Here's a deep dive book on the architecture of the AS/400 up to the PowerPC port, written by Frank Soltis, one of the main people behind the system. https://ar

Here's a deep dive book on the architecture of the AS/400 up to the PowerPC port, written by Frank Soltis, one of the main people behind the system. https://archive.org/details/insideas4000000solt https://archive.org/details/insideas4000000solt