JPS54152939A - Microprogram interruption control system - Google Patents
Microprogram interruption control systemInfo
- Publication number
- JPS54152939A JPS54152939A JP6207978A JP6207978A JPS54152939A JP S54152939 A JPS54152939 A JP S54152939A JP 6207978 A JP6207978 A JP 6207978A JP 6207978 A JP6207978 A JP 6207978A JP S54152939 A JPS54152939 A JP S54152939A
- Authority
- JP
- Japan
- Prior art keywords
- interruption
- address
- counter
- bits
- fixed
- 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 perform instruction control with neither increase in the number of circuits nor waste of time, by the logic state of interruption request signal lines to part of bits of a program counter and by perform a process with the rest set to a fixed value.
CONSTITUTION: The logic state of the n-number interruption request signal lines RQi at the time of interruption is set to fixed bits of program address counter PC by way of switching circuit SW. The remaining bits of counter PC are fixed to a fixed value and therefore when an interruption request is sent to one of signals lines 1 to (n), counter PC is set to an address value equivalent to the interruption request state of them and has a different address. Then, this is used as the head address of an interruption process routine where a branch operation is performed. Consequently, an interruption address circuit attending on an interruption control circuit on an address vector system can be simplified.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6207978A JPS54152939A (en) | 1978-05-24 | 1978-05-24 | Microprogram interruption control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6207978A JPS54152939A (en) | 1978-05-24 | 1978-05-24 | Microprogram interruption control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54152939A true JPS54152939A (en) | 1979-12-01 |
Family
ID=13189694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6207978A Pending JPS54152939A (en) | 1978-05-24 | 1978-05-24 | Microprogram interruption control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54152939A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5556258A (en) * | 1978-10-19 | 1980-04-24 | Toshiba Corp | Priority decision system |
JPS5797149A (en) * | 1980-12-09 | 1982-06-16 | Seiko Epson Corp | Interruption processing circuit |
JPS6057440A (en) * | 1983-09-08 | 1985-04-03 | Nippon Telegr & Teleph Corp <Ntt> | Information processor |
-
1978
- 1978-05-24 JP JP6207978A patent/JPS54152939A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5556258A (en) * | 1978-10-19 | 1980-04-24 | Toshiba Corp | Priority decision system |
JPS6148742B2 (en) * | 1978-10-19 | 1986-10-25 | Tokyo Shibaura Electric Co | |
JPS5797149A (en) * | 1980-12-09 | 1982-06-16 | Seiko Epson Corp | Interruption processing circuit |
JPS6057440A (en) * | 1983-09-08 | 1985-04-03 | Nippon Telegr & Teleph Corp <Ntt> | Information processor |
JPH0347536B2 (en) * | 1983-09-08 | 1991-07-19 | Nippon Telegraph & Telephone |
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