JPS5682938A - Data buffer control system - Google Patents
Data buffer control systemInfo
- Publication number
- JPS5682938A JPS5682938A JP15953079A JP15953079A JPS5682938A JP S5682938 A JPS5682938 A JP S5682938A JP 15953079 A JP15953079 A JP 15953079A JP 15953079 A JP15953079 A JP 15953079A JP S5682938 A JPS5682938 A JP S5682938A
- Authority
- JP
- Japan
- Prior art keywords
- data
- data buffer
- buffer area
- channel device
- transmitted
- 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
- Bus Control (AREA)
- Computer And Data Communications (AREA)
- Communication Control (AREA)
Abstract
PURPOSE: To improve the efficiency of utilization of a data buffer area in a data processing system having plural input-output adapters, by providing on a channel device a copy memory area wherein the contents of the data buffer area are copied.
CONSTITUTION: When central processor 1 transmits data to a terminal device via circuit control adapter 6-0, central processor 1 sets transmitted data 8 in data buffer area 7 in main memory device 2 and sends a send command to channel device 4. In response to the command, channel device 4 loads all transmitted data 8 or data buffer area 7 into copy memory area 11 and releases data buffer area 7. Data buffer area 7 can, therefore, be used for the storage of other data. Next, channel device 4 gives circuit control adapter 6-0 the indication of data transmission. Copied data 12 are loaded, byte by byte, and transmitted to the terminal device.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54159530A JPS6027427B2 (en) | 1979-12-07 | 1979-12-07 | Data buffer control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54159530A JPS6027427B2 (en) | 1979-12-07 | 1979-12-07 | Data buffer control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5682938A true JPS5682938A (en) | 1981-07-07 |
JPS6027427B2 JPS6027427B2 (en) | 1985-06-28 |
Family
ID=15695771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54159530A Expired JPS6027427B2 (en) | 1979-12-07 | 1979-12-07 | Data buffer control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6027427B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5949624A (en) * | 1982-09-15 | 1984-03-22 | Omron Tateisi Electronics Co | Data transfer device |
-
1979
- 1979-12-07 JP JP54159530A patent/JPS6027427B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5949624A (en) * | 1982-09-15 | 1984-03-22 | Omron Tateisi Electronics Co | Data transfer device |
Also Published As
Publication number | Publication date |
---|---|
JPS6027427B2 (en) | 1985-06-28 |
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