Introduction to 15-inch PowerBook G4 Developer Note 9 Who Should Read This Document?9 Organization of This Document 9 Chapter 1 Overview to the 15-inch PowerBook G4 11 New Features 11 All Features 12 Appearance 14 Peripheral Devices 16 System Software 17 Open Firmware 17 Computer Identification 17 Power Management 18 Chapter 2 Architecture 21 Block Diagram and Buses 21 Block Diagram 21 Main IC and Buses 22 Microprocessor and Cache 23 PowerPC G4 Microprocessor 23 Level 2 Cache 23 Intrepid Controller Functions and Buses 23 System RAM 24 Boot ROM 24 FireWire Controller 24 Ethernet Controller 24 Video Display Subsystem 25 DMA Support 26 Interrupt Support 26 USB 2.0 Interface 26 Ultra DMA/100 Interface 26 EIDE Interface
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