FastATA III works fine with OS4 for me.
For the floppy drive, there is a fix that has to be enabled.
Uncomment the line in A1200Kickstart (Or something similar)
that deals with this.
It will be obvious when you see it.
With Elbox drivers, I have had working Voodoo5500, Radeon9200, Spider II USB, Fastethernet Card, and a Terratec 512i sound card.
Currently can't get the sound card to work properly since I upgraded from SX to TX, but that is being looked into by Elbox.
