In this video, we test the ALU we built (and fixed) in the last two videos (https://youtu.be/S-3fXU3FZQc and https://youtu.be/U7Q8-2YZTUU) and connect it to the bus. See https://eater.net/bbcpu8-alu for more. Support me on Patreon: https://www.patreon.com/beneater