It was my understanding when I ordered my harmony encore that it would support a 512KB game no problem. I've been experimenting with different sized 3E ROMs and the largest I could get to work was 32KB. I also ran into problems with odd sizes like 30KB.   Attached is a zip with the different sizes I tried. They all work in stella and only differ in image size.   Is this a hardware limitation of the encore or is there just a problem with the firmware? (I'm using the v1.06 firmware)   3E_