JPS55166748A - Detection system for computer program runaway - Google Patents
Detection system for computer program runawayInfo
- Publication number
- JPS55166748A JPS55166748A JP7353879A JP7353879A JPS55166748A JP S55166748 A JPS55166748 A JP S55166748A JP 7353879 A JP7353879 A JP 7353879A JP 7353879 A JP7353879 A JP 7353879A JP S55166748 A JPS55166748 A JP S55166748A
- Authority
- JP
- Japan
- Prior art keywords
- parity
- program
- memory
- program data
- program runaway
- 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
- Debugging And Monitoring (AREA)
Abstract
PURPOSE: To make a check on a program runaway by previously setting abnormal parity at an unused area in a memory and by deciding the program runaway when the abnormal parity is found by checking.
CONSTITUTION: Every time program data (f) are read out of memory 80, parity (g) in memory 81 corresponding to the program data is read out and then checked by checking circuit 9. When the result of the check shows dissidence, the program data are considered to be incorrect ones and when coincidence, they are processed as they are by processor 1 being regarded as normal ones. If a jump instruction set as the final instruction is not generated when the program processing advances until the final instruction, access to an unoccupied area is attained and abnormal parity read by the access to the unoccupied area is detected by the checking circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7353879A JPS55166748A (en) | 1979-06-13 | 1979-06-13 | Detection system for computer program runaway |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7353879A JPS55166748A (en) | 1979-06-13 | 1979-06-13 | Detection system for computer program runaway |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55166748A true JPS55166748A (en) | 1980-12-26 |
Family
ID=13521101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7353879A Pending JPS55166748A (en) | 1979-06-13 | 1979-06-13 | Detection system for computer program runaway |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55166748A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03108035A (en) * | 1989-09-21 | 1991-05-08 | Mitsubishi Heavy Ind Ltd | Program self-diagnostic system using memory check |
-
1979
- 1979-06-13 JP JP7353879A patent/JPS55166748A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03108035A (en) * | 1989-09-21 | 1991-05-08 | Mitsubishi Heavy Ind Ltd | Program self-diagnostic system using memory check |
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