JPS55146553A - Controlling circuit of program of microcomputer - Google Patents

Controlling circuit of program of microcomputer

Info

Publication number
JPS55146553A
JPS55146553A JP5349679A JP5349679A JPS55146553A JP S55146553 A JPS55146553 A JP S55146553A JP 5349679 A JP5349679 A JP 5349679A JP 5349679 A JP5349679 A JP 5349679A JP S55146553 A JPS55146553 A JP S55146553A
Authority
JP
Japan
Prior art keywords
address
interruption
program
signal
microcomputer
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
JP5349679A
Other languages
Japanese (ja)
Inventor
Norio Tanaka
Takeshi Imaizumi
Sumio Nakagawa
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 JP5349679A priority Critical patent/JPS55146553A/en
Publication of JPS55146553A publication Critical patent/JPS55146553A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To halt a malfunction of a computer, by providing a means for selecting an address except that of an external memory element selected by a microcomputer, and that of an input circuit, and connecting an output of the aforesaid means to an interruption terminal.
CONSTITUTION: When a program causes a malfunction due to an external noise, an address which cannot be generated in an address bus line 6 comes out, therefore an address decoder 10 seizes this address signal and inputs the signal to an interruption input terminal 12. A microprocessor halts a flow of program which has been operated until that time when the above signal is input to the interruption input terminal 12, and it jumps to a specific interruption processing address. As a result of the foregoing, an interruption processing routine is executed, runaway of the program is halted, and the processing based upon a normal instruction is carried out, therefore stability of the whole system can be maintained and a bad effect to the outside can be suppressed, as well.
COPYRIGHT: (C)1980,JPO&Japio
JP5349679A 1979-05-02 1979-05-02 Controlling circuit of program of microcomputer Pending JPS55146553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5349679A JPS55146553A (en) 1979-05-02 1979-05-02 Controlling circuit of program of microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5349679A JPS55146553A (en) 1979-05-02 1979-05-02 Controlling circuit of program of microcomputer

Publications (1)

Publication Number Publication Date
JPS55146553A true JPS55146553A (en) 1980-11-14

Family

ID=12944433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5349679A Pending JPS55146553A (en) 1979-05-02 1979-05-02 Controlling circuit of program of microcomputer

Country Status (1)

Country Link
JP (1) JPS55146553A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595485A1 (en) * 1986-03-05 1987-09-11 Oki Electric Ind Co Ltd COMPUTER, IN PARTICULAR MICROCOMPUTER WITH INTEGRATED CIRCUIT
JPH0370652U (en) * 1989-11-13 1991-07-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595485A1 (en) * 1986-03-05 1987-09-11 Oki Electric Ind Co Ltd COMPUTER, IN PARTICULAR MICROCOMPUTER WITH INTEGRATED CIRCUIT
JPH0370652U (en) * 1989-11-13 1991-07-16

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