YAUPSPE is a PSP emulator, based on Potemkin, coded in ANSI C and that uses SDL.

It's still in development, so don't expect to see a game running — only some PSP SDK samples barely work.

Now YAUPSPE has a forum! It's here: http://www.emunewz.net/forum/forumdisplay.php?fid=98

It also has an IRC channel (a chat): #yaupspe on irc.freenode.net ; you can also use http://java.freenode.net/index.php?channel=yaupspe