Doom on an LED billboard

Help support my channel; Digital2Go: Yes, this runs Doom too! Long before my days of performing wiring magic on an NCR ATM to play it, I got it running on a truck-mounted LED billboard! This required lots of custom code to achieve, and a couple of custom Linux drivers, to be able to treat the sign as a large screen (I called the control unit a glorified bit-banger after I’d finished with it!) The truck is for a company called Digital 2 Go,