The SWIM 3 Floppy Driver for Mac OS X and Darwin was announced on April 1, 2002.
This driver is for Apple-branded floppy hardware as used in the PowerBook G3 Series (Wallstreet and Mainstreet/PDQ), the Power Mac G3 (beige), and others. This driver is not for third-party floppy drives of any kind. Third party drives are either USB devices or ATA devices, while Apple floppy drives are raw Sony, Mitsubishi, or Panasonic drive mechanisms attached directly to the motherboard controller. This driver will not help you in any way with third-party devices, so please don't even try.