A vast increase in running speed can be obtained when using programs written in assembly language, which in essence entails direct programming of the computer without using a high level built-in language such as BASIC. However,this can only be undertaken by someone who has a reasonable understanding of the microprocessor and some of the other hardware used in the computer, but it is not as difficult as one might think and this book tells the story. The microprocessor dealt with is the 68000 series which is widely acknowledge as one of the most powerful types currently available leading to its use in some of the latest home and business computers such as the Commodore Amiga, Atari ST range, Apple Macintosh range and the Sinclair QL etc.