When Etherboot 5.0 in ROM loads a mknbi-rom made 5.2 image for the 3c509
NIC, this image executes but is not able to load a NFL menu. If the
3c509 is booted from 5.2 floppy it has no problems loading a NFL menu.
If the NFL menu is replaced with a DOS image or a tomsrtbt image just
before chaining, there is no problem either.  So it seems that 5.2
Etherboot has problems loading NFL images when it's chained to from 5.0.
Bizarre.
