Throughout my childhood, I grew up learning about electronics and computers. I am starting to get to the point where I want to incorporate my knowledge of both into a single project. I have tried using Arduinos and Raspberry Pis, but find myself in the usual scenario where I want to re-invent the wheel myself. Where is the best place that I can go to get the most comprehensive knowledge base about how computers, both old-school 4-bit and modern 86 and 64-bit machines work? Looking around, I have not really found much of what I was looking for. Projects like Big Mess O' Wires' custom 4-bit CPU and other projects where people made a computer on a breadboard and stuck linux on it are of the most interest, however things like USB interfacing, LCD/LED displays and touch input would be great too!
Thanks in advance,