NES Graphics Upgrade Parallax Scrolling ANES Mod
Original NES hardware shipped with a graphics processor that handled everything through a single chip and a set of strict rules. Backgrounds stayed flat. Sprites capped out at eight per horizontal line. Colors came from a fixed palette with tight limits on how many could appear together on screen. Nintendo built in four extra pins on that processor and left them grounded, effectively locking away a path to more complex visuals. One modder recently put those pins to work and gave the console a second graphics processor.