JPS5657153A - Fault detection system - Google Patents
Fault detection systemInfo
- Publication number
- JPS5657153A JPS5657153A JP13312279A JP13312279A JPS5657153A JP S5657153 A JPS5657153 A JP S5657153A JP 13312279 A JP13312279 A JP 13312279A JP 13312279 A JP13312279 A JP 13312279A JP S5657153 A JPS5657153 A JP S5657153A
- Authority
- JP
- Japan
- Prior art keywords
- register
- detected
- giving
- information
- branch
- 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
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- Debugging And Monitoring (AREA)
Abstract
PURPOSE: To detect a branch destination error with a small euantity of hardware, by giving an identification number to the word unit of the control memory and by giving double operands to the branch instruction, in the fault detection system of the microprogram control device of the information processor.
CONSTITUTION: Control memory 20 is accessed by information of address register 10, and read information is set to information register 30. The operation code of register 30 is decoded in 80; and if the branch instruction is detected as the result, signal line 80a becomes "1", and the word identification number of the branch destination is stored in register 40. In the next cycle, the micro instruction stored at the address of branch destination is read and stored in register 30. Consequently, when word identification numbers from registers 30 and 40 are compared with each other in 100, signal "0" is ouput to line 100a if agreement is detected; and signal "1" is output to line 100a if disagreement is detected. Thus, the branch destination error can be detected with a small quantity of hardware by giving the identification number to the word unit in the control memory and giving double operands to the branch instruction.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13312279A JPS5657153A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13312279A JPS5657153A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657153A true JPS5657153A (en) | 1981-05-19 |
Family
ID=15097296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13312279A Pending JPS5657153A (en) | 1979-10-16 | 1979-10-16 | Fault detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657153A (en) |
-
1979
- 1979-10-16 JP JP13312279A patent/JPS5657153A/en active Pending
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