What exactly is overscan? How did it work for OCS-Amigas?
The usual PAL resolution for "fullscreen" OCS games is 320x256, but whilst playing Project X ('93 Edition) in WinUAE I saw the game draws
285 (*2) lines:
How is that possible? What's the maximum possible overscan mode (for playable scrolling games)?
Also the additional pixels don't seem to harm performance (apart from enemy sprites seeming to skip frames if there are too many) - so why didn't everyone use overscan?