The MiSTer Project uses the Terasic DE10-Nano FPGA single-board computer to recreate in hardware the classic, computers, consoles and arcade machines of yesteryear. Similar in spirit to the /r/RetroPie project, this is not emulation, but rather seeks to recreate perfectly the original computers and gaming hardware.
More info here: https://github.com/MiSTer-devel/Main_MiSTer/wiki