JPS5493339A - Priority control system - Google Patents
Priority control systemInfo
- Publication number
- JPS5493339A JPS5493339A JP15841377A JP15841377A JPS5493339A JP S5493339 A JPS5493339 A JP S5493339A JP 15841377 A JP15841377 A JP 15841377A JP 15841377 A JP15841377 A JP 15841377A JP S5493339 A JPS5493339 A JP S5493339A
- Authority
- JP
- Japan
- Prior art keywords
- processing
- individual sections
- processing request
- request
- priority
- 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
- Small-Scale Networks (AREA)
- Communication Control (AREA)
- Bus Control (AREA)
- Computer And Data Communications (AREA)
Abstract
PURPOSE: To completely perform the processing to the line within the range of processing ability, by providing the processing request reception control section possible for the switching of priority and by providing the common processor commonly processing a plurality of individual sections and the processing request causing processing request.
CONSTITUTION: A plurality of individual sections P1 to Pn producing the processing request and the common processing section CPU commonly processing the request from the individual sections P1 to Pn are provided. They are mutually connected via OR gate. One of the individual sections P1 to Pn of the same priority levels is selected and the processing request is controlled by transferring it to the unit CPU, and the processing request reception control section S providing the selection means Z switching the priority level in selecting the individual sections P1 to Pn is provided. With this constitution, each of the individual sections P1 to Pn is provided with FFB memorizing the priority level of processing request and the gate circuits AG1 to AG2 and OR gates inputting the signal of FFB and the control section S, and the processing is commpletely be made in the order of priority according to the range of the processing ability of CPU.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15841377A JPS5493339A (en) | 1977-12-30 | 1977-12-30 | Priority control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15841377A JPS5493339A (en) | 1977-12-30 | 1977-12-30 | Priority control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5493339A true JPS5493339A (en) | 1979-07-24 |
JPS5721729B2 JPS5721729B2 (en) | 1982-05-10 |
Family
ID=15671206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15841377A Granted JPS5493339A (en) | 1977-12-30 | 1977-12-30 | Priority control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5493339A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5787647A (en) * | 1980-11-20 | 1982-06-01 | Ricoh Co Ltd | Data communication system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50156849A (en) * | 1974-06-06 | 1975-12-18 | ||
JPS50156848A (en) * | 1974-06-06 | 1975-12-18 | ||
JPS53124939A (en) * | 1977-04-08 | 1978-10-31 | Agency Of Ind Science & Technol | Request selection system |
JPS5441635A (en) * | 1977-09-09 | 1979-04-03 | Hitachi Ltd | Input and output control unit having priority processing mode |
-
1977
- 1977-12-30 JP JP15841377A patent/JPS5493339A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50156849A (en) * | 1974-06-06 | 1975-12-18 | ||
JPS50156848A (en) * | 1974-06-06 | 1975-12-18 | ||
JPS53124939A (en) * | 1977-04-08 | 1978-10-31 | Agency Of Ind Science & Technol | Request selection system |
JPS5441635A (en) * | 1977-09-09 | 1979-04-03 | Hitachi Ltd | Input and output control unit having priority processing mode |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5787647A (en) * | 1980-11-20 | 1982-06-01 | Ricoh Co Ltd | Data communication system |
JPS6367379B2 (en) * | 1980-11-20 | 1988-12-26 | Ricoh Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS5721729B2 (en) | 1982-05-10 |
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