The DSTWO apparently has 360 mHz going on 396 mHz alongside 16 MB of RAM. Especially given that a port to the PSP is possible, I wonder about the challenges of porting RetroArch to the DSTWO.
This is little more than a thought experiment, since I do not think that I have the motivation to work on this project.
On why I would like to do this, I use my DSTWO a lot. Porting RetroArch to the DSTWO would have me not need to bring two systems: one with which to play DS games and another with which to play everything prior to the DS.
(I made a new thread because my older thread was more general.)