Yoshihiro while you take a little break from the world of PSP development DSonPSP, the only emulator of the Nintendo DS and PSP now in circulation that seems promising, the coder jonlimle it issues a unofficial version with some changes. This release is unfortunately not presented nothing but a modification to the program in future revisions are still counting on the introduction of attractive features including the ability to save / resume execution of Roma at any time, the possibility of take screenshots, support to Roma tablets in zip archives, and more.
Next, if you're interested, you can find a video that shows us the game UNO52 in action and the link to download.