JPS556621A - Bus switching control system - Google Patents
Bus switching control systemInfo
- Publication number
- JPS556621A JPS556621A JP7873378A JP7873378A JPS556621A JP S556621 A JPS556621 A JP S556621A JP 7873378 A JP7873378 A JP 7873378A JP 7873378 A JP7873378 A JP 7873378A JP S556621 A JPS556621 A JP S556621A
- Authority
- JP
- Japan
- Prior art keywords
- transmission direction
- buses
- control
- control system
- switching 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
- Small-Scale Networks (AREA)
- Bus Control (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
PURPOSE: To make it possible to control the transmission direction between the lst and 2nd buses by switching, by controlling the transmission direction of a bilateral buffer according to the value of an address bit.
CONSTITUTION: Microprocessors 20 and 21 control data buses 22 and 23 respectively; processor 21 composed of a bipolar element operates faster than processor 20. Here, bilateral buffer 24 available for the control of the transmission direction is interposed between buses 22 and 23 to control the transmission direction of buffer 24, thereby controlling the transmission direction between buses 22 and 23 by switching.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7873378A JPS556621A (en) | 1978-06-30 | 1978-06-30 | Bus switching control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7873378A JPS556621A (en) | 1978-06-30 | 1978-06-30 | Bus switching control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS556621A true JPS556621A (en) | 1980-01-18 |
JPS5743940B2 JPS5743940B2 (en) | 1982-09-18 |
Family
ID=13670078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7873378A Granted JPS556621A (en) | 1978-06-30 | 1978-06-30 | Bus switching control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556621A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57171864A (en) * | 1981-04-16 | 1982-10-22 | Toshiba Corp | Data communication system |
Citations (2)
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 |
JPS5387133A (en) * | 1977-01-06 | 1978-08-01 | Ibm | Input*output interface connecting circuit |
-
1978
- 1978-06-30 JP JP7873378A patent/JPS556621A/en active Granted
Patent Citations (2)
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 |
JPS5387133A (en) * | 1977-01-06 | 1978-08-01 | Ibm | Input*output interface connecting circuit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57171864A (en) * | 1981-04-16 | 1982-10-22 | Toshiba Corp | Data communication system |
Also Published As
Publication number | Publication date |
---|---|
JPS5743940B2 (en) | 1982-09-18 |
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