Fujitsu SOFTUNE F2 MC-16 User Manual page 89

- Abnormal Breakpoint
Setting a breakpoint at the instruction immediately after string instructions listed below, may cause a
break in the middle of the string instruction without executing the instruction to the end.
2
F MC-16L/16LX/16/16H
2
F MC-16F
■ 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 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
- DISABLE WATCHDOG
The start-up default in this program is "Reset generated by watchdog timer counter overflow".
[Example]
>DISABLE WATCHDOG
>GO
CHAPTER 2 DEPENDENCE FUNCTIONS
MOVS
SECQ
WBTS
MOVSWI
SECQWI
MOVSD
SECQD
FILS
FILSW
MOVS
SECQ
WBTS
MOVSWI
SECQWI
MOVSD
SECQD
FILS
FILSW
MOVM
: Reset generated by watchdog timer counter overflow
: No reset generated by watchdog timer counter overflow
MOVSW
SECQW
MOVSI
SECQI
WBTC
MOVSWD
SECQWD
FILSI
FILSWI
MOVSW
SECQW
MOVSI
SECQI
WBTC
MOVSWD
SECQWD
FILSI
FILSWI
MOVMW
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