JPS5467347A - Microprogram control system of control unit - Google Patents
Microprogram control system of control unitInfo
- Publication number
- JPS5467347A JPS5467347A JP13349277A JP13349277A JPS5467347A JP S5467347 A JPS5467347 A JP S5467347A JP 13349277 A JP13349277 A JP 13349277A JP 13349277 A JP13349277 A JP 13349277A JP S5467347 A JPS5467347 A JP S5467347A
- Authority
- JP
- Japan
- Prior art keywords
- register
- microprogram
- processor
- diode
- control unit
- 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 increase the maintenanceability, by enabling to trace the program and making wasy for troubleshooting, through the addition of a simple circuit.
CONSTITUTION: In the control unit performing control with the microprogram by using the microprocessor 1, the buffer register 11 inputting the data on the processor bus 7 is connected to the processor 1 for the input terminal DI via the selector 4. Further, the register 11 monitors the progressive path of the microprogram, one end of the light emitting diode 12 for display is connected to the output terminals DO1 to DOn of the register 11, and another end of the diode 12 is connected to the power supply +V in common connection via the resistor 13. Further, the signal corresponding to the present processing rate is stored to the register 11 every processing step of program by the processor 1. Further, if any failure is taken place, display is made by the diode 12, making easy for troubleshooting.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13349277A JPS5467347A (en) | 1977-11-09 | 1977-11-09 | Microprogram control system of control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13349277A JPS5467347A (en) | 1977-11-09 | 1977-11-09 | Microprogram control system of control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5467347A true JPS5467347A (en) | 1979-05-30 |
Family
ID=15106024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13349277A Pending JPS5467347A (en) | 1977-11-09 | 1977-11-09 | Microprogram control system of control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5467347A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5697160A (en) * | 1980-01-07 | 1981-08-05 | Hitachi Ltd | Display system of cause to computer stop |
JPS57157362A (en) * | 1981-03-25 | 1982-09-28 | Hitachi Ltd | Method and apparatus of execution path career data pickup for architecture program |
JPS57185548A (en) * | 1981-05-12 | 1982-11-15 | Olympus Optical Co Ltd | Detecting method for computer operation failure |
-
1977
- 1977-11-09 JP JP13349277A patent/JPS5467347A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5697160A (en) * | 1980-01-07 | 1981-08-05 | Hitachi Ltd | Display system of cause to computer stop |
JPS57157362A (en) * | 1981-03-25 | 1982-09-28 | Hitachi Ltd | Method and apparatus of execution path career data pickup for architecture program |
JPS57185548A (en) * | 1981-05-12 | 1982-11-15 | Olympus Optical Co Ltd | Detecting method for computer operation failure |
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