Graphics Operations of the ZX Spectrum
Ian O. Angell, Brian J. Jones · 1983
Throughout the course of this book we will be assuming that the reader is reasonably familiar with the BASIC programming language on the ZX Spectrum. In this chapter, however, we shall be looking at some of the BASIC commands — those concerned wholly or partly with graphics. With a series of example programs and simple exercises we shall examine and explore the Spectrum’s capabilities. In the chapters that follow we shall use this knowledge to develop a sound understanding, both practical and mathematical, of computer graphics.