MAME is coming but i was hoping to port something newer than has been available in the past. I might do a MAME4All port while waiting for the official pandora support to be added for SDLMAME (by the maintainer). However, it would definitely be easier to wait because once the pandora target is complete it will be easy to get latest MAME on Maemo. It remains to be seen if it will have good enough performance, but the SDLMAME dev obviously thinks so (pandora and N900 being almost identical in hardware capabilities). It's not clear when that will happen, so i will spend some time on MAME4All to see how involved it will be to port.