JPS57195398A - Substitute gate control system - Google Patents
Substitute gate control systemInfo
- Publication number
- JPS57195398A JPS57195398A JP56080632A JP8063281A JPS57195398A JP S57195398 A JPS57195398 A JP S57195398A JP 56080632 A JP56080632 A JP 56080632A JP 8063281 A JP8063281 A JP 8063281A JP S57195398 A JPS57195398 A JP S57195398A
- Authority
- JP
- Japan
- Prior art keywords
- register
- substitute
- inhal
- inputted
- registers
- 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.)
- Granted
Links
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
- Hardware Redundancy (AREA)
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE: To realize a high-reliability substitute gate control system by controlling registers by a substitute information transmission indication signal, detecting the states of the registers, and setting substitute information in a different register.
CONSTITUTION: Signals INHAL-1 and INHAL-2 for indicating errors of parity checks on registers 2-1 and 2-2 respectively are inputted to flip-flops (FF) 40 and 41. If a parity check error occurs on the side of the register 2-1, the signal INHAL has a level (0) to hold a Q-terminal output to be inputted to the FF circuit 40 at (1). NAND circuits 42, 43, and 46 outputs signals (0), (1), and (1), and NAND circuits 44, 45, and 46 output signals (1), (1), and (1); and output signals J and K are inputted to NAND circuits 47 and 48 to output signals (1) and (0). Therefore, a substitute switching circuit composed of an FF22 switches the register 2-1 over to the register 2-2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080632A JPS57195398A (en) | 1981-05-26 | 1981-05-26 | Substitute gate control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080632A JPS57195398A (en) | 1981-05-26 | 1981-05-26 | Substitute gate control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57195398A true JPS57195398A (en) | 1982-12-01 |
JPS6321933B2 JPS6321933B2 (en) | 1988-05-10 |
Family
ID=13723732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56080632A Granted JPS57195398A (en) | 1981-05-26 | 1981-05-26 | Substitute gate control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57195398A (en) |
-
1981
- 1981-05-26 JP JP56080632A patent/JPS57195398A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6321933B2 (en) | 1988-05-10 |
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