JPS5619597A - Diagnostic and processing system for memory unit - Google Patents
Diagnostic and processing system for memory unitInfo
- Publication number
- JPS5619597A JPS5619597A JP9451379A JP9451379A JPS5619597A JP S5619597 A JPS5619597 A JP S5619597A JP 9451379 A JP9451379 A JP 9451379A JP 9451379 A JP9451379 A JP 9451379A JP S5619597 A JPS5619597 A JP S5619597A
- Authority
- JP
- Japan
- Prior art keywords
- register
- error
- memory
- information
- memory unit
- 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
Links
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
- Debugging And Monitoring (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE: To enable to discriminate the failed bit location of the memory mounted on the package, by comparison of correct data read out from the memory in other nondefective state, in bit correspondence.
CONSTITUTION: When an error is detected at the parity error detection circuit 13, the error data is stored to the register 10, the address information is register 11 and the access control information is to the register 12 respectively. Further, the error byte location information is stored in the register 14 and the main memory unit 16 being nondefective memory is accessed with the retrial control 15 and correct data are set to the register 9. Next, each information is respectively fed to the scan out data storage section and the content of the register 9 and that of the register 10 are compared at the bit correspondence comparison section 19. Thus, the failed bit location can be judged.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54094513A JPS607821B2 (en) | 1979-07-25 | 1979-07-25 | Storage device diagnostic processing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54094513A JPS607821B2 (en) | 1979-07-25 | 1979-07-25 | Storage device diagnostic processing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619597A true JPS5619597A (en) | 1981-02-24 |
JPS607821B2 JPS607821B2 (en) | 1985-02-27 |
Family
ID=14112397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54094513A Expired JPS607821B2 (en) | 1979-07-25 | 1979-07-25 | Storage device diagnostic processing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607821B2 (en) |
-
1979
- 1979-07-25 JP JP54094513A patent/JPS607821B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS607821B2 (en) | 1985-02-27 |
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