For the record, I believe that treismac, in inquiring about Dreamcast emulators, was referring to emulators that run on a Dreamcast rather than Dreamcast emulation on PC as it's been interpreted by a couple posters. This isn't really helpful at all, but the only emulator I can remember trying out on a Dreamcast was an Intellivision one and it had the same awkwardness in dealing with keypad controls mapped to a gamepad as any Intellivision emulator on console.