JPS55121559A - Microprocessor analyzer - Google Patents
Microprocessor analyzerInfo
- Publication number
- JPS55121559A JPS55121559A JP2891179A JP2891179A JPS55121559A JP S55121559 A JPS55121559 A JP S55121559A JP 2891179 A JP2891179 A JP 2891179A JP 2891179 A JP2891179 A JP 2891179A JP S55121559 A JPS55121559 A JP S55121559A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- programs
- circuit
- substitution
- desired programs
- 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
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To make possible a test with memory 8 packaged in a unit, by making it possible to replace in the memory the range of random addresses that the memory occupies under address converting and switching control, when the total of substitution-desired programs does not exceed the capacity of memory 8.
CONSTITUTION: Memory 8 is provided with the capacity equivalent to the total of at least substitution-desired programs in memory 4. Address converting circuit 9 discriminates substitution-desired programs from other programs in memory 4 and makes substitution-desire addresses in memory 4 correspond to those in memory 8. Switching circuit 7 switches data bus 21 connected to microprocessor 1 to the memory 4 side or memory 8 side. Switching control circuit 10 controls circuit 7 by commands from circuit 9. For the purpose, the substitution-desired programs in memory 4 are replaced in memory 8; when substitution-desired programs in memory 4 are replaced, circuit 9 connects programs in memory 8 to processor 1 and when other programs in memory 4, circuit 9 connects programs in memory 4 to processor 1 for the test.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2891179A JPS55121559A (en) | 1979-03-13 | 1979-03-13 | Microprocessor analyzer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2891179A JPS55121559A (en) | 1979-03-13 | 1979-03-13 | Microprocessor analyzer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55121559A true JPS55121559A (en) | 1980-09-18 |
Family
ID=12261576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2891179A Pending JPS55121559A (en) | 1979-03-13 | 1979-03-13 | Microprocessor analyzer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55121559A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180069A (en) * | 1984-09-28 | 1986-04-23 | Yokogawa Hokushin Electric Corp | Program rom emulator |
-
1979
- 1979-03-13 JP JP2891179A patent/JPS55121559A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180069A (en) * | 1984-09-28 | 1986-04-23 | Yokogawa Hokushin Electric Corp | Program rom emulator |
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