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Technical Reference Guide For Compaq Deskpro EXS and Compaq Deskpro Workstation 300 Personal Computers Featuring the Intel Pentium 4 Processor And the Intel 850 Chipset.
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Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 i NOTICE The information in this document is su bject to change with out notice.
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 ii.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 iii TABLE OF CONTENTS CHAPTER 1 IN TRODUCTION .............................................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 iv CHAPTER 4 SYSTE M SUPPORT .........................................................
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 v 5.6 KEYBOARD/POINTING DEVICE INTERFAC E .................................................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 vi 7.7 POWER MANA GEMENT FUNCTIONS ...................................................
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 vii APPENDIX D COMPAQ/NVIDIA TNT 2 PRO AGP GRAPHICS CARD ..................................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 viii APPENDIX H COMPAQ/MATROX M ILLENNIUM G450 AGP GRAPHI CS CARD ....................
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 ix K.4.2 AOL/SOS CONNECTOR ................................................................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 x LIST OF FIGURE S F IGU R E 2–1. C OMPAQ D ESKPRO P ERSO NAL C OMPU TE RS WITH M ONI TORS .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 xi F IGU R E C–1. K EYSTROK E P ROCES SI NG E LEM E N TS , B LOC K D IAGR AM ............
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 xii F IGU R E L–1. C OMPAQ /A DAPTEC 29160N SCS I H OST A DA PT ER C AR D L AYOUT (PCA # 157342-001) .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 xiii LIST OF TABLES T ABLE 1–1. A CR ONYM S AND A BBREVI ATI ONS ........................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 xiv T ABLE 5–19. USB C ONNECTOR P INO U T ..........................................
Technical Reference Guide Compaq Deskpr o EXS and Wor kstation 300 Per sonal Com puters Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 xv T ABLE H-1. M ATR O X M IL L ENNIUM G450 G RAPHI CS D I SPLA Y M ODES ..................
Technical Reference Guide Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Proces sor First Edition –- D ecember 2000 xvi This page is intentionally blank.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition – Decem ber 2000 1-1 Chapter 1 INTRODUCTION 1.
Chapter 1 Int roduction Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Pr ocessor First Edition – Decem ber 2000 1-2 1.3 NOTA TIONA L CONVENTIONS 1.3.1 VA LUES Hexadecim al values are in dicated by a n um erical or alpha- num erical value f ollow ed by th e letter “h.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition – Decem ber 2000 1-3 1.4 COMMON ACRONYMS A ND ABBREVIA TIONS Table 1 -1 lists the acronyms an d abbreviations used in this gu ide.
Chapter 1 Int roduction Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Pr ocessor First Edition – Decem ber 2000 1-4 Table 1- 1.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition – Decem ber 2000 1-5 Table 1- 1.
Chapter 1 Int roduction Compaq Des kpro EXS and W orks tation 300 Per sonal Com puters Featuring the Int el Pentium 4 Pr ocessor First Edition – Decem ber 2000 1-6 Table 1- 1.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-1 Chapter 2 SYSTEM OVERVIEW 2.
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-2 2.2 FEATURES A ND OP TIONS This section describes the stan dard features an d available options.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-3 2.
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-4 2.3 MECHANICA L DESIGN The follow ing s ubsections describe the m echan ical (phy sical) aspects of the cov ered Compaq Desk pro model s.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-5 2.3.1.2 Rear View Figure 2- 3 show s th e rear cabinet lay out of th e controls an d connectors .
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-6 2.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-7 2.3.3 BOA RD LA YOUT These sy stem s us e an ATX-ty pe sy stem board. Fig ure 2-5 sh ow s the location of sockets , connectors, h eaders, sw itch es, jum pers, and LEDs .
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-8 2.4 SYSTEM A RCHITECTURE These sy stem s f eature arch itecture bas ed on th e Intel Pen tium 4 process or and the In tel 850 chi pset (Figure 2- 6).
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-9 Figure 2–6. Sy stem Architectu re, Block diagram 82801BA ICH2 Pri. IDE I/F USB I/F (4) Pow er Supply 82802 FW H Sec.
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-10 2.4.1 PENTIUM 4 PROC ESSOR These sys tem s feature th e Intel Pentium 4 processor featu ring Intel’ s NetBurst Micro- Architectu re.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-11 2.4.2 CHIPSET The chipset cons ists of a Mem ory Controller Hu b (MCH), an I/O C ontroller Hub (IC H), and a FirmWare Hub (FWH).
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-12 2.4.4 SYSTEM MEMORY These sy stem s featu re a dual-chan nel Direct Ram bus (R DRAM) arch itecture.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-13 2.4.8 GRA PHICS S UBSYSTEM Each of th ese sy stem s prov ides an A GP slot that accom m odates a Type 1 or Ty pe 2 AGP graph ics adapter (1.
