Getting a piece of electronics to run doom (1993) is a classic project in hobby electronics, and so far people have gotten doom to run on pretty much anything, including analog oscilloscopes. However, in all cases that I have seen, the only part of the oscilloscope that is really "running" doom is the CRT display, which is hooked directly to an external computer a la 90's game consoles.Meanwhile, people also have managed to get analog oscilloscopes to display some pretty extraordinary and dynamic art by carefully adding together signals according to the principle of lissajous curves and sending those signals through the scope's regular input channels (a good example of this is this guy Which makes me wonder: is it possible to play doom on an analog oscilloscope using graphics created only using lissajous figures?My initial thought is that it should be possible, but it would be very computationally expensive. You would still need an external digital computer, but you'd have to be constantly performing in real time some kind of complicated mathematical transformation on doom's graphics and sending the output through a DAC to the oscilloscope.