Al compilar sale esto:
MPLAB C18 v3.40 (feature limited)
Copyright 2000-2011 Microchip Technology Inc.
This version of MPLAB C18 does not support the extended mode
and will not perform all optimizations. To purchase a full
copy of MPLAB C18, please contact your local distributor or
visit buy.microchip.com.
Saludos.