JPS5385136A - Computer undefined instruction detector circuit - Google Patents
Computer undefined instruction detector circuitInfo
- Publication number
- JPS5385136A JPS5385136A JP12577A JP12577A JPS5385136A JP S5385136 A JPS5385136 A JP S5385136A JP 12577 A JP12577 A JP 12577A JP 12577 A JP12577 A JP 12577A JP S5385136 A JPS5385136 A JP S5385136A
- Authority
- JP
- Japan
- Prior art keywords
- computer
- detector circuit
- undefined instruction
- instruction detector
- undefined
- 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
Links
Abstract
PURPOSE: To make undefined instruction detection possible without changing hardware by only changing a microprogram at an instruction system change time in the computer undefined instruction detector circuit using the microprogram control system.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12577A JPS5385136A (en) | 1977-01-05 | 1977-01-05 | Computer undefined instruction detector circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12577A JPS5385136A (en) | 1977-01-05 | 1977-01-05 | Computer undefined instruction detector circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5385136A true JPS5385136A (en) | 1978-07-27 |
Family
ID=11465305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12577A Pending JPS5385136A (en) | 1977-01-05 | 1977-01-05 | Computer undefined instruction detector circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5385136A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0195330A (en) * | 1987-10-07 | 1989-04-13 | Nec Corp | System for detecting undefined instruction code |
-
1977
- 1977-01-05 JP JP12577A patent/JPS5385136A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0195330A (en) * | 1987-10-07 | 1989-04-13 | Nec Corp | System for detecting undefined instruction code |
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