This book is the sequel to BP109, The Art of Programming the 1K ZX81, and it sets out to help you use your 16K RAM pack and ZX printer to the full. It concentrates on good programming style and introduces some interesting programs that are both fun and useful.

Chapter One introduces the 16K RAM pack and the printer. Chapter Two explains how the extra storage spaces is used and presents a memory test praogram to check that your new 16K is opeational. Chapter Three covers some utilities that you will find useful in writing longer programs. Chapter Four is an interlude from serious applications, presenting four games programs that make the most of the extended graphics capabilities now available to you. Chapters Five to Eight deal with writing and debugging large programs, storing them on cassettes and printing out both programs themselves and their result. These chapters also introduce programs for editing data bases and statistical analysis for financial management and covers text and graphics printing. Chapter Nine tekes a look at randomness. Chapter Ten introduces machine code and explains why you might like to use it.

With this book to guide you, it is hoped that you will be able to discover just how versatile and powerful your ZX81 is and that you will realise just how rewarding programming with it can be.