Hmm...that conficts with:

	http://www.netbsd.org/Documentation/bootcd.html#sparcimage

	"NetBSD/sparc64 (top)

	     Currently there is no support for booting NetBSD/sparc64 from CD. It
	is on the sparc64 TODO list however and the hardware certainly will
	support this. "


	Unless you're seriously hard-core, It's probably not worth burnning to a
	CD anyway, at least not until there's a bit more hardware support and
	maybe sysinst ;-)

You should be able to create an INSTALL kernel, use mdsetimage to 
install a miniroot into it and slap that onto a CD to boot from. 
You may need to twiddle with the MINIROOTSIZE option to make the
image fit.  The current 6MB should work with most miniroots on the
FTP server.

Eduardo