USB floppy

Hi,

Is there any driver for the external USB floppy disk drive?

I know that USB SDK 1.0 (beta) supports some basic peripherials like mouse,
keyboard, hub and printer…
…but maybe somebody has developed driver also for floppy.

Where can I find some informations about writing drivers under QNX 4. Is
there something similar to the DDK’s QNX 6 documentation?

Regards,
Jacek