Started off with the 'broken' 8720, moved up along the way as they've came out.
http://web.ndak.net/jdgrotte/tqfp648...fpadapter.html
Use it a lot, especially when I need to write 'sloppy' code with a lot of debugging type info. I use the extra pins for LEDs, LCDs, switches, etc.
Later on, clean up the code, get it down to size and put it on a 40 pin version of the '8723 (i.e. 18F452/4620/4685, whatever). Have a few of a second version that'll allow the '8723 to plug into a 28-pin socket. Same principle applies.
Very few code changes required as long as I don't use an '8723 specific module or function.
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