How Exile draws the world

The previous article looked at how Exile (BBC Micro, 1988) generates its 256×256-tile world from about 500 bytes of code. This one is about what you actually see: how the graphics are stored, how another handful of bytes becomes a red rock face here and a green bush there, and how the sprite plotter gets it all onto the screen fast enough to scroll on a 2MHz 6502. very piece of art in the game —…