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CHAPTER 2 DEPENDENCE FUNCTIONS
■ Notes on STEP Command
● Exceptional Step Execution
When executing the instructions listed in the notes on the GO command as invalid breakpoints and abnormal
breakpoints, such instructions and the next instruction are executed as a single instruction. Furthermore, if
such instructions are continuous, then all these continuous instructions and the next instruction are executed
as a single instruction.
● Step Execution that won't Break
Note that no break occurs after step operation when both the following conditions are met at one time.
• When step instruction longer than 2 bytes length and last code ends at even address
• When breakpoint already set at last address (This "already-set" breakpoint is an invalid breakpoint that
won't break, because it has been set at an address other than the starting address of an instruction.)
■ Controlling Watchdog Timer
It is possible to select "No reset generated by watchdog timer counter overflow" while executing a program
using the GO, STEP, CALL commands.
Use the ENABLE WATCHDOG, DISABLE WATCHDOG commands to control the watchdog timer.
- ENABLE WATCHDOG : Reset generated by watchdog timer counter overflow
- DISABLE WATCHDOG : No reset generated by watchdog timer counter overflow
The start-up default in this program is "Reset generated by watchdog timer counter overflow".
[Example]
>DISABLE WATCHDOG
>GO