This is mainly for the attention on Micheal Karas..

I've decided that I'm going to get one of the f015 starter kits and make my own header to fit 40pin Dil and plcc for chips running at 5 volts.

Now the I/O pins will take 5v ,and the cpu runs on 3v , so presumably max signal input to the ADC will be 3 (V+) aswell , so ADC inputs will need to scaled by resistors,and if so what value as not to affect the input impedance and timing.Is there anything else relevant aswell?..Something easy to overlook

thanks