fastata needs the ata3.driver to be started in ordfer to find the stuff on the SECONDARY controller, read the manual and install it properly and all will work fine, and master/slave has nothing to do with it, unless u set 2 drives on same chain to the same ..
anyway i would advice you to check the cables also..
anyway remember to install the ata3.driver and call it before setpatch/blizzkick (if u have blizkick)
scsi.device version should be when you have fastata 50.-1 .
cheers
ps:4 devices is max on fastata ..2 per chain!!