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-14 2.4.9 A UD IO SUBSYSTEM All model s featu re an em bedded Sou nd Blast er 128 PCI audi o sy stem us ing the A C’97 v er.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 2-15 Table 2-7. Phy sical Specification s Table 2- 7. Phy sical Spec ifications Parameter Desktop Configuration Mini tower Configuration Height 6.
Chapter 2 Sys tem Overview Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition – Decem ber 2000 2-16 Table 2-9. 48x C D-ROM Driv e Specifications Table 2- 9. 48x CD-ROM Dr ive Specific ations (SP# 187217-B21) Parameter M easurement Interfac e Type IDE Transfer Rate : Max.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 3-1 Chapter 3 PROCESSOR/ MEMORY SUBSYSTEM 3.
Chapter 3 Pr ocessor/ Memory Subs ystem Compaq Des kpro EXS and W orkst ation 300 Pers onal Computer s Featuring the Int el Pentium 4 Pr ocessor First Edition - D ecember 2000 3-2 3.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 3-3 Figure 3-1 illustrates the in ternal architecture of the Pentiu m 4 processor. Figure 3–2.
Chapter 3 Pr ocessor/ Memory Subs ystem Compaq Des kpro EXS and W orkst ation 300 Pers onal Computer s Featuring the Int el Pentium 4 Pr ocessor First Edition - D ecember 2000 3-4 The Pentium 4 proces.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 3-5 3.3 ME MORY SUBSYSTEM The 82850 MCH features Direct Ram bus techn ology and supports tw o Ram bus chan nels, each chann el support ing up to tw o Ram bus DRA M m odules (R IMMs).
Chapter 3 Pr ocessor/ Memory Subs ystem Compaq Des kpro EXS and W orkst ation 300 Pers onal Computer s Featuring the Int el Pentium 4 Pr ocessor First Edition - D ecember 2000 3-6 3.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 3-7 3.3.2 RAMBUS CHA NNEL TRA NS ACTIONS Transactions on th e Ram bus Ch annel in volve packets of control (row or column) bits an d packets of data bits.
Chapter 3 Pr ocessor/ Memory Subs ystem Compaq Des kpro EXS and W orkst ation 300 Pers onal Computer s Featuring the Int el Pentium 4 Pr ocessor First Edition - D ecember 2000 3-8 3.3.3 RDRA M POWER MANA GEME NT The Ram bus architectu re provides f or power m an agem ent of each RDR AM dev ice on a RIMM.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 3-9 The mem ory controller an d RDRA M are config ured by BIOS during POST. Refer to Chapter 8 f or the con fig uration procedure perform ed by BIOS.
Chapter 3 Pr ocessor/ Memory Subs ystem Compaq Des kpro EXS and W orkst ation 300 Pers onal Computer s Featuring the Int el Pentium 4 Pr ocessor First Edition - D ecember 2000 3-10 3.4 SUBS YSTEM CONFIGURA TION The MCH compon ent provides the conf iguration fun ction for the proces sor/m emory su bsy stem .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-1 Chapter 4 SYSTEM SUPPORT 4.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-2 4.2 PCI BUS OVERVIEW NOTE: This section de scrib es the PCI bus in general and high lights bus im plemen tation in this particular sy stem .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-3 4.2.1 PCI BUS TRA NSA CTION S The PCI bus consists of a 32-bit path (AD31-00 lines) that uses a m ultiplexed schem e for handling both address an d data transf ers.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-4 Two ty pes of con figu ration cy cles are us ed. A Type 0 (zero) cy cle is targ eted to a device on the PCI b us on which the c ycle is runni ng.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-5 Not required The register index (CF8h, bits <7..2>) identifies the 32-bit location within th e configu ration space of the PCI dev ice to be accessed.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-6 4.2.2 PCI BUS MA STER A RBITRA TION The PCI bus s upports a bus m aster/ target arbi tration s chem e.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-7 4.2.3 OPTION ROM M A PPING During POST, the PCI bus is scann ed for devices th at contain th eir ow n specifi c firm w are in ROM.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-8 4.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-9 4.2.8 PCI CONNECTOR Figure 4-4. PCI Bu s Con nector (32- Bit Ty pe) Table 4-4. PCI B us Co nnecto r P inout Table 4- 4.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-10 4.3 A GP BUS OVER VIEW NOTE: This section pr o vides a brief description of AGP bus operatio n.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-11 4.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-12 A GP 2X Transfers During A GP 2X transf ers, clocking is basically the sam e as in 1X transf ers except that th e 66-MHz CLK signal is u sed to qualify only the control sign als.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-13 4.3.2 AGP CONFIGURA TION AGP bus operations require the configu ration of certain param eters involving system m emory access by the A GP graphics adapter.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-14 4.3.3 AGP CONNECTOR Figure 4-8. 1.5-V olt A GP Bus Conn ector Table 4-6. AGP Bus Co nne ctor Pino ut Table 4- 6.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-15 4.4 SYSTE M RESOURCES This section describes the availability and basic control of major subsy stem s, otherw ise know n as resource allocation or si mply “s ys tem res ources.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-16 8259 Mode In 8259-Mode, i nterru .