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JPS5420624A - Memory access device - Google Patents

Memory access device

Info

Publication number
JPS5420624A
JPS5420624A JP8544477A JP8544477A JPS5420624A JP S5420624 A JPS5420624 A JP S5420624A JP 8544477 A JP8544477 A JP 8544477A JP 8544477 A JP8544477 A JP 8544477A JP S5420624 A JPS5420624 A JP S5420624A
Authority
JP
Japan
Prior art keywords
access device
memory access
access
memory
presets
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
JP8544477A
Other languages
Japanese (ja)
Inventor
Takehiro Kaga
Soichi Sakurai
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8544477A priority Critical patent/JPS5420624A/en
Publication of JPS5420624A publication Critical patent/JPS5420624A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C8/00—Arrangements for selecting an address in a digital store
    • G11C8/20—Address safety or protection circuits, i.e. arrangements for preventing unauthorized or accidental access

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Storage Device Security (AREA)

Abstract

PURPOSE:To detect and correct improper access to a memory by providing a method which presets the number of a program attaining access originally.
JP8544477A 1977-07-15 1977-07-15 Memory access device Pending JPS5420624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8544477A JPS5420624A (en) 1977-07-15 1977-07-15 Memory access device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8544477A JPS5420624A (en) 1977-07-15 1977-07-15 Memory access device

Publications (1)

Publication Number Publication Date
JPS5420624A true JPS5420624A (en) 1979-02-16

Family

ID=13859035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8544477A Pending JPS5420624A (en) 1977-07-15 1977-07-15 Memory access device

Country Status (1)

Country Link
JP (1) JPS5420624A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142647A (en) * 1983-02-04 1984-08-15 Nec Corp Information processing device
WO1985003370A1 (en) * 1984-01-30 1985-08-01 Fanuc Ltd Method of altering program protecting range
JPH0314053A (en) * 1989-06-12 1991-01-22 Toshiba Corp Portable medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142647A (en) * 1983-02-04 1984-08-15 Nec Corp Information processing device
JPH0526213B2 (en) * 1983-02-04 1993-04-15 Nippon Electric Co
WO1985003370A1 (en) * 1984-01-30 1985-08-01 Fanuc Ltd Method of altering program protecting range
JPH0314053A (en) * 1989-06-12 1991-01-22 Toshiba Corp Portable medium

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