I'm aware that some of you have already found and made good use of it, and I have mentioned it a few times, but I don't believe I've ever actually "announced" it on this forum...
So, yeah, I made a Kicad symbol library that contains a bunch of 6502 and 6502-adjacent chips. I will be maintaining it for the foreseeable future, and I'm always happy to take requests to add new chips if people want them and (if necessary) can supply appropriate documentation. The library is licensed under LGPL 2.1, which makes it 100% kosher for use in your own projects, commercial or not.
You can find it here:
https://github.com/Alarm-Siren/6502-kicad-libraryI don't know if there's a suitable place on the main website, but if there is please feel free to add it as a community resource if you consider it appropriate to do so.
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Want to design a PCB for your project? I strongly recommend
KiCad. Its free, its multiplatform, and its easy to learn!
Also, I maintain KiCad libraries of
Retro Computing and
Arduino components you might find useful.