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-17 NOTE: The APIC m ode is su pported by Win dow s NT/2000 operatin g sy st em s. Sy stem s using the Window s 95 or 98 operating sy stem w ill need to ru n in 8259 m ode.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-18 The NMI Status Regi ster at I/O p.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-19 4.4.2 DIRECT MEMORY A CCESS Direct Memory Acces s (DMA) is a meth od by wh ich a devi ce accesses sy st em m em ory with out involving the microp roc e sso r.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-20 4.5 SYSTEM CLOCK DISTRIBUTION These sy stem s use an Intel CK- type clock generator and cry stal f or generating the clock s ignals required by the s y stem board com ponent s.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-21 4.6.1 CLEA RING CMOS The contents of config uration m em ory (includin g the Pow er-On Pass w ord) can be cleared by the follo wing pro ced ures: 1.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-22 4.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-23 RTC Control Register A, Byte 0 Ah Bit Function 7 Updat e i n P rogress. Read onl y. 0 = Time update will not occ ur before 2444 us 1 = Time update will occur within 2444 us 6.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-24 Configurat io n Byte 0 Eh, Dia g nostic Status Default V al ue = 00h This b yte conta ins dia gno stic st a tus dat a .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-25 Configurat io n Byte 13 h, Security.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-26 Configurat ion Byte s 1 9h-1Ch, Ha rd Drive Types Byte 19h contains the hard drive ty pe for drive 1 of the prim ary controller if byte 12h bits <7.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-27 Configuratio n B yte 26h, Auxiliary.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-28 Configurat ion Byte 2 9h, M iscella neous Configura tion Data Default V al ue = 00h Bit Function 7.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-29 Configurat io n Byte 2 Dh, Addit ional Flags Default V al ue = 00h Bit Function 7.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-30 Configurat io n Byte 3 5 h, APM St atus Flag s Default V al ue = 11h Bit Function 7.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-31 4.7 SYSTEM MA NA GEMENT Thi s se ctio n desc r ibe s functio ns ha ving to d o with secur ity, po wer management, te mperat ur e, a nd overall statu s.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-32 4.7.1.3 Cable Lock Provision These sy stem s include a ch assis cu tout (on th e rear panel) for the attach m ent of a cable lock mech anism .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-33 4.7.3 SYSTEM STA TUS These sy stem s prov ide a visu al indi cation of sy stem boot and R OM flas h statu s th ro ugh the key board LED s as lis ted in table 4- 12.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-34 4.7.4 TE MP ERA TURE SENSING A ND COOLING These sy stem s feature a f an integ rated into the pow er su pply as sem bly.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-35 4.8 REGIS TER MA P A ND MISCELLA NEOUS FUNCTIONS This section contains the sy stem I/O m ap and inf ormation on gen eral-purpose fun ctions of the ICH and I/O controller.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-36 4.8.2 82801 ICH GENERA L PURPOSE FUNCTIONS The 82801 ICH2 com ponent in cludes a nu mber of sin gle and m u lti-purpose pin s available as general-purpose in put/output (GPIO) ports.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-37 4.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-38 4.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 4-39 4.
Chapter 4 Sys tem Support Compaq Des kpro EXS and W orks tation 300 Per sonal C omputers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 4-40 This page is intentionally blank.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-1 Chapter 5 INPUT/OUTPUT INTERFA CES 5. Chapter 5 INPUT/OUTPUT INTERFACES 5.1 INTRODUCTION This chapter describes th e standard (i.
Chapter 5 Input /Output Int erfaces 5-2 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 Hard drives types not .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-3 5.2.2 IDE CONNECTOR This sy stem uses a standard 40- pin conn ector for the prim ary IDE device an d connects (via a cable) to the hard drive installed in the righ t side drive bay.
Chapter 5 Input /Output Int erfaces 5-4 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-5 5.3.1 DISKETTE DRIVE PR OGRA MMING Programm ing the disk ette drive interf ace consists of config uration, w h ich occurs ty pically during POST, and control, w hich occurs at runtim e.
Chapter 5 Input /Output Int erfaces 5-6 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 Table 5- 5. Disk ette Drive Interfac e Control Registers Pri. A ddr. Sec.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-7 5.3.2 DIS KETTE DRIVE CONNECTOR This sy stem uses a standard 34- pin con nector (ref er to Fig ure 5-2 an d Table 5-6 for t he pinou t) for disket t e dr i ves.
Chapter 5 Input /Output Int erfaces 5-8 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.4 SERIA L INTERFA CE All m odels inclu de two s erial interfaces to tran sm it and receive asy nch ronous s erial data w ith external dev ices.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-9 5.4.2 SERIA L INTERFA CE PROGRA MMING Programm ing the serial in terfaces cons ists of configu ration, w hich occurs durin g POST, and cont r ol, which occur s dur ing runti me.
