> Great. I can also send you a 2.25R PROM which supports HyperSPARC CPUs,
> although I think the Sun 2.25 supported most of the slower clockspeed
> HyperSPARCs.
>
>   
yes all HyperSparcs also sold by Sun. So all HSxx-Models see 
http://mbus.sunhelp.org/modules/index.htm
footnote 4,5,6,7

Best Regards
Stephan