PicoDrive is Megadrive / Genesis / Sega CD / Mega CD / 32X / SMS emulator.

Changes:

* Added Caanoo support. Now the GP2X binary supports GP2X F100/F200, Wiz and Caanoo. Lots of internal refactoring to support this.
* Enabled 32X and SMS code. It’s still unfinished but better release something now than wait even more (it has been in development for more then a year now due to various other projects or simply lack of time).
* GP2X: Added basic line-doubling vertical scaling option.
* Changed the way keys are bound, no need to unbind old one any more.
* Handle MP3s with ID3 tags better (some MP3s with ID3 did not lay).
* Improved shadow/hilight color levels.
* Fixed broken cheat support.
* Internal refactoring for 32x/SMS support.
* Move mapper database to external file.
* Added preliminary SMS emulation.
* Added emulation of 32x peripherals including VDP. More work is needed here.
* ARM: Added new SH2 recompiler for 32x. Some unification with SVP one.

http://dl.openhandhelds.org/cgi-bin/caanoo.cgi?0,0,0,0,71,510