Chapter 5 Input /Output Int erfaces 5-10 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.4.2.2 Serial Interface Control The BIOS function INT 14 provides bas ic control of the serial interf ace.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-11 5.
Chapter 5 Input /Output Int erfaces 5-12 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-13 5.
Chapter 5 Input /Output Int erfaces 5-14 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.5.4.2 Parallel Interface Control The BIOS function INT 17 provides s im plified control of the parallel interf ace.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-15 5.5.5 P A RA LLE L INTE RFA CE CONNECTOR Figure 5- 4 and Table 5-12 show the connector and pinout of the parallel in terface conn ector.
Chapter 5 Input /Output Int erfaces 5-16 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-17 Control of the dat a and clock sign als is shared by th e 8042and th e key board dependin g on t he originator of the transferred data.
Chapter 5 Input /Output Int erfaces 5-18 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-19 5.6.3.2 8042 Control The BIOS function INT 16 is typically us ed for controlling interaction w ith the key board.
Chapter 5 Input /Output Int erfaces 5-20 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 Table 5-15 list s the com m an ds that can be sen t to the 8042 by th e CPU.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-21 5.6.4 KE YBOARD/POINTING DEVICE INTERFA CE CONNECTOR The legacy -l ight model provides s eparate PS/2 con nectors f or the k ey board and point ing device.
Chapter 5 Input /Output Int erfaces 5-22 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-23 The USB transm issions consist of packets u sing on e of f our types of form ats (Fig ure 5-8) th at inclu de tw o or m ore of sev en fi eld ty pes.
Chapter 5 Input /Output Int erfaces 5-24 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.7.2 USB PROGRA MM ING Programm ing the USB interface con sists of config uration, w hich typically occurs during POST, and control, w h ich occurs at ru ntim e.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-25 5.7.3 USB CONNE CTOR Four series- A conn ectors are accessi ble on the rear pane l of the ch assis.
Chapter 5 Input /Output Int erfaces 5-26 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.8 AUDIO SUBSYSTEM The sy stem s cov ered in th is gu ide com e stan dard w ith an em bedded Soun d Blaster 128 au dio subsystem.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-27 Figure 5-9.
Chapter 5 Input /Output Int erfaces 5-28 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-29 5.8.3 A C97 LIN K BUS The audio controller an d the audio codec com m uni cate over a fiv e-sig nal A C97 Lin k Bus (Fig ure 5-12).
Chapter 5 Input /Output Int erfaces 5-30 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-31 5.8.5 A UD IO PROGRA MMIN G Audio s ubsy stem program m ing con sists con figu ration, ty pically accom plish ed during POST, and cont r ol, which occur s dur ing runti me.
Chapter 5 Input /Output Int erfaces 5-32 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 5.8.6 A UD IO SPECIFICA TIONS The specifications for the audio s ubsy stem are listed in Table 5-23.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-33 5.9 NETW ORK S UPPORT These sy stem s include s pecific featu res to support n etwork interface PCI cards that m ay be instal led.
Chapter 5 Input /Output Int erfaces 5-34 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 As s how n i n th e f.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 5-35 5.9.3 REMOTE SYSTEM A LER T SUPPORT These sy stem s prov ide Rem ote Sy st em A lert (R SA) s upport for s uch NIC cards as th e 3Com 3C905C- TX NIC card.
Chapter 5 Input /Output Int erfaces 5-36 Com paq Deskpr o EXS and Wor kstati on 300 Personal Computer s Featuring the Inte l Pentium 4 Proces sor First Edition – Decem ber 2000 Reportable RSA events are listed in the follow ing table: Table 5–25 .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 6-1 Drives 110/230 VAC 115/230 VAC Select SW Chapter 6 POWER and SIGNA L DISTRIBUTION 6. Chapter 6 POWER SUPPL Y A ND DISTRIBUTIO N 6.
Chapter 6 Pow er and Signal Dist ributi on Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 6-2 6.2.1 POWER SUPPLY A SSEMBLY The power su pply assem bly is con tained in a s ingle u nit that f eatures a selectable inpu t voltage: 90-132 VAC and 180-264 VA C.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 6-3 6.2.2 P OWER CONTROL The power supply assem bly is controlled digitally by the PS On signal (Fig ure 7-1).
Chapter 6 Pow er and Signal Dist ributi on Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 6-4 6.2.2.3 Power LED Indications A dual- color LED located on th e front pan el (bezel) is us ed to indicate sy stem pow er statu s.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 6-5 6.3 POW ER DISTRIBUTION 6.3.1 3.3/5/12 VDC DISTR IBUTION The power supply assem bly includes a m ulti-conn ector cable assembly th at routes +3.
Chapter 6 Pow er and Signal Dist ributi on Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 6-6 6.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 6-7 6.4 SIGNA L DISTRIBUTION Figures 6-4 shows g eneral signal distribution between th e main su bassemblies of the sy stem un its.
