JPS5642865A - Program runaway detecting circuit of microcomputer - Google Patents

Program runaway detecting circuit of microcomputer

Info

Publication number
JPS5642865A
JPS5642865A JP11954779A JP11954779A JPS5642865A JP S5642865 A JPS5642865 A JP S5642865A JP 11954779 A JP11954779 A JP 11954779A JP 11954779 A JP11954779 A JP 11954779A JP S5642865 A JPS5642865 A JP S5642865A
Authority
JP
Japan
Prior art keywords
runaway
bus line
given
detecting circuit
line
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
Application number
JP11954779A
Other languages
Japanese (ja)
Inventor
Kenji Komaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOKKAIDO BUNKA HOSO KK
HOKKAIDO BUNKA HOUSOU KK
Original Assignee
HOKKAIDO BUNKA HOSO KK
HOKKAIDO BUNKA HOUSOU KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HOKKAIDO BUNKA HOSO KK, HOKKAIDO BUNKA HOUSOU KK filed Critical HOKKAIDO BUNKA HOSO KK
Priority to JP11954779A priority Critical patent/JPS5642865A/en
Publication of JPS5642865A publication Critical patent/JPS5642865A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To detect the runaway of the program for the computer, by giving a monitor to the level change of the signal line which does not work when a normal state is given on the bus line connected to the computer.
CONSTITUTION: The microcomputer incorporates the ROM2, RAM3, I/04 and CPU5 each centering on the bus line 1. Then the runaway detecting circuit 6 is connected to the bus line 1 to detect the particular operation different from that of the normal time when the runaway is given. In other words, a monitor is given to the logic level of one or more pieces of signal lines which does not work at the normal line on the bus line, and the runaway can be detected from the change of the logic level. This signal line is selected at the areas of a proper number of secure a detection in a more assured and quicker way. Thus the damage due to the runaway can be minimized.
COPYRIGHT: (C)1981,JPO&Japio
JP11954779A 1979-09-17 1979-09-17 Program runaway detecting circuit of microcomputer Pending JPS5642865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11954779A JPS5642865A (en) 1979-09-17 1979-09-17 Program runaway detecting circuit of microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11954779A JPS5642865A (en) 1979-09-17 1979-09-17 Program runaway detecting circuit of microcomputer

Publications (1)

Publication Number Publication Date
JPS5642865A true JPS5642865A (en) 1981-04-21

Family

ID=14763998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11954779A Pending JPS5642865A (en) 1979-09-17 1979-09-17 Program runaway detecting circuit of microcomputer

Country Status (1)

Country Link
JP (1) JPS5642865A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524457U (en) * 1991-09-13 1993-03-30 スズキ株式会社 Vehicle harness protection structure
KR100335714B1 (en) * 1993-09-25 2002-11-13 로베르트 보쉬 게엠베하 Micro Computer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524457U (en) * 1991-09-13 1993-03-30 スズキ株式会社 Vehicle harness protection structure
KR100335714B1 (en) * 1993-09-25 2002-11-13 로베르트 보쉬 게엠베하 Micro Computer

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