User Guide

1 Hardware Overview 1.2 System Unit Block Diagram
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BIOS ROM (flash E2PROM)
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4Mb x 1 chip (512KB flash parts)
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64 KB used for system BIOS
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64 KB used for VGA
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20 KB used for PnP
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10 KB for PCI
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24 KB used for Boot Block
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20 KB used for LOGO
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58 KB used for LAN
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64 KB used for EC BIOS
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11 KB used for ACPI
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36 KB used for PM
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13 KB used for SCU
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3 KB used for USB
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2 KB used for CF card
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4 KB used for CPU
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6 KB used for Crisis
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113 KB reserved
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System controllers
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North Bridge: Intel 855 GM (MONTARA-GM)
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CPU interface and control
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DRAM control
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PCI master/slave interface (PCI R2.2 compliant)
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Embedded video controller
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South Bridge: Intel ICH4-M
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Enhanced DMA controller
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Interrupt controller
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Counter/timer
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PCI IDE controller
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Support for ATA-66 (GB) and ATA-100 (30/40/60 GB)
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USB interface
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SMBus interface
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Super I/O interface
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Power management control
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Suspend/resume control
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ACPI support
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PC Card controller
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Ti1520
1-8 Satellite M20 Maintenance Manual