Waterproof shaver with built-in sound generation means |
-
1978
- 1978-11-20 JP JP14235678A patent/JPS5569834A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006334181A (en) * | 2005-06-03 | 2006-12-14 | Sanyo Electric Co Ltd | Waterproof shaver with built-in sound generation means |
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