JPS5533273A - Channel control system - Google Patents
Channel control systemInfo
- Publication number
- JPS5533273A JPS5533273A JP10644478A JP10644478A JPS5533273A JP S5533273 A JPS5533273 A JP S5533273A JP 10644478 A JP10644478 A JP 10644478A JP 10644478 A JP10644478 A JP 10644478A JP S5533273 A JPS5533273 A JP S5533273A
- Authority
- JP
- Japan
- Prior art keywords
- data transfer
- transfer control
- control word
- channel
- stored
- 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 increase the processing speed of chained data transfer equivalently by pre-fetching data transfer control words stored in a main memory unit making use of the idle time when a channel is transferring data.
CONSTITUTION: Once an input-output instruction is sent from a central processor to a channel, a data transfer control word is extracted from main memory unit MM and inputted to memory part 101 of the channel. When a data transfer chain flag bit has been set, a next data transfer control word is stored in the memory part. The contents of counter 102, which counts up at every time when a data transfer control word is stored in memory part 101 and counts down when the data transfer control word is extracted to processing register part 106, are compared with those of register 104 where the number of pre-fetched words is set by pre-fetch control part 105, thereby controlling the number of pre-fetched words.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10644478A JPS5533273A (en) | 1978-08-31 | 1978-08-31 | Channel control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10644478A JPS5533273A (en) | 1978-08-31 | 1978-08-31 | Channel control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5533273A true JPS5533273A (en) | 1980-03-08 |
Family
ID=14433784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10644478A Pending JPS5533273A (en) | 1978-08-31 | 1978-08-31 | Channel control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5533273A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62143391A (en) * | 1985-12-16 | 1987-06-26 | 三洋電機株式会社 | Magnetron driving circuit |
-
1978
- 1978-08-31 JP JP10644478A patent/JPS5533273A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62143391A (en) * | 1985-12-16 | 1987-06-26 | 三洋電機株式会社 | Magnetron driving circuit |
JPH0453078B2 (en) * | 1985-12-16 | 1992-08-25 | Sanyo Electric Co |
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