HELP xenix floppy disk driver

[simon chan]

I need help the followings for a PC/AT xenix system:
	(a) a xenix floppy disk driver for COMPATICARD.
		friend of mine brought this card and it only came with DOS 
		driver. And he needed to use this for more than 2 floppy disks.
	(b) direction or pointer for writing a xenix device driver.
		note: I had written many BSD type driver.
	(c) how to get a basic xenix floppy driver so I can modify it.
	(d) need information for this card "COMPATICARD" !

	(e) Is there a floppy disk controller can be used for more than 
		2 floppies with xenix driver.
thanks in advance!
				Simon Chan
				princeton!hhb!simon