> The Title screen and most of the HUD display will be pure garbage, the dongle is used > to decode the 2d tilemap data or holds the 2D tilemap - never worked out which. > > I believe dumping the dongle data via model 3 serial is an option, like how Naomi > carts are dumped..
The dongle actually sends back more data than it receives, so the 2D data might be compressed (and also crypted?). But yeah, with a simple program and a dongle it should be fairly easy to retrieve the data.