I have a word that I wish to trigger on pin change:

: example ." Hello, world! " ;i

I am using External Interrupt Request 1 , which is interrupt vector no. 3 according to page 65 of the datasheet and this diagram I use.

' example 3 int! ei

When I try to change the value of a pin (pin 3 in this case), nothing happens.

Am I doing something wrong?