It's great piece of software, though I still need to learn how to deal with problems with running CPS2/NeoGeo games.
As for now I'm pretty disappointed with NES roms smoothnes, as far as I observed the gameplay isn't as smooth as let's say in FCEUX port for GC. But this Nestopia port has much better sound in my opinion.
Also, I played a few roms, and no config files were created in /retroarch directory, anyone knows what's the reason?
Configuration files didn't appear in the main dir because i didn't change any options probably, after playing with them("Z" before loading any rom as far as I remember) there was a config file.
Some NES games work ok, some are kind of lagging, like Adventure Island 3 screen movement isn't smooth, and in Megaman 2 it's ok.
I hope to see NXEngine included in the package. Also, maybe it's a good way to get better PSX emulator on gamecube?