JPS5494252A - Scan in out controller - Google Patents
Scan in out controllerInfo
- Publication number
- JPS5494252A JPS5494252A JP56178A JP56178A JPS5494252A JP S5494252 A JPS5494252 A JP S5494252A JP 56178 A JP56178 A JP 56178A JP 56178 A JP56178 A JP 56178A JP S5494252 A JPS5494252 A JP S5494252A
- Authority
- JP
- Japan
- Prior art keywords
- main control
- control
- scan
- subcontrol
- information
- 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
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To simultaneously perform the information return and checking, by providing the means returning the scan in out control information placed at the subcontroller to the main control, and the means comparing the information returned to the main control with original information, in the control used for the data processor.
CONSTITUTION: The main control 1 controlling the entire operation of scan in out such as registers required for the processor placed in the data processor, and the subcontrol 2 providing the subcontroller register 4 holding the control information transferred from the main control 1 and placed in dispersion for a plurality number, are provided. Ths subcontrol 2 of the control circuit with this constitution is provided with the selection circuit 6 transferring the control information transferred from the main control 1 held at the register 4 to the main control 1 as scan in out data transfer. Further, the main control 1 is provided with the comparison circuit 7 comparing the control information returned from the subcontrol 2 with original control information, allowing to perform the normality check of the subcontrol 2 and the data transfer simultaneously.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53000561A JPS5953585B2 (en) | 1978-01-09 | 1978-01-09 | Scan-in-out control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53000561A JPS5953585B2 (en) | 1978-01-09 | 1978-01-09 | Scan-in-out control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5494252A true JPS5494252A (en) | 1979-07-25 |
JPS5953585B2 JPS5953585B2 (en) | 1984-12-26 |
Family
ID=11477127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53000561A Expired JPS5953585B2 (en) | 1978-01-09 | 1978-01-09 | Scan-in-out control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5953585B2 (en) |
-
1978
- 1978-01-09 JP JP53000561A patent/JPS5953585B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5953585B2 (en) | 1984-12-26 |
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