Please help I've downloaded reicast got bios in the right place can get to Dreamcast dash but can't get games to work I can only find rar or zip files but apparently need cdi or gdi files after loads of searching no joy in understanding what they are or where to get them.I have got loads of original DC games in my loft but it sounds very complicated to dump the files I can use loads of different emus but this is proving too difficult and I'm desperate to play DC games on my nexus 7 cheers