JPS5697131A - Command chain method for input and output system - Google Patents
Command chain method for input and output systemInfo
- Publication number
- JPS5697131A JPS5697131A JP17231179A JP17231179A JPS5697131A JP S5697131 A JPS5697131 A JP S5697131A JP 17231179 A JP17231179 A JP 17231179A JP 17231179 A JP17231179 A JP 17231179A JP S5697131 A JPS5697131 A JP S5697131A
- Authority
- JP
- Japan
- Prior art keywords
- command
- chain
- register
- cmp
- code
- 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 short the time of sequence of chain system, by transmitting the end status signal with the status request signal from the input and outut device and transmitting the signal at the channel side in response to it which indicates the transmission of the next command.
CONSTITUTION: The central processing unit accesses the subchannel memory corresponding to the basic peripheral adaptor which reports the reception of the end status to check if the command chain CC is instructed. Next, when the chain CC is indicated, CCW is fetched from the main memroy with CCW address writtern in the subchannel memory, the CU address is set to the DRO register and the command code is set to the DRI register, CMP is taken as "1" and the CMP code is taken as "10". After that, while waiting that SRQ is "0", CMP of the iTAG register is set to "0", COM code is to "00" and SEL to "1" to check if the command chain is successful.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17231179A JPS5697131A (en) | 1979-12-29 | 1979-12-29 | Command chain method for input and output system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17231179A JPS5697131A (en) | 1979-12-29 | 1979-12-29 | Command chain method for input and output system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5697131A true JPS5697131A (en) | 1981-08-05 |
Family
ID=15939556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17231179A Pending JPS5697131A (en) | 1979-12-29 | 1979-12-29 | Command chain method for input and output system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5697131A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5216935A (en) * | 1988-12-16 | 1993-06-08 | Kubota Ltd. | Bidirectional control arrangement for vehicle |
-
1979
- 1979-12-29 JP JP17231179A patent/JPS5697131A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5216935A (en) * | 1988-12-16 | 1993-06-08 | Kubota Ltd. | Bidirectional control arrangement for vehicle |
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