JPS5464437A - Data transfer control system - Google Patents
Data transfer control systemInfo
- Publication number
- JPS5464437A JPS5464437A JP13056077A JP13056077A JPS5464437A JP S5464437 A JPS5464437 A JP S5464437A JP 13056077 A JP13056077 A JP 13056077A JP 13056077 A JP13056077 A JP 13056077A JP S5464437 A JPS5464437 A JP S5464437A
- Authority
- JP
- Japan
- Prior art keywords
- buffer
- transmission data
- channel
- control system
- data transfer
- 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.)
- Granted
Links
Landscapes
- Computer And Data Communications (AREA)
- Communication Control (AREA)
- Information Transfer Systems (AREA)
Abstract
PURPOSE: To avoid unnecessary processing of line control channel at the application of power supply, by providing the conditional display means of the transmission data buffer to the line adaptor.
CONSTITUTION: The conditional display means 8 of the transmission data buffer 15 is provided in the line adaptor 3, and the line control channel 1, after confirming the vacancy of the buffer 15 with the output of the means 8, supplied transmission data to the buffer 15. Further, the means 8 uses flag bit which is set when data is written in the buffer 15 and reset with the interrupt reception signal from the channel 1, and delivers the interrupt signal to the channel 1 when the flag bit is set and the buffer 15 is vacant.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13056077A JPS5464437A (en) | 1977-10-31 | 1977-10-31 | Data transfer control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13056077A JPS5464437A (en) | 1977-10-31 | 1977-10-31 | Data transfer control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5464437A true JPS5464437A (en) | 1979-05-24 |
JPS5719459B2 JPS5719459B2 (en) | 1982-04-22 |
Family
ID=15037167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13056077A Granted JPS5464437A (en) | 1977-10-31 | 1977-10-31 | Data transfer control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5464437A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61271556A (en) * | 1985-05-28 | 1986-12-01 | Oki Electric Ind Co Ltd | Direct memory access system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51107733A (en) * | 1975-02-18 | 1976-09-24 | Motorola Inc | |
JPS5255451A (en) * | 1975-10-30 | 1977-05-06 | Motorola Inc | Digital device for synchronous data communication |
-
1977
- 1977-10-31 JP JP13056077A patent/JPS5464437A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51107733A (en) * | 1975-02-18 | 1976-09-24 | Motorola Inc | |
JPS5255451A (en) * | 1975-10-30 | 1977-05-06 | Motorola Inc | Digital device for synchronous data communication |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61271556A (en) * | 1985-05-28 | 1986-12-01 | Oki Electric Ind Co Ltd | Direct memory access system |
Also Published As
Publication number | Publication date |
---|---|
JPS5719459B2 (en) | 1982-04-22 |
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