Apart from my PSP I also have a GP2X handheld.
I do have UAE on the GP2X as well.
Now since a new release of UAE4ALL where they use a new Cyclone 68000 core, the GP2X UAE port runs most games FULL SPEED with SOUND!! (Like sensible soccer, SWIV etc). Really the difference was breath taking!!
My question is now; is it possible to have this cyclone coe (30% improvement) also in the PSP port of UAE?
If you want to know what to change then do this:
1) take old version of UAE4ALL for GP2X just before cyclone core merge.
2) diff it with first version that hase cyclone core merged in
3) apply these differences to the PSP port
Or Maybe contact the author?
Ermmm, we have already discussed this openly months ago and in 0.63 release. Cyclone will not run on PSP, Gnostic has already looked into this,

. We have the FAME C core, but its compatability sucks at present, Which means we are not using this at present.
We are still on old E-UAE source (WIP3), waiting for the new WIP4 (with bug fixes) to be compiled. Like everyone else, if we see something, we will check it out. We also want a full speed portable Amiga.
EDIT:- Simple search for "cyclone" would have answered your question.
http://pspuae.condor.serverpro3.com/index.php/topic,433.0.htmland quote from gnostic in release thread.
cyclone is ARM only 68k core so we can't use it for PSP..
although gp2x has 220 mhz (overclockable), it has bigger I/D-caches..