Ben Eater has a series of videos where he builds an 8 bit computer using actual ...

Ben Eater has a series of videos where he builds an 8 bit computer using actual chips. He starts from first principals and it's pretty amazing to see it come together. Definitely worth watching.

Building an 8-bit breadboard computer!: https://www.youtube.com/playlist?list=PLowKtXNTBypGqImE405J2...