It is configured (in config files) as 'awdc'/'awd', but shows up as 'wdc'/'wd', so that a minimal amount of code had to be modified to make the name change work. This is only intended to be temporary, anyway.
but works on the alpha (since there's currently no floppy drive support).
This is temporary, until /sys/dev/isa/wd.c is properly bus_space_*-ified.