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JPS57143652A - Extension system for memory unit - Google Patents

Extension system for memory unit

Info

Publication number
JPS57143652A
JPS57143652A JP56028443A JP2844381A JPS57143652A JP S57143652 A JPS57143652 A JP S57143652A JP 56028443 A JP56028443 A JP 56028443A JP 2844381 A JP2844381 A JP 2844381A JP S57143652 A JPS57143652 A JP S57143652A
Authority
JP
Japan
Prior art keywords
memory
memory unit
units
address signals
address
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
JP56028443A
Other languages
Japanese (ja)
Inventor
Tokutaro Shinpo
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56028443A priority Critical patent/JPS57143652A/en
Publication of JPS57143652A publication Critical patent/JPS57143652A/en
Pending 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
    • G06F12/06—Addressing a physical block of locations, e.g. base addressing, module addressing, memory dedication

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microcomputers (AREA)

Abstract

PURPOSE:To assign continuous addresses to the file of a required memory capacity, by mounting memory units to the system in order independently of addresses. CONSTITUTION:In respect to a signal 2B out of address signals given from a central processing device CPU1 to an address bus 2, an address signal 2'B where the number of memory chips set in a memory unit 5' is subtracted by the memory unit 5' in respect to memory chip units A12-A14 is transmitted as address signals A12-1-A14-1. Thus, memory units 5'-n' are cascaded to process address signals 2B-2n, thereby accessing sequentially memory units 5'-n' which are installed in order from the central processing device CPU1.
JP56028443A 1981-03-02 1981-03-02 Extension system for memory unit Pending JPS57143652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56028443A JPS57143652A (en) 1981-03-02 1981-03-02 Extension system for memory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56028443A JPS57143652A (en) 1981-03-02 1981-03-02 Extension system for memory unit

Publications (1)

Publication Number Publication Date
JPS57143652A true JPS57143652A (en) 1982-09-04

Family

ID=12248816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56028443A Pending JPS57143652A (en) 1981-03-02 1981-03-02 Extension system for memory unit

Country Status (1)

Country Link
JP (1) JPS57143652A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60206686A (en) * 1984-03-30 1985-10-18 Pentel Kk electronic typewriter
JPS61127056A (en) * 1984-11-26 1986-06-14 Hitachi Ltd data processing equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60206686A (en) * 1984-03-30 1985-10-18 Pentel Kk electronic typewriter
JPS61127056A (en) * 1984-11-26 1986-06-14 Hitachi Ltd data processing equipment

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