OSDev.org

Hi, I own a PPC Mac (New World) and I just want to make an "OS" that boots and prints a hello world message to the screen.
Or a bootloader that prints the message.

I'm willing to learn PPC ASM if it's needed.
The problem is that I cannot find any similar projects.

While hundreds of tutorials exist for the x86 architecture, none exist for the PPC.

developer.apple.com has no information, BootX documentation is limited and OpenFirmware makes it so hard.

I'm also aware of yaboot, which I'm thinking of using if I don't succeed in making my own bootloader.

I know of the penguinppc and netbsd sites.

Can anyone point me to some documents, tutorials, similar projects, code that can show me or help me understand how to do this?

I remembered seeing something on www.osdever.net but when I followed the link it was bad. However, when I ran a search on IBM's site I found this: http://www-3.ibm.com/chips/techlib/tech ... 96007558C6

I haven't read it but I suspect there is at least low level information on programming. I would also suspect that there may be more information on IBMs site on the boot process and specifics about the processors.