Michael Abrash's book Zen of Assembly Language: Volume I (1989) contains a reference to a column in a computer magazine, though the actual source is not cited.
I recall a debate in the letters column of one computer magazine about exactly how quickly text can be drawn on a Color/Graphics Adapter screen without causing snow. The letter writers counted every cycle in their timing loops, just as the author in the story that started this chapter had. Like that author, the letter writers had failed to take the prefetch queue into account.
The question is, does anyone know the magazine, column or issue he might have been referring to, and also is that archived anywhere online?