PicoDrive emulator (bottom screen) is a mod of bubble2k16's program (v0.94) created to be played only at bottom screen on your old 3DS and old 2DS. Currently supports Sega Master System and Mega Drive games only.
picodrive3DS_bottom.3dsx (to be launched from homebrew channel)
picodrive3DS_bottom.cia (to be installed in home menu)