Actually I just asked Renee (the creator of the PowerBase FM) and he said, while he doesn't have a x'eye to test, one who purchased one said it does work fine. I am not sure why SAG page says it doesn't, there is a review saying it's fine. As is with the MegaEverdrive X7 I just get a blank screen, suggesting the everdrive isn't switching correctly in to SMS mode. In theory, changing the mapper in the options menu should work in the X7. I need to play a little bit with it a little more to see what works and what does not.