JPS5533273A - Channel control system - Google Patents

Channel control system

Info

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
Application number
JP10644478A
Other languages
Japanese (ja)
Inventor
Kinichi Takeda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10644478A priority Critical patent/JPS5533273A/en
Publication of JPS5533273A publication Critical patent/JPS5533273A/en
Pending legal-status Critical Current

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
JP10644478A 1978-08-31 1978-08-31 Channel control system Pending JPS5533273A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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