JPS53139938A - Memory protection method - Google Patents

Memory protection method

Info

Publication number
JPS53139938A
JPS53139938A JP5426477A JP5426477A JPS53139938A JP S53139938 A JPS53139938 A JP S53139938A JP 5426477 A JP5426477 A JP 5426477A JP 5426477 A JP5426477 A JP 5426477A JP S53139938 A JPS53139938 A JP S53139938A
Authority
JP
Japan
Prior art keywords
protection method
memory protection
permissible
destroyed
write
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
JP5426477A
Other languages
Japanese (ja)
Inventor
Kazumasa Yamanaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5426477A priority Critical patent/JPS53139938A/en
Publication of JPS53139938A publication Critical patent/JPS53139938A/en
Pending legal-status Critical Current

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  • Storage Device Security (AREA)

Abstract

PURPOSE:To prevent the existing information from being destroyed with unnecessary memory readout and write-in, by discriminating whether the access is permissible or not with the address check unit.
JP5426477A 1977-05-13 1977-05-13 Memory protection method Pending JPS53139938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5426477A JPS53139938A (en) 1977-05-13 1977-05-13 Memory protection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5426477A JPS53139938A (en) 1977-05-13 1977-05-13 Memory protection method

Publications (1)

Publication Number Publication Date
JPS53139938A true JPS53139938A (en) 1978-12-06

Family

ID=12965698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5426477A Pending JPS53139938A (en) 1977-05-13 1977-05-13 Memory protection method

Country Status (1)

Country Link
JP (1) JPS53139938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53166825U (en) * 1977-06-03 1978-12-27
JPS59154700A (en) * 1983-02-23 1984-09-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Data processing system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4973038A (en) * 1972-11-14 1974-07-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4973038A (en) * 1972-11-14 1974-07-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53166825U (en) * 1977-06-03 1978-12-27
JPS59154700A (en) * 1983-02-23 1984-09-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Data processing system

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