Dr. Ian Logan is widely acknowledged as the leading authority on Sinclair computers. In this book, he gives you a complete overview of the way the Spectrum operates, both for Basic and machine language programming, including numerous demonstration programs.
In Dr. Logan's own words "Understanding Your Spectrum" has three main aims:
to explain, in simple terms, how the Spectrum works;
to teach Z80 machine code from first principles;
to give details of 'monitor entry points' so that efficient programs can be written.
A special selection of the ROM operating system will give you insight into the Spectrum and provide you with information on how to use many of the routines present in the ROM in your own programming.
This book is a must if you are serious about programming the Spectrum.
