JPS54121632A - Interruption request system - Google Patents

Interruption request system

Info

Publication number
JPS54121632A
JPS54121632A JP2954878A JP2954878A JPS54121632A JP S54121632 A JPS54121632 A JP S54121632A JP 2954878 A JP2954878 A JP 2954878A JP 2954878 A JP2954878 A JP 2954878A JP S54121632 A JPS54121632 A JP S54121632A
Authority
JP
Japan
Prior art keywords
bus
signal
idle
interruption request
interruption
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
JP2954878A
Other languages
Japanese (ja)
Other versions
JPS6041782B2 (en
Inventor
Yasunobu Ina
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP53029548A priority Critical patent/JPS6041782B2/en
Publication of JPS54121632A publication Critical patent/JPS54121632A/en
Publication of JPS6041782B2 publication Critical patent/JPS6041782B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Bus Control (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To reduce the number of the interruption request signal line by transmitting the bus idle signal showing the idle state of the common bus from the bus arbiter and monitoring the idle signal through each device to put the interruption request signal on the data bus.
CONSTITUTION: Bus arbiter BA generates the bus idle signal when common bus C-BUS is idle and then puts the signal on bus idle signal line BIL. Each device DVC1 always monitors BIL, and the device requesting the interruption puts the interruption request signal on DB when the bus idle signal emerges in such way that the level of the interruption request is made to correspond to the specified bit of data bus DB to transfer the request signal to central process unit CPU. The CPU decides that the signal on DB is the interruption request signal when the bus idle signal is emerging to carry out the interruption process. Thus, the number of the interruption request signal line with use of BIL.
COPYRIGHT: (C)1979,JPO&Japio
JP53029548A 1978-03-14 1978-03-14 Interrupt request method Expired JPS6041782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53029548A JPS6041782B2 (en) 1978-03-14 1978-03-14 Interrupt request method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53029548A JPS6041782B2 (en) 1978-03-14 1978-03-14 Interrupt request method

Publications (2)

Publication Number Publication Date
JPS54121632A true JPS54121632A (en) 1979-09-20
JPS6041782B2 JPS6041782B2 (en) 1985-09-18

Family

ID=12279178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53029548A Expired JPS6041782B2 (en) 1978-03-14 1978-03-14 Interrupt request method

Country Status (1)

Country Link
JP (1) JPS6041782B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833770A (en) * 1981-08-24 1983-02-28 Sony Corp Program transfer method for digital data
JPS61101898A (en) * 1984-10-25 1986-05-20 松下電工株式会社 Data transmission system for automatic fire alarm system
WO2002099662A1 (en) * 2001-05-30 2002-12-12 Matsushita Electric Industrial Co., Ltd. Transmission apparatus and tramsmission method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833770A (en) * 1981-08-24 1983-02-28 Sony Corp Program transfer method for digital data
JPH0429102B2 (en) * 1981-08-24 1992-05-18
JPS61101898A (en) * 1984-10-25 1986-05-20 松下電工株式会社 Data transmission system for automatic fire alarm system
WO2002099662A1 (en) * 2001-05-30 2002-12-12 Matsushita Electric Industrial Co., Ltd. Transmission apparatus and tramsmission method
US7421527B2 (en) 2001-05-30 2008-09-02 Matsushita Electric Industrial Co., Ltd. Transmission apparatus and transmission method

Also Published As

Publication number Publication date
JPS6041782B2 (en) 1985-09-18

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