JPS5587221A - Channel unit - Google Patents
Channel unitInfo
- Publication number
- JPS5587221A JPS5587221A JP16354378A JP16354378A JPS5587221A JP S5587221 A JPS5587221 A JP S5587221A JP 16354378 A JP16354378 A JP 16354378A JP 16354378 A JP16354378 A JP 16354378A JP S5587221 A JPS5587221 A JP S5587221A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- detecting
- data
- command word
- unit
- 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.)
- Granted
Links
Abstract
PURPOSE: To send information on data length to CPU while securing the perfect transparency of data transferred from a terminal equipment, by detecting a fixed display bit in a channel command word and by storing transfer data byte information in an area to which we can refer by a program.
CONSTITUTION: Through chain command operation, several channel commands are continuously executed and the number of data transferred from input-output unit 22 to main memory unit 21 is sent to CPU23. Such this channel unit 20 is provided witn a method of detecting a fixed display bit in a channel command word in process of execution or a following channel command word, and information on the number of data bytes actually transferred from input-output unit 22 is stored by the output of this detecting method in any area of main memory unit 21 to which an operator can refer by a program.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16354378A JPS5852249B2 (en) | 1978-12-25 | 1978-12-25 | channel device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16354378A JPS5852249B2 (en) | 1978-12-25 | 1978-12-25 | channel device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16378984A Division JPS6111870A (en) | 1984-08-06 | 1984-08-06 | Channel device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5587221A true JPS5587221A (en) | 1980-07-01 |
JPS5852249B2 JPS5852249B2 (en) | 1983-11-21 |
Family
ID=15775877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16354378A Expired JPS5852249B2 (en) | 1978-12-25 | 1978-12-25 | channel device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852249B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106938A (en) * | 1980-12-24 | 1982-07-03 | Fujitsu Ltd | Continuous processing system for undefined-length data |
JP2014522021A (en) * | 2011-06-30 | 2014-08-28 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Computer program, apparatus, and method for facilitating transport mode input / output operations between a channel subsystem and input / output devices |
-
1978
- 1978-12-25 JP JP16354378A patent/JPS5852249B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106938A (en) * | 1980-12-24 | 1982-07-03 | Fujitsu Ltd | Continuous processing system for undefined-length data |
JPS6238748B2 (en) * | 1980-12-24 | 1987-08-19 | Fujitsu Ltd | |
JP2014522021A (en) * | 2011-06-30 | 2014-08-28 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Computer program, apparatus, and method for facilitating transport mode input / output operations between a channel subsystem and input / output devices |
Also Published As
Publication number | Publication date |
---|---|
JPS5852249B2 (en) | 1983-11-21 |
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