JPS55131844A - Communication controller - Google Patents
Communication controllerInfo
- Publication number
- JPS55131844A JPS55131844A JP3822979A JP3822979A JPS55131844A JP S55131844 A JPS55131844 A JP S55131844A JP 3822979 A JP3822979 A JP 3822979A JP 3822979 A JP3822979 A JP 3822979A JP S55131844 A JPS55131844 A JP S55131844A
- Authority
- JP
- Japan
- Prior art keywords
- information
- unit
- control
- cpu
- data
- 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
- Computer And Data Communications (AREA)
- Communication Control (AREA)
Abstract
PURPOSE: To lighten loads on CPU and a data channel unit by separating a control information part from a user data part and then by independently transferring those information part and data part between CPU and a communication controller via different paths.
CONSTITUTION: Circuit control part 13 of communication controller 10 is equipped with communication circuits 5 and to central processing system unit 9, buffer register 14 and direct memory access control part 15 controlling direct access to the main memory unit of unit 9 via a data channel unit are connected. Then, transmitted-received information 6 is separated into control information part CD and user data part UD and transmitted-received information 7 consists only of control information part CD; and both pieces of information 6 and 7 are received by control part 13 by way of circuit 5, stored in memory part 12 via bus 16, and separated by main control part 11 into information part CD and data part UD, which are supplied to unit 9 through register 14 and control part 15 respectively, thereby reducing loads on CPU and the data channel unit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3822979A JPS55131844A (en) | 1979-03-30 | 1979-03-30 | Communication controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3822979A JPS55131844A (en) | 1979-03-30 | 1979-03-30 | Communication controller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55131844A true JPS55131844A (en) | 1980-10-14 |
JPS6327737B2 JPS6327737B2 (en) | 1988-06-06 |
Family
ID=12519469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3822979A Granted JPS55131844A (en) | 1979-03-30 | 1979-03-30 | Communication controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55131844A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62173550A (en) * | 1986-01-27 | 1987-07-30 | Fujitsu Ltd | Transfer system for direct memory access information |
JPH01103757A (en) * | 1987-10-16 | 1989-04-20 | Fujitsu Ten Ltd | Device for transferring data |
JPH02133849A (en) * | 1988-11-15 | 1990-05-23 | Pfu Ltd | Transfer process system for received data |
-
1979
- 1979-03-30 JP JP3822979A patent/JPS55131844A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62173550A (en) * | 1986-01-27 | 1987-07-30 | Fujitsu Ltd | Transfer system for direct memory access information |
JPH01103757A (en) * | 1987-10-16 | 1989-04-20 | Fujitsu Ten Ltd | Device for transferring data |
JPH02133849A (en) * | 1988-11-15 | 1990-05-23 | Pfu Ltd | Transfer process system for received data |
Also Published As
Publication number | Publication date |
---|---|
JPS6327737B2 (en) | 1988-06-06 |
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