DT_INTS-14 , Elasped_INT, and 16F87 code not working

[richard]

the problem is with the stack . core 14 devices have a 8 level hardware stack , 4 levels can be used by pbp leaving 4 for your program. an interrupt will use 1 of these , a gosub in the interrupt uses another .
its not impossible to do but you need to be mindful of the limitations

[mark_s]

I seem to remember when using pic16F's and interrupt on change you had to read portb to clear a mismatch?

dummy = portb
@ INT_RETURN

[Dave]

Mark_s, You are correct, But who reads the data sheets anyways? Henrick and Richard, you are both correct, Also there are the extra cycles used up in the stack execution.