This is the newest version of Syn-Z's great Sega Genesis / Megadrive emulator for PSP. A rough Google translation of the changelog:

– The existing 68k core version rise (the MUSASHI 2.0A in 3.3 modification)
– high speed the 68k core the mounted
– existing 68k core and high speed it changed the 68k core with setting and added core change and reset to the made
– Z80 core replacement
– high speed the 68k core and the Z80 core the NeocCdpsp (the Yoyofr) diverted the thing