JPS56143057A - Failure state detecting system for program instruction - Google Patents

Failure state detecting system for program instruction

Info

Publication number
JPS56143057A
JPS56143057A JP4664780A JP4664780A JPS56143057A JP S56143057 A JPS56143057 A JP S56143057A JP 4664780 A JP4664780 A JP 4664780A JP 4664780 A JP4664780 A JP 4664780A JP S56143057 A JPS56143057 A JP S56143057A
Authority
JP
Japan
Prior art keywords
data
instruction
execution
parity error
state
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
JP4664780A
Other languages
Japanese (ja)
Inventor
Keiji Takahashi
Yasumitsu Komatsu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4664780A priority Critical patent/JPS56143057A/en
Publication of JPS56143057A publication Critical patent/JPS56143057A/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
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE:To enable to detect the state of failure at the execution of PG, by writing in the data causing the parity error to the memory area other than the program PG instruction data storage area and constant data storage area, before the execution of PG. CONSTITUTION:Before the PG instruction data and constant data storage, the data causing the parity error is written in the entire memory area of hatched part by using the memory test cycle or the like. Next, when the data having the bit constitution not causing the parity error is stored in the PG instruction data and constant data storage, the state is shown in the space in Figure. With this state, at the execution of PG instruction, when the PG counter designates the address of the memory area other than PR instruction data and constant data of the address (n) as shown in dotted arrow lines (b), parity error is produced, the execution of PR instruction is stopped and the failed state can be detected.
JP4664780A 1980-04-09 1980-04-09 Failure state detecting system for program instruction Pending JPS56143057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4664780A JPS56143057A (en) 1980-04-09 1980-04-09 Failure state detecting system for program instruction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4664780A JPS56143057A (en) 1980-04-09 1980-04-09 Failure state detecting system for program instruction

Publications (1)

Publication Number Publication Date
JPS56143057A true JPS56143057A (en) 1981-11-07

Family

ID=12753098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4664780A Pending JPS56143057A (en) 1980-04-09 1980-04-09 Failure state detecting system for program instruction

Country Status (1)

Country Link
JP (1) JPS56143057A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621037A (en) * 1985-06-05 1987-01-07 Fujitsu Ltd Access detecting system for memory undefined area
JPH02141832A (en) * 1988-11-24 1990-05-31 Fujitsu Ltd Microprocessor control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621037A (en) * 1985-06-05 1987-01-07 Fujitsu Ltd Access detecting system for memory undefined area
JPH02141832A (en) * 1988-11-24 1990-05-31 Fujitsu Ltd Microprocessor control system

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