I've not looked so sorry if it's been posted. Over at the ScummVM forums the guy who does the DS port, agentq, has got a build up (scummvm-j) which makes use of slot-2 RAM. You can play Full Throttle and The Dig to a point. Hopefully more to come. You can download the build. Go to the ScummVM forum and check the DS section for the post at the top.