In case you've never heard of this hardware project, which is an interesting open-source project that emulates consoles, computers and arcade boards via FPGA. Here are a couple of starter links...
https://misterfpga.org/
https://www.retrorgb.com/mister.html
https://misteraddons.com/
http://www.cgquarterly.com/lets-build-a-basic-mister-fpga-console-part-1/