Hacking into some platform makes very tied to it. I still recall how to program smooth scrolling in EGA/VGA. It becomes an explored world, and is ARM good for being tied to? ARM has an ongoing problem of being proprietary, and RISC-V is to come as a solution. If ARM is neither past nor future, then we should not getting tied to it.

Maybe get ITX-Llama and let parent and kid be tied to all the same platform? Have something common to discuss, something common to play. And MiniMig or Apollo A600 may do the trick. CheckMate Retro IPS display. It is past, but great past. Alive in our souls.