JPS55119763A - Magnetic device control system - Google Patents

Magnetic device control system

Info

Publication number
JPS55119763A
JPS55119763A JP2746279A JP2746279A JPS55119763A JP S55119763 A JPS55119763 A JP S55119763A JP 2746279 A JP2746279 A JP 2746279A JP 2746279 A JP2746279 A JP 2746279A JP S55119763 A JPS55119763 A JP S55119763A
Authority
JP
Japan
Prior art keywords
channel
data
search
stored
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.)
Pending
Application number
JP2746279A
Other languages
Japanese (ja)
Inventor
Haruo Momose
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 JP2746279A priority Critical patent/JPS55119763A/en
Publication of JPS55119763A publication Critical patent/JPS55119763A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To suppress the access frequency to memory and to increase the data processing efficiency, by storing the data to the control unit through one search by setting the specific command and performing search by using the stored data at second.
CONSTITUTION: The information deliverd from the channel 3 is stored in the first operation, and the command executing the operation with the stored information at the operation twice or after is prepared, and the command is delivered to the device unit 5 via the magnetic disc control unit 4 from the channel 3. Further, the data read out once from the unit 5 with the unit 4 is temporarily stored in the channel data buffer 10, and the content of the buffer 10 and the content read out at second search are compared at the search comparison circuit 9 under the control of the processor section 11, and comparison is repeated at the circuit 9 until agreement is made, and the agreement is reproted to the channel 3 via the channel interface control circuit 6 to increase the data processing efficiency.
COPYRIGHT: (C)1980,JPO&Japio
JP2746279A 1979-03-09 1979-03-09 Magnetic device control system Pending JPS55119763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2746279A JPS55119763A (en) 1979-03-09 1979-03-09 Magnetic device control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2746279A JPS55119763A (en) 1979-03-09 1979-03-09 Magnetic device control system

Publications (1)

Publication Number Publication Date
JPS55119763A true JPS55119763A (en) 1980-09-13

Family

ID=12221774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2746279A Pending JPS55119763A (en) 1979-03-09 1979-03-09 Magnetic device control system

Country Status (1)

Country Link
JP (1) JPS55119763A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169929A (en) * 1984-02-14 1985-09-03 Hitachi Ltd Access control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169929A (en) * 1984-02-14 1985-09-03 Hitachi Ltd Access control system
JPH0438003B2 (en) * 1984-02-14 1992-06-23 Hitachi Ltd

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