Nice. Whats next? Well for comparison, there are some tests that James Sharman ran recently, that compared against a bunch of devices, test compiled by a guy who has developed a bunch of boards (incl. the Cerebus). And whats after that? Is it time to look at getting the VGA out working, or extend Ehbasic a bit first? Load and save on one of the RP2040 SIO sd-card interface. I believe that the way you have things set up, should be easy for some of use to trans plant the PicoVGA with a PicoDVI (over HDMI).