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Original Power Mac G4 Developer Note
Contents
Figures and Tables
Preface
About This Note
Topics Described in This Note
Chapter 1 Introduction
Hardware Features
Features of the Enclosure
Compatibility Issues
Software Issues
System Software
Machine Identification
Booting From External Drives
Expansion Issues
Internal Storage Devices
RAM Expansion
No L2 Cache Expansion
Proprietary Modem Slot
Digital A/V Connections
AC Power Issues
Line Voltage Switch
Monitor Power Socket
Legacy I/O Issues
No SCSI Ports
No LocalTalk Serial Ports
No ADB or Serial Ports
Chapter 2 Architecture
Block Diagram and Buses
Processor Module
PowerPC G4 Microprocessor
Level2 Cache
Uni-N Bridge and Memory Controller
Processor Bus
Main Memory Bus
Accelerated Graphics Port Bus
PCI Buses and Bridge
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 IC Support
Power Controller
AGP Graphics Card
Graphics Controller IC
Display Memory
Chapter 3 Input and Output Devices
USB Ports
USB Connectors
USB Features
Power Off During Sleep
USB Storage Devices
USB Compatibility Issues
ADB Compatibility
Serial Port Compatibility
Not for Networking
FireWire Ports
FireWire Connector
Ethernet Port
Disk Drives
Ultra DMA/66 Hard Disk
DVD-ROM Drive
Optional DVD-RAM Drive
ATAPI Zip Drive
Optional Ultra2 SCSI (LVD) Drive
Internal Modem
AirPort Card Wireless LAN Module
Data Security
Hardware Components
Software Components
Keyboard
Keyboard Layout
Keyboard and USB
Mouse
Sound System
Sound Output
Sound Input
Digitizing Sound
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
Chapter 5 Software
ROM in RAM
Aspects of the New Approach
RAM Footprint
Startup Disk Control Panel
Data Structures and Files
Memory Mapping
Boot Process
Boot ROM Contents
Hardware Initialization Code
Open Firmware
Interrupts
Mac OS ROM Image File
System Software Modifications
Computer Identification
Power Manager
Suspend and Resume
ATA Manager 4.0
USB Drivers
Other New Drivers
Legacy Drivers
Floppy Disk Legacy
ADB Legacy
SCSI Legacy
AltiVec Acceleration and Support
Appendix A Conventions and Abbreviations
Typographical Conventions
Abbreviations
Supplemental Reference Documents
3D Graphics
RAM Expansion Modules
PowerPC G4 Microprocessor
AltiVec
Mac OS 9
Open Firmware
PCI Cards
ATA Devices
USB Interface
FireWire Interface
Copyright
© 2000 Apple Computer, Inc. (Last Updated 13 Jan 00)