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JPS57136240A - Peripheral device switching device - Google Patents

Peripheral device switching device

Info

Publication number
JPS57136240A
JPS57136240A JP2152981A JP2152981A JPS57136240A JP S57136240 A JPS57136240 A JP S57136240A JP 2152981 A JP2152981 A JP 2152981A JP 2152981 A JP2152981 A JP 2152981A JP S57136240 A JPS57136240 A JP S57136240A
Authority
JP
Japan
Prior art keywords
computer
switching
peripheral
information output
signal system
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
JP2152981A
Other languages
Japanese (ja)
Inventor
Fumio Masuda
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 JP2152981A priority Critical patent/JPS57136240A/en
Publication of JPS57136240A publication Critical patent/JPS57136240A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Multi Processors (AREA)

Abstract

PURPOSE:To attain dynamic switching between an electronic computer and a peripheral device, by carrying out the switching after deciding the presence or absence of the use of a signal system by a switchig device in case plural peripheral devices with which two electronic computers are connected to a common input/output signal system have an information output request. CONSTITUTION:Electronic computers 1 and 2 of the 1st and 2nd systems are connected to peripheral devices 1r-ir via a switching device 3 and a common input/output signal system 11. In case the computer 1 delivers the information to the device ir, the computer 1 delivers the device number of the ir. Thus the device 3 stores this device number into an input buffer 4. A gate controller 8 decides the information output request that is given from the computer 1 or 2. Then a gate 6 is opened as long as the computer 2 uses no system 11 to perform the output of imformation between the computer 1 and the device ir. When the computer 2 uses the system 11, a busy signal is supplied to the computer 1. This switching is not carried out fixedly but carried out dynamically every time when an information output is given to the peripheral device from the computer.
JP2152981A 1981-02-18 1981-02-18 Peripheral device switching device Pending JPS57136240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2152981A JPS57136240A (en) 1981-02-18 1981-02-18 Peripheral device switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2152981A JPS57136240A (en) 1981-02-18 1981-02-18 Peripheral device switching device

Publications (1)

Publication Number Publication Date
JPS57136240A true JPS57136240A (en) 1982-08-23

Family

ID=12057478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2152981A Pending JPS57136240A (en) 1981-02-18 1981-02-18 Peripheral device switching device

Country Status (1)

Country Link
JP (1) JPS57136240A (en)

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