JPS57127256A - System for detecting falling of program into loop - Google Patents
System for detecting falling of program into loopInfo
- Publication number
- JPS57127256A JPS57127256A JP56012040A JP1204081A JPS57127256A JP S57127256 A JPS57127256 A JP S57127256A JP 56012040 A JP56012040 A JP 56012040A JP 1204081 A JP1204081 A JP 1204081A JP S57127256 A JPS57127256 A JP S57127256A
- Authority
- JP
- Japan
- Prior art keywords
- program
- output
- loop
- counter
- becomes
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Debugging And Monitoring (AREA)
Abstract
PURPOSE:To detect falling of a program into a loop, by providing a simple circuit additionally without executing a special instruction in the program. CONSTITUTION:When a signal R/W becomes 1, the reset of a counter 8 is released to release the count. However, in the normal operation the signal R/W becomes 0, and the counter 8 is reset before the output is issued to an output terminal CO. When the program falls into a loop, the output of the output terminal CO becomes 1 because the read state continues over T sec, and the inverted output is applied to an enable terminal CE of the counter 8 and a reset terminal R of a processor 6, and the output state of the counter 8 is held in 1, and the processor 6 is returned to the initial state. Simultaneously, an LED9 is lit to indicate the occurrence of falling of the program into a loop to the external.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012040A JPS57127256A (en) | 1981-01-29 | 1981-01-29 | System for detecting falling of program into loop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012040A JPS57127256A (en) | 1981-01-29 | 1981-01-29 | System for detecting falling of program into loop |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57127256A true JPS57127256A (en) | 1982-08-07 |
Family
ID=11794480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56012040A Pending JPS57127256A (en) | 1981-01-29 | 1981-01-29 | System for detecting falling of program into loop |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57127256A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597645A (en) * | 1979-01-17 | 1980-07-25 | Hitachi Ltd | Microprocessor control system |
-
1981
- 1981-01-29 JP JP56012040A patent/JPS57127256A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597645A (en) * | 1979-01-17 | 1980-07-25 | Hitachi Ltd | Microprocessor control system |
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