You have some time to spare? Very well. You're going to need it. What Steven Hugg has been compiling since 2017 touches on a whole bunch of 8-bit icons and unfortunately only landed on our screen last week.
On his site 8bitworkshop, Steven offers 4 on-topic books as well as lots of detailed knowledge on the usual suspects: VCS, NES, Apple ][+, ColecoVision, MSX but also Arcade systems like VIC Dual, Midway 8080 or Galaxian.
But it gets really meaty 🥩 when you start the JS based IDE. Here you can emulate not only the mentioned systems, but a lot more. In addition you can run Verilog directly in an emulator.
For each supported platform there is a whole set of examples, whose source you can edit and try out directly in the browser. In combination with Steven's books - for example Designing Video Game Hardware in Verilog - the whole thing totally makes sense. Fantastic learning resource.
Unfortunately we missed it completely, but definitely the recommendation of the week for all those who want to learn something old new.