MiSTer Tandy Color Computer 2 (CoCo2) and Dragon 32

Originally started by:

https://github.com/pcornier/coco2

Finished by dshadoff and alanswx and pcornier.

Tandy Color 2

This core implements a Tandy Color Computer 2 (CoCo2) including:

• 64k Memory
• 2 Analog Joysticks (with a swap feature)
• Cassette Loading
• Sound
• Cartridge Support

Dragon 32 / 64

• only the dragon 32 seems to work
• 2 Analog Joysticks (with a swap feature)
• Cassette Loading
• Sound
• Cartridge Support

Coco 2 running on a AX309 board