floppy driver wanted

[utzoo!decvax!harpo!ihnss!ihuxl!larry]

	Being new to the internals of a ``driver'' can anybody
point me to a memo/listing for a UNIX floppy disk driver?  What I'm
interested in mostly is just an idea of how the disk is layed-out,
not an indepth study of a particular interface.  I didn't see any
thing that looked like a floppy driver under "/usr/src"... any
ideas anybody?

	thanks,
		Larry Marek
		Bell Labs (Naperville, IL)
		(312) 979-5134
		(...!ihnss!ihuxl!larry)