JPS5782268A - Virtual storage control system - Google Patents

Virtual storage control system

Info

Publication number
JPS5782268A
JPS5782268A JP55158313A JP15831380A JPS5782268A JP S5782268 A JPS5782268 A JP S5782268A JP 55158313 A JP55158313 A JP 55158313A JP 15831380 A JP15831380 A JP 15831380A JP S5782268 A JPS5782268 A JP S5782268A
Authority
JP
Japan
Prior art keywords
address
conversion
register
bit
circuit
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.)
Granted
Application number
JP55158313A
Other languages
Japanese (ja)
Other versions
JPS6034139B2 (en
Inventor
Yasuhiro Ishii
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 JP55158313A priority Critical patent/JPS6034139B2/en
Priority to KR1019810002843A priority patent/KR860000792B1/en
Publication of JPS5782268A publication Critical patent/JPS5782268A/en
Publication of JPS6034139B2 publication Critical patent/JPS6034139B2/en
Expired legal-status Critical Current

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
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/10—Address translation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To convert a logical address into an arbitrary real address by providing a conversion table between a conversion code designating an address space and a part of real address. CONSTITUTION:A virtual storage system being an address extension circuit of a microprocessor 1 consists of a register 4 having a code designating the address space and a conversion circuit 6 forming the upper rank bit of the extended address from the conversion code formed with the content of the upper rank 4-bit of the logical address of an address bus 2. A switching circuit 16 selects the data taking a part of the extended address as 0 from a register 13 when the conversion circuit 6 is impossible, and the real address of a main memory 9 is formed to a register 8. When the address conversion is made at the conversion circuit 6, the converted address constitutes the upper rank 8-bit of the extended address.
JP55158313A 1980-11-12 1980-11-12 virtual storage controller Expired JPS6034139B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55158313A JPS6034139B2 (en) 1980-11-12 1980-11-12 virtual storage controller
KR1019810002843A KR860000792B1 (en) 1980-11-12 1981-08-05 Virtual memory control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55158313A JPS6034139B2 (en) 1980-11-12 1980-11-12 virtual storage controller

Publications (2)

Publication Number Publication Date
JPS5782268A true JPS5782268A (en) 1982-05-22
JPS6034139B2 JPS6034139B2 (en) 1985-08-07

Family

ID=15668895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55158313A Expired JPS6034139B2 (en) 1980-11-12 1980-11-12 virtual storage controller

Country Status (2)

Country Link
JP (1) JPS6034139B2 (en)
KR (1) KR860000792B1 (en)

Also Published As

Publication number Publication date
KR830006763A (en) 1983-10-06
KR860000792B1 (en) 1986-06-25
JPS6034139B2 (en) 1985-08-07

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