JPS54157049A - Interrupt address determination processing system - Google Patents
Interrupt address determination processing systemInfo
- Publication number
- JPS54157049A JPS54157049A JP6543078A JP6543078A JPS54157049A JP S54157049 A JPS54157049 A JP S54157049A JP 6543078 A JP6543078 A JP 6543078A JP 6543078 A JP6543078 A JP 6543078A JP S54157049 A JPS54157049 A JP S54157049A
- Authority
- JP
- Japan
- Prior art keywords
- interrupt
- request
- priority
- register
- branching
- 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)
Abstract
PURPOSE: To make it possible to extract effectively a higher-priority interrupt factor by branching for an interrupt factor having the highest priority when a micro processor branches to an interrupt processing routine actually.
CONSTITUTION: Interrupt control circuit 17 which has received an interrupt request from an input/output control register supplies the interrupt request signal to MPU 13. Then, micro processor MPU 13 starts the interrupt processing, and reads contents of interrupt vector address register 22 when branching to the interrupt routine. Meanwhile, if a new interrupt request is supplied to circuit part 17, register 22 stores this request. Then, the interrupt processing is performed for the highest- priority interrupt request at a timing when MPU 13 reads content of register 22, and branching is performed in a prescribed routine. As a result, a higher-priority interrupt request can be extracted.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6543078A JPS54157049A (en) | 1978-05-31 | 1978-05-31 | Interrupt address determination processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6543078A JPS54157049A (en) | 1978-05-31 | 1978-05-31 | Interrupt address determination processing system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54157049A true JPS54157049A (en) | 1979-12-11 |
JPS6143747B2 JPS6143747B2 (en) | 1986-09-29 |
Family
ID=13286862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6543078A Granted JPS54157049A (en) | 1978-05-31 | 1978-05-31 | Interrupt address determination processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54157049A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4940446A (en) * | 1972-08-19 | 1974-04-16 | ||
JPS4952944A (en) * | 1972-06-27 | 1974-05-23 |
-
1978
- 1978-05-31 JP JP6543078A patent/JPS54157049A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4952944A (en) * | 1972-06-27 | 1974-05-23 | ||
JPS4940446A (en) * | 1972-08-19 | 1974-04-16 |
Also Published As
Publication number | Publication date |
---|---|
JPS6143747B2 (en) | 1986-09-29 |
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