An excellent, incisive, practical handbook which supplements the official User Guide by providing additional information and by explaining the facts that programmers need most. Has plenty of examples to serve as ready-made components for reader's use in their own programs.
There is guidance on every aspect of the machine: graphics, sound, making the most of the special features, getting the most from your BBC Micro and avoiding the pitfalls.
A 102 page paper back in good condition. This was a former school book and has a school stamp on the inside cover and on the edge of a couple of pages.