Compaq 850 - page 11

Technical Reference Guide

Compaq Deskpro EXS and Workstation 300 Personal Computers

Featuring the Intel Pentium 4 Processor

First Edition - December 2000

5.6 KEYBOARD/POINTING DEVICE INTERFACE...................................................................5-16

5.6.1 KEYBOARD INTERFACE OPERATION .......................................................................5-16

5.6.2 POINT ING DEVICE INTERFACE OPERATION.......................................................... 5-18

5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING........................... 5-18

5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR.................................. 5-21

5.7 UNIVERSAL SERIAL BUS INTERFACE.............................................................................. 5-22

5.7.1 USB DATA FORMATS.................................................................................................... 5-22

5.7.2 USB PROGRAMMING .................................................................................................... 5-24

5.7.3 USB CONNECTOR .......................................................................................................... 5-25

5.7.4 USB CABLE DATA ......................................................................................................... 5-25

5.8 AUDIO SUBSYSTEM..............................................................................................................5-26

5.8.1 FUNCTIONAL ANALYSIS ............................................................................................. 5-26

5.8.2 AUDIO CONTROLLER ................................................................................................... 5-28

5.8.3 AC97 LINK BUS ..............................................................................................................5-29

5.8.4 AUDIO CODEC ................................................................................................................5-30

5.8.5 AUDIO PROGRAMMING ............................................................................................... 5-31

5.8.6 AUDIO SPECIFICATIONS ..............................................................................................5-32

5.9 NETWORK SUPPORT.............................................................................................................5-33

5.9.1 PCI VER. 2.2 SUPPORT .................................................................................................. 5-33

5.9.2 ALERT-ON-LAN SUPPORT ........................................................................................... 5-33

5.9.3 REMOTE SYST EM ALERT SUPPORT..........................................................................5-35

CHAPTER 6 POWER SUPPLY AND DISTRIBUTION..........................................................................

6.1 INTRODUCTION....................................................................................................................... 6-1

6.2 POWER SUPPLY ASSEMBLY/CONTROL............................................................................. 6-1

6.2.1 POWER SUPP LY ASSEMBLY......................................................................................... 6-2

6.2.2 POWER CONTROL ........................................................................................................... 6-3

6.3 POWER DISTRIBUTION.......................................................................................................... 6-5

6.3.1 3.3/5/12 VDC DISTRIBUT ION..........................................................................................6-5

6.3.2 LOW VOLTAGE PRODUCTION/DISTRIBUT ION.........................................................6-6

6.4 SIGNAL DISTRIBUTION..........................................................................................................6-7

CHAPTER 7 BIOS ROM.............................................................................................................................

7.1 INTRODUCTION....................................................................................................................... 7-1

7.2 ROM FLASHING....................................................................................................................... 7-2

7.2.1 UPGRADING......................................................................................................................7-2

7.2.2 CHANGEABLE SPLASH SCREEN .................................................................................. 7-3

7.3 BOOT FUNCTIONS................................................................................................................... 7-4

7.3.1 BOOT DEVICE ORDER.................................................................................................... 7-4

7.3.2 NET WORK BOOT (F12) SUP PORT................................................................................. 7-4

7.3.3 MEMORY DETECT ION AND CONFIGURATION .........................................................7-5

7.3.4 BOOT ERROR CODES...................................................................................................... 7-5

7.4 SETUP UTILITY........................................................................................................................ 7-6

7.5 CLIENT MANAGEMENT FUNCTIONS................................................................................ 7-12

7.5.1 SYSTEM ID AND ROM TYPE ........................................................................................7-14

7.5.2 EDID RETRIEVE ............................................................................................................. 7-14

7.5.3 T EMP ERATURE STATUS.............................................................................................. 7-14

7.5.4 DRIVE FAULT PREDICTION......................................................................................... 7-15

7.6 PNP SUPPORT......................................................................................................................... 7-15

7.6.1 SMBIOS ............................................................................................................................ 7-16