JPS5737797A - Checking method for storage contents of rom using redundant code system - Google Patents

Checking method for storage contents of rom using redundant code system

Info

Publication number
JPS5737797A
JPS5737797A JP11175380A JP11175380A JPS5737797A JP S5737797 A JPS5737797 A JP S5737797A JP 11175380 A JP11175380 A JP 11175380A JP 11175380 A JP11175380 A JP 11175380A JP S5737797 A JPS5737797 A JP S5737797A
Authority
JP
Japan
Prior art keywords
rom
roms
checksum
storage
storage contents
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.)
Granted
Application number
JP11175380A
Other languages
Japanese (ja)
Other versions
JPS6131902B2 (en
Inventor
Yojiro Yokoi
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.)
Kyosan Electric Manufacturing Co Ltd
Original Assignee
Kyosan Electric Manufacturing 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 Kyosan Electric Manufacturing Co Ltd filed Critical Kyosan Electric Manufacturing Co Ltd
Priority to JP11175380A priority Critical patent/JPS5737797A/en
Publication of JPS5737797A publication Critical patent/JPS5737797A/en
Publication of JPS6131902B2 publication Critical patent/JPS6131902B2/ja
Granted 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

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)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To eliminate the need to modify a check program even when more ROMs are installed, by advancing a check on the storage contents of a ROM according to the storage contante of another ROM. CONSTITUTION:When three ROMs are used, ADRSs 1-3 of each ROM are set at parts 6-8 of address parts 5 of the ROMs 1, 2 and 3. The checksum of those three ROMs is stored in a ROM dedicated to checksum storage. In this ROM, the starting addresses 9 of the ROMs 1-3, the number of bytes 10 as the numbers of data, and the checksum 11 are stored as blocks of each ROM successively in the form of the ASCII code. A check on the storage contents starts at the starting address of the ROM and ends with an end code 18. Consequently, even when ROMs are installed more, the contents of the ROM for the checksum is only varied slightly.
JP11175380A 1980-08-15 1980-08-15 Checking method for storage contents of rom using redundant code system Granted JPS5737797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11175380A JPS5737797A (en) 1980-08-15 1980-08-15 Checking method for storage contents of rom using redundant code system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11175380A JPS5737797A (en) 1980-08-15 1980-08-15 Checking method for storage contents of rom using redundant code system

Publications (2)

Publication Number Publication Date
JPS5737797A true JPS5737797A (en) 1982-03-02
JPS6131902B2 JPS6131902B2 (en) 1986-07-23

Family

ID=14569308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11175380A Granted JPS5737797A (en) 1980-08-15 1980-08-15 Checking method for storage contents of rom using redundant code system

Country Status (1)

Country Link
JP (1) JPS5737797A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196027A (en) * 1984-03-19 1985-10-04 Tsubakimoto Chain Co Time-division multiplex transmission system
JPH03303U (en) * 1989-05-26 1991-01-07
JPH0648010U (en) * 1992-11-30 1994-06-28 株式会社島津製作所 Fluid control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196027A (en) * 1984-03-19 1985-10-04 Tsubakimoto Chain Co Time-division multiplex transmission system
JPH0546733B2 (en) * 1984-03-19 1993-07-14 Tsubakimoto Chain Co
JPH03303U (en) * 1989-05-26 1991-01-07
JPH0648010U (en) * 1992-11-30 1994-06-28 株式会社島津製作所 Fluid control valve

Also Published As

Publication number Publication date
JPS6131902B2 (en) 1986-07-23

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