Explore Books on
machine code

Usborne introduction to machine code for beginners

By Lisa Watts,Mike Wharton

Mastering the Commodore 64

By Mark Greenshields

PET graphics

By Nick Hampshire

Advanced machine code programming for the Commodore 64

By A. P. Stephenson

Advanced Electron machine code techniques

By A. P. Stephenson,D. J. Stephenson

Basic ROM user guide

By Mark Plumbley