JPS564848A - Restart system for computer - Google Patents

Restart system for computer

Info

Publication number
JPS564848A
JPS564848A JP7814379A JP7814379A JPS564848A JP S564848 A JPS564848 A JP S564848A JP 7814379 A JP7814379 A JP 7814379A JP 7814379 A JP7814379 A JP 7814379A JP S564848 A JPS564848 A JP S564848A
Authority
JP
Japan
Prior art keywords
computer
signal
counter
reset
input
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
JP7814379A
Other languages
Japanese (ja)
Inventor
Takaaki Furumoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7814379A priority Critical patent/JPS564848A/en
Publication of JPS564848A publication Critical patent/JPS564848A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To check the runaway of program with the external counter and to enable restart of computer, by providing the computer program runaway check means consisting of counters at the external side of computer.
CONSTITUTION: The computer 1 produces the reset signal every given period t according to the content. At normal running of program, the reset signal is periodically fed to the input and output interface circuit 2 from the computer 1. The reset signal is the counter reset signal 8 through the circuit 2 and input to the reset terminal of the counter 3, to reset the counter 3. When the counter 3 sequentially counts the input clock signal 7 and it is overflowed, the overflow signal 9 for runaway discrimination is produced. The signal 9 is input to the start terminal S of the computer 1 via the OR gate 10 and becomes the restart signal 6.
COPYRIGHT: (C)1981,JPO&Japio
JP7814379A 1979-06-22 1979-06-22 Restart system for computer Pending JPS564848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7814379A JPS564848A (en) 1979-06-22 1979-06-22 Restart system for computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7814379A JPS564848A (en) 1979-06-22 1979-06-22 Restart system for computer

Publications (1)

Publication Number Publication Date
JPS564848A true JPS564848A (en) 1981-01-19

Family

ID=13653654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7814379A Pending JPS564848A (en) 1979-06-22 1979-06-22 Restart system for computer

Country Status (1)

Country Link
JP (1) JPS564848A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194147U (en) * 1981-06-01 1982-12-09
JPS5819964A (en) * 1981-07-29 1983-02-05 Diesel Kiki Co Ltd Automatic recovering device for malfunction of operation controller
JPS58117062A (en) * 1981-12-29 1983-07-12 Toshiba Corp Initial circuit
JPS5943453A (en) * 1982-09-01 1984-03-10 Nippon Gakki Seizo Kk Runaway detector of computer system
JPS5949250U (en) * 1982-09-22 1984-04-02 株式会社チノ− Central processing unit reset circuit
JPS59183446A (en) * 1983-04-01 1984-10-18 Hitachi Denshi Ltd Control device runaway detection method
JPS6142624U (en) * 1984-08-24 1986-03-19 新電元工業株式会社 Computer system restart circuit
US4610013A (en) * 1983-11-08 1986-09-02 Avco Corporation Remote multiplexer terminal with redundant central processor units
JPS63268044A (en) * 1987-04-24 1988-11-04 Nec Corp Watchdog timer
US4875156A (en) * 1986-03-05 1989-10-17 Oki Electric Industry Co., Ltd. Computer having a protection device to selectively block incorrect control signals
JPH02236742A (en) * 1989-03-10 1990-09-19 Nec Corp Cpu abnormality detection circuit
US5155729A (en) * 1990-05-02 1992-10-13 Rolm Systems Fault recovery in systems utilizing redundant processor arrangements

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194147U (en) * 1981-06-01 1982-12-09
JPS5819964A (en) * 1981-07-29 1983-02-05 Diesel Kiki Co Ltd Automatic recovering device for malfunction of operation controller
JPS58117062A (en) * 1981-12-29 1983-07-12 Toshiba Corp Initial circuit
JPS5943453A (en) * 1982-09-01 1984-03-10 Nippon Gakki Seizo Kk Runaway detector of computer system
JPS5949250U (en) * 1982-09-22 1984-04-02 株式会社チノ− Central processing unit reset circuit
JPS59183446A (en) * 1983-04-01 1984-10-18 Hitachi Denshi Ltd Control device runaway detection method
US4610013A (en) * 1983-11-08 1986-09-02 Avco Corporation Remote multiplexer terminal with redundant central processor units
JPS6142624U (en) * 1984-08-24 1986-03-19 新電元工業株式会社 Computer system restart circuit
US4875156A (en) * 1986-03-05 1989-10-17 Oki Electric Industry Co., Ltd. Computer having a protection device to selectively block incorrect control signals
JPS63268044A (en) * 1987-04-24 1988-11-04 Nec Corp Watchdog timer
JPH02236742A (en) * 1989-03-10 1990-09-19 Nec Corp Cpu abnormality detection circuit
US5155729A (en) * 1990-05-02 1992-10-13 Rolm Systems Fault recovery in systems utilizing redundant processor arrangements

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