JPS522144A - Memory protecting device - Google Patents

Memory protecting device

Info

Publication number
JPS522144A
JPS522144A JP50076651A JP7665175A JPS522144A JP S522144 A JPS522144 A JP S522144A JP 50076651 A JP50076651 A JP 50076651A JP 7665175 A JP7665175 A JP 7665175A JP S522144 A JPS522144 A JP S522144A
Authority
JP
Japan
Prior art keywords
revised
protecting device
address
memory protecting
memory
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
JP50076651A
Other languages
English (en)
Inventor
Tomoharu Maehara
Kazukiyo Takano
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 JP50076651A priority Critical patent/JPS522144A/ja
Publication of JPS522144A publication Critical patent/JPS522144A/ja
Pending legal-status Critical Current

Links

JP50076651A 1975-06-24 1975-06-24 Memory protecting device Pending JPS522144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50076651A JPS522144A (en) 1975-06-24 1975-06-24 Memory protecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50076651A JPS522144A (en) 1975-06-24 1975-06-24 Memory protecting device

Publications (1)

Publication Number Publication Date
JPS522144A true JPS522144A (en) 1977-01-08

Family

ID=13611295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50076651A Pending JPS522144A (en) 1975-06-24 1975-06-24 Memory protecting device

Country Status (1)

Country Link
JP (1) JPS522144A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187751A (en) * 1981-05-13 1982-11-18 Hitachi Ltd Vehicle engine controller
JPS58224499A (ja) * 1982-06-22 1983-12-26 Fujitsu Ten Ltd デ−タ保持ｒａｍのデ−タ内容保護方法
JPS5958699A (ja) * 1982-09-27 1984-04-04 Meidensha Electric Mfg Co Ltd 不揮発性ｒａｍのデ−タ保持方式
JPS62107329A (ja) * 1985-11-05 1987-05-18 Toshiba Corp 文書作成装置
JPS63503250A (ja) * 1986-05-20 1988-11-24 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング データの記憶法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187751A (en) * 1981-05-13 1982-11-18 Hitachi Ltd Vehicle engine controller
JPS58224499A (ja) * 1982-06-22 1983-12-26 Fujitsu Ten Ltd デ−タ保持ｒａｍのデ−タ内容保護方法
JPH0217817B2 (ja) * 1982-06-22 1990-04-23 Fujitsu Ten Ltd
JPS5958699A (ja) * 1982-09-27 1984-04-04 Meidensha Electric Mfg Co Ltd 不揮発性ｒａｍのデ−タ保持方式
JPS62107329A (ja) * 1985-11-05 1987-05-18 Toshiba Corp 文書作成装置
JPS63503250A (ja) * 1986-05-20 1988-11-24 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング データの記憶法

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