Mega/Sega CD problem

Hey everyone, I'm new to using emulators and have recently downloaded MD.emu for my android. great app and works fine with Mega drive/Genesis games, but when I try working a Sega CD game the app just closes itself, now I have read that I have to download bios but im not to sure what im having to do and where to store them? Any help for a newbe? thanks guys

Welp, usually there would be a BIOS folder in the main folder of the emulator. You need to go out of your way to get the BIOS because we aren't allowed to give you a link, but if you look it up on google, you should be able to download it. :)

Try To google it.We are not allowed to give bios links.That is considered illegal.