JPS5558873A - Data processor having common memory unit - Google Patents

Data processor having common memory unit

Info

Publication number
JPS5558873A
JPS5558873A JP13203078A JP13203078A JPS5558873A JP S5558873 A JPS5558873 A JP S5558873A JP 13203078 A JP13203078 A JP 13203078A JP 13203078 A JP13203078 A JP 13203078A JP S5558873 A JPS5558873 A JP S5558873A
Authority
JP
Japan
Prior art keywords
memory
access
memory unit
common
address information
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
JP13203078A
Other languages
Japanese (ja)
Inventor
Fujio Wajima
Tetsuji Kuhara
Shuhei Yasuda
Hisashi Nishimoto
Tsuguo Ueki
Toshihiro Sakai
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.)
Fujitsu Ltd
Usac Electronic Ind Co Ltd
Original Assignee
Fujitsu Ltd
Usac Electronic Ind 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 Fujitsu Ltd, Usac Electronic Ind Co Ltd filed Critical Fujitsu Ltd
Priority to JP13203078A priority Critical patent/JPS5558873A/en
Publication of JPS5558873A publication Critical patent/JPS5558873A/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
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/10—Address translation

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 reduce the access time by reducing the pocessing of addition prossibly, through the reduction in the access circuit with the adoption of common memory unit. CONSTITUTION:The CPU1 executes the processing while accessing to the control memory 4 storing microporgram, and when access is made to the main memory 2, the address conversion table 5 is indexed and real address information is picked up to perform access. In this case, the control memory 4' and the main memory 2' are stored in the common memory unit 6 prepared in the same physical space to perform access to the memory with the common access circuit 7. Further, the table 5' converting the address information to the memory made by the original request into the real address information corresponding to the address location on the unit 6 is provided to perform access to the memories 4' and 2' through the use of result indexed by the table 5'.
JP13203078A 1978-10-26 1978-10-26 Data processor having common memory unit Pending JPS5558873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13203078A JPS5558873A (en) 1978-10-26 1978-10-26 Data processor having common memory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13203078A JPS5558873A (en) 1978-10-26 1978-10-26 Data processor having common memory unit

Publications (1)

Publication Number Publication Date
JPS5558873A true JPS5558873A (en) 1980-05-01

Family

ID=15071848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13203078A Pending JPS5558873A (en) 1978-10-26 1978-10-26 Data processor having common memory unit

Country Status (1)

Country Link
JP (1) JPS5558873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866156A (en) * 1981-07-02 1983-04-20 テキサス・インスツルメンツ・インコ−ポレイテツド Microcomputer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092059A (en) * 1973-12-13 1975-07-23
JPS50104841A (en) * 1974-01-21 1975-08-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092059A (en) * 1973-12-13 1975-07-23
JPS50104841A (en) * 1974-01-21 1975-08-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866156A (en) * 1981-07-02 1983-04-20 テキサス・インスツルメンツ・インコ−ポレイテツド Microcomputer
JPH0456340B2 (en) * 1981-07-02 1992-09-08 Texas Instruments Inc

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