Internet Sites of Interest
Whenever I start a new project I scrounge around the Internet to see what other people have done or to help verify an idea that I had. This usually helps me from completely reinventing the wheel and avoid pitfalls that other folks have run into. Below are links that I have found helpful in one way or another on this project.
6502.org - The 6502 processor resource. This site really is the holy grail for the 6502 processor. They have tutorials, links to projects, documentation and much much more. This is another site I would recommend you visit on your journey.
Blondihacks - Blondihacks is a blog run by Quinn Dunki. She has done a great job interfacing a 6502 processor while showing her journey along the way. She also has information of a Hex display and printed circuit board fabrication and some other stuff. It is a good read and I recommend it to anyone interested in the topic.
WilsonMinesCo.com - This site has a great tutorial on using the 6502 processor. He lays out clocking, address decoding, I/O IC's, Displays, Programming and much much more. It is a treasure trove of information just waiting for the would be 6502 interface maker. Check it out, it will be worth your time and effort.