Why should graphics emu be low-level when the entire gfx chip of Flipper is hardcoded? With exception of the largely unused TEV effects, it should be easy as hell to write a high-level driver/wrapper for Flipper. Of course, you'd need register documentation of some sort to do it, or enough understanding to figure out how the chip works by disassembling a game (sounds painful, but some code mascochists might like it)...