There are emus. There's even some that play commercial games in unreleased builds. BUT (and that's a big but), there's not much of a chance of them running at full speed for a while, or emulating that many games for that matter.
the only reason there are very basic dc emus out, is bcuz its been arouind longer to figure out how to emulate it! if a ps1 still cant b 100 percent emulated itll b a while b 4 ur lookin at a half decent dc or ps2 emu, dont live in a fantasy world