CA1197020A - Memory management unit for digital computer - Google Patents

Memory management unit for digital computer

Info

Publication number
CA1197020A
CA1197020A CA000436306A CA436306A CA1197020A CA 1197020 A CA1197020 A CA 1197020A CA 000436306 A CA000436306 A CA 000436306A CA 436306 A CA436306 A CA 436306A CA 1197020 A CA1197020 A CA 1197020A
Authority
CA
Canada
Prior art keywords
mmu
memory
main memory
cpu
sections
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.)
Expired
Application number
CA000436306A
Other languages
English (en)
French (fr)
Inventor
Paul A. Baker
Gary L. Marten
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.)
Apple Inc
Original Assignee
Apple Computer Inc
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 Apple Computer Inc filed Critical Apple Computer Inc
Application granted granted Critical
Publication of CA1197020A publication Critical patent/CA1197020A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/0292—User address space allocation, e.g. contiguous or non contiguous base addressing using tables or multilevel address translation means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F12/1416—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights
    • G06F12/145—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being virtual, e.g. for virtual blocks or segments before a translation mechanism

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Storage Device Security (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Memory System (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
CA000436306A 1982-09-29 1983-09-08 Memory management unit for digital computer Expired CA1197020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42686982A 1982-09-29 1982-09-29
US426,869 1982-09-29

Publications (1)

Publication Number Publication Date
CA1197020A true CA1197020A (en) 1985-11-19

Family

ID=23692542

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000436306A Expired CA1197020A (en) 1982-09-29 1983-09-08 Memory management unit for digital computer

Country Status (12)

Country Link
JP (1) JPS5979367A (enrdf_load_stackoverflow)
AU (1) AU559067B2 (enrdf_load_stackoverflow)
CA (1) CA1197020A (enrdf_load_stackoverflow)
DE (1) DE3333894A1 (enrdf_load_stackoverflow)
FR (1) FR2533736A1 (enrdf_load_stackoverflow)
GB (1) GB2127994B (enrdf_load_stackoverflow)
IL (1) IL69784A (enrdf_load_stackoverflow)
IN (1) IN161125B (enrdf_load_stackoverflow)
IT (1) IT1221741B (enrdf_load_stackoverflow)
NZ (1) NZ205486A (enrdf_load_stackoverflow)
SE (1) SE464052B (enrdf_load_stackoverflow)
ZA (1) ZA836384B (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176918B (en) * 1985-06-13 1989-11-01 Intel Corp Memory management for microprocessor system
US4972338A (en) * 1985-06-13 1990-11-20 Intel Corporation Memory management for microprocessor system
JP2522248B2 (ja) * 1986-05-24 1996-08-07 株式会社日立製作所 記憶装置アクセス機構
AU595378B2 (en) * 1986-08-22 1990-03-29 Commonwealth Scientific And Industrial Research Organisation Content-addressable memory system with active memory circuit
DE3788183D1 (de) * 1986-09-25 1993-12-23 Siemens Ag Adressenverwaltungseinheit einer Multiprozessor-Zentralsteuereinheit eines Nachrichten-Vermittlungssystems.
FR2618578A1 (fr) * 1987-07-21 1989-01-27 Digilog Systeme informatique modulaire embarque a memoire virtuelle integree
DE3901457A1 (de) * 1989-01-19 1990-08-02 Strahlen Umweltforsch Gmbh Verfahren zur adressbereichsueberwachung bei datenverarbeitungsgeraeten in echtzeit
US5617554A (en) * 1992-02-10 1997-04-01 Intel Corporation Physical address size selection and page size selection in an address translator
US5752275A (en) * 1995-03-31 1998-05-12 Intel Corporation Translation look-aside buffer including a single page size translation unit
JP2005100262A (ja) 2003-09-26 2005-04-14 Seiko Epson Corp メモリ管理装置およびメモリ管理プログラム、並びにメモリ管理方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5315779B2 (enrdf_load_stackoverflow) * 1973-08-16 1978-05-27
GB1498116A (en) * 1974-04-18 1978-01-18 Honeywell Inf Systems Data processing systems
US3938100A (en) * 1974-06-07 1976-02-10 Control Data Corporation Virtual addressing apparatus for addressing the memory of a computer utilizing associative addressing techniques
US3999052A (en) * 1975-06-18 1976-12-21 International Business Machines Corporation Upper bounds address checking system for providing storage protection for a digital data processor
US4037215A (en) * 1976-04-30 1977-07-19 International Business Machines Corporation Key controlled address relocation translation system
GB1585960A (en) * 1976-07-30 1981-03-11 Plessey Co Ltd Information flow security mechanisms for data processing systems
US4093986A (en) * 1976-12-27 1978-06-06 International Business Machines Corporation Address translation with storage protection
JPS5436144A (en) * 1977-08-26 1979-03-16 Toshiba Corp Address conversion unit
DE2837241C2 (de) * 1978-08-25 1982-05-06 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum Sichern von Daten gegen unberechtigten Zugriff
US4366537A (en) * 1980-05-23 1982-12-28 International Business Machines Corp. Authorization mechanism for transfer of program control or data between different address spaces having different storage protect keys

Also Published As

Publication number Publication date
AU1894083A (en) 1984-04-05
GB8316129D0 (en) 1983-07-20
DE3333894C2 (enrdf_load_stackoverflow) 1993-04-01
IT1221741B (it) 1990-07-12
IL69784A0 (en) 1983-12-30
SE8305290D0 (sv) 1983-09-29
IN161125B (enrdf_load_stackoverflow) 1987-10-10
AU559067B2 (en) 1987-02-19
NZ205486A (en) 1987-02-20
IT8322960A0 (it) 1983-09-22
SE464052B (sv) 1991-02-25
JPS5979367A (ja) 1984-05-08
ZA836384B (en) 1984-05-30
SE8305290L (sv) 1984-03-30
DE3333894A1 (de) 1984-03-29
GB2127994A (en) 1984-04-18
GB2127994B (en) 1987-01-21
IL69784A (en) 1986-12-31
FR2533736A1 (fr) 1984-03-30

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry