JPS54130844A - Bus control system - Google Patents
Bus control systemInfo
- Publication number
- JPS54130844A JPS54130844A JP3814778A JP3814778A JPS54130844A JP S54130844 A JPS54130844 A JP S54130844A JP 3814778 A JP3814778 A JP 3814778A JP 3814778 A JP3814778 A JP 3814778A JP S54130844 A JPS54130844 A JP S54130844A
- Authority
- JP
- Japan
- Prior art keywords
- bus
- control unit
- unit
- master
- directions
- 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
Landscapes
- Bus Control (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE: To improve the system throughput by performing the operation execution dependent upon an arithmetic control unit and I/O memory operations in parallel.
CONSTITUTION: Main memory 24, arithmetic control unit 26 and a part of plural input devices IO are connected commonly, and information is transferred in both directions by H bus 22 on a basis of the master-slave relation between two arbitrary units connected commonly, and the L bus is controlled by control unit 26 in both directions. Here, when one unit, which is assigned as a slave, of units connected to the H bus has been operating already and cannot answer, a reject signal is transmitted to a master unit, and the master unit releases the H bus and starts the next processing continuously. As a result, the system throughput can be improved by performing the operation execution dependent upon control unit 26 and I/O memory operations in parallel.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3814778A JPS54130844A (en) | 1978-04-03 | 1978-04-03 | Bus control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3814778A JPS54130844A (en) | 1978-04-03 | 1978-04-03 | Bus control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54130844A true JPS54130844A (en) | 1979-10-11 |
Family
ID=12517299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3814778A Pending JPS54130844A (en) | 1978-04-03 | 1978-04-03 | Bus control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54130844A (en) |
-
1978
- 1978-04-03 JP JP3814778A patent/JPS54130844A/en active Pending
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