JPS5498143A - Communication control system - Google Patents
Communication control systemInfo
- Publication number
- JPS5498143A JPS5498143A JP431078A JP431078A JPS5498143A JP S5498143 A JPS5498143 A JP S5498143A JP 431078 A JP431078 A JP 431078A JP 431078 A JP431078 A JP 431078A JP S5498143 A JPS5498143 A JP S5498143A
- Authority
- JP
- Japan
- Prior art keywords
- control
- firmware
- ram
- transmission
- communication 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.)
- Pending
Links
Landscapes
- Information Transfer Between Computers (AREA)
- Computer And Data Communications (AREA)
- Communication Control (AREA)
Abstract
PURPOSE: To make it possible to control various communication control procedures in one communication control module.
CONSTITUTION: The command from the central processing unit (arithmetic control unit and main memory) having specific command data is detected by firmware in ROM 14, and firmware data is read out from the main memory and stored in RAM 15. After the transmission is completed, the central processing unit is informed; and when ordinary commands are received, control is branched to firmware in RAM 15. After that, control is under firmware in RAM 15. Firmware in RAM 15 sets the synchronous system of receiving/transmission by controlling URTLSI 17 besides transmission procedures control, and can generate various transfer clocks by controlling PTLSI, so that it is possible to cope with various communication systems in common hardware.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP431078A JPS5498143A (en) | 1978-01-20 | 1978-01-20 | Communication control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP431078A JPS5498143A (en) | 1978-01-20 | 1978-01-20 | Communication control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5498143A true JPS5498143A (en) | 1979-08-02 |
Family
ID=11580904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP431078A Pending JPS5498143A (en) | 1978-01-20 | 1978-01-20 | Communication control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5498143A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56152038A (en) * | 1980-04-25 | 1981-11-25 | Fujitsu Ltd | Data transfer processor |
JPS5831439A (en) * | 1981-08-19 | 1983-02-24 | Fujitsu Ltd | Updating system for firmware |
JPS59501762A (en) * | 1982-09-30 | 1984-10-18 | ウエスタ−ン エレクトリツク カムパニ−,インコ−ポレ−テツド | Direct memory access interface device |
JPS6378255A (en) * | 1986-09-20 | 1988-04-08 | Alps Electric Co Ltd | Execution system for program |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50109635A (en) * | 1974-02-04 | 1975-08-28 | ||
JPS5157262A (en) * | 1974-11-15 | 1976-05-19 | Nippon Electric Co |
-
1978
- 1978-01-20 JP JP431078A patent/JPS5498143A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50109635A (en) * | 1974-02-04 | 1975-08-28 | ||
JPS5157262A (en) * | 1974-11-15 | 1976-05-19 | Nippon Electric Co |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56152038A (en) * | 1980-04-25 | 1981-11-25 | Fujitsu Ltd | Data transfer processor |
JPS622346B2 (en) * | 1980-04-25 | 1987-01-19 | Fujitsu Kk | |
JPS5831439A (en) * | 1981-08-19 | 1983-02-24 | Fujitsu Ltd | Updating system for firmware |
JPS59501762A (en) * | 1982-09-30 | 1984-10-18 | ウエスタ−ン エレクトリツク カムパニ−,インコ−ポレ−テツド | Direct memory access interface device |
JPH0420497B2 (en) * | 1982-09-30 | 1992-04-03 | Ei Teii Ando Teii Tekunorojiizu Inc | |
JPS6378255A (en) * | 1986-09-20 | 1988-04-08 | Alps Electric Co Ltd | Execution system for program |
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