JPS57200985A - Buffer memory device - Google Patents

Buffer memory device

Info

Publication number
JPS57200985A
JPS57200985A JP56084053A JP8405381A JPS57200985A JP S57200985 A JPS57200985 A JP S57200985A JP 56084053 A JP56084053 A JP 56084053A JP 8405381 A JP8405381 A JP 8405381A JP S57200985 A JPS57200985 A JP S57200985A
Authority
JP
Japan
Prior art keywords
data
buffer memory
address
outputted
written
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
JP56084053A
Other languages
Japanese (ja)
Inventor
Tamotsu Noji
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56084053A priority Critical patent/JPS57200985A/en
Publication of JPS57200985A publication Critical patent/JPS57200985A/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
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0804—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with main memory updating

Landscapes

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

Abstract

PURPOSE:To execute processing at a high speed, by merging a partial write data and its original data in a buffer memory, when a data of a main memory of an address, whose partial write has been requested exists in the buffer memory, and executing its full write in the main memory. CONSTITUTION:When write of a data of a 4-byte unit has been requested from an operation processor 1, its data is set to an input register of a buffer memory 3 and a store register 4 of a main memory 5. Also, a byte to be written is outputted to lines 20a-20d from a buffer mark register 6. On the other hand, an address to be written is outputted to a line 23, and whether a data of this address exists in the buffer memory 3 or not is decided by an address array 9. As a result, in case when it exists, a new data is merged in the buffer memory 3, also ''1'' is outputted from a forcing circuit 28, lines 21a-21d are all set to ''1'', and the data in the buffer memory 3 is full-written in the main memory 5 through a line 32.
JP56084053A 1981-06-01 1981-06-01 Buffer memory device Pending JPS57200985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084053A JPS57200985A (en) 1981-06-01 1981-06-01 Buffer memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084053A JPS57200985A (en) 1981-06-01 1981-06-01 Buffer memory device

Publications (1)

Publication Number Publication Date
JPS57200985A true JPS57200985A (en) 1982-12-09

Family

ID=13819751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084053A Pending JPS57200985A (en) 1981-06-01 1981-06-01 Buffer memory device

Country Status (1)

Country Link
JP (1) JPS57200985A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61256455A (en) * 1985-05-06 1986-11-14 ウオング・ラボラトリ−ズ・インコ−ポレ−テツド Information processing system
JPS62212745A (en) * 1986-03-14 1987-09-18 Hitachi Ltd Data processor having buffer memory
JPH01316850A (en) * 1988-06-17 1989-12-21 Toshiba Corp Cache memory system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61256455A (en) * 1985-05-06 1986-11-14 ウオング・ラボラトリ−ズ・インコ−ポレ−テツド Information processing system
EP0201848A2 (en) * 1985-05-06 1986-11-20 Wang Laboratories Inc. Information processing system with enhanced instruction execution and support control
JPS62212745A (en) * 1986-03-14 1987-09-18 Hitachi Ltd Data processor having buffer memory
JPH01316850A (en) * 1988-06-17 1989-12-21 Toshiba Corp Cache memory system

Similar Documents

Publication Publication Date Title
ES8602285A1 (en) Buffer storage system.
JPS54122043A (en) Electronic computer
JPS57200985A (en) Buffer memory device
JPS53113446A (en) Information processor and its method
JPS5731049A (en) Information processing equipment
JPS57113144A (en) Stored program computer
JPS56134383A (en) Data processor
JPS5563453A (en) Memory system
JPS54128639A (en) Control system for cash memory
JPS54158831A (en) Data processor
JPS57150043A (en) Information processor
JPS5663652A (en) Information processing unit
JPS55105884A (en) Address conversion device
JPS5593580A (en) Buffer memory control system
JPS6476343A (en) Cache memory control system
JPS5697164A (en) Test and set and test and reset system
JPS57132229A (en) Direct memory access controller
JPS56110128A (en) Data transfer system
JPS55146551A (en) Information processing unit
JPS51142939A (en) Data processor
JPS5587362A (en) Buffer memory control system
JPS55121554A (en) Information processing system
JPS5463640A (en) Information processing system
JPS54129934A (en) Data access control system
JPS5576422A (en) Terminal unit