JPS5588118A - Buffer read system - Google Patents
Buffer read systemInfo
- Publication number
- JPS5588118A JPS5588118A JP16228478A JP16228478A JPS5588118A JP S5588118 A JPS5588118 A JP S5588118A JP 16228478 A JP16228478 A JP 16228478A JP 16228478 A JP16228478 A JP 16228478A JP S5588118 A JPS5588118 A JP S5588118A
- Authority
- JP
- Japan
- Prior art keywords
- information
- pointer
- buffer
- controller
- pos
- 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
Landscapes
- Information Transfer Systems (AREA)
- Computer And Data Communications (AREA)
Abstract
PURPOSE: To remove or reduce a fruitless processing load on a central controller by reading information from a terminal by scanning on a buffer memory at the irreducible minimum of demand.
CONSTITUTION: Information generated by switchboards POS#0...POS#n at rondom is stored in buffer memory BM and coincidence detection circuit C generates an output on detecting a coincidence between addresses that load pointer LP and unload pointer UP indicate respectively. Then, information generating circuit FPG operates by the output of circuit C to generate buffer empty information, and scans sequentially by the scan command of central controller CC from the address which pointer UP indicates to that of memory BM to send the contents back to controller CC, and until controller CC receives the buffer-empty information, scan commands are sent out in sequence. Consequenctly, a fruitless processing load on the unit can be reduced or eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16228478A JPS5588118A (en) | 1978-12-27 | 1978-12-27 | Buffer read system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16228478A JPS5588118A (en) | 1978-12-27 | 1978-12-27 | Buffer read system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5588118A true JPS5588118A (en) | 1980-07-03 |
Family
ID=15751549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16228478A Pending JPS5588118A (en) | 1978-12-27 | 1978-12-27 | Buffer read system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5588118A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195657A (en) * | 1984-03-16 | 1985-10-04 | Hitachi Micro Comput Eng Ltd | Data processing system |
-
1978
- 1978-12-27 JP JP16228478A patent/JPS5588118A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195657A (en) * | 1984-03-16 | 1985-10-04 | Hitachi Micro Comput Eng Ltd | Data processing system |
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