Comment by mikeayles

Author here:

I pulled inspiration from this port to a vectrex: https://www.youtube.com/watch?v=VuVnoqFF3II, there is a wayback machine link to the authors writeup credited in my writeup.

I have seen a lot of ports of DOOM on overpowered Windows based test equipment, particularly the Keysight MXA's, but they're just using them as a computer. Spectrum DOOM though. Could it be done by taking snapshots of a waterfall plot?