JPS5451433A - Data processing system - Google Patents
Data processing systemInfo
- Publication number
- JPS5451433A JPS5451433A JP11774777A JP11774777A JPS5451433A JP S5451433 A JPS5451433 A JP S5451433A JP 11774777 A JP11774777 A JP 11774777A JP 11774777 A JP11774777 A JP 11774777A JP S5451433 A JPS5451433 A JP S5451433A
- Authority
- JP
- Japan
- Prior art keywords
- extended
- iocb
- ioca
- data processing
- same
- 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 make easy for the data giving and reception for the data processing unit and to avoid larger size unit, even if I/O is extended through the provision of the bus buffer means.
CONSTITUTION: The data processing unit DPU consisting of the microprocessor MPU, I/O 101 and 102, IOC1 and IOC 2 of the control module of I/O, and memory MEM is connected to the extended input and output control modules IOCA, IOCB, I/O IOA and IOB via the bus buffer BBF. When BBF is connected like this, the control line ICL1 is connected to IOCA and IOCB with the form of sweet potato vines the same as the control line ICL allocated in DPU, and the extended bus line BUS1 is connected to each control module in the form of multi-drop type the same as the bus line BUS2. Accordingly, MPU can be controlled to IOCA and IOCB extended the same as IOC1 and IOC2
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11774777A JPS5451433A (en) | 1977-09-30 | 1977-09-30 | Data processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11774777A JPS5451433A (en) | 1977-09-30 | 1977-09-30 | Data processing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451433A true JPS5451433A (en) | 1979-04-23 |
Family
ID=14719301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11774777A Pending JPS5451433A (en) | 1977-09-30 | 1977-09-30 | Data processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451433A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5743217A (en) * | 1980-08-29 | 1982-03-11 | Nec Corp | Hierarchical structure bidirectional bus controlling system |
JPS6148060A (en) * | 1984-08-15 | 1986-03-08 | Nec Corp | Bus extending system |
JPS62201862U (en) * | 1987-03-12 | 1987-12-23 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5261444A (en) * | 1975-11-17 | 1977-05-20 | Yokogawa Hokushin Electric Corp | Data bus system of information processing unit |
JPS52102643A (en) * | 1976-02-25 | 1977-08-29 | Hitachi Ltd | Data processor |
JPS5387133A (en) * | 1977-01-06 | 1978-08-01 | Ibm | Input*output interface connecting circuit |
-
1977
- 1977-09-30 JP JP11774777A patent/JPS5451433A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5261444A (en) * | 1975-11-17 | 1977-05-20 | Yokogawa Hokushin Electric Corp | Data bus system of information processing unit |
JPS52102643A (en) * | 1976-02-25 | 1977-08-29 | Hitachi Ltd | Data processor |
JPS5387133A (en) * | 1977-01-06 | 1978-08-01 | Ibm | Input*output interface connecting circuit |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5743217A (en) * | 1980-08-29 | 1982-03-11 | Nec Corp | Hierarchical structure bidirectional bus controlling system |
JPS6148060A (en) * | 1984-08-15 | 1986-03-08 | Nec Corp | Bus extending system |
JPH0223893B2 (en) * | 1984-08-15 | 1990-05-25 | Nippon Electric Co | |
JPS62201862U (en) * | 1987-03-12 | 1987-12-23 |
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