JPS6450153A - Service request system in gpib communication system - Google Patents

Service request system in gpib communication system

Info

Publication number
JPS6450153A
JPS6450153A JP62206951A JP20695187A JPS6450153A JP S6450153 A JPS6450153 A JP S6450153A JP 62206951 A JP62206951 A JP 62206951A JP 20695187 A JP20695187 A JP 20695187A JP S6450153 A JPS6450153 A JP S6450153A
Authority
JP
Japan
Prior art keywords
service request
bit
side device
serial poll
communication 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
JP62206951A
Other languages
Japanese (ja)
Inventor
Yoji Akase
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
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 filed Critical NEC Corp
Priority to JP62206951A priority Critical patent/JPS6450153A/en
Publication of JPS6450153A publication Critical patent/JPS6450153A/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
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling

Abstract

PURPOSE:To simplify the processing of a master side device by retrieving periodically a service request bit of plural slaves and receiving a service request. CONSTITUTION:In addition to an RSV bit prescribed by a GPIB system, a service request bit 232 for showing a service request state is provided on a user open bit 230. On the other hand, in a master side device 1, a processor 12 executes periodically a serial poll, reads out successively a status byte of each slave side device 2, detects a state of the bit 232, and when the device to which the bit 232 is set is detected in the course of the serial poll, the serial poll is suspended, and a service request is received.
JP62206951A 1987-08-19 1987-08-19 Service request system in gpib communication system Pending JPS6450153A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62206951A JPS6450153A (en) 1987-08-19 1987-08-19 Service request system in gpib communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62206951A JPS6450153A (en) 1987-08-19 1987-08-19 Service request system in gpib communication system

Publications (1)

Publication Number Publication Date
JPS6450153A true JPS6450153A (en) 1989-02-27

Family

ID=16531721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62206951A Pending JPS6450153A (en) 1987-08-19 1987-08-19 Service request system in gpib communication system

Country Status (1)

Country Link
JP (1) JPS6450153A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018159608A (en) * 2017-03-22 2018-10-11 東京エレクトロン株式会社 Wafer inspection device and method for diagnosing wafer inspection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54126435A (en) * 1978-03-24 1979-10-01 Nec Corp Contention control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54126435A (en) * 1978-03-24 1979-10-01 Nec Corp Contention control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018159608A (en) * 2017-03-22 2018-10-11 東京エレクトロン株式会社 Wafer inspection device and method for diagnosing wafer inspection device
CN110446937A (en) * 2017-03-22 2019-11-12 东京毅力科创株式会社 The diagnostic method of wafer inspection device and wafer inspection device
KR20190132436A (en) * 2017-03-22 2019-11-27 도쿄엘렉트론가부시키가이샤 Diagnosis method of wafer inspection apparatus and wafer inspection apparatus
TWI763794B (en) * 2017-03-22 2022-05-11 日商東京威力科創股份有限公司 Wafer inspection apparatus and diagnostic method of wafer inspection apparatus

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