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Apple
Desktop Computer manual
Models:
Desktop Computer
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Compatibility Issues
How to
What is
PowerPC G3 Microprocessor
USB Connectors
Features
NewWorld Boot Process
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Image 54
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Contents
Apple iMac Computer
Page
Contents
Devices and Ports
RAM Expansion
Software
Rtas
Appendix Abbreviations Index
Rtas NV-RAM
Figures and Tables
Page
Contents of This Note
About This Developer Note
Mac OS
PowerPC G3 Microprocessor
Supplemental Reference Documents
ATA Devices
USB Devices
Open Firmware
E F a C E
Introduction
Features
Case and External Features
Shows a front view of the computer
Front view
2Side view showing I/O bay
Compatibility Issues
System Software
Main RAM Expansion Modules
Video RAM Expansion Modules
USB Ports and Devices
Page
Architecture
Architecture
Processor module
G3 Microprocessor
Backside Cache
Main Logic Board
Memory Controller and PCI Bridge
Controller IC
USB Controller
Video Display Subsystem
Built-in Modem
Infrared Link Module
Devices and Ports
USB Connectors
USB Ports
Transfer Types Supported
GND
USB Compatibility Issues
ADB Compatibility
USB Storage Devices
Serial Port Compatibility
Macintosh-To-Macintosh Connections
USB Controller
Keyboard
Keyboard Layout
Mouse
Keyboard and USB
Hard Disk Drive
Video Display
Infrared Communication Link
Sound System
Built-in Microphone
Sound Inputs
Sound Outputs
External Sound Input
Sound Specifications
External Sound Output
Headphone Jacks
Total harmonic distortion
Ethernet Port
Internal Modem
Page
RAM Expansion
Removing the Logic Board Assembly
Expansion Slots
Placing the Computer Face Down
Removing the bottom cover
Unfastening the Cables
RAM Expansion
3Logic board assembly handle and retaining screws
Removing the Retaining Screws
Removing the Logic Board Assembly
Removing the EMI Shield
Locations of the Expansion Slots
Main RAM Expansion
6Locations of the RAM expansion slots
Mechanical Design of RAM SO-DIMMs
Electrical Design of RAM SO-DIMMs
Sdram Devices
Configuration of RAM SO-DIMMs
RAM SO-DIMM Electrical Limits
Address Multiplexing
Video RAM Expansion
Page
Software
Why Make This Change?
What Has Changed
Features of the New Approach
User Experience
Performance
RAM Footprint
Data Structures and Files
Boot ROM Contents
Mac OS ndrv Drivers
Rtas
Toolbox Image File Contents
NewWorld Boot Process
Trampoline Code
ToolBox ROM Image
What Is Different
Interrupt Handling
Outmoded Resources
RAM Footprint
NanoKernel
Startup Disk Control Panel
Open Firmware and the Device Tree
Interrupt Layout
Machine Identification
Software
Abbreviations
Chrp
NMI
Page
Index
Nvram
X, Y, Z
Allen Watson