IT1010742B - Apparecchiatura perfezionata per ottenere la protezione di specifi che posizioni della memoria prin cipale di un unita di elaborazione centrale - Google Patents

Apparecchiatura perfezionata per ottenere la protezione di specifi che posizioni della memoria prin cipale di un unita di elaborazione centrale

Info

Publication number
IT1010742B
IT1010742B IT12714/74A IT1271474A IT1010742B IT 1010742 B IT1010742 B IT 1010742B IT 12714/74 A IT12714/74 A IT 12714/74A IT 1271474 A IT1271474 A IT 1271474A IT 1010742 B IT1010742 B IT 1010742B
Authority
IT
Italy
Prior art keywords
processing unit
central processing
main memory
improved equipment
specific main
Prior art date
Application number
IT12714/74A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1010742B publication Critical patent/IT1010742B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
    • G06F12/1466—Key-lock mechanism

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
IT12714/74A 1973-04-30 1974-04-05 Apparecchiatura perfezionata per ottenere la protezione di specifi che posizioni della memoria prin cipale di un unita di elaborazione centrale IT1010742B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00356015A US3825903A (en) 1973-04-30 1973-04-30 Automatic switching of storage protect keys

Publications (1)

Publication Number Publication Date
IT1010742B true IT1010742B (it) 1977-01-20

Family

ID=23399751

Family Applications (1)

Application Number Title Priority Date Filing Date
IT12714/74A IT1010742B (it) 1973-04-30 1974-04-05 Apparecchiatura perfezionata per ottenere la protezione di specifi che posizioni della memoria prin cipale di un unita di elaborazione centrale

Country Status (7)

Country Link
US (1) US3825903A (it)
JP (1) JPS5524200B2 (it)
CA (1) CA1014672A (it)
DE (1) DE2414311C2 (it)
FR (1) FR2227579B1 (it)
GB (1) GB1437050A (it)
IT (1) IT1010742B (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000487A (en) * 1975-03-26 1976-12-28 Honeywell Information Systems, Inc. Steering code generating apparatus for use in an input/output processing system
US4162529A (en) * 1975-12-04 1979-07-24 Tokyo Shibaura Electric Co., Ltd. Interruption control system in a multiprocessing system
US4037214A (en) * 1976-04-30 1977-07-19 International Business Machines Corporation Key register controlled accessing system
DE2721599C2 (de) * 1976-05-17 1983-05-05 Sperry Corp., 10019 New York, N.Y. Schaltungsanordnung zur Verhinderung der Ausgabe von Datenworten aus einer EDV-Anlage ohne Sicherheitsverifizierung
US4244049A (en) * 1979-02-02 1981-01-06 Burroughs Corporation Method and apparatus for enhancing I/O transfers in a named data processing system
US4251885A (en) * 1979-03-09 1981-02-17 International Business Machines Corporation Checking programmed controller operation
US4293910A (en) * 1979-07-02 1981-10-06 International Business Machines Corporation Reconfigurable key-in-storage means for protecting interleaved main storage
US4439830A (en) * 1981-11-09 1984-03-27 Control Data Corporation Computer system key and lock protection mechanism
US4506329A (en) * 1982-03-08 1985-03-19 Pitney Bowes Inc. Non-volatile memory serial number lock for electronic postage meter
US4574350A (en) * 1982-05-19 1986-03-04 At&T Bell Laboratories Shared resource locking apparatus
US4525786A (en) * 1982-07-12 1985-06-25 Pitney Bowes Inc. Electronic postage meter having a one time actuable operating program to enable setting of critical accounting registers to predetermined values
JPS5958700A (ja) * 1982-09-29 1984-04-04 Fujitsu Ltd 記憶保護判定方式
FR2553541B1 (fr) * 1983-10-17 1992-02-28 Inst Nat Rech Inf Automat Dispositif et procede pour le stockage rapide et stable d'informations
JPS60159940A (ja) * 1984-01-30 1985-08-21 Fanuc Ltd プログラムの保護範囲変更方法
JPS6376034A (ja) * 1986-09-19 1988-04-06 Hitachi Ltd 多重アドレス空間制御方式
US5163096A (en) * 1991-06-06 1992-11-10 International Business Machines Corporation Storage protection utilizing public storage key control
US5467396A (en) * 1993-10-27 1995-11-14 The Titan Corporation Tamper-proof data storage
US5488702A (en) * 1994-04-26 1996-01-30 Unisys Corporation Data block check sequence generation and validation in a file cache system
US5852736A (en) * 1996-03-28 1998-12-22 Intel Corporation Method and apparatus for protecting data using lock values in a computer system
US5809546A (en) * 1996-05-23 1998-09-15 International Business Machines Corporation Method for managing I/O buffers in shared storage by structuring buffer table having entries including storage keys for controlling accesses to the buffers
US5724551A (en) * 1996-05-23 1998-03-03 International Business Machines Corporation Method for managing I/O buffers in shared storage by structuring buffer table having entries include storage keys for controlling accesses to the buffers
EP0825530A3 (en) * 1996-06-20 2004-06-02 Sharp Kabushiki Kaisha Computer apparatus having electrically rewritable nonvolatile memory, and nonvolatile semiconductor memory
US6807602B1 (en) * 2000-10-30 2004-10-19 Hewlett-Packard Development Company, L.P. System and method for mapping bus addresses to memory locations utilizing access keys and checksums
US9647838B2 (en) * 2013-01-25 2017-05-09 Ralph John Hilla Restructuring the computer and its association with the internet
US20150261693A1 (en) * 2014-03-14 2015-09-17 International Business Machines Corporation Dynamic storage key assignment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27251A (en) * 1860-02-21 Improvement in compositions formed of caoutchouc
US3328768A (en) * 1964-04-06 1967-06-27 Ibm Storage protection systems
US3377624A (en) * 1966-01-07 1968-04-09 Ibm Memory protection system
US3576544A (en) * 1968-10-18 1971-04-27 Ibm Storage protection system
DE2010640A1 (de) * 1969-05-19 1970-11-26 VEB Kombinat Robotron, χ 8l42 Radeberg Patentwesen, Ost-Berlin WPI3989O Schaltungsanordnung zur Durchführung des Speicherschutzes in Verbindung mit Kanalsteuereinheiten

Also Published As

Publication number Publication date
CA1014672A (en) 1977-07-26
FR2227579A1 (it) 1974-11-22
JPS5524200B2 (it) 1980-06-27
FR2227579B1 (it) 1976-06-25
JPS5011139A (it) 1975-02-05
DE2414311C2 (de) 1984-10-04
GB1437050A (en) 1976-05-26
US3825903A (en) 1974-07-23
DE2414311A1 (de) 1974-11-07

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