> The only problems I do have are a little more subtely related to how
> you interface to the kernel (eg what do you edit to change the
> kernel's idea of major/minor device numbers, just what is spl()
> anyway, etc etc.)

Well, rather than doing that, why not just hack it in as an optional
behaviour in wd.c (the standard ATA hard disc device driver).  OK,
so the disklabel stuff will be all wrong, but hey, that way you get
away with having all the kernel interface stuff already there in place,
and you don't have to duplicate all the ATA stuff....

-- 
Me: Ronald Khoo  Food: Roti Chanai  Drink: Tea, weak, milky without sugar
In Malaysia: ronald@cpm.com.my  +60 3   241 5232  Computer Protocol Malaysia
In England:  ronald@demon.net   +44 181 371 1000  Demon Internet Services