JPS5958855U - Microcomputer program runaway prevention system - Google Patents
Microcomputer program runaway prevention systemInfo
- Publication number
- JPS5958855U JPS5958855U JP15563382U JP15563382U JPS5958855U JP S5958855 U JPS5958855 U JP S5958855U JP 15563382 U JP15563382 U JP 15563382U JP 15563382 U JP15563382 U JP 15563382U JP S5958855 U JPS5958855 U JP S5958855U
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- output port
- reset
- program
- runaway prevention
- 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
- Multi Processors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来のプログラム暴走防止システムの構成図
を、第２図は、本考案の一実施例プログラム暴走防止回
路の構成図を、さらに第３図は本考案の他の実施例め構
成図をそれぞれ示している。
１・・・マイコン、２・・・プログ、ラム暴走防止回路
、１１〜ｉｎ・・・マイコン、３１〜３ｎ・・・マイコ
ン。FIG. 1 is a block diagram of a conventional program runaway prevention system, FIG. 2 is a block diagram of a program runaway prevention circuit according to an embodiment of the present invention, and FIG. 3 is a block diagram of another embodiment of the present invention. Figures are shown respectively. 1...Microcomputer, 2...Program, RAM runaway prevention circuit, 11~in...Microcomputer, 31~3n...Microcomputer.
Claims (1)
ルス信号を出力する出力ポート１ａと、プログラムをリ
セットしうる外部リセット信号を受けるリセット端子１
ｂとを有するマイクロコンピュータ１１〜Ｉｎ、３１〜
３１ｎを複数個備え、該複数個のマイクロコンピュータ
のうちの１つのマイクロコンピュータ１１．３１の出力
ポート１ａ及びリセット端子１ｂに接続され、前記１つ
のマイクロコンピュータ１１．３１の出力ポート１ａか
ら所定モードのパルス信号が出力されなくなったことを
検出して該１つのマイクロコンピュータのリセット端子
１ｂにリセット信号を出力するプログラム暴走防止回路
２を設け、更に前記１つのマイクロコンピュータ１１．
３１は、少なくとも１つの他のマイクロコンピュータ１
２〜Ｉｎ、３２〜３ｎの出力ポート１ａ及びリセット端
子１ｂに接続きれた入力ポートＩＣ及び他の出力ポート
１ａを介して前記他のマイクロコンピュータ１２〜Ｉｎ
。 ３２〜３ｎの出力ポート１ａから所定モードのパルス信
号が出力されなくなったことを検出して゛該他のマイク
ロコンピュータ１２〜ｉｎ、３２〜３ｎのリセット端子
１ｂにリセット信号を出力するプログラムを有すること
を特徴とするマイクロコン−ピユータのプログラム暴走
防止システム。[Claims for Utility Model Registration] An output port 1a that outputs a pulse signal in a predetermined mode when the program is operating normally, and a reset terminal 1 that receives an external reset signal that can reset the program.
Microcomputer 11~In, 31~ having b
31n, and is connected to the output port 1a and reset terminal 1b of one microcomputer 11.31 among the plurality of microcomputers, and is connected to the output port 1a of the one microcomputer 11.31 in a predetermined mode. A program runaway prevention circuit 2 is provided which detects that the pulse signal is no longer output and outputs a reset signal to the reset terminal 1b of the one microcomputer, and furthermore, the one microcomputer 11.
31 is at least one other microcomputer 1
The other microcomputers 12-In and 32-In through the input port IC and the other output port 1a connected to the output port 1a and reset terminal 1b of 32-In and 32-In, respectively.
. 32-3n has a program that detects that a pulse signal of a predetermined mode is no longer output from the output port 1a of the microcomputer 12-in and 32-3n and outputs a reset signal to the reset terminal 1b of the other microcomputers 12-in and 32-3n. Features: Microcomputer program runaway prevention system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15563382U JPS5958855U (en) | 1982-10-14 | 1982-10-14 | Microcomputer program runaway prevention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15563382U JPS5958855U (en) | 1982-10-14 | 1982-10-14 | Microcomputer program runaway prevention system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5958855U true JPS5958855U (en) | 1984-04-17 |
Family
ID=30343671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15563382U Pending JPS5958855U (en) | 1982-10-14 | 1982-10-14 | Microcomputer program runaway prevention system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5958855U (en) |
-
1982
- 1982-10-14 JP JP15563382U patent/JPS5958855U/en active Pending
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