If someone wants to test pcsx_rearmed, here is a temporary link:

https://www.dropbox.com/scl/fi/zxwap...nxb9k2bcn&dl=0

Pcsx_rearmed with sound should work out of the box with HLE bios. Frameskip must be adjusted depending of the game. Other settings are already optimized for N900.
For more game compatibility, please use a psx bios like scph1001.bin or scph7502.bin. (of course i can't provide them).
Bios path is /usr/games/pcsx/bios
(Menu keys are hardcoded: arrow keys, 'backspace' for enter, 'e' for exit/back)

Prefer performance mode in cpufreq and/or overclock for more fun (and don't forget to disable hildon compo while playing: Ctl+Shift+N)

Note: should work on Droid4 too.

I think Picodrive (.deb) will be ready in the next couple of days.