JPS559228A - Memory request control system - Google Patents

Memory request control system

Info

Publication number
JPS559228A
JPS559228A JP8029378A JP8029378A JPS559228A JP S559228 A JPS559228 A JP S559228A JP 8029378 A JP8029378 A JP 8029378A JP 8029378 A JP8029378 A JP 8029378A JP S559228 A JPS559228 A JP S559228A
Authority
JP
Japan
Prior art keywords
address
main memory
comparison
fetch
buffer memory
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
JP8029378A
Other languages
Japanese (ja)
Other versions
JPS5742916B2 (en
Inventor
Tsutomu Sumimoto
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 JP8029378A priority Critical patent/JPS559228A/en
Publication of JPS559228A publication Critical patent/JPS559228A/en
Publication of JPS5742916B2 publication Critical patent/JPS5742916B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the uncoincidence of the data between the main memory and the buffer memory, by performing the comparison between the fetch address and the storage address in the main memory address stack and the comparison between the fetch addresses.
CONSTITUTION: When the fetch or storage request from the operation processing unit etc. is present, one of the latches 100 to 107 corresponding is made to "1", and address is set to one of the address registers 110 to 117. The buffer memory control circuit 130 accesses the buffer memory with the said address or, transfers the said address to the main memory address stacks 160 to 164. The main memory control unit 190 receives the result of comparison between addresses with the comparators 180 to 185, and if the access request to the same block enters the main memory address stack, optimum processing is efficiently made.
COPYRIGHT: (C)1980,JPO&Japio
JP8029378A 1978-07-01 1978-07-01 Memory request control system Granted JPS559228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8029378A JPS559228A (en) 1978-07-01 1978-07-01 Memory request control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8029378A JPS559228A (en) 1978-07-01 1978-07-01 Memory request control system

Publications (2)

Publication Number Publication Date
JPS559228A true JPS559228A (en) 1980-01-23
JPS5742916B2 JPS5742916B2 (en) 1982-09-11

Family

ID=13714216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8029378A Granted JPS559228A (en) 1978-07-01 1978-07-01 Memory request control system

Country Status (1)

Country Link
JP (1) JPS559228A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602550U (en) * 1983-06-16 1985-01-10 株式会社竹中工務店 lifeline
JPS63111166U (en) * 1987-01-10 1988-07-16
JPH01126260U (en) * 1988-02-23 1989-08-29
JPH0282354U (en) * 1988-12-15 1990-06-26
JPH02141466U (en) * 1989-05-02 1990-11-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5099046A (en) * 1973-12-28 1975-08-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5099046A (en) * 1973-12-28 1975-08-06

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602550U (en) * 1983-06-16 1985-01-10 株式会社竹中工務店 lifeline
JPS63111166U (en) * 1987-01-10 1988-07-16
JPH01126260U (en) * 1988-02-23 1989-08-29
JPH0282354U (en) * 1988-12-15 1990-06-26
JPH02141466U (en) * 1989-05-02 1990-11-28

Also Published As

Publication number Publication date
JPS5742916B2 (en) 1982-09-11

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