A comprehensive guide to the hardware and firmware organization and architecture of the Apple II computer, What's Where in the Apple discusses concepts and programming techniques useful for mastering the inner workings and hidden mechanisms of the Apple II. This new Enhanced Edition is the most complete and accurate edition ever created, featuring improved readability, new coverage of the Apple IIe and Apple IIc, and a forward and historical perspective by publishing legend Robert Tripp. The numerical Atlas and alphabetical Gazetteer guide you to over 2,700 memory locations of PEEKs, POKEs, and CALLs in DOS and ProDOS. Applesoft and Integer BASIC users will learn how to speed up and streamline programs. Assembly language users will discover routines that simplify coding and interfacing. All users will find this book helpful to understand the Apple II and essential for mastering it!