JPS5426631A - Inspection system of rom - Google Patents
Inspection system of romInfo
- Publication number
- JPS5426631A JPS5426631A JP9190977A JP9190977A JPS5426631A JP S5426631 A JPS5426631 A JP S5426631A JP 9190977 A JP9190977 A JP 9190977A JP 9190977 A JP9190977 A JP 9190977A JP S5426631 A JPS5426631 A JP S5426631A
- Authority
- JP
- Japan
- Prior art keywords
- rom
- inspection system
- content
- external
- inspection instruction
- 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
Abstract
PURPOSE: To prevent the content from being fed to external with the condition that the inspection instruction is given from external terminals, by reading out the content of ROM while the output of the instruction decoder is inhibited, when the control circuit judges that the inspection instruction input is present at the application of power supply.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9190977A JPS5426631A (en) | 1977-07-29 | 1977-07-29 | Inspection system of rom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9190977A JPS5426631A (en) | 1977-07-29 | 1977-07-29 | Inspection system of rom |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5426631A true JPS5426631A (en) | 1979-02-28 |
JPS5713959B2 JPS5713959B2 (en) | 1982-03-20 |
Family
ID=14039698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9190977A Granted JPS5426631A (en) | 1977-07-29 | 1977-07-29 | Inspection system of rom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5426631A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5525868A (en) * | 1978-08-14 | 1980-02-23 | Nec Corp | Diagnostic system for control memory |
JPS56116156A (en) * | 1980-02-20 | 1981-09-11 | Toshiba Corp | Circuit check system for information processor |
JPS63153800A (en) * | 1986-12-17 | 1988-06-27 | Nec Corp | Check circuit for information on inside of rom |
JPH0540703A (en) * | 1991-01-16 | 1993-02-19 | Mitsubishi Electric Corp | Microprocessor |
-
1977
- 1977-07-29 JP JP9190977A patent/JPS5426631A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5525868A (en) * | 1978-08-14 | 1980-02-23 | Nec Corp | Diagnostic system for control memory |
JPS5931800B2 (en) * | 1978-08-14 | 1984-08-04 | 日本電気株式会社 | Control memory diagnostic method |
JPS56116156A (en) * | 1980-02-20 | 1981-09-11 | Toshiba Corp | Circuit check system for information processor |
JPS63153800A (en) * | 1986-12-17 | 1988-06-27 | Nec Corp | Check circuit for information on inside of rom |
JPH0540703A (en) * | 1991-01-16 | 1993-02-19 | Mitsubishi Electric Corp | Microprocessor |
Also Published As
Publication number | Publication date |
---|---|
JPS5713959B2 (en) | 1982-03-20 |
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