4/16/2008: Please see the Read Me First page before creating new pages (and also if you plan to edit any; you can help clean up the site while you improve/expand the content). --OS-9 Al

From CoCoWiki

Written in the summer of 1985 by Dave Lewis, this replacement for the Radio Shack CCDisk OS-9 device driver module provides support for:

• Single and double sided 5 1/4" floppy disk drives
• 40 and 80 track disks and drives
• Faster head step rates than the default 30 mSec