Heres a beta release of the Picodrive Emulator for the 3DS, heres the release notes:

PicoDrive 3DS Git (2018/01/27) is released. This is a port of notaz's PicoDrive emulator to the old 3DS and old 2DS. Currently supports Sega Master System and Mega Drive games only. If you want Sega CD and 32X support, Retroarch is your best bet for now.

PicoDrive features:
- status line in main menu working
- bug fix: remove accidental wip svp code
- analog control working
- bug fix: svp dynarec freeze
- bug fix: load state background
- bug fix: accurate renderer

PicoDrive 3DS Changelog:
-Fixed draw_arm.s bug (fixed Blackthorne)