If you've got a Pocket Mini Computer Kit, you've probably noticed that the "Experimenter's Port" on the right side is labeled P12-P14. The reasoning for this is that the Propeller microprocessor (The CPU used for this project) has a lot of great existing games and programs already written that support TV output.
This Instructable will teach you how to create the "World's Simplest Video Card" for your Pocket Mini Computer.
Don't know what a Pocket Mini Computer is? The Pocket Mini Computer is a simple open source computer that runs an 80's style BASIC that you can build from scratch or assemble from a kit
. For more information on the PMC project, see this Instructable