JPS55119724A - Priority selection circuit - Google Patents
Priority selection circuitInfo
- Publication number
- JPS55119724A JPS55119724A JP2666579A JP2666579A JPS55119724A JP S55119724 A JPS55119724 A JP S55119724A JP 2666579 A JP2666579 A JP 2666579A JP 2666579 A JP2666579 A JP 2666579A JP S55119724 A JPS55119724 A JP S55119724A
- Authority
- JP
- Japan
- Prior art keywords
- priority
- processing request
- circuit
- processing
- designation
- 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 enable quick and suitable processing to the processing request source taken place in case of failure, by processing the processing request source in response to the priority designation input with most priority when the priority designation input is present to the designation circuit.
CONSTITUTION: The priority circuit consisting of the FF1...4, counter 16, decoder 17, AND gates 18...21, outputs the processing request from a plurality of processing request sources with fixed processing priority sequence. Further, the priority designation circuit 36 can designate one of the processing requests independently of the priority and the priority alteration circuit 22 selects the processing request from the processing request source in response to the designatiok output from this designation circuit with priority. When priority designation input is present to the circuit 36, the processing request source in response to the priority designation input is processed independently of the priority of priority circuit with the most priority. Thus, the processing request taken place in failure can quickly and suitable be processed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2666579A JPS55119724A (en) | 1979-03-09 | 1979-03-09 | Priority selection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2666579A JPS55119724A (en) | 1979-03-09 | 1979-03-09 | Priority selection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55119724A true JPS55119724A (en) | 1980-09-13 |
Family
ID=12199692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2666579A Pending JPS55119724A (en) | 1979-03-09 | 1979-03-09 | Priority selection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55119724A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58223850A (en) * | 1982-06-23 | 1983-12-26 | Panafacom Ltd | Data processing system including priority deciding circuit |
JPS60175149A (en) * | 1984-02-21 | 1985-09-09 | Nec Corp | Interruption control device |
JPS6335141U (en) * | 1987-07-07 | 1988-03-07 | ||
JPS63269231A (en) * | 1987-04-27 | 1988-11-07 | Pfu Ltd | Interruption priority control system |
-
1979
- 1979-03-09 JP JP2666579A patent/JPS55119724A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58223850A (en) * | 1982-06-23 | 1983-12-26 | Panafacom Ltd | Data processing system including priority deciding circuit |
JPS60175149A (en) * | 1984-02-21 | 1985-09-09 | Nec Corp | Interruption control device |
JPH0443302B2 (en) * | 1984-02-21 | 1992-07-16 | Nippon Electric Co | |
JPS63269231A (en) * | 1987-04-27 | 1988-11-07 | Pfu Ltd | Interruption priority control system |
JPS6335141U (en) * | 1987-07-07 | 1988-03-07 |
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