JPS55146529A - Bus supervisory device - Google Patents

Bus supervisory device

Info

Publication number
JPS55146529A
JPS55146529A JP5463879A JP5463879A JPS55146529A JP S55146529 A JPS55146529 A JP S55146529A JP 5463879 A JP5463879 A JP 5463879A JP 5463879 A JP5463879 A JP 5463879A JP S55146529 A JPS55146529 A JP S55146529A
Authority
JP
Japan
Prior art keywords
data
bus line
bus
written
interface
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
JP5463879A
Other languages
Japanese (ja)
Other versions
JPS6223339B2 (en
Inventor
Kenichi Maeda
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 JP5463879A priority Critical patent/JPS55146529A/en
Publication of JPS55146529A publication Critical patent/JPS55146529A/en
Publication of JPS6223339B2 publication Critical patent/JPS6223339B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To make it possible to easily monitor a bus line, by providing an interface to a bus line, and storing and reading a series of data in accordance with a command of a data on the bus line.
CONSTITUTION: A bus supervisory device is connected to a bus line by a connection part 1 to the bus line and an interface part 2. A collection control part 3 selects a part or all of the signals of the bus, and a memory control part 5 writes its data. The memory part has a suitable capacity, by which when it has been written up to the uppermost address, it is written from the lower rank over again. When a data on the bus has become a specific pattern, a trigger pulse is generated by a trigger generating part 4, write of a data is halted, a data which is stored is read out in due order, and it is output to the bus line 10 or the peripheral equipment 90. Thus, a data error is monitored.
COPYRIGHT: (C)1980,JPO&Japio
JP5463879A 1979-05-02 1979-05-02 Bus supervisory device Granted JPS55146529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5463879A JPS55146529A (en) 1979-05-02 1979-05-02 Bus supervisory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5463879A JPS55146529A (en) 1979-05-02 1979-05-02 Bus supervisory device

Publications (2)

Publication Number Publication Date
JPS55146529A true JPS55146529A (en) 1980-11-14
JPS6223339B2 JPS6223339B2 (en) 1987-05-22

Family

ID=12976306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5463879A Granted JPS55146529A (en) 1979-05-02 1979-05-02 Bus supervisory device

Country Status (1)

Country Link
JP (1) JPS55146529A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880751A (en) * 1981-11-06 1983-05-14 Mitsubishi Electric Corp Data processor
JPS60189545A (en) * 1984-03-09 1985-09-27 Toshiba Corp Logical device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216142A (en) * 1975-07-28 1977-02-07 Fujitsu Ltd Data processing system with bus information logging function
JPS5324742A (en) * 1976-08-20 1978-03-07 Hitachi Ltd Interface monitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216142A (en) * 1975-07-28 1977-02-07 Fujitsu Ltd Data processing system with bus information logging function
JPS5324742A (en) * 1976-08-20 1978-03-07 Hitachi Ltd Interface monitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880751A (en) * 1981-11-06 1983-05-14 Mitsubishi Electric Corp Data processor
JPS60189545A (en) * 1984-03-09 1985-09-27 Toshiba Corp Logical device

Also Published As

Publication number Publication date
JPS6223339B2 (en) 1987-05-22

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