JPS5692629A - Advanced reading control system of input and output system - Google Patents

Advanced reading control system of input and output system

Info

Publication number
JPS5692629A
JPS5692629A JP17007279A JP17007279A JPS5692629A JP S5692629 A JPS5692629 A JP S5692629A JP 17007279 A JP17007279 A JP 17007279A JP 17007279 A JP17007279 A JP 17007279A JP S5692629 A JPS5692629 A JP S5692629A
Authority
JP
Japan
Prior art keywords
data transfer
command
unit
reading command
advance
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
Application number
JP17007279A
Other languages
Japanese (ja)
Inventor
Hidekazu Tohata
Akira Ozora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17007279A priority Critical patent/JPS5692629A/en
Publication of JPS5692629A publication Critical patent/JPS5692629A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make efficient the data transfer at asynchronous state, by assuring a plurality of data buffer areas in advance on the main memory and issuing the advance reading command through the designation of the set number of the input and output controller.
CONSTITUTION: A host data processor 1 assures data buffer areas 9AW9C in advance on the main memory 2, some chained channel command words CCW8 are prepared, and they are informed to the CH3 as an advanced reading command 7. The CH3 stores CCW11-1 instructed with an advanced reading command 10 to a unit control word memory UCW corresponding to a control unit 4-n with this command and informs the issue of the advanced reading command to the unit 4-n. The unit 4-n performs data transfer through the data transfer request when the data transfer is produced. The CH3 writes in the transferred data to the area 9A on the main memory 2 directly based on CCW11-1 and this is informed to the device 1.
COPYRIGHT: (C)1981,JPO&Japio
JP17007279A 1979-12-26 1979-12-26 Advanced reading control system of input and output system Pending JPS5692629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17007279A JPS5692629A (en) 1979-12-26 1979-12-26 Advanced reading control system of input and output system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17007279A JPS5692629A (en) 1979-12-26 1979-12-26 Advanced reading control system of input and output system

Publications (1)

Publication Number Publication Date
JPS5692629A true JPS5692629A (en) 1981-07-27

Family

ID=15898109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17007279A Pending JPS5692629A (en) 1979-12-26 1979-12-26 Advanced reading control system of input and output system

Country Status (1)

Country Link
JP (1) JPS5692629A (en)

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