JPS57207967A - Magnetic tape controller having information updating function - Google Patents

Magnetic tape controller having information updating function

Info

Publication number
JPS57207967A
JPS57207967A JP9210281A JP9210281A JPS57207967A JP S57207967 A JPS57207967 A JP S57207967A JP 9210281 A JP9210281 A JP 9210281A JP 9210281 A JP9210281 A JP 9210281A JP S57207967 A JPS57207967 A JP S57207967A
Authority
JP
Japan
Prior art keywords
section
magnetic tape
command
planted
information
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
JP9210281A
Other languages
Japanese (ja)
Inventor
Isao Ikeda
Shiro Shikaide
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 JP9210281A priority Critical patent/JPS57207967A/en
Publication of JPS57207967A publication Critical patent/JPS57207967A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To directly use a magnetic tape as an access memory, by replacing information planted on the magnetic tape with new information and by replacing again the new information with the original information. CONSTITUTION:When an update start instruction from a CPU is received by a command analyzing section 271, the analyzing section 271 sends an update start signal to a command forming section 274. Upon receiving the update start signal, a command delivering section 275 sends a read command to a magnetic tape unit controlling section 25, and the controlling section 25 starts a magnetic tape device 3. When the magnetic tape device 3 is started, data planted on a magnetic tape are directly-mark-detected 280 and planted in a memory section 284. When an update mode command is sent from an interface controlling section 22 to the command analyzing section 271, the analyzing section sends a command corresponding to the update mode command to the controlling section 25. Therefore, the directly information planted in the memory section 284 is written in the device 3 through a data controlling section 24.
JP9210281A 1981-06-17 1981-06-17 Magnetic tape controller having information updating function Pending JPS57207967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9210281A JPS57207967A (en) 1981-06-17 1981-06-17 Magnetic tape controller having information updating function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9210281A JPS57207967A (en) 1981-06-17 1981-06-17 Magnetic tape controller having information updating function

Publications (1)

Publication Number Publication Date
JPS57207967A true JPS57207967A (en) 1982-12-20

Family

ID=14045076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9210281A Pending JPS57207967A (en) 1981-06-17 1981-06-17 Magnetic tape controller having information updating function

Country Status (1)

Country Link
JP (1) JPS57207967A (en)

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