NitrOS-9 The best operating system for the Tandy/Radio Shack Color Computer ever.. and it's free!


ToolShed is a package of utilities to perform cross-development from Windows, Linux or Mac OS X computers to the Tandy Color Computer and Dragon microcomputers.
Tools are included to read/write both OS-9 RBF disk images and CoCo Disk BASIC disk images.

Get the current version, 2.0 (March 2010)
Get the source code from Sourceforge's CVS repository.

Or just go to Toolshed's site in

Disk creation tools

You can use this programs to create real CoCo disks in your PC from .DSK files.

  • DSKINI (For DOS)
  • CoCoDisk (For Windows)