JPS55118293A - System split constitution system - Google Patents

System split constitution system

Info

Publication number
JPS55118293A
JPS55118293A JP2603479A JP2603479A JPS55118293A JP S55118293 A JPS55118293 A JP S55118293A JP 2603479 A JP2603479 A JP 2603479A JP 2603479 A JP2603479 A JP 2603479A JP S55118293 A JPS55118293 A JP S55118293A
Authority
JP
Japan
Prior art keywords
line
input
control unit
split
switch
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.)
Granted
Application number
JP2603479A
Other languages
Japanese (ja)
Other versions
JPS6222516B2 (en
Inventor
Hiroichi Otsuka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2603479A priority Critical patent/JPS55118293A/en
Publication of JPS55118293A publication Critical patent/JPS55118293A/en
Publication of JPS6222516B2 publication Critical patent/JPS6222516B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To enable to use the ON-line and OFF-line both systems in split state at the same time, by providing the key switch with the input and output control unit and making ineffective the isolation and the bus selection flip flop control instruction. CONSTITUTION:The input control unit 6 is provided with the off-line key switch 10 gating the isolation signal 5. When this switch 10 is ON and another input to the AND gate inputted with the isolation signal 5 is at ''0'', the isolation signal 5 from another system can be made ineffective. The switch connected to the off-line system bus among two switches 10 in the input and output control unit 6 is turned on for off-line and the two switches 10 are OFF for on-line, allowing to perform the split use of on-line and off-line.
JP2603479A 1979-03-06 1979-03-06 System split constitution system Granted JPS55118293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2603479A JPS55118293A (en) 1979-03-06 1979-03-06 System split constitution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2603479A JPS55118293A (en) 1979-03-06 1979-03-06 System split constitution system

Publications (2)

Publication Number Publication Date
JPS55118293A true JPS55118293A (en) 1980-09-11
JPS6222516B2 JPS6222516B2 (en) 1987-05-18

Family

ID=12182413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2603479A Granted JPS55118293A (en) 1979-03-06 1979-03-06 System split constitution system

Country Status (1)

Country Link
JP (1) JPS55118293A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417403U (en) * 1987-07-20 1989-01-27

Also Published As

Publication number Publication date
JPS6222516B2 (en) 1987-05-18

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