This book serves as a guide to understanding and utilizing machine code on the Amstrad CPC series of computers. It aims to demystify the low-level programming language, providing readers with the knowledge to directly interact with the computer's hardware. The content is structured to build a foundational understanding of machine code, progressing to practical applications for programmers seeking deeper control over their Amstrad systems.

This technical manual is likely to be regarded as a comprehensive resource for Amstrad CPC enthusiasts and programmers interested in low-level system access. The detailed approach to machine code and processor architecture suggests a text aimed at users with some existing programming knowledge. Its value lies in providing direct insight into the inner workings of the Amstrad 464, 664, and 6128 models, catering to a niche but dedicated audience.