Here are links to my YouTube channel playlists involving my programming efforts on old hardware.
Spin Pac-Dizzy playlist
A specific project developing a version of the classic SpinDizzy on Pac-Man hardware
Arcade hardware programming
Pac-Man hardware demo coding efforts
Vectrex all programming attempts
Playlist with my recorded attempts at programming the Vectrex, from my first moving line on screen!
Stunt Man – A vectrex homebrew game
Playlist with my progress creating a tribute to the classic ttl game Atari Stunt Cycle, which will hopefully become a full release game.
Hurray Banana's Vectrex Homebrew 