Your bootxx runs fine,  
Daniel>   OF_open bootpath=/bandit/dac960
Daniel>   read stage 2 blocks: 01234567. done!
Daniel>   starting stage 2...

But it is failing after control is being passed to ofwboot,
Nothing valid PowerPC instruction is there ( may be 0x60000 )

Daniel>   DEFAULT CATCH!, code=FFF007==
Daniel>    ok

This is saying
bootxx does not have the right sector number where /boot
placed. It should be handled at installboot time.

Sorry for that's all I know now, 

Is there really nothing after # installboot -v line ?
-v meant something verbose info displayed.

Daniel>   # cd /usr/mdec     (the dir on the CD)
Daniel>   # /usr/sbin/installboot -v -t ffs /dev/rld0a bootxx /boot
Daniel>   # reboot

---
Makoto Fujiwara,