Introduction to PowerBook G4 - 12 inch

This developer note gives a technical description of the new PowerBook G4 –12 inch computer. The note provides information about the computer’s internal design, input-output features, and expansion capabilities.

This developer note is intended to help hardware and software developers design products that are compatible with the Macintosh products described here. For additional technical information on Macintosh computers, refer to Supplemental Reference Documents.

Organization of This Document

The information in this note is arranged in four chapters and two appendixes.

• Chapter 1, Introduction, introduces the PowerBook G4 –12 inch computer and describes its features.

• Chapter 2, Architecture, describes the internal logic of the PowerBook G4 –12 inch computer, including the main ICs that appear in the block diagram.

• Chapter 3, Devices and Ports, describes the standard I/O ports and the built-in I/O devices.

• Chapter 4, RAM Expansion, describes the RAM expansion module.

• Appendix A, Supplemental Reference Documents, tells where to find more information about specific technologies used in the new PowerBook G4 –12 inch computer.

• Appendix B, Conventions and Abbreviations, lists the standard units and abbreviations used in this developer note.