JPS55146529A - Bus supervisory device - Google Patents
Bus supervisory deviceInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-05-02 JP JP5463879A patent/JPS55146529A/en active Granted
Patent Citations (2)
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)
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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