If you need the full version of Pyeatt's textbook for professional or academic use:
The primary textbook for this subject is by Larry D. Pyeatt and William Ughetta. While it is a commercial publication, there are several open-source and educational alternatives available for free. 📚 Recommended Free Resources ARM 64-Bit Assembly Language free ebook download
: All instructions are 32 bits wide, simplifying the fetch-decode cycle. If you need the full version of Pyeatt's