Hints on converting your own software to .CAS format
For ease of use I recommend using the CASIN utility which comes with Jeff Vavasour's CoCo II Emulator.
Full detailed instructions on using the CASIN utility are also supplied with the emulator. Paul Burgin supplies a utility called Dragon Convert (DC.EXE) with his PC Dragon Emulator.
Dragon Convert will also convert your software to .CAS format but it is not quite as easy to use as CASIN.