Note that in spite of the disclaimers in the official FAQ, the RasterFLEX-32 *does* also work in the Sun Ultra-1, Ultra-2 and Ultra-Enterprise systems (when they are running in 32-bit mode). The older RasterFLEX-24 may or may not work in those UltraSPARC systems, I have not had the opportunity to try it.
Note that these drivers have also sometimes been successfully used on Solaris 7 and 8 in 32-bit mode (depends on exact hardware), when the latest (2005) Solaris Recommended Patch Cluster has been installed beforehand.
Drivers for Solaris 2.1, Solaris 2.2 or SunOS 4.1.x (RasterFLEX driver version 4.5) are not available here: if you are *very* lucky, you might find them *somewhere* on the 'net.
