I've got part of the emulated graphics processor running in the second CPU now, but the GP2X isn't entirely happy about it. I must be clobbering something I shouldn't be because the dual CPU build only runs once after powerup, then refuses to run again unless I turn the GP2X off and back on.
I'm rather busy with day-job work at the moment, but I steal the odd hour or two here and there when I can to work on this.