JPS6428738A - Diagnostic device for error detection and correction circuit - Google Patents
Diagnostic device for error detection and correction circuitInfo
- Publication number
- JPS6428738A JPS6428738A JP62182220A JP18222087A JPS6428738A JP S6428738 A JPS6428738 A JP S6428738A JP 62182220 A JP62182220 A JP 62182220A JP 18222087 A JP18222087 A JP 18222087A JP S6428738 A JPS6428738 A JP S6428738A
- Authority
- JP
- Japan
- Prior art keywords
- diagnostic
- circuit
- result
- address
- signal
- 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
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE:To reduce the diagnostic execution time by setting a syndrome pattern and a data pattern designation signal to a diagnostic address so as to reduce the number of steps of a diagnostic program. CONSTITUTION:A diagnostic register 1 sets the diagnostic state of an error detection and correction circuit 6. An address signal from the diagnostic device is inputted to a diagnostic circuit 3 via an address register 2 and the output of the circuit 3 is selected by a selector 4 in place of the read data and check bit from the memory 5 in response to the setting result to of the register 1 and the result is sent to the circuit 6. The circuit 6 checks the diagnostic data selected by the selector according to the prescribed error correction code and sends the result to a comparator circuit 7. Thus, the syndrome information being the result of check and the syndrome pattern designated by the diagnostic address are compared and its coincidence signal or a dissidence signal is outputted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182220A JPS6428738A (en) | 1987-07-24 | 1987-07-24 | Diagnostic device for error detection and correction circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182220A JPS6428738A (en) | 1987-07-24 | 1987-07-24 | Diagnostic device for error detection and correction circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6428738A true JPS6428738A (en) | 1989-01-31 |
Family
ID=16114444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62182220A Pending JPS6428738A (en) | 1987-07-24 | 1987-07-24 | Diagnostic device for error detection and correction circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6428738A (en) |
-
1987
- 1987-07-24 JP JP62182220A patent/JPS6428738A/en active Pending
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