JPS5566021A - Communication control unit - Google Patents
Communication control unitInfo
- Publication number
- JPS5566021A JPS5566021A JP13788278A JP13788278A JPS5566021A JP S5566021 A JPS5566021 A JP S5566021A JP 13788278 A JP13788278 A JP 13788278A JP 13788278 A JP13788278 A JP 13788278A JP S5566021 A JPS5566021 A JP S5566021A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- circuit
- transferred
- receiving
- control unit
- 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 a program processing rapid and make it possible to cope with the receiving processing of a high-speed circuit and many circuits sufficiently by discriminating receiving data and the state of a communication control unit by hardware.
CONSTITUTION: Receiving data from a communication circuit is stored temporarily in receiving buffer 2, and is transferred to main storage device 10 after code discrimination in 3 [the discrimination result is stored in state hold circuit 4 (bit 0 to bit L)]. Meanwhile, the state of communication control unit 1 at a data receiving time is held in status register 5 and is transferred to circuit 4 (bit L+1 to bit M). Next, contents of circuit 4 are trasferred to relative address generation circuit 7 at the data receiving end to generate relative address 50 (where a bit addition part from bit N+1 to bit M is added), and this address 50 is transferred to the instructing relative address part at an address, which is determined previously, of unit 10 under the control of circuit 8, and simultaneously, interrupt 6 to CPU9 is caused, and the succeeding processing is transferred to software.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13788278A JPS5566021A (en) | 1978-11-10 | 1978-11-10 | Communication control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13788278A JPS5566021A (en) | 1978-11-10 | 1978-11-10 | Communication control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5566021A true JPS5566021A (en) | 1980-05-19 |
Family
ID=15208883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13788278A Pending JPS5566021A (en) | 1978-11-10 | 1978-11-10 | Communication control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5566021A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6137795A (en) * | 1997-03-19 | 2000-10-24 | Fujitsu Limited | Cell switching method and cell exchange system |
-
1978
- 1978-11-10 JP JP13788278A patent/JPS5566021A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6137795A (en) * | 1997-03-19 | 2000-10-24 | Fujitsu Limited | Cell switching method and cell exchange system |
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