It's pretty useless, DM admitted it himself. He moaned that R4 sucks because they need to sort out their DLDI or summin. When you use that R4 exec_stub it does not boot homebrew properly. Well atleast for me and many other R4 users. Only thing I've seen it work properly on is booting demos. Off topic: Dl the Table Hockey demo from Dm's HBDB - it's pretty fun! Someone should make this a homebrew with online play.