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Power Mac G4 Developer Note
Contents
Figures and Tables
Preface
About This Note
Chapter 1
Introduction
New Features
Hardware Features
Features of the Enclosure
System Software
Mac OS 9.1
ROM In RAM
Computer Identification
Dual Processor Support
Power Saving Modes
Processor States
System Modes
Velocity Engine Acceleration
Chapter 2
Architecture
Block Diagram and Buses
Processor Module
PowerPC G4 Microprocessor
Cache Memory
External Level 2 Cache
External Level 3 Cache
Dual Processors
Uni-N Bridge and Memory Controller
Processor Bus
Main Memory Bus
Accelerated Graphics Port Bus
PCI Bus
Boot ROM
Ethernet Controller
FireWire Controller
KeyLargo I/O Controller
DMA Support
Interrupt Support
USB Interface
Ultra DMA/66 Interface
Enhanced IDE Interface
Modem Slot Support
Wireless LAN Module
Sound Circuitry
Power Controller
Graphics Card
Display Memory
Chapter 3
Input and Output Devices
USB Ports
USB Connectors
Waking Up From Sleep
Booting from USB Storage Devices
FireWire Ports
FireWire Connector
FireWire Device Programming
Booting from a FireWire Device
Target Disk Mode
Ethernet Port
Disk Drives
Removable-Media Drives
DVD-R/CD-RW Drive
CD-RW Drive
DVD-ROM Drive
Optional Zip Drive
Fixed-Media Drives
Ultra DMA/66 Hard Disk
Optional Ultra SCSI 160 Drive
Internal Modem
AirPort Card Wireless LAN Module
Data Security
Hardware Components
Software Components
Keyboard
Keyboard Features
Keyboard Layout
Programming the Function Keys
Multi-Media Control Keys
Keyboard and USB
Programmer's Switches
Mouse
Sound System
Headphone Jack
Apple Speaker Mini-jack
Video Monitor Ports
Digital Monitor Connector
Digital Display Resolutions
Analog Monitor Connector
Monitor Adapter
Analog Display Resolutions
Chapter 4
Expansion
RAM Expansion
DIMM Specifications
Mechanical Specifications
Electrical Specifications
DIMM Configurations
RAM Addressing
PCI Expansion Slots
Appendix A
Supplemental Reference Documents
PowerPC G4 Microprocessor
Velocity Engine (AltiVec)
Multiprocessing Services
3D Graphics
Mac OS 9.1
ROM-in-RAM Architecture
Open Firmware
RAM Expansion Modules
ATA Devices
Ultra SCSI Interface
USB Interface
FireWire Interface
Digital Visual Interface
Appendix B
Conventions and Abbreviations
Typographical Conventions
Abbreviations
Copyright © 2001 Apple Computer, Inc. (Last Updated January 2, 2001)