JPS55123740A - Information processing unit - Google Patents
Information processing unitInfo
- Publication number
- JPS55123740A JPS55123740A JP3050679A JP3050679A JPS55123740A JP S55123740 A JPS55123740 A JP S55123740A JP 3050679 A JP3050679 A JP 3050679A JP 3050679 A JP3050679 A JP 3050679A JP S55123740 A JPS55123740 A JP S55123740A
- Authority
- JP
- Japan
- Prior art keywords
- interrupt
- signal
- detector
- change
- high level
- 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 make it possible to perform a complicated interrupt control accurately with a simple circuit constitution, by detecting the change from a high level to a low level or the change from the low level to the high level for the signal of an interrupt signal input terminal to perform the interrupt control.
CONSTITUTION: Rise signal detector 2 and fall signal detector 3 are connected in parallel to terminal 1 where the interrupt signal is inputted. The change from a low level to a high level of the input signal is detected by detector 2, and by the output of detector 2, rise interrupt address generating circuit 4 writes the interrupt address to program counter 6, and CPU9 executes the instruction, which is written at the interrupt address, dependently upon this address designation. Meanwhile, the change from the high level to the low level of the input signal executes the instruction, which is written at the interrupt address, through detector 3, fall interrupt address generating circuit 5 and counter 6 similarly. As a result, a complicated interrupt control can be performed accurately with a simple circuit constitution.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3050679A JPS55123740A (en) | 1979-03-15 | 1979-03-15 | Information processing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3050679A JPS55123740A (en) | 1979-03-15 | 1979-03-15 | Information processing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55123740A true JPS55123740A (en) | 1980-09-24 |
Family
ID=12305694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3050679A Pending JPS55123740A (en) | 1979-03-15 | 1979-03-15 | Information processing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55123740A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61249142A (en) * | 1985-04-27 | 1986-11-06 | Sharp Corp | Interruption circuit |
JPH0193827A (en) * | 1987-10-05 | 1989-04-12 | Nec Corp | Interrupting circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5125946A (en) * | 1974-08-27 | 1976-03-03 | Kawasaki Heavy Ind Ltd | |
JPS52130252A (en) * | 1976-04-24 | 1977-11-01 | Meidensha Electric Mfg Co Ltd | Digital control unit |
-
1979
- 1979-03-15 JP JP3050679A patent/JPS55123740A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5125946A (en) * | 1974-08-27 | 1976-03-03 | Kawasaki Heavy Ind Ltd | |
JPS52130252A (en) * | 1976-04-24 | 1977-11-01 | Meidensha Electric Mfg Co Ltd | Digital control unit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61249142A (en) * | 1985-04-27 | 1986-11-06 | Sharp Corp | Interruption circuit |
JPH0193827A (en) * | 1987-10-05 | 1989-04-12 | Nec Corp | Interrupting circuit |
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