JPS57127257A - System for detecting runaway of program - Google Patents

System for detecting runaway of program

Info

Publication number
JPS57127257A
JPS57127257A JP56012056A JP1205681A JPS57127257A JP S57127257 A JPS57127257 A JP S57127257A JP 56012056 A JP56012056 A JP 56012056A JP 1205681 A JP1205681 A JP 1205681A JP S57127257 A JPS57127257 A JP S57127257A
Authority
JP
Japan
Prior art keywords
program
microprocessor
runaway
flip flop
reset
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
JP56012056A
Other languages
Japanese (ja)
Inventor
Shigeo Matsunaga
Yoshio Iizuka
Tsutomu Oshima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56012056A priority Critical patent/JPS57127257A/en
Publication of JPS57127257A publication Critical patent/JPS57127257A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To detect the runaway of a program to initialize automatically a microprocessor, by make an excess memory such as of the parity check system unnecessary and providing a simple circuit additionally. CONSTITUTION:Since an used area is accessed for the runaway of a program, the address of the unused area is decoded by a decoder 4, and the signal at a pint (a) becomes 1, and it is read to a J-K flip flop 5. By an output Q of the J-K flip flop 5, an LED is lit, and a microprocessor is reset. Since this state is held unless the J-K flip flop 5 is reset from the external, the microprocessor is automatically initialized to stop the runaway of the program when the microprocessor 1 accesses the unused area even if one time.
JP56012056A 1981-01-29 1981-01-29 System for detecting runaway of program Pending JPS57127257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012056A JPS57127257A (en) 1981-01-29 1981-01-29 System for detecting runaway of program

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012056A JPS57127257A (en) 1981-01-29 1981-01-29 System for detecting runaway of program

Publications (1)

Publication Number Publication Date
JPS57127257A true JPS57127257A (en) 1982-08-07

Family

ID=11794938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012056A Pending JPS57127257A (en) 1981-01-29 1981-01-29 System for detecting runaway of program

Country Status (1)

Country Link
JP (1) JPS57127257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238947A (en) * 1984-05-11 1985-11-27 Fuji Xerox Co Ltd Malfunction detecting circuit of microprocessor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104833A (en) * 1976-03-01 1977-09-02 Hitachi Ltd Depacking device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104833A (en) * 1976-03-01 1977-09-02 Hitachi Ltd Depacking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238947A (en) * 1984-05-11 1985-11-27 Fuji Xerox Co Ltd Malfunction detecting circuit of microprocessor

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