JPS6488815A - Reset system for cpu - Google Patents
Reset system for cpuInfo
- Publication number
- JPS6488815A JPS6488815A JP62246192A JP24619287A JPS6488815A JP S6488815 A JPS6488815 A JP S6488815A JP 62246192 A JP62246192 A JP 62246192A JP 24619287 A JP24619287 A JP 24619287A JP S6488815 A JPS6488815 A JP S6488815A
- Authority
- JP
- Japan
- Prior art keywords
- cpu
- reset
- delay
- keyboard
- signal
- 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 reset a CPU to the initial state from an input means like a keyboard by delaying an interruption signal based on information input, and activating a delay output signal at the time of not resetting the interruption signal within the delay time. CONSTITUTION:The interruption signal is outputted from a keyboard interface 4 of a CPU main body 1 based on information input due to the operation on a keyboard 2 and is delayed in a delay circuit 7 like a monostable multivibrator by a prescribed time. When a reset signal is outputted from a CPU 3 within this delay time, the delay output of the circuit 7 is prevented from being activated. Meanwhile, when the reset signal is not outputted within the delay time, it is decided that the CPU 3 is run away, and the CPU 3 is reset to the initial state by the delay output from the circuit 7. Consequently, the CPU can be reset through the keyboard 2, and the CPU which is run away is not reset by the CPU but is reset from the external.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246192A JPS6488815A (en) | 1987-09-30 | 1987-09-30 | Reset system for cpu |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246192A JPS6488815A (en) | 1987-09-30 | 1987-09-30 | Reset system for cpu |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488815A true JPS6488815A (en) | 1989-04-03 |
Family
ID=17144884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246192A Pending JPS6488815A (en) | 1987-09-30 | 1987-09-30 | Reset system for cpu |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488815A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016012199A (en) * | 2014-06-27 | 2016-01-21 | 日本無線株式会社 | Electronic apparatus with reset function |
-
1987
- 1987-09-30 JP JP62246192A patent/JPS6488815A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016012199A (en) * | 2014-06-27 | 2016-01-21 | 日本無線株式会社 | Electronic apparatus with reset function |
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