Make sure that before installing the picasso iv you have removed all monitor files from devs:monitors except for ntsc and/or pal. Then install the picasso iv card and attach a monitor to the picasso iv card. Power on the system. If the flickerfixer of the piv is doing it's job, all ntsc output is shown through the piv. Then install picasso96. After that you can use 8/16/24 bit modes.