http://arstechnica.com/gaming/2016/12/m ... atari-2600
basically what hes done is created an atari 2600 machine emulator using minecraft blocks to visually represent pixels/ram/rom and then minecraft command blocks to write the logic that executes the cpu instructions. when you watch the video, its a really nice way of showing how the system works and watching the bits in the ram change.
anyways, I was impressed
