I love this. It always mildly tickles me when retrocomputer designs use anachronistic processors way more powerful than the CPU in their design - in this case,

I love this. It always mildly tickles me when retrocomputer designs use anachronistic processors way more powerful than the CPU in their design - in this case, there’s a ATmega644 as a keyboard controller (64K ROM - although only 4K RAM, up to 20MHz) and presumably something pretty powerful in the display board.