Colin Rileys Blog Colin has an excellent series on making a CPU from scratch in VHDL which served as early inspiration for getting my mCPU going. He also covers DVI/HDMI signalling.
Ken Sherrifs main website. He does a lot of really cool breakdowns but his Arm reverse engineering post (alongside his video) really got me interested in the fact that CPUs aren’t magic, they’re actually pretty simple at a conceptual level – especially the early ones. The complexity is in the additional details.
Indistinguishable from Magic -Manufacturing Modern Computer Chips