JPS5475968A - Request selective acceptance system - Google Patents

Request selective acceptance system

Info

Publication number
JPS5475968A
JPS5475968A JP14262377A JP14262377A JPS5475968A JP S5475968 A JPS5475968 A JP S5475968A JP 14262377 A JP14262377 A JP 14262377A JP 14262377 A JP14262377 A JP 14262377A JP S5475968 A JPS5475968 A JP S5475968A
Authority
JP
Japan
Prior art keywords
request
processor
acceptance
becomes
signal
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
JP14262377A
Other languages
Japanese (ja)
Inventor
Misao Miyata
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 JP14262377A priority Critical patent/JPS5475968A/en
Publication of JPS5475968A publication Critical patent/JPS5475968A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To accept preferentially a request by a simple circuit, by providing signal lines which are connected to plural request sources respectively and are set to specific states by request sources according to the kind of request issued from request sources.
CONSTITUTION: Now, when the request acceptance priority is in the order of magnetic tape MT30, magnetic disc 40, and typewriter 50 and processor 61 requests the use of MT30, ready signal lines 261 and 262 are "0", and request signal line 141 becomes "1". Then, control circuit 10 becomes aware of request occurrence by common line 140, and acceptance signal line 150 is made to "1". When the request of processor 61 is accepted, signal line 151 becomes "0", and no acceptance signal is sent to next precessor 62. When processors 61, 62 and 63 request type 50, disc 40 and MT30 respectively, ready signal lines 261 and 262 from processor 63 become "0". And the acceptance signal from control circuit 10 passes through processors 61 and 62, thereby accepting first the request of processor 63.
COPYRIGHT: (C)1979,JPO&Japio
JP14262377A 1977-11-30 1977-11-30 Request selective acceptance system Pending JPS5475968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14262377A JPS5475968A (en) 1977-11-30 1977-11-30 Request selective acceptance system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14262377A JPS5475968A (en) 1977-11-30 1977-11-30 Request selective acceptance system

Publications (1)

Publication Number Publication Date
JPS5475968A true JPS5475968A (en) 1979-06-18

Family

ID=15319635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14262377A Pending JPS5475968A (en) 1977-11-30 1977-11-30 Request selective acceptance system

Country Status (1)

Country Link
JP (1) JPS5475968A (en)

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