Is adding a new CPU to qemu a huge task?

Question

Since qemu can emulate hardware, CPU's in particular as I understand it, would it be a huge undertaking to add a new architecture?

What I had in mind were the XBox 360 CPU called Xenon.

I think there are unofficial specs.

Adding the Xenon, would that be something one medium good programmer could do?

Answer 1

Google qemu xbox. Many have succeeded.