After ordering the wrong buffer chip for my Logic Cube I started poking around and managed to get a commercial rom to run. It seems my issues are a result of timing problems with my new memory mapping module. The attempt shown below locked up at the title screen but I have since managed to start the demo video that follows. Unfortunately since I haven’t implemented sprites its less of a video and more of a static background. Assuming the chip that came in today is the correct version I hope to be running on 32 channels and make more progress this weekend.