Use a switch by change not on/off status.

[muddy0409]

I have used the following on a few occasions quite successfully:

Lets say the switch is on portc.3

SW VAR PORTC.3




WHILE SW = 0 : WEND 'THIS WILL CONTINUALLY LOOP AS LONG AS THE INPUT IS LOW, MAKE IT SW = 1 TO DETECT
'GOING LOW.
' ASSUMES THAT ALL YOU ARE DOING IS WAITING FOR A SWITCH CHANGE
'ACCORDING TO THE MANUAL THIS LOOP CHECKS ABOUT 50 TIMES A SECOND
'SO IT SHOULD SEE THE CHANGE WITHIN 1/50 OF A SECOND.

DO SOMETHING HERE 'THIS IS WHAT YOU WANT TO DO AT THE SWITCH CHANGE