I used the sparc floppy driver to create a floppy driver for
sparc64.  I've been doing a fair bit of work on the latter, including
fixing the problem with formatting.  However, now it is time to find
out if I broke it for sparc.  I'm looking for people to test it.  All
you need to do is cp sys/arch/sparc64/fdc.c sys/arch/sparc/fd.c, and
rebuild your kernel.  Then try it out (read, write, eject, and
format).  To format a floppy, use fdformat, then
'newfs_msdos -f 1440 /dev/rfd0a'.