This book investigates the intricacies of programming the Enhanced Graphics Adapter (EGA) and Video Graphics Array (VGA) graphics cards for advanced users. Authored by George J. Sutty, a presumed expert in the field given the title, this guide likely delves into the low-level hardware details and programming techniques required to harness the full capabilities of these graphics processors. It aims to provide programmers with the knowledge to create sophisticated graphical applications by explaining the architecture, registers, and command sets of the EGA and VGA.

Given the technical nature and specific focus on EGA/VGA hardware, this book is likely aimed at experienced programmers and computer enthusiasts from the late 1980s and early 1990s. The subject matter suggests a dense, highly technical text that would have been valuable for those developing software requiring advanced graphics capabilities on IBM PC compatible systems of that era. Its authority would stem from its detailed technical exposition and practical programming insights into a then-cutting-edge graphics technology.