patched drastic emulator for OP
I'm too lazy to check which links work so if one of these doesn't, use the next one.

https://play.google.com/store/apps/details?id=com.dsemu.drastic
http://rg.to/file/e25e84eb1c8a8d8488b9790e7babba51/DraStic_DS_Emulator_vr2.2.1.1a_Patched.rar.html
https://www.dropbox.com/s/0zk2yh0wolfr9wf/DraStic%20DS%20Emulator%20v.%20r2.2.1.1a%20Patched.rar?dl=0
https://www.oboom.com/FCA7NRQ9