Michael, thanks for your reply.

>  How exactly does it fail? 'does not boot' can mean quite a few 
>  different things.

Oh, sorry.  It hangs just after printing "console keyboard
type:" message.  Please take a look at the thread started
from my message posted to port-macppc in July.

http://mail-index.netbsd.org/port-macppc/2007/08/11/0000.html

>  And, did you try anything newer than 4.99.1 or did you narrow the 
>  failure down to this version?

Yes.  Actually I tried the version as of July, then did
binary search to find the point of breakage.  Not tested
latset one though, so I try it soon.

>  I remember having to fix a few things to make NetBSD boot again on my 
>  iBook G4 after G5 support was committed, not sure when exactly I did 
>  that.

My friends' PowerBook G4 booted my test kernel.

Best regards,

--
SUNAGAWA Keiki <kei_sun@ba2.so-net.ne.jp>