JPS57164484A - Replace system - Google Patents

Replace system

Info

Publication number
JPS57164484A
JPS57164484A JP56048627A JP4862781A JPS57164484A JP S57164484 A JPS57164484 A JP S57164484A JP 56048627 A JP56048627 A JP 56048627A JP 4862781 A JP4862781 A JP 4862781A JP S57164484 A JPS57164484 A JP S57164484A
Authority
JP
Japan
Prior art keywords
circuit
replace
memory
comparator
predicted
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
JP56048627A
Other languages
Japanese (ja)
Inventor
Akiyoshi Kajiyama
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP56048627A priority Critical patent/JPS57164484A/en
Publication of JPS57164484A publication Critical patent/JPS57164484A/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

Abstract

PURPOSE:To reduce quantity of replace information and to simplify the replace processing circuit, by deciding necessity of changing block numbers to be replaced of the buffer memory by comparing them with reference block numbers after they are predicted and stored. CONSTITUTION:A block number which is to be replaced at the next loading from a main storage device 1 to a buffer memory 2 and which is considered to be the oldest in the memory 2, is decided as a replace number, and this is stored in a replace storing circuit 5. Under this condition, a referred data block number of the memory 2 is impressed upon a comparator 5 and compared with the information read out from the circuit 5. When they coincide with each other, a coincidence signal from a comparator 4 is outputted to a predicting circuit 6 and the circuit 6 is started. When, for example, the circuit 6 is (+n) system, the data block number of a place where the (n) is added to block numbers separated by an array distance of (n), is predicted as the replace number and writing into the circuit 5 is performed.
JP56048627A 1981-03-31 1981-03-31 Replace system Pending JPS57164484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56048627A JPS57164484A (en) 1981-03-31 1981-03-31 Replace system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56048627A JPS57164484A (en) 1981-03-31 1981-03-31 Replace system

Publications (1)

Publication Number Publication Date
JPS57164484A true JPS57164484A (en) 1982-10-09

Family

ID=12808624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56048627A Pending JPS57164484A (en) 1981-03-31 1981-03-31 Replace system

Country Status (1)

Country Link
JP (1) JPS57164484A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210639A (en) * 1975-07-09 1977-01-27 Int Computers Ltd Data accumulator
JPS5370640A (en) * 1976-12-06 1978-06-23 Nec Corp Information processing unit having precedence control functions
JPS543437A (en) * 1977-06-09 1979-01-11 Nec Corp Cash memory control system
JPS55129847A (en) * 1979-03-30 1980-10-08 Panafacom Ltd Access system of memory unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210639A (en) * 1975-07-09 1977-01-27 Int Computers Ltd Data accumulator
JPS5370640A (en) * 1976-12-06 1978-06-23 Nec Corp Information processing unit having precedence control functions
JPS543437A (en) * 1977-06-09 1979-01-11 Nec Corp Cash memory control system
JPS55129847A (en) * 1979-03-30 1980-10-08 Panafacom Ltd Access system of memory unit

Similar Documents

Publication Publication Date Title
US5295255A (en) Method and apparatus for programming a solid state processor with overleaved array memory modules
US3422401A (en) Electric data handling apparatus
GB1494365A (en) Apparatus for selectively clearing a cache store in a processor having segmentation and paging
ES457764A1 (en) Memory access control system
GB1492260A (en) Data processing systems
GB990824A (en) Selection system
US3662348A (en) Message assembly and response system
KR840001349A (en) Error Handling System for Buffer Memory
ES8609771A1 (en) Tag control circuit for buffer storage.
JPS6476133A (en) System for recording information recording medium
JPS57164484A (en) Replace system
WO1990016025A3 (en) Data store connection
JPS57203298A (en) Semiconductor storage device
GB1524109A (en) System for information transfer between peripheral circuits and a central unit
ES8106062A1 (en) Digital information transfer system and interface.
JPS5750378A (en) Control system of data processor
SU608161A1 (en) Information processing arrangement
JPS5798051A (en) Memory system of scan in/out data
SU1259241A1 (en) Information input device
SU1273936A2 (en) Multichannel information input device
SU1481854A1 (en) Dynamic memory
JPS55146556A (en) Data collating system
SU1534457A1 (en) Device for computing codes
RU2128855C1 (en) Device for information sorting
SU1022221A1 (en) Buffer storage