Cracking the Code on the Sinclair ZX Spectrum

Master your micro's Mother Tongue! This practical guide to machine code programming lets the dedicated user harness the full power of the Spectrum's hardware and escape the confines of BASIC. The path to professional programming expertise is made clear as you are introduced to the Z80 instruction set and learn to combine the separate elements of machine code into the fast and efficient code found in commercial programs.

The annotated example programs allow you to enter and use fast screen handling routines and sorts in your own programs, debug them with the aid of the trace facility, run them in conjunction with the on-screen clock and lots more, while guiding you through the machine code maze (there's even a program to generate these) and illustrating the practical application to the techniques described.

The ROM routines, interrupt handling and programming principles are all covered, making this an essential reference and guide both for the beginner and the expert who's ready to branch out after succeeding in Cracking the Code.