JPS5665400A - Memory write tracing device - Google Patents
Memory write tracing deviceInfo
- Publication number
- JPS5665400A JPS5665400A JP14105479A JP14105479A JPS5665400A JP S5665400 A JPS5665400 A JP S5665400A JP 14105479 A JP14105479 A JP 14105479A JP 14105479 A JP14105479 A JP 14105479A JP S5665400 A JPS5665400 A JP S5665400A
- Authority
- JP
- Japan
- Prior art keywords
- address
- memory
- instruction
- circuit
- constitution
- 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 it possible to investigate the address of an instruction word that has destroyed a memory in the generation of a runaway, by reading the memory contents of an instruction address memory part by supervising instruction execution.
CONSTITUTION: The address when CPV access the main memory unit is receoved by receiving circuit 31 of memory write tracing device 3 at the same time and when instruction fetch deciding circuit 32 decides the write address, the address is stored in address memory part 37 through instruction address register 33 and instruction address memory circuit 36 according to the writing to the main memory unit. Smilarly, the address in readout access is stored in memory part 37 by way of data address memory circuit 34, data generation deciding circuit 35, circuit 36, etc., and the instruction execution is supervised. This constitution, the address of an instruction causing memory destruction can be inverstigated easily by the address of memory part 37 in program runaway detection caused by the memory destruction due to a program miss.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14105479A JPS5665400A (en) | 1979-10-31 | 1979-10-31 | Memory write tracing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14105479A JPS5665400A (en) | 1979-10-31 | 1979-10-31 | Memory write tracing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5665400A true JPS5665400A (en) | 1981-06-03 |
Family
ID=15283173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14105479A Pending JPS5665400A (en) | 1979-10-31 | 1979-10-31 | Memory write tracing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5665400A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03252746A (en) * | 1990-03-02 | 1991-11-12 | Nippon Telegr & Teleph Corp <Ntt> | Memory access history preserving system |
-
1979
- 1979-10-31 JP JP14105479A patent/JPS5665400A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03252746A (en) * | 1990-03-02 | 1991-11-12 | Nippon Telegr & Teleph Corp <Ntt> | Memory access history preserving system |
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