Indeed, more than you ever wanted to know about the A20 line: https://aeb.win.tue.nl/linux/kbd/A20.html https://aeb.win.tue.nl/linux/kbd/A20.html (from your art

Indeed, more than you ever wanted to know about the A20 line: https://aeb.win.tue.nl/linux/kbd/A20.html https://aeb.win.tue.nl/linux/kbd/A20.html (from your article) This is one hell of a rabbit hole...