Be careful about ISP with JDM, you could burn out the serial port quite easily. Ask me how I know about that :-) Cheers, Ling SM > Here is the ISP add on for the JDM Programmer. > The ICPROG software will still programme it just fine. > > Paul Harris > > > > I have ICPROG software and a JDM hardware to program a > > 16f84. > > > > I built a circuit that reads a RS232 and write the > > input to a LCD hd44780. > > > > I need to reprogram the 16f84 without moving the chip > > to the JDM and then back to the circuit. > > > > How can I implement a in circuit serial programing? > > Which software will I need? > > > > Miquel > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads