This is not yet another machine code book for a popular micro which spends half its pages explaining all the 6502/6510 machine code instructions and their various addressing modes, with a crude loader program and a number of machine code routines of dubious usefulness tacked onto the end. The intention of this book is to provide its readers with a solid BASIC program for the entry of machine code and assembly language routines and, along with it, a selection of machine code programs that are worth having.