Chapter 6 Pow er and Signal Dist ributi on Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 6-8 NOTE: No polarit y c onsiderat i on requi red f or connect i on t o speaker header P 6 or S CSI HD LED header P 29.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-1 Chapter 7 BIOS ROM 7.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-2 7.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-3 7.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-4 7.3 BOOT FUNCTIONS The BIOS support s vari ous f unct ions rel ated to th e boot process, i ncludi ng th ose th at occur du ring the Power On Self -Test (POST) ro utine.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-5 7.3.3 ME MORY DE TECTION A ND CONFIGURA TION This sys tem uses th e Serial Presence Detect (SPD) method of determin ing th e installed RIMM configuration.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-6 7.4 SETUP UTILITY The Setup utility (stored in ROM) allow s the us er to configure sy stem f unctions in volving secu rity, power m anagem ent, and sy stem resou rces.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-7 Table 7- 3.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-8 Table 7- 3.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-9 Table 7- 3.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-10 Table 7- 3. Setup Utility Functions Continued Heading Option Description Power E nergy S aver Allo ws us er t o set t he energy s aver mode (advanced, dis able, or m inim al ).
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-11 Table 7- 3.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-12 7.5 CLIENT MANA GEME NT FUNCTIONS Table 7-4 lis ts th e client man agem en t BIOS f unc tions s upported by th e sy stem s covered in this guide.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-13 To support Window s NT an additional table to th e BIOS32 table has been def ined to cont ain 32- bit pointers for the DDC locations.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-14 7.5.1 SYSTEM ID A ND ROM TY PE Applicat ions can use th e INT 15, AX=E800h BIOS fun ction t o identif y t he ty pe of s ys tem .
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-15 7.5.4 DRIVE FA ULT PREDICTION The Com paq BIOS directly su pports Dri ve Fau lt Prediction for IDE- ty pe hard driv es.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-16 7.6.1 SMBIOS In su pport of th e DMI specif ication the Pn P fu nction s 50h an d 51h are u sed to retriev e the SMBIOS data.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-17 7.7 PO WER MA NA GEMENT FUNCTIONS The BIOS ROM prov ides th ree ty pes of pow er manag eme nt su pport: in dependent PM support; APM su pport, and A CPI s upport.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-18 7.7.1.2 Going to Sleep in Independent PM When a tim e-out tim er expires , Standby for that tim er occurs.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-19 7.7.2 A CPI SUPPORT This sy stem m eets the hardw are and firmw are requirements f or being A CPI complian t.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-20 Table 7-6.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-21 7.7.3.1 St ay ing A w ake in A PM There are two "Time-ou t to Standby " timers u sed in A PM: the Sys tem Tim er and the IDE had D r ive T imer.
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-22 7.7.3.2 Going t o Sleep in A P M There are three levels of s ys tem sleep in A PM: System /Hard Drive Stan dby, Sy stem Suspend, and Sy st em Of f.
Technical Reference Guide Compaq Deskpr o EXS and Wor kstati on 300 Personal C omputers Featuring the Intel Pentium 4 Process or First Edition - D ecember 2000 7-23 Sy stem OFF There are two w ay s to tu rn the sy stem of f: 1. Press and h old the pow er button f or longer th an 4 secon ds ( not recomm ended u nless absolutely necessary ).
Chapter 7 BIOS RO M Compaq Des kpro EXS and W orks tation 300 Pers onal Comput ers Featuring the Int el Pentium 4 Proces sor First Edition - D ecember 2000 7-24 This page is intentionally blank.
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-1 A ppendix A ERROR MESSA GES A ND CODES A. Appendi x A ERROR MESSAGES AND CODES A .1 INTRODUCTION This appendix list s the error codes and a brief description of th e probable caus e of th e error.
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-2 A .3 POWER-ON SELF TEST ( POST) MESSA GES Table A–2. Power-On Self Test ( POST ) Messa ge s Table A-2. Power-On Self Test (POST) Messages Error Message Probable Cause Invalid E l ec tronic S erial Num ber Chassi s serial num ber is c orrupt.
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-3 A .4 SYSTEM ERROR MESSA GES (1xx-xx) Table A–3. Sy st em Error Mes sages Table A-3.
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-4 A .5 MEMORY ERR OR MESSA GES (2xx-xx) Table A–4. Mem ory Error Messag es Table A-4.
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-5 A .7 PRINTER ERROR MESSA GES (4xx-xx) Table A–6. Printer Error Mess ages Table A-6. Printer Error Messages Message P robabl e Cause Message Probable Cause 401-01 Printer fai l ed or not c onnected 402-11 Interrupt test , dat a/cnt rl .
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-6 A .9 DISKETTE DRIVE ERROR M ESSA GES (6xx- xx) Table A–8.
