Do you just want to check whether it's being seen by the system, or actually put it through its paces? If the former, then just type "cpu" in to a shell and it will show whether or not you have an FPU. OR you could use WhichAmiga to get more detailed info.
If you want to actually put it through its paces, then you could use a 3D rendering package which uses the FPU and check it works. I can't actually think of any other software which uses the FPU ;-)
--
moto
