This book is designed to teach machine language on the Commodore 128 to those who have a working knowledge of BASIC.  For example, Chapter 9 is a dictionary of BASIC commands. Following each BASIC command is a machine language routine which accomplishes the same task. In this way, if you know what you want to do in BASIC, you can find outhow to do it in machine language.

• Link to assembler used in the book.

BASIC 128 is an optimizing BASIC compiler for the Commodore BASIC 128 that makes your programs faster and more efficient.  BASIC128 has all of the options of the well-known BASIC 64 compiler and contains additional important new features, such as complete compatibility with BASIC 7.0 and an improved code generator.

Advanced Commodore 128 Graphics and Sound Programming

The Commodore 128 Personal Computer is a versatile, multimode computer. The Commodore 128 is the successor to the commercially successful Commodore 64 computer. The principal features of the Commodore 128 are:
• 128K bytes of RAM, optionally expandable to 256K or 640K
• 80-column horizontal screen display
• Hardware and software compatibility with Commodore 64
• CP/M 3.0 operation
• Enhanced BASIC language
As this Guide shows, the Commodore 128 has many other new or expanded capabilities and features. Those listed above, however, are the most significant when assessing the Commodore 128's capabilities against those of the Commodore 64 and other microcomputers.

The random access memory (RAM), read-only memory (ROM), and interface hardware chips in your Commodore 128 are like postal stations with hundreds of thousands of mailboxes, each of which can hold a single character, or byte of information. This book is a map of all of those memory locations, but it's more than just a list of addresses. It's also a thorough discussion of how the locations are used by the computer, and, more importantly, how you can take advantage of this information to write more powerful programs.

The purpose of this book to teach you to master the disk operating system for your Commodore 128 computer - CP/M Plus. You do not need any prior knowledge of computer operation.  However, if you already know something about CP/M, you can use this book to learn more.

The Commodore 128 Subroutine Library is intended as a companion to the Commodore 128 System Guide provided with your computer, and more advanced texts like Commodore 128 Programmer's Reference Guide.  Many of the concepts you learn in those manuals are applied here in simply constructed subroutines, with only one or two statements per line for easy comprehension. Grouped by function, carefully annotated, and arranged to be readily dropped into your own BASIC software, these subroutines should save you time while sharpening your programming skills.