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-7 A .11 MODEM C OMMUN ICA TIONS ERROR MESSA GES (12xx-xx) Table A–10.
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-8 A .12 SYSTEM STA TUS ERROR M ESSA GES (16xx- xx) Table A–11. Sy st em S tatus Error Mess ages Table A-11. Sy stem Status Error Messages Message P robabl e Cause 1601-xx Tem perature viol at ion 1611-xx Fan f ai l ure A .
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-9 A .14 HA RD DRIVE ERROR MESSA GES (19xx-xx) Table A–13. Hard Drive Error Mes sages Table A-13.
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-10 A .16 A UD IO ERROR M ESSA GES ( 3206-xx) Table A–15. A udio Error Mess ages Table A-15. Audio Error Message Message P robabl e Cause 3206-xx A udio subsys tem internal error A .
Technical Reference Guide Compaq Personal Computers Changed – November 2000 A-11 A .19 SCSI INTERF A CE ER ROR MESSA GES (65xx-xx, 66xx-xx, 67xx-xx) Table A–18.
Appendix A Error Mess ages and Codes Compaq Pers onal Computer s Changed - November 2000 A-12 This page is intentionally blank..
Technical Reference Guide Compaq Personal Computers Changed - July 2000 B-1 A ppendix B A S CII CHARA CTER SET B. Appendix B ASCII CHARACTER SET B.1 INTRODUCTION This appendix lists , in Table B-1, th e 256-ch aracter AS CII code set in cludin g th e decim al and hexadecimal v alues.
Appendix B ASCII Char acter Set Compaq Pers onal Comput ers Changed - July 2000 B-2 Dec Hex Symbol Dec Hex Symbol Dec Hex Symbol Dec Hex Sy mbol 128 80 Ç 160 A 0 á 192 C0 └ 224 E0 α 129 81 ü 161.
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-1 A ppendix C KEYBOA RD C. Appendix C KEYBOA RD C.1 INTRODUCTION This appendix describ e s the Compaq keyboard that is included as standard with th e system un it.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-2 C.2 KEYSTR OKE PR OCESSING A functiona l blo ck di a gram of the ke ystroke p ro c essing ele ments is shown in Figure C-1. P ower (+5 VDC) is o btained from the system through the PS/2 -type interface.
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-3 C.2.1 PS/2-TYPE K EYBOA RD TRA NSM ISSIONS The PS/2-type keyboard sends tw o main ty pes of data to the system ; comm ands (or responses to sy stem com man ds) and key strok e scan codes .
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-4 C.2.2 USB-TYP E KEYBOA RD TRA NSMISSIONS The USB-type key board sends essentially the sam e inform ation to the system that th .
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-5 C.2.3 KEYBOARD LA YOUTS Figures C-3 thro ugh C-8 show the key layouts fo r keyboa r ds ship ped with Co mpa q systems. Actual styling details including location of the Com paq logo as well as the nu mbers lock, caps lock, and scroll lock LEDs may vary .
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-6 C.2.3.2 W indow s Enhanced Keyboards Figure C–5. U.S. Eng lish Win dow s (101W-Key ) Key board Key Position s Figure C–6.
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-7 C.2.3.3 Easy A ccess Key boards The Easy A ccess k eyboard is a Window s Enh anced- type k eyboard th at includes s pecial buttons allowin g quick intern et navigation. Depending on system , either a 7- button or an 8-button lay out ma y be s uppli ed.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-8 C.2.4 KEY S All key s g enerate a m ake code (w h en pressed) an d a break code (w hen released) w ith th e exception of the Pause key (pos. 16), w h ich produ ces a m ake code on ly .
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-9 C.2.4.2 Multi-Keystroke Functions Shift - T he Sh ift key (pos . 75/86), w hen h eld dow n, produ ces a sh ift state (upper cas e) for ke ys in positions 17-29, 30, 3 9 -51, 60-70, and 76 -85 as lo ng as the Caps Lock k ey (pos.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-10 C.2.4.4 Easy A ccess Key strokes The Easy Access k eyboards (Figures C-7 and C-8) include additional key s (also referred to as buttons) u sed to stream line in ternet access an d navig ation.
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-11 C.2.5 KEYBOARD COMMA NDS Table C-1 lis ts the com mands th at the k eyboard can send to t he sy stem (speci fically , to th e 8042- type logic). Table C–1. Key board- to-Sy stem Com m ands Table C- 1.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-12 Table C–2. Key board Scan Codes Table C- 2. Key board Scan Codes Key Pos. Legend M ode 1 Mode 2 Mode 3 1 Esc 01/81 76/F0 76 .
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-13 Tab le C- 2 . Key board Scan Codes ( Continued) Key Pos Legend Mode 1 Mode 2 Mode 3 41 W 11/91 1D/F0 1D 1D/F0 1D 42 E 12.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-14 Tab le C- 2 . Key board Scan Codes ( Continued) Key Pos. Legend M ode 1 Mode 2 Mode 3 81 N 31/B1 31/F0 31 31/F0 31 82 M 32/B 2 3A/ F 0 3A 3A/F0 3A 83 , 33/B3 41/F0 41 41/F0 41 84 .
