JPS5480050A - Data processor - Google Patents
Data processorInfo
- Publication number
- JPS5480050A JPS5480050A JP14706477A JP14706477A JPS5480050A JP S5480050 A JPS5480050 A JP S5480050A JP 14706477 A JP14706477 A JP 14706477A JP 14706477 A JP14706477 A JP 14706477A JP S5480050 A JPS5480050 A JP S5480050A
- Authority
- JP
- Japan
- Prior art keywords
- fault
- register
- memory means
- written
- data
- 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
Abstract
PURPOSE: To secure an automatic detection for the fault of the memory means as well as to enable the fault detection not only for a single bit but for the plural bits, by deciding whether a coincidence is obtained between the contents written into the comparing register and that written into the memory means via the comparison means.
CONSTITUTION: The following units are provided: at least one unit of memory means instruction register 3 to memorize the data; data comparing register 5 to which the same data is written simultaneously with the data writing into memory means 3; and comparator 9 which compares the contents written into register 5 with the contents written into means 3. Whether a coincidence is secured between the contents of register 5 and that of means 3 is decided by comparator 9. As a result, the fault of the memory means can be detected automatically, and furthermore not only a single-bit fault but the fault of plural bits can be detected.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14706477A JPS5480050A (en) | 1977-12-09 | 1977-12-09 | Data processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14706477A JPS5480050A (en) | 1977-12-09 | 1977-12-09 | Data processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5480050A true JPS5480050A (en) | 1979-06-26 |
Family
ID=15421662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14706477A Pending JPS5480050A (en) | 1977-12-09 | 1977-12-09 | Data processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5480050A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204645A (en) * | 1981-06-10 | 1982-12-15 | Nec Corp | Receiver for individual selective call |
JPS58118096A (en) * | 1981-12-29 | 1983-07-13 | Fujitsu Ltd | Memory checking circuit |
JPS63230370A (en) * | 1987-03-19 | 1988-09-26 | Fujitsu Ltd | Printer device |
-
1977
- 1977-12-09 JP JP14706477A patent/JPS5480050A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204645A (en) * | 1981-06-10 | 1982-12-15 | Nec Corp | Receiver for individual selective call |
JPS6324574B2 (en) * | 1981-06-10 | 1988-05-21 | Nippon Electric Co | |
JPS58118096A (en) * | 1981-12-29 | 1983-07-13 | Fujitsu Ltd | Memory checking circuit |
JPS6230661B2 (en) * | 1981-12-29 | 1987-07-03 | Fujitsu Ltd | |
JPS63230370A (en) * | 1987-03-19 | 1988-09-26 | Fujitsu Ltd | Printer device |
JPH0552794B2 (en) * | 1987-03-19 | 1993-08-06 | Fujitsu Ltd |
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