Hi,
I'm facing some using when using NetBSD 8.1.
First :
NetBSD-8.1-macppc.iso is not usable under qemu-system-ppc. It boots but it keeps showing strange symbols.
Second ( which might be related to the first ) :
I tried to boot NetBSD-8.1-macppc.iso on my Ibook G4. It does not shows any weird symbols however when in main menu screen it shows "NetBSD 8.1 RC1"