I've tried to modify several bootloaders to work with 16F819 and this one is almost working. http://www.microchipc.com/PIC16bootload/16F87xA/ I'm willing to pay for anyone who makes it to work, or any other working with 16F819. I'm in Brazil so please do not ask a big amount of money. Octavio Nogueira Tato Equipamentos Eletr=F4nicos Ltda (11) 5506-5335 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D nogueira@tato.ind.br ICQ# 222558485 BASIC Step - O microcontrolador mais f=E1cil do mercado BASCOM - O mais poderoso compilador BASIC para ATMEL http://www.tato.ind.br ProPic tools - low cost PIC programmer and emulator http://www.propic2.com =20 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=20 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.