JPS5593596A - Memory unit - Google Patents
Memory unitInfo
- Publication number
- JPS5593596A JPS5593596A JP23979A JP23979A JPS5593596A JP S5593596 A JPS5593596 A JP S5593596A JP 23979 A JP23979 A JP 23979A JP 23979 A JP23979 A JP 23979A JP S5593596 A JPS5593596 A JP S5593596A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- anomaly
- generated
- register
- information
- 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)
Abstract
PURPOSE: To make it possible to detect all-bit anomaly to prevent the generation of the secondary fault even in the one-parity bit system by providing a memory where an anomaly detecting bit is written.
CONSTITUTION: When write information is received, a parity bit is generated in 1, and information is stored in elements 5 and 6 through registers 2 and 3. Meanwhile, write register 7 for an anomaly detection bit is always set to "0". Then, information "0" is always written onto element 8 from register 7. In case that a fault to set the output of memory elements to all bit "1" is generated, the output of anomaly bit detection memory 8 becomes "1", and an anomaly signal is generated through register 11 and OR circuit 14.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23979A JPS5593596A (en) | 1979-01-08 | 1979-01-08 | Memory unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23979A JPS5593596A (en) | 1979-01-08 | 1979-01-08 | Memory unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5593596A true JPS5593596A (en) | 1980-07-16 |
Family
ID=11468410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23979A Pending JPS5593596A (en) | 1979-01-08 | 1979-01-08 | Memory unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5593596A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58167940U (en) * | 1982-04-30 | 1983-11-09 | 株式会社島津製作所 | Program data check device for complex arithmetic unit |
JPS5958696A (en) * | 1982-09-28 | 1984-04-04 | Fujitsu Ltd | Prom writer |
JPS6461838A (en) * | 1987-09-02 | 1989-03-08 | Nec Corp | Ic memory card |
-
1979
- 1979-01-08 JP JP23979A patent/JPS5593596A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58167940U (en) * | 1982-04-30 | 1983-11-09 | 株式会社島津製作所 | Program data check device for complex arithmetic unit |
JPS5958696A (en) * | 1982-09-28 | 1984-04-04 | Fujitsu Ltd | Prom writer |
JPS6461838A (en) * | 1987-09-02 | 1989-03-08 | Nec Corp | Ic memory card |
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