Last part of the interrupt question:

In the PBP manual it says: on interrupt goto lable.
Do i have to check in the lable for state on port INT0 INT1 INT2 example:

On interrupt goto led

Code:
LED:
IF PORTB.0 = 1 Then GOTO LED100
ELSE
  IF PORTB.1  = 1 Then GOTO LED200
ELSE
  IF PORTB.2  = 1 Then GOTO LED300
ENDIF