JPS5538652A - Memory error detecting method - Google Patents

Memory error detecting method

Info

Publication number
JPS5538652A
JPS5538652A JP11075878A JP11075878A JPS5538652A JP S5538652 A JPS5538652 A JP S5538652A JP 11075878 A JP11075878 A JP 11075878A JP 11075878 A JP11075878 A JP 11075878A JP S5538652 A JPS5538652 A JP S5538652A
Authority
JP
Japan
Prior art keywords
memory
detecting method
error detecting
result
memory error
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
JP11075878A
Other languages
Japanese (ja)
Other versions
JPS5838880B2 (en
Inventor
Nobuteru Asai
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 JP53110758A priority Critical patent/JPS5838880B2/en
Publication of JPS5538652A publication Critical patent/JPS5538652A/en
Publication of JPS5838880B2 publication Critical patent/JPS5838880B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To make program modification possible by additional wirting to a memory by detecting an error by cylically adding memory addresses on a fixed system.
CONSTITUTION: Contents A and B at memory addresses are cyclically added on the basis of formula I to obtain result Z and depending upon whether the result Z is equal to a fixed value, a decision on an error is made, so that even if there is no memory data, an influence upon the arithmetic result will never be exerted. Therefore, additional writing to the memory makes it possible to modify a program and operation for the program modification is simplified.
COPYRIGHT: (C)1980,JPO&Japio
JP53110758A 1978-09-11 1978-09-11 Memory error detection method Expired JPS5838880B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53110758A JPS5838880B2 (en) 1978-09-11 1978-09-11 Memory error detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53110758A JPS5838880B2 (en) 1978-09-11 1978-09-11 Memory error detection method

Publications (2)

Publication Number Publication Date
JPS5538652A true JPS5538652A (en) 1980-03-18
JPS5838880B2 JPS5838880B2 (en) 1983-08-25

Family

ID=14543809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53110758A Expired JPS5838880B2 (en) 1978-09-11 1978-09-11 Memory error detection method

Country Status (1)

Country Link
JP (1) JPS5838880B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61125581U (en) * 1985-01-28 1986-08-07

Also Published As

Publication number Publication date
JPS5838880B2 (en) 1983-08-25

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