JPS5556258A - Priority decision system - Google Patents
Priority decision systemInfo
- Publication number
- JPS5556258A JPS5556258A JP12871178A JP12871178A JPS5556258A JP S5556258 A JPS5556258 A JP S5556258A JP 12871178 A JP12871178 A JP 12871178A JP 12871178 A JP12871178 A JP 12871178A JP S5556258 A JPS5556258 A JP S5556258A
- Authority
- JP
- Japan
- Prior art keywords
- interruption
- stored
- various
- address
- rom101
- 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
Abstract
PURPOSE: To lighten a load upon hardware by making a decision on priority given to various interruption requests of an information processor, by effectively using firmware.
CONSTITUTION: Control memory part P-ROM101 stored with various microprograms is stored with branch microinstruction tables BU-CWBU-A showing start addresses of various interruption processing routines, and auxiliary control memory part E-ROM102 is with the microaddress of a 2nd micro-step; when interruption control signal E/I is sent out at interruption check timing in the finol step of one instruction process, the output operation of E-ROM102 is inhibited and an address is stored in branch instruction assignment address register 103 as an address of P- ROM101 outputted from gates G1WG3 having received interruption signals AWC by types, thereby making jumps to addresses of respective processing routines in the priority order of types AWC.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12871178A JPS5556258A (en) | 1978-10-19 | 1978-10-19 | Priority decision system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12871178A JPS5556258A (en) | 1978-10-19 | 1978-10-19 | Priority decision system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5556258A true JPS5556258A (en) | 1980-04-24 |
JPS6148742B2 JPS6148742B2 (en) | 1986-10-25 |
Family
ID=14991531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12871178A Granted JPS5556258A (en) | 1978-10-19 | 1978-10-19 | Priority decision system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556258A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08214294A (en) * | 1994-09-30 | 1996-08-20 | Sgs Thomson Microelectron Sa | Control processor for moving image compression circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49111561A (en) * | 1973-02-22 | 1974-10-24 | ||
JPS5366337A (en) * | 1976-11-26 | 1978-06-13 | Nec Corp | Interrupt channel analyzer |
JPS54152939A (en) * | 1978-05-24 | 1979-12-01 | Fujitsu Ltd | Microprogram interruption control system |
-
1978
- 1978-10-19 JP JP12871178A patent/JPS5556258A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49111561A (en) * | 1973-02-22 | 1974-10-24 | ||
JPS5366337A (en) * | 1976-11-26 | 1978-06-13 | Nec Corp | Interrupt channel analyzer |
JPS54152939A (en) * | 1978-05-24 | 1979-12-01 | Fujitsu Ltd | Microprogram interruption control system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08214294A (en) * | 1994-09-30 | 1996-08-20 | Sgs Thomson Microelectron Sa | Control processor for moving image compression circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6148742B2 (en) | 1986-10-25 |
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