Ah, it's using the definitive PC FDC. It was developed well before
PCs standardized. PCs however don't offer much choice and if they did
keep all the FDC features you could put a 8" on a PC and read SSSD!
I actually *can* do that on a K6-2 box I've got sitting at work (and
have done it several times).
I have a few that can too, so much for standard. ;)