You can use Picasso 4 with MorphOS 1.4.5 aswell.
http://v4.cybergraphx.de/CGX4 4.3 rc6 Update
This update will allow CyberGraphX4 owners to use CVision3D/CVision64/PicassoIV
drivers with MorphOS on dual boot setups.
Above cards have been successfully tested with PowerUp MorphOS1.4.5 and A4000T/CSPPC,
other drivers might work as well.