JPS57105057A - Address system of external storage device - Google Patents

Address system of external storage device

Info

Publication number
JPS57105057A
JPS57105057A JP18132380A JP18132380A JPS57105057A JP S57105057 A JPS57105057 A JP S57105057A JP 18132380 A JP18132380 A JP 18132380A JP 18132380 A JP18132380 A JP 18132380A JP S57105057 A JPS57105057 A JP S57105057A
Authority
JP
Japan
Prior art keywords
read
circuits
write
signals
track
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
JP18132380A
Other languages
Japanese (ja)
Inventor
Akihiko Furuya
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 JP18132380A priority Critical patent/JPS57105057A/en
Publication of JPS57105057A publication Critical patent/JPS57105057A/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)

Abstract

PURPOSE:To realize the effecive use of a data part, by selecting the output of a circuit which produces the read/write signals for the 1st and 2nd formats by means of the highest order bit of a track address and accordingly realizing the read or write in different formats with ever track. CONSTITUTION:Read/write gate signal generating circuits 1 and 3 plus decoder circuits 2 and 4 are provided to formatsIand II respectively. Then read/write signals 15 and 17 corresponding to each sector are produced from the circuits 1 and 3 by the internal clock of an external storage device. At the same time, the circuits 2 and 4 deliver decoder 4-bit and 8-bit outputs 16 and 18 by an address that designates a data sector given from outside. The coincidence is detected through coincidence detecting circuits 5 and 6 between the decoder outputs 16/18 and the signals 15/17 respectively. Then format selection signals 19 and 21 are applied to a logical circuit which uses a format selection signal 20 as an input. Thus a read/write signal 22 produced by the formats different with each track is delivered.
JP18132380A 1980-12-23 1980-12-23 Address system of external storage device Pending JPS57105057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18132380A JPS57105057A (en) 1980-12-23 1980-12-23 Address system of external storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18132380A JPS57105057A (en) 1980-12-23 1980-12-23 Address system of external storage device

Publications (1)

Publication Number Publication Date
JPS57105057A true JPS57105057A (en) 1982-06-30

Family

ID=16098670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18132380A Pending JPS57105057A (en) 1980-12-23 1980-12-23 Address system of external storage device

Country Status (1)

Country Link
JP (1) JPS57105057A (en)

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