JPS5587252A - Display and prevention circuit for computer reckless run - Google Patents

Display and prevention circuit for computer reckless run

Info

Publication number
JPS5587252A
JPS5587252A JP16334478A JP16334478A JPS5587252A JP S5587252 A JPS5587252 A JP S5587252A JP 16334478 A JP16334478 A JP 16334478A JP 16334478 A JP16334478 A JP 16334478A JP S5587252 A JPS5587252 A JP S5587252A
Authority
JP
Japan
Prior art keywords
cut
reckless
run
instruction
computer
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
JP16334478A
Other languages
Japanese (ja)
Inventor
Ryuichi Saigo
Yoshitake Itabashi
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP16334478A priority Critical patent/JPS5587252A/en
Publication of JPS5587252A publication Critical patent/JPS5587252A/en
Pending legal-status Critical Current

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  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To prevent a reckless run by automatically a process by inserting a specific instruction for a reckless-run check into a processing program and then by executing this routine once in a certain time without fail.
CONSTITUTION: In processing program PGM, a specific reckless-run check instruction RCD is written at a fixed address. In a certain processing time, this routine containing this reckless-run check instruction is executed once without fail. Then, actuating a computer clears counters CUT1 and CUT2 by power-feeding signal PO and CUT1 starts counting clock pulses Pc. The computer, on the other hand, executes instructions according to processing program PGM. Through the execution of instruction RCD in PGM, counters CUT1 and CUT2 are cleared by a signal from decoder DEC and carry signal CA2 is not outputted. Once a reckless run occurs, instruction RCD is not executed, and consequently counter CUT2 overflows to output signal CA2, causing an actuation stop.
COPYRIGHT: (C)1980,JPO&Japio
JP16334478A 1978-12-26 1978-12-26 Display and prevention circuit for computer reckless run Pending JPS5587252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16334478A JPS5587252A (en) 1978-12-26 1978-12-26 Display and prevention circuit for computer reckless run

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16334478A JPS5587252A (en) 1978-12-26 1978-12-26 Display and prevention circuit for computer reckless run

Publications (1)

Publication Number Publication Date
JPS5587252A true JPS5587252A (en) 1980-07-01

Family

ID=15772082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16334478A Pending JPS5587252A (en) 1978-12-26 1978-12-26 Display and prevention circuit for computer reckless run

Country Status (1)

Country Link
JP (1) JPS5587252A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5846451A (en) * 1981-09-14 1983-03-17 Fujitsu Ltd Detection processing system for runaway of program
JPS599762A (en) * 1982-07-07 1984-01-19 Chino Works Ltd Error detecting circuit
JPS59183446A (en) * 1983-04-01 1984-10-18 Hitachi Denshi Ltd Detecting method for runaway of controller
JPS60147852A (en) * 1984-01-11 1985-08-03 Sharp Corp Lsi device
JPS6162947A (en) * 1984-09-04 1986-03-31 Kubota Ltd Method for preventing runaway of computer
JPS61120955U (en) * 1985-01-14 1986-07-30
JPS6228264U (en) * 1985-07-31 1987-02-20
JPS62256051A (en) * 1986-04-30 1987-11-07 Nec Corp Monitoring circuit for normal operation of cpu
JPS63103150U (en) * 1986-12-22 1988-07-04

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5846451A (en) * 1981-09-14 1983-03-17 Fujitsu Ltd Detection processing system for runaway of program
JPS599762A (en) * 1982-07-07 1984-01-19 Chino Works Ltd Error detecting circuit
JPS59183446A (en) * 1983-04-01 1984-10-18 Hitachi Denshi Ltd Detecting method for runaway of controller
JPS60147852A (en) * 1984-01-11 1985-08-03 Sharp Corp Lsi device
JPS6162947A (en) * 1984-09-04 1986-03-31 Kubota Ltd Method for preventing runaway of computer
JPS61120955U (en) * 1985-01-14 1986-07-30
JPS6228264U (en) * 1985-07-31 1987-02-20
JPS62256051A (en) * 1986-04-30 1987-11-07 Nec Corp Monitoring circuit for normal operation of cpu
JPS63103150U (en) * 1986-12-22 1988-07-04

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