> Tell VID.v to display plane 2. By doing so, the whole screen is > switched to the new content in a jiffy of a second. Interesting. Sinclair QLs' Designers conceived similar idea of two planes switchable in a 50/60th of a second by H/W register. Regretably not much used by S/W developers. -- Tomas Kral <thomas.kral at email.cz>