Update:

> http://lists.gnu.org/archive/html/qemu-ppc/2014-05/msg00258.html
> http://lists.gnu.org/archive/html/qemu-ppc/2014-05/msg00264.html

http://www.openfirmware.info/pipermail/openbios/2014-June/008391.html

...and from a week ago:

"I think I've reached a milestone now. For the first time I was able to boot MorphOS and connect to it via VNC to also see it doing something."
http://lists.gnu.org/archive/html/qemu-ppc/2014-06/msg00000.html