Some news...
Well the PSX R3000A -> ARM dynarec I initially wrote wasn't stable, so yesterday I started on it from scratch. I had taken a break from the psx4all project up until then. The good news is the dynarec is progressing much better now that I have some expierence with it. It recompiles most of the BIOS but one stupid instruction fetches the wrong code, and once I figure out how to fix it, I have a feeling it will be very easy from that point on.
I really want the dynarec to work for the next release of psx4all on the various ARM platforms (GP2X, PocketPC (inc. Gizmondo), Palm, and of course Zaurus), before making a release. Performance has been greatly improved since the last release on the Z, so with the dynarec we can expect fullspeed 2D games, and very playable or fullspeed intense 3D games. The menu system has been improved but is still ugly.
I also am considering making a cacko release, as it has been requested many times and has BVDD video acceleration support, so I imagine even with hard-float it won't be much slower.
I'm sorry the coming release has taken so long...It won't be much longer, within a week or less.