JPS54142951A - Communication control unit - Google Patents
Communication control unitInfo
- Publication number
- JPS54142951A JPS54142951A JP5012878A JP5012878A JPS54142951A JP S54142951 A JPS54142951 A JP S54142951A JP 5012878 A JP5012878 A JP 5012878A JP 5012878 A JP5012878 A JP 5012878A JP S54142951 A JPS54142951 A JP S54142951A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- processor
- control unit
- communication control
- main control
- 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
- Debugging And Monitoring (AREA)
- Computer And Data Communications (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
PURPOSE: To enhance the maintenance function by enabling the central processor to give a direct access to the main control part via the route different from the normal data transfer route.
CONSTITUTION: The 1st connection control circuit 7 transfers the circuit information supplied from the data transmission circuit plus the circuit information delivered to the data transmission circuit from central processor 2 with every circuit based on the command given from processor 2 and under the control of main control part 6 of the communication control unit. And the 2nd connection control circuit 8 makes the communication control unit give a direct access to the main control part via processor 2. And address selection circuit identifieds whether the start given from processor 2 is for the 1st or 2nd connection control circuit. When the start is for circuit 8, various types of maintenance controls indicated from processor 2 are carried out.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5012878A JPS54142951A (en) | 1978-04-28 | 1978-04-28 | Communication control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5012878A JPS54142951A (en) | 1978-04-28 | 1978-04-28 | Communication control unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54142951A true JPS54142951A (en) | 1979-11-07 |
JPS5723287B2 JPS5723287B2 (en) | 1982-05-18 |
Family
ID=12850486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5012878A Granted JPS54142951A (en) | 1978-04-28 | 1978-04-28 | Communication control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54142951A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57161562A (en) * | 1981-03-30 | 1982-10-05 | Fujitsu Ltd | Diagnostic system for logical operation circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361931A (en) * | 1976-11-15 | 1978-06-02 | Hitachi Ltd | Communication control device |
-
1978
- 1978-04-28 JP JP5012878A patent/JPS54142951A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361931A (en) * | 1976-11-15 | 1978-06-02 | Hitachi Ltd | Communication control device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57161562A (en) * | 1981-03-30 | 1982-10-05 | Fujitsu Ltd | Diagnostic system for logical operation circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5723287B2 (en) | 1982-05-18 |
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