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Compaq CQ41 System DMA specifications, System interrupt specifications (for models with discrete graphics subsystems)

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6–6 Maintenance and Service Guide

Specifications

System DMA specificationsSystem interrupt specifications (for models with discrete graphics subsystems)

Hardware DMA System function

DMA0 Reserve

DMA1 Reserve

DMA2 Reserve

DMA3 Reserve

DMA4 Direct memory access controller

DMA5 Reserve

DMA6 Reserve

DMA7 Reserve

Hardware IRQ System function

IRQ1 Standard PS/2 Keyboard

IRQ12 PS/2 Compatible Mouse

IRQ13 Numeric data processor

IRQ16 High Definition Audio Controller

IRQ16 Standard OpenHCD USB Host Controller

IRQ16 Standard Opened USB Host Controller

IRQ17 PCI standard PCI-to-PCI bridge

IRQ17 Standard Enhanced PCI to USB Host Controller

IRQ18 Broadcom 802.11g Network Adapter

IRQ18 PCI standard PCI-to-PCI bridge

IRQ18 PCI standard PCI-to-PCI bridge

IRQ18 Standard OpenHCD USB Host Controller

IRQ18 Standard OpenHCD USB Host Controller

IRQ19 High Definition Audio Controller

IRQ19 PCI standard PCI-to-PCI bridge

IRQ19 Realtek RTL8102E/RTL8103E Family PCI-E Fast Ethernet NIC (NDIS 6.20)

IRQ19 Standard Enhanced PCI to USB Host Controller

IRQ22 Standard AHCI 1.0 Serial ATA Controller

IRQ(-2) ATI Mobility Radeon HD 4330 Series

IRQ81-190 Microsoft ACPI-Compliant System

Contents

Main Page Page Contents 1 Product description 2 External component identification 3 Illustrated parts catalog 4 Removal and replacement procedures 5 Setup Utility 6 Specifications 7 Backup and recovery Page Product description Page Page Page External component identification Top co mpone nts Touch Pad Lights Buttons and speakers Keys Display Front components Page Right-side components Left-side components Bottom components Page Page Illustrated parts catalog Service tag Page Page Page Page Page Display assembly Page Mass storage devices Miscellaneous parts Sequential part number listing Page Page Page Removal and replacement procedures Preliminary replacement requirements Tools require d Service considerations Equipment guidelines Component replacement procedures Service tag Page Battery Hard drive Page Memory module Page RTC battery Page WLAN module Description Spare part number Page Page Page Page Optical drive Keyboard Page Keyboard cove r Page Speaker assembly Page Display assembly Page Page Page Page Page Webcam/microphone module (select models only) Microphone module Top cov er Page Page Bluetooth module and cable (select models only) Page Modem module Page Audio board Page USB board Page Power connector and cable Page System b oard Page Page Page Heat sink/fan assembly or heat sink Page Page Page Fan (for models with UMA graphics subsystems) Processor Page Setup Utility Starting Setup Utility Using Setup Utility Changing the language of Setup Utility Navigating and selecting in Setup Utility Specifications Computer specifications 14.1-in display specifications Hard drive specifications Blu-ray ROM DVDR/RW SuperMulti DL Drive with LightScribe specifications DVDRW SuperMulti DL Drive with LightScribe specifications System DMA specifications System interrupt specifications (for models with discrete graphics subsystems) System interrupt specifications (for models with UMA graphics subsystems) System I/O address specifications (for models with discrete graphics subsystems) Page System I/O address specification (for models with UMA graphics subsystems) Page Backup and recovery Overview Creating recovery discs Backing up your information Page To Create a system restore point Restore to a previous date and time Perfo rming a recove ry Recovering from the recovery discs Connector pin assignments External monitor HDMI RJ-11 (modem) (select models only) RJ-45 (network) Page Power cord set requirements Requirements for all countries and regions Requirements for specific countries and regions Recycling Battery Display Page Page Page Page Page Index