Dear fellow readers:The concept of writing assembly programs frightens most programmers who have adjusted in writing software in a third generation language (e.g., Pascal, C). In fact I have read two other books in my quest to understand assembly. But this book is definitely the best I have came across. The author has broken down the assembly instructions into many chapters that can be useful in locating the subject of interest, and skipping those that do not pertain to the reader's interest. His explanation of the interrupts and their associated services are uncanny. He has organised them into modular format so that the programmer can write programs as though he/she is connecting a large jigsaw puzzle. To my experience this made reading and writing assembly much easier task.