It really is fascinating how up to a certain point, it was possible to understand the workings of 90% of the early 8-bit computers. Sadly with the vast improvements in speed and efficient comes a cavernous increase in complexity. While the fundamentals of computer architecture haven&#x27;t changed that much, modern computers are these hugely complex beasts.<p>I&#x27;ve always been captivated by the Homebrew Computer Club and have been considering putting together a set of tutorials which go through the steps of creating a really basic CPU with an FPGA (perhaps a simple RISC-V core?) and writing a toy OS to run on top of it. A lot of this stuff you learn at Univeristy, but not everyone has that opportunity. I&#x27;d like to see a comprehensive guide which walks someone through every step and teaches the fundamentals of computer architecture, hardware design and systems programming in a fun and hands-on way (it&#x27;s how I&#x27;ve always learnt best).<p>Would anyone find a &#x27;Retro PC from scratch&#x27; resource useful?