Apple Desktop Computer manual

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Apple Desktop Computer manual

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 PowerPC G3 Microprocessor Supplemental Reference DocumentsMac OS 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 Video RAM Expansion Modules Main RAM Expansion ModulesUSB Ports and Devices Page Architecture Architecture G3 Microprocessor Processor moduleBackside Cache Memory Controller and PCI Bridge Main Logic BoardController IC Video Display Subsystem USB ControllerBuilt-in Modem Infrared Link Module Devices and Ports USB Connectors USB Ports Transfer Types Supported GND USB Compatibility Issues ADB Compatibility Serial Port Compatibility Macintosh-To-Macintosh ConnectionsUSB Storage Devices USB Controller Keyboard Keyboard Layout Mouse Keyboard and USB Hard Disk Drive Video Display Infrared Communication Link Sound System Sound Inputs Sound OutputsBuilt-in Microphone External Sound Input External Sound Output Sound SpeciﬁcationsHeadphone Jacks Total harmonic distortion Ethernet Port Internal ModemPage RAM Expansion Expansion Slots Removing the Logic Board AssemblyPlacing 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 Performance RAM FootprintUser Experience Data Structures and Files Boot ROM Contents Mac OS ndrv Drivers Rtas Toolbox Image File Contents Trampoline Code NewWorld Boot ProcessToolBox ROM Image What Is Different Interrupt Handling Outmoded Resources RAM Footprint NanoKernel Startup Disk Control Panel Interrupt Layout Open Firmware and the Device TreeMachine Identiﬁcation Software Abbreviations Chrp NMI Page Index Nvram X, Y, Z Allen Watson