Notaz has updated PicoDrive which is a Megadrive/Genesis and SegaCD emulator for GP2x.

Changes:

Some new optimizations in memory handlers, and for shadow/hilight mode.
Added some hacks to make more games work without enabling “accurate timing”.
Adjusted timing for “accurate timing” mode and added preliminary VDP FIFO emulation. Fixes Double Dragon 2, tearing in Chaos Engine and some other games.
Fixed a few games not having sound at startup.
Updated serial EEPROM code to support more games. Thanks to EkeEke for providing info about additional EEPROM types and game mappers.
The above change fixed hang of NBA Jam.
Minor adjustments to control configurato

http://archive.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,5,2040