The following example shows how you might program the watchdog timer in BASIC:
10REM Watchdog timer example program
20X=Out &H443,1 REM Enable and refresh the watchdog
30GOSUB 1000 REM Task #1, takes 1 second to complete
40X=Out &H443,1 REM Refresh the watchdog
50GOSUB 2000 REM Task #2, takes 1 second to complete
60X=Out &H443,0 REM Disable the watchdog
70 END
1000 REM Subroutine #1, takes 1 second to complete
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1070 RETURN
2000 REM Subroutine #2, takes 1 second to complete
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2090 RETURN
Appendix A Programming the Watchdog Timer 59
