I believe this is the canonical reference. At least I've seen it on multiple people's desks: https://www.thriftbooks.com/w/the-powerpc-architecture-a-specific

I believe this is the canonical reference. At least I've seen it on multiple people's desks: https://www.thriftbooks.com/w/the-powerpc-architecture-a-specification-for-a-new-family-of-risc-processors_cathy-may_international-business-machines/519505/item/38 https://www.thriftbooks.com/w/the-powerpc-architecture-a-spe...