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JPS5412643A - Main memory protective device - Google Patents

Main memory protective device

Info

Publication number
JPS5412643A
JPS5412643A JP7837077A JP7837077A JPS5412643A JP S5412643 A JPS5412643 A JP S5412643A JP 7837077 A JP7837077 A JP 7837077A JP 7837077 A JP7837077 A JP 7837077A JP S5412643 A JPS5412643 A JP S5412643A
Authority
JP
Japan
Prior art keywords
main memory
protective device
memory protective
writing
inhibition
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
JP7837077A
Other languages
Japanese (ja)
Inventor
Kenji Hayashi
Hiroo Miyadera
Isao Oonishi
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 JP7837077A priority Critical patent/JPS5412643A/en
Publication of JPS5412643A publication Critical patent/JPS5412643A/en
Pending legal-status Critical Current

Links

Landscapes

  • Storage Device Security (AREA)

Abstract

PURPOSE: To secure the writing inhibition to the region containing the main memory regardless of the state of the key, by providing the writing control bit to the region to designate the inhibition of the writing.
COPYRIGHT: (C)1979,JPO&Japio
JP7837077A 1977-06-30 1977-06-30 Main memory protective device Pending JPS5412643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7837077A JPS5412643A (en) 1977-06-30 1977-06-30 Main memory protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7837077A JPS5412643A (en) 1977-06-30 1977-06-30 Main memory protective device

Publications (1)

Publication Number Publication Date
JPS5412643A true JPS5412643A (en) 1979-01-30

Family

ID=13660111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7837077A Pending JPS5412643A (en) 1977-06-30 1977-06-30 Main memory protective device

Country Status (1)

Country Link
JP (1) JPS5412643A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679348A (en) * 1979-11-30 1981-06-29 Hitachi Ltd Memory protective system
JPS5699945U (en) * 1979-12-27 1981-08-06
JPS60120451A (en) * 1983-12-05 1985-06-27 Fujitsu Ltd Word-by-word memory protection
JPS60129860A (en) * 1983-12-19 1985-07-11 Hitachi Ltd Detection system for addressing exception
JPS6111382A (en) * 1984-06-22 1986-01-18 財団法人　電力中央研究所 Method of storing petroleum
JPS628987U (en) * 1985-06-29 1987-01-20
JPH09138733A (en) * 1995-11-14 1997-05-27 Hokkaido Nippon Denki Software Kk Protective system for magnetic disk device
WO2002077826A1 (en) * 2001-03-22 2002-10-03 Sony Computer Entertainment Inc. Memory protection system and method for computer architecture for broadband networks
US6809734B2 (en) 2001-03-22 2004-10-26 Sony Computer Entertainment Inc. Resource dedication system and method for a computer architecture for broadband networks
US6826662B2 (en) 2001-03-22 2004-11-30 Sony Computer Entertainment Inc. System and method for data synchronization for a computer architecture for broadband networks
US7093104B2 (en) 2001-03-22 2006-08-15 Sony Computer Entertainment Inc. Processing modules for computer architecture for broadband networks
US7231500B2 (en) 2001-03-22 2007-06-12 Sony Computer Entertainment Inc. External data interface in a computer architecture for broadband networks
US7233998B2 (en) 2001-03-22 2007-06-19 Sony Computer Entertainment Inc. Computer architecture and software cells for broadband networks

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679348A (en) * 1979-11-30 1981-06-29 Hitachi Ltd Memory protective system
JPS6229826B2 (en) * 1979-11-30 1987-06-29 Hitachi Ltd
JPS5699945U (en) * 1979-12-27 1981-08-06
JPS60120451A (en) * 1983-12-05 1985-06-27 Fujitsu Ltd Word-by-word memory protection
JPS60129860A (en) * 1983-12-19 1985-07-11 Hitachi Ltd Detection system for addressing exception
JPS6111382A (en) * 1984-06-22 1986-01-18 財団法人　電力中央研究所 Method of storing petroleum
JPS628987U (en) * 1985-06-29 1987-01-20
JPH09138733A (en) * 1995-11-14 1997-05-27 Hokkaido Nippon Denki Software Kk Protective system for magnetic disk device
WO2002077826A1 (en) * 2001-03-22 2002-10-03 Sony Computer Entertainment Inc. Memory protection system and method for computer architecture for broadband networks
US6526491B2 (en) 2001-03-22 2003-02-25 Sony Corporation Entertainment Inc. Memory protection system and method for computer architecture for broadband networks
US6809734B2 (en) 2001-03-22 2004-10-26 Sony Computer Entertainment Inc. Resource dedication system and method for a computer architecture for broadband networks
US6826662B2 (en) 2001-03-22 2004-11-30 Sony Computer Entertainment Inc. System and method for data synchronization for a computer architecture for broadband networks
US7093104B2 (en) 2001-03-22 2006-08-15 Sony Computer Entertainment Inc. Processing modules for computer architecture for broadband networks
US7139882B2 (en) 2001-03-22 2006-11-21 Sony Computer Entertainment Inc. Memory protection system and method for computer architecture for broadband networks
US7231500B2 (en) 2001-03-22 2007-06-12 Sony Computer Entertainment Inc. External data interface in a computer architecture for broadband networks
US7233998B2 (en) 2001-03-22 2007-06-19 Sony Computer Entertainment Inc. Computer architecture and software cells for broadband networks
US7457939B2 (en) 2001-03-22 2008-11-25 Sony Computer Entertainment Inc. Processing system with dedicated local memories and busy identification
US7720982B2 (en) 2001-03-22 2010-05-18 Sony Computer Entertainment Inc. Computer architecture and software cells for broadband networks

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