Technical Reference Guide Compaq Personal Computers Changed –- July 2000 C-15 Tab le C- 2 . Key board Scan Codes ( Continued) Key Pos. Legend Mode 1 M ode 2 M ode 3 Btn 1 [8] E0 1E/E 0 9E E0 1C/E0 F.
Appendix C Keyboar d Compaq Pers onal Computer s Changed - July 2000 C-16 C.3 CONNECTORS Two ty pes of k ey board interfaces are u sed in C ompaq sy stem s: PS/2-ty pe and USB-ty pe. Sy stem units th at provide a PS/2 conn ector will s hip w ith a PS/2- type k eyboard bu t may also s upport sim ultaneou s connection of a USB key board.
Technical Reference Guide Compaq Personal Computers Original - July 2000 D-1 A ppendix D COMPA Q/NVIDIA TNT2 PRO A GP GRA PHICS CA RD D. Appendix D Compaq/NVIDI A TNT2 P ro AGP Graphics Card D.
Appendix D Compaq/N VIDIA TN T2 Pro AGP Gr aphics Car d Compaq Pers onal Computer s Original - July 2000 D-2 D.2 FUNCTIONA L DESCRIPTION The NVIDIA TNT2 Pro-SD G raphics C ard provides hig h perform an ce 2D and 3D di splay imag ing.
Technical Reference Guide Compaq Personal Computers Original - July 2000 D-3 D.3 DISPLA Y MODES The graphics display m odes s upported by th e NVIDIA TNT2 Pro Graphics are list ed in Table D- 1. Table D-1. NVIDIA TNT2 Pro Graphics Display Modes Table D- 1.
Appendix D Compaq/N VIDIA TN T2 Pro AGP Gr aphics Car d Compaq Pers onal Computer s Original - July 2000 D-4 D.4 SOFTWA RE SU PPORT INFORM A TION The NVIDIA TNT2 Pro graphics card is fully com patible with softw are w ritten for legacy video modes (VGA , EGA, C GA) an d needs n o driver su pport for t hose m odes.
Technical Reference Guide Compaq Personal Computers Original - July 2000 D-5 D.6 CONNECTORS There are two con nectors ass ociated with the graph ics subs ys tem; the display /m onitor connector and the Feature con nector. NOTE: T he graphic card’s edg e connector m ates w ith the AGP sl ot connector on th e sy stem board.
Appendix D Compaq/N VIDIA TN T2 Pro AGP Gr aphics Car d Compaq Pers onal Computer s Original - July 2000 D-6 This page is intentionally blank..
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 E-1 A ppendix E COMPA Q/NVIDIA GeForce2 GTS A GP GRA PHICS CA RD E. A ppendix E Compaq/NVIDIA GeForce2 GTS A GP Graphics Card E.
Appendix E Compaq/N VIDIA GeForce2 GT S AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 E-2 E.2 FUNCTIONA L DESCRIPTION The NVIDIA GeForce2 GTS-SD Graphics Card provides h igh perform ance 2D and 3D dis play imag ing.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 E-3 E.3 DISPLA Y MODES The graphics display m odes s upported by th e NVIDIA G eForce2 GTS Graphics are liste d in Table E-1. Table E-1 . NVIDIA GeForce2 GTS Graphics Display Modes Tab le E-1.
Appendix E Compaq/N VIDIA GeForce2 GT S AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 E-4 E.4 SOFTWA RE SUPPORT INFORMA TION The NVIDIA GeForce2 GTS graphics card is fully com patible with softw are w ritten for legacy video m odes (VG A, EGA , CGA ) and n eeds no driv er support for th ose m odes.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 E-5 E.6 CONNECTORS There are two con nectors ass ociated with the graph ics subs ys tem; the display /m onitor connector and the Feature con nector. NOTE: T he graphic card’s edg e connector m ates w ith the AGP sl ot connector on th e sy stem board.
Appendix E Compaq/N VIDIA GeForce2 GT S AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 E-6 E.6.2 VIDEO FE ATURE CONNECTOR The Video Feature connector allow s a video peripheral such as a TV tuner card to provide v ideo input to the g raphics card.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 F-1 A ppendix F COMPA Q/LUCENT V.90 56K PCI MODEM F. A ppendix F Compaq/Lucent V . 90 56K PCI M odem F.1 INTRODUCTION This appendi x descri bes th e Com paq/Lu cent V .90 56K PCI m odem (Com paq SP# 146803- 001).
