JPS55147859A - Communication controlling system - Google Patents
Communication controlling systemInfo
- Publication number
- JPS55147859A JPS55147859A JP5554279A JP5554279A JPS55147859A JP S55147859 A JPS55147859 A JP S55147859A JP 5554279 A JP5554279 A JP 5554279A JP 5554279 A JP5554279 A JP 5554279A JP S55147859 A JPS55147859 A JP S55147859A
- Authority
- JP
- Japan
- Prior art keywords
- physical addresses
- lines
- addresses
- scanning unit
- line
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Communication Control (AREA)
Abstract
PURPOSE:To process a large number of lines with a small hardware, by providing a line scanning unit where double definition without fixing physical addresses on logical addresses and time division operations are possible. CONSTITUTION:Before transmission and receiving operatins, the CPU initializes physical addresses of the group of line adapters LA205. Physical addresses from the CPU which are set onto logical addresses of memories corresponding to lines in the line control part are led out by line scanning unit 204. Scanning unit 204 reads out logical addresses of memories corresponding to lines while selecting them successively even if many multiplex communication control units are connected, and unit 204 transfers physical addresses led out from them to LA205 in time division.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5554279A JPS55147859A (en) | 1979-05-07 | 1979-05-07 | Communication controlling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5554279A JPS55147859A (en) | 1979-05-07 | 1979-05-07 | Communication controlling system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55147859A true JPS55147859A (en) | 1980-11-18 |
Family
ID=13001595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5554279A Pending JPS55147859A (en) | 1979-05-07 | 1979-05-07 | Communication controlling system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55147859A (en) |
-
1979
- 1979-05-07 JP JP5554279A patent/JPS55147859A/en active Pending
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