JPS5657154A - Fault detection system - Google Patents
Fault detection systemInfo
- Publication number
- JPS5657154A JPS5657154A JP13312379A JP13312379A JPS5657154A JP S5657154 A JPS5657154 A JP S5657154A JP 13312379 A JP13312379 A JP 13312379A JP 13312379 A JP13312379 A JP 13312379A JP S5657154 A JPS5657154 A JP S5657154A
- Authority
- JP
- Japan
- Prior art keywords
- register
- word
- identification number
- microprogram
- cycle
- 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 inspect the sequence of the microprogram in every machine cycle, by providing a word idetification number giving algorithm as a word identification number generating circuit with hardware, in the fault detection system of the microprogram control device.
CONSTITUTION: In the first cycle, micro instruction inversion B other than the barnch instruction is stored to register 30 from control memory 10 through register 20. New word identification number a+1 generated by word identification number generating circuit A1 is selected on a basis of identification number (a) of register 30. In the second cycle, branch instruction B is read from memory 10 and is stored in register 20. Consequently, number a+1 of selection result E2a and number (b) of word number 20a are compared with each other in comparing circuit C1. As the result, a signal indicating "0" of the normal state is sent to the fault processing control part. In the following cycles, the same operations are performed also. As a result, the microprogram can be inspected in every machine cycle.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13312379A JPS5657154A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13312379A JPS5657154A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657154A true JPS5657154A (en) | 1981-05-19 |
Family
ID=15097320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13312379A Pending JPS5657154A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657154A (en) |
-
1979
- 1979-10-16 JP JP13312379A patent/JPS5657154A/en active Pending
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