CrossRoads:
Flip over diode D1. The intent is for any spikes/etc. on the reset line to get bypassed into the Vcc line.
Oh, ok... Must have misinterpreted what you wrote...
Planning to connect some external parts to this? I would add another header or other means to connect +5, Gnd to off board devices.
The FTDI and AVR header can be used as well.
Yes, I wanted to get the basics first. This board is to experiment to see how the 644 will do in a bigger project. Wanting to learn more about standalone micros before I make any PCBs for the larger project.
Thanks for your help CrossRoads.