JPS54161855A - Input/output control system - Google Patents
Input/output control systemInfo
- Publication number
- JPS54161855A JPS54161855A JP7067078A JP7067078A JPS54161855A JP S54161855 A JPS54161855 A JP S54161855A JP 7067078 A JP7067078 A JP 7067078A JP 7067078 A JP7067078 A JP 7067078A JP S54161855 A JPS54161855 A JP S54161855A
- Authority
- JP
- Japan
- Prior art keywords
- command
- input
- channel
- control unit
- output
- 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 realize the pre-fetch of the command to the control unit and thus to realize a high-speed command chaining process by providing the means to memorize the flag and the command of several channel command words plus the function to decide the command chain to the input/output control unit.
CONSTITUTION: The input/output control system contains input/output channel 2 which controls the data transfer between main memory 1 and the input/output device based on the channel command word stored in memory 1 and input/output control unit 3 which controls the input-output device. Chanel 2 reads out the several chained channel commands stored in memory 1 and send it to command word pre- fetch control part 4. Then the commands chained by the channel command are memorized in registers 5W7 by the request given from I/0 control part 8 of unit 3, thus realizing the pre-fetch of the command to control unit 3.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7067078A JPS54161855A (en) | 1978-06-12 | 1978-06-12 | Input/output control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7067078A JPS54161855A (en) | 1978-06-12 | 1978-06-12 | Input/output control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54161855A true JPS54161855A (en) | 1979-12-21 |
Family
ID=13438322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7067078A Pending JPS54161855A (en) | 1978-06-12 | 1978-06-12 | Input/output control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161855A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63208147A (en) * | 1987-02-25 | 1988-08-29 | Hitachi Ltd | Command starting system |
JPH02100163A (en) * | 1988-10-07 | 1990-04-12 | Fujitsu Ltd | Command chain control system |
-
1978
- 1978-06-12 JP JP7067078A patent/JPS54161855A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63208147A (en) * | 1987-02-25 | 1988-08-29 | Hitachi Ltd | Command starting system |
JPH02100163A (en) * | 1988-10-07 | 1990-04-12 | Fujitsu Ltd | Command chain control system |
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