> but given that the only output is a paper teletype, displaying it would be a problem

You are in a maze of twisty passages, all alike. A cacodaemon floats by, hissing.

I wonder which would be faster: computing a frame, or printing it? If you could print one frame at a time, you could make a flip-book animation.

And given the NES emulator example, take half an hour per frame.