You should be able to do:

0> boot enet:,ofwboot.xcf -a

That will stop you at the ofwboot prompt and you can enter:

boot: netbsd -d

Which should theoretically drop you into the debugger (if it is 
compiled in). I say theoretically because I've never actually tried it.


Chris

Quoting Dominique Goncalves <dominique.goncalves@gmail.com>:

> Hi,
>
> I'm trying to install NetBSD 3.0 on a Power Macintosh G3 beige.
>
> The system boot from the network with:
> O> boot enet:,ofwboot.xcf
>
> but the kernel hangs with:
> scsibus0: waiting 2 seconds for devices to settle...
>
> What can cause this problem?
>
> I have found a possible PR for this problem macppc/25966, in this PR
> there is a suggested workarround:
> boot -d
> write wdcdebug_mask 0x10
> continue
>
> how can I boot from openfirmware with this options?
>
> Thanks for your help.
>
> Regards.
>
> --
> There's this old saying: "Give a man a fish, feed him for a day. Teach
> a man to fish, feed him for life."
>
> !DSPAM:43b3d732297441181590770!
>
>
>
>