0 > boot atapi:1,OFWBOOT.XCF NETBSD.RAM -s

0 > boot atapi:1,OFWBOOT.XCF NETBSD.RAM -s bad partition number, using 0

Pedro> open NETBSD.RAM: no such file or directory
Pedro> open atapi/NETBSD.RAM: no such file or directory
Pedro> Boot:

Try lowercase letters, say
0 > boot atapi:1,ofwboot.xcf netbsd.ram -s

Or you may be need to type following name
0 > boot atapi:1,ofwboot.xcf netbsd.macppc 

I think your CD can be mounted on MacOS so that you may 
check the name there.
---
(Makoto Fujiwara)
http://www.ki.nu/software/NetBSD/iBook2/