JPS5552130A - Information processing unit - Google Patents
Information processing unitInfo
- Publication number
- JPS5552130A JPS5552130A JP12476578A JP12476578A JPS5552130A JP S5552130 A JPS5552130 A JP S5552130A JP 12476578 A JP12476578 A JP 12476578A JP 12476578 A JP12476578 A JP 12476578A JP S5552130 A JPS5552130 A JP S5552130A
- Authority
- JP
- Japan
- Prior art keywords
- bus
- route
- control
- processing unit
- mode
- 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
- Hardware Redundancy (AREA)
- Bus Control (AREA)
Abstract
PURPOSE: To reduce the burden in the bus control of the processing unit, by providing the mode selection means with duplicated bus and performing bus selection of the connection bus with the polarity of bus mode and route FF.
CONSTITUTION: The buses 41 and 42 provide the control lines 41b, 42b in parallel with the data lines 41a and 42. When the output of the route FF 51 is "1" and the mode control line 41b is "1" and 42b is "0", the cable driver 71 and the cable receiver 61 are made effective, and the processor 21 is enabled for transfer via the bus 41. When the bus 41 is failure, the bus slection is made by the replacement of the signal on the control lines 41a and 42b by the control unit 11. In this case, since the route FF 51 is not concerted, the burden of the data processor 21 is reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12476578A JPS5552130A (en) | 1978-10-11 | 1978-10-11 | Information processing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12476578A JPS5552130A (en) | 1978-10-11 | 1978-10-11 | Information processing unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5552130A true JPS5552130A (en) | 1980-04-16 |
JPS628832B2 JPS628832B2 (en) | 1987-02-25 |
Family
ID=14893550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12476578A Granted JPS5552130A (en) | 1978-10-11 | 1978-10-11 | Information processing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5552130A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5941031A (en) * | 1982-05-07 | 1984-03-07 | デイジタル・イクイプメント・コ−ポレ−シヨン | Dural path bus construction for mutual connection of computer |
JPS6075957A (en) * | 1983-09-30 | 1985-04-30 | Fujitsu Ltd | Selection control system of bus group |
JPS6282452A (en) * | 1985-10-07 | 1987-04-15 | Nec Corp | Data transfer device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49114843A (en) * | 1973-02-28 | 1974-11-01 | ||
JPS5393741A (en) * | 1977-01-26 | 1978-08-17 | Hokushin Electric Works | Duplex data transfer system |
-
1978
- 1978-10-11 JP JP12476578A patent/JPS5552130A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49114843A (en) * | 1973-02-28 | 1974-11-01 | ||
JPS5393741A (en) * | 1977-01-26 | 1978-08-17 | Hokushin Electric Works | Duplex data transfer system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5941031A (en) * | 1982-05-07 | 1984-03-07 | デイジタル・イクイプメント・コ−ポレ−シヨン | Dural path bus construction for mutual connection of computer |
JPS6075957A (en) * | 1983-09-30 | 1985-04-30 | Fujitsu Ltd | Selection control system of bus group |
JPH059820B2 (en) * | 1983-09-30 | 1993-02-08 | Fujitsu Kk | |
JPS6282452A (en) * | 1985-10-07 | 1987-04-15 | Nec Corp | Data transfer device |
JPH0555904B2 (en) * | 1985-10-07 | 1993-08-18 | Nippon Electric Co |
Also Published As
Publication number | Publication date |
---|---|
JPS628832B2 (en) | 1987-02-25 |
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