Bought Soleil not a long ago, entered the code via Game Genie, played a lot and...after all that discovered what it doesn't save. Read this thing about Sega's decision about RPGs with Game Genie on Wikipedia.
There's any possibilities to launch european region-locked RPGs with ability to save?
Found info what Mega Key 1 doesn't launch PAL games on US machine, Mega Key 2 too (though it will on Japanese one?).