In the Arizona Microchip site they wrote: Microhip is studing to make a MPLAB version for Linux, but the company XXXXXX have a solution for this. But in the XXXX's page say in the HOME : "We have not SW's for Linux" Well, I've tryed to install the Mplab for Win16 in the wine but when acessing serial port it craches the communication, Solution: a upgrade in my computer to a KII 500, and its very well The serial port acess may be acelerated? Antonio Todo Bom Brazil's OpenSystems Users