Andrew Kelley wrote: > Install a switch(SPDT) on the developement board with the prog's mclr to > one side, the pic's mclr to the middle, and the 'normal' on board run > mclr. attach the DATA and CLK lines to the pic appropriately. It will > work. Just don't have anything using those two lines or have a > switch(DPDT)(do I HAVE to explain this too?) switching between the two > 'normal' and program positions(switching the data and clk lines out/in > and the regular circuit in/out). If you have a look at the schematics at http://www.dontronics.com/dt001.html (programmer) http://www.dontronics.com/dt101.html (84) http://www.dontronics.com/dt106.html (87x) You will see how to do it for the PIC flash parts with a 4PDT switch. This is done on the SimmStick platform, but can be used with any programmer. Don McKenzie mailto:don@dontronics.com http://www.dontronics.com World's Largest Range of Atmel/AVR and PICmicro Hardware and Software. Free Basic Compiler and Programmer http://www.dontronics.com/runavr.html