On Apr 2, 2018, at 6:43 AM, Jd Lyons via OpenBIOS <openbios@openbios.org> wrote:

load hd:12,\ppc\Quadro900Mac.rom load-size=c400 adler32=5ff1641b
load-base 100 dump

Result:

00800000
DEFAULT CATCH!, code=300 at %SRR0: ff847470 %SRR1:0000b030