JPS5680868A - Buffer memory device - Google Patents
Buffer memory deviceInfo
- Publication number
- JPS5680868A JPS5680868A JP15766679A JP15766679A JPS5680868A JP S5680868 A JPS5680868 A JP S5680868A JP 15766679 A JP15766679 A JP 15766679A JP 15766679 A JP15766679 A JP 15766679A JP S5680868 A JPS5680868 A JP S5680868A
- Authority
- JP
- Japan
- Prior art keywords
- data
- memory device
- address
- main memory
- storing
- 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
Links
Landscapes
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE: To make unnecessary the control of dissidence between the copy of the data of te main memory device stored and the main memory device storing data by determining whether the data is written or not in accordance with tag constituting the reading information from the main memory device.
CONSTITUTION: The request address from the central processing unit CPU1, is stored in the address register 11 of the buffer memory device CHE, it is compared with the address of the address storing memory 12, and when they are coincided with each other, through a comparator 13, a buffer memory control 14, a data storing memory 15, a multiplexer 16, a data register, etc., the data is fed to the device CPU1. When the coincidence signal is not obtained by the comparator 13, the control part 14 sends out the address and makes access to the main memory device. Thereby, when the writing judging tag 1 constructing the information read is set, the control part 14 does not carry out the writing of the read address and the data 2 to a storing memory 15. Accordingly, the control of dissidence between the copy of the data of the main memory device and the main memory device storing data becomes unnecessary.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15766679A JPS5680868A (en) | 1979-12-05 | 1979-12-05 | Buffer memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15766679A JPS5680868A (en) | 1979-12-05 | 1979-12-05 | Buffer memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5680868A true JPS5680868A (en) | 1981-07-02 |
Family
ID=15654720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15766679A Pending JPS5680868A (en) | 1979-12-05 | 1979-12-05 | Buffer memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5680868A (en) |
-
1979
- 1979-12-05 JP JP15766679A patent/JPS5680868A/en active Pending
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