JPS6482238A - Cache memory controller - Google Patents
Cache memory controllerInfo
- Publication number
- JPS6482238A JPS6482238A JP62238993A JP23899387A JPS6482238A JP S6482238 A JPS6482238 A JP S6482238A JP 62238993 A JP62238993 A JP 62238993A JP 23899387 A JP23899387 A JP 23899387A JP S6482238 A JPS6482238 A JP S6482238A
- Authority
- JP
- Japan
- Prior art keywords
- hit
- array
- data
- stored
- arrays
- 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
- Techniques For Improving Reliability Of Storages (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE:To secure the operation even for the occurrence of single trouble and to take a countermeasure against trouble without causing system down by providing plural dual address arrays or the like in which correspondence information between a data array and a main storage is stored. CONSTITUTION:A copy of a part of data in the main storage is stored in a data array 70, and correspondence information to the array 70 is stored in address arrays 30 and 31. A copy of contents of the array 30 is stored in copy address arrays 40 and 41. Hit detecting circuits 50 and 51 check arrays 30 and 31 and output '1' in case of hit, and hit detecting circuits 60 and 61 check arrays 40 and 41 and output '1' in case of hit. Hit is decided if AND between outputs of circuits 50 and 51 is '1' at the time of accessing the array 70, and hit is decided if OR between outputs of circuits 60 and 61 is '1' at the time of checking the occurrence of disaccord between data in the array 70 and data in the main storage. Thus, operation is secured even for the occurrence of single trouble and a countermeasure against trouble is taken without causing system down.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238993A JPS6482238A (en) | 1987-09-25 | 1987-09-25 | Cache memory controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238993A JPS6482238A (en) | 1987-09-25 | 1987-09-25 | Cache memory controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6482238A true JPS6482238A (en) | 1989-03-28 |
Family
ID=17038318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238993A Pending JPS6482238A (en) | 1987-09-25 | 1987-09-25 | Cache memory controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6482238A (en) |
-
1987
- 1987-09-25 JP JP62238993A patent/JPS6482238A/en active Pending
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