Florence beta 1 anaconda fails to recognize 3c450 card (uses 3c59x driver). I try to manually configure networking using netconfig post-install. I can do so, but the card is not recognized post-netconfig. I must manually modprobe 3c59x to get the card to work. While RHL 7 also failed to see the card during the install, netconfig did handle the configuration properly post-install without requiring manual modprobe commands.
lspci -n output?
This was almost certainly the 'mapped to 3c90x that didn't exist' problem.