I’ve done some work recently on the Namco System 23/Super System 23 driver. Now the POST screens show up (in bad colors) and it currently dies because it can’t handshake with the H8/3002 sound CPU (which the POST calls “SUBCPU”). There appears to be a bug in MAME’s H8 core that’s causing it – the mainline main loop doesn’t execute properly once interrupts are enabled. Stay tuned.
Also, congrats to Haze on shipping his first commercial game today on the PS3!