The commercial coin-op video games have been using the Analog RGB format since they began using color. Most games use the NTSC frequencies of 15,750Hz Horizontal and 60 (actually 59.95) vertical. Some games use 25K horizontal and 70 vertical. Jim ----- The Palmtree BBS 310-453-8726 v.32 Inet: jpoore@pro-palmtree.cts.com