JPS5642830A - Priority interruption control system for data processor - Google Patents
Priority interruption control system for data processorInfo
- Publication number
- JPS5642830A JPS5642830A JP11985179A JP11985179A JPS5642830A JP S5642830 A JPS5642830 A JP S5642830A JP 11985179 A JP11985179 A JP 11985179A JP 11985179 A JP11985179 A JP 11985179A JP S5642830 A JPS5642830 A JP S5642830A
- Authority
- JP
- Japan
- Prior art keywords
- interruption
- unit
- peripheral unit
- control system
- serial connection
- 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
- Bus Control (AREA)
Abstract
PURPOSE: To realize a multiplex interruption for the priority interruption control system between the peripheral unit and the CPU, not only by securing a serial connection for each peripheral unit via the normal interruption answer signal line but by securing a serial connection for each peripheral unit via the interruption request line.
CONSTITUTION: When an interruption request is produced at an optional peripheral unit 21, the interruption request signal IRQ' is supplied to the CPU1 after passing through the higher-rank peripheral unit 20 directly. The answer signal IAK is sent to the unit 21 after passing through the unit 20 directly. And the transmission of the signal IAK is cut off within the unit 21, and the interruption data word generated according to the transmission cutoff of the signal IAK is sent to the CPU1 via the system bus 5. Thus a serial connection is secured between the units 21 and 20 by the IRQ', at the same time realizing a multiplex interruption.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11985179A JPS5642830A (en) | 1979-09-18 | 1979-09-18 | Priority interruption control system for data processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11985179A JPS5642830A (en) | 1979-09-18 | 1979-09-18 | Priority interruption control system for data processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5642830A true JPS5642830A (en) | 1981-04-21 |
Family
ID=14771833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11985179A Pending JPS5642830A (en) | 1979-09-18 | 1979-09-18 | Priority interruption control system for data processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5642830A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57176439A (en) * | 1981-04-24 | 1982-10-29 | Hitachi Ltd | Service request transmission control system |
-
1979
- 1979-09-18 JP JP11985179A patent/JPS5642830A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57176439A (en) * | 1981-04-24 | 1982-10-29 | Hitachi Ltd | Service request transmission control system |
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