> I think you missed the part where he said "whole screen". It won't be trivial as > those graphics are drawn with sprites. All three tilemaps are used for > parallax-scrolling backgrounds. (Some games display HUD with a tilemap and you can > hide it by commenting a single line in MAME source.)
Yeah, you'd need to patch out the code that writes the scores and status graphics to object RAM. Otherwise you could find the corresponding sprite numbers and filter them out in the driver's sprite drawing routines. Simple