> Clear, but USPP is written compleatly in Python itself and provides a > universal interface method to access the serial port. On windoze USPP requires win32all (which is defintely not pure Python), exactly like Chris Liechti library that I use for XWisp. And it is more limited, for instance no access to the handshake lines. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.