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JPS5755460A - Information processor - Google Patents

Information processor

Info

Publication number
JPS5755460A
JPS5755460A JP55129213A JP12921380A JPS5755460A JP S5755460 A JPS5755460 A JP S5755460A JP 55129213 A JP55129213 A JP 55129213A JP 12921380 A JP12921380 A JP 12921380A JP S5755460 A JPS5755460 A JP S5755460A
Authority
JP
Japan
Prior art keywords
program
address
content
storage device
execution
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
JP55129213A
Other languages
Japanese (ja)
Inventor
Hirokimi Shimizu
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55129213A priority Critical patent/JPS5755460A/en
Publication of JPS5755460A publication Critical patent/JPS5755460A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751Error or fault detection not based on redundancy
    • G06F11/0763Error or fault detection not based on redundancy by bit configuration check, e.g. of formats or tags

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 prevent program from runaway, by detecting if the content of a program counter performing the designation of address of a storage device is an even or odd number, and discriminating that the execution program is in error if the content is an odd number. CONSTITUTION:The instruction word system is constituted by taking the number of bits being a multiple of an even number of bit number constituting the content of the minimum unit of the address for the storage device as the word. An operation controller 1 reads out a program from the address of a main storage device designated for the address at a program counter 2 for sequential execution. When the program is executed normally, the output of an OR gate is zero, but if a program error takes place, 1 is applied from the least significant bit of the program counter 2, the output of the OR gate 5 is at 1, and it is applied to an interruption signal generating circuit 3, and the operating controller 1 rewrites the content of the program counter 2 to the designated address of the monitor program and interrupts the execution of the processing program.
JP55129213A 1980-09-19 1980-09-19 Information processor Pending JPS5755460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129213A JPS5755460A (en) 1980-09-19 1980-09-19 Information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129213A JPS5755460A (en) 1980-09-19 1980-09-19 Information processor

Publications (1)

Publication Number Publication Date
JPS5755460A true JPS5755460A (en) 1982-04-02

Family

ID=15003925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129213A Pending JPS5755460A (en) 1980-09-19 1980-09-19 Information processor

Country Status (1)

Country Link
JP (1) JPS5755460A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875156A (en) * 1986-03-05 1989-10-17 Oki Electric Industry Co., Ltd. Computer having a protection device to selectively block incorrect control signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875156A (en) * 1986-03-05 1989-10-17 Oki Electric Industry Co., Ltd. Computer having a protection device to selectively block incorrect control signals

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