Appendix F Compaq/L ucent V.90 56K PCI M odem Compaq Pers onal Computer s Original - D ecember 2000 F-2 F.2 FUNCTIONA L DESCRIPTION The Compaq/L ucent V.90 56K PCI m odem provides data comm u nication ov er a standard telephon e netw ork at transf er rates of u p to 56 kil obits per secon d.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 F-3 F.3 OPERA TING PA RAMETERS The operating parameters consists of UART transfer rates and transm ission m odes.
Appendix F Compaq/L ucent V.90 56K PCI M odem Compaq Pers onal Computer s Original - D ecember 2000 F-4 F.4 POWE R MA NA GEMENT The modem s upports bot h A PM and AC PI pow er m anage me nt en vironm ents usin g m eth ods defin ed in th e PCI 2.2 speci ficati on.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 G-1 A ppendix G COMPA Q/ELSA Gloria II A GP GRA PHICS CA RD G. A ppendix G Compaq/ELSA Gloria I I Graphi cs Car d G.
Appendix G Compaq/EL SA GLori a II AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 G-2 G.2 FUNCTIONA L DESCRIPTION The ELSA GLoria II-SD Graph ics C ard provides h igh perform ance 2D an d 3D displa y i mag ing .
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 G-3 G.3 DISPLA Y MODES The graphics display m odes s upported by th e ELSA GLori a II Graphics are listed i n Table G-1. Table G-1 . ELSA GL oria II Graphics Display Modes Table G -1.
Appendix G Compaq/EL SA GLori a II AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 G-4 G.4 SOFTWA RE SUPPORT IN FORMA TION The ELSA GLoria II graphics card is f ully compatible w ith softw are w ritten f or legacy v ideo modes (VGA , EGA, C GA) an d needs n o driver su pport for t hose m odes.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 G-5 G.6 CONNECTORS There are two con nectors ass ociated with the graph ics subs ys tem; the display /m onitor connector and the Feature con nector. NOTE: T he graphic card’s edg e connector m ates w ith the AGP sl ot connector on th e sy stem board.
Appendix G Compaq/EL SA GLori a II AGP Graphics Card Compaq Pers onal Computer s Original - Novem ber 2000 G-6 G.6.2 VIDEO FEATURE CONNECTOR The Video Feature connector allow s a video peripheral such as a TV tuner card to provide v ideo input to the g raphics card.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 H-1 A ppendix H COMPA Q/Matrox Millennium G450 A GP GRA PHICS CA RD H. A ppen dix G Compaq /Matrox Millennium G450 A GP Graph ics Card H.
Appendix H Compaq/Matrox Millennium G450 AGP Graphics C ard Compaq Pers onal Computer s Original - Novem ber 2000 H-2 H.2 FUNCTIONA L DESCRIPTION The Matrox Millenni um G450-SD Graphi cs Card prov ides hig h perform an ce 2D and 3D display imag ing.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 H-3 H.3 DISPLA Y MODES The graphics dis play m odes su pported by the Matrox Millen nium G450 Graphi cs are listed in Table H-1. Table H- 1. Matrox Millennium G450 Graphics Display Modes Table H- 1.
Appendix H Compaq/Matrox Millennium G450 AGP Graphics C ard Compaq Pers onal Computer s Original - Novem ber 2000 H-4 H.4 SOFTWA RE SU PPORT INFORM A TION The Matrox Millenniu m G450 g raphics card is fully com patible w ith softw are written for legacy video m odes (VG A, EGA , CGA ) and n eeds no driv er support for th ose m odes.
Technical Reference Guide Compaq Personal Computers Original - Novem ber 2000 H-5 H.6 CONNECTORS There are three connectors associated w ith the g raphics su bsy stem ; tw o display /m onitor connectors and the Feature con nector. NOTE: T he graphic card’s edg e connector m ates w ith the AGP sl ot connector on th e sy stem board.
Appendix H Compaq/Matrox Millennium G450 AGP Graphics C ard Compaq Pers onal Computer s Original - Novem ber 2000 H-6 H.6.2 VIDE O FE ATURE CONNECTOR The Video Feature connector allow s a video peripheral such as a TV tuner card to provide v ideo input to the g raphics card.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 I-1 A ppendix I COMPA Q/INTEL NETWORK INTERFA CE CONTROLLER ADA PTERS I. Appendix I Compaq/Intel Network Interface Controller Ad a p t e r s I.
Appendix I Compaq/Int el Netw ork Inter face Contr oller Adapt ers Compaq Pers onal Computer s Original - D ecember 2000 I-2 I.2 FUNCTIONA L DESCRIPTION The Intel PR O/100+ and t he PRO /100 S Manag e.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 I-3 I.2.1 A OL FUNCTION The adapter’s Alert-On- LAN (A OL) fu nction provides a AOL- compliant sy stem unit w ith th e ability to comm un icate system status to a managem ent con sole, even w hile the sy stem is powered dow n.
Appendix I Compaq/Int el Netw ork Inter face Contr oller Adapt ers Compaq Pers onal Computer s Original - D ecember 2000 I-4 I.2.3 IPSEC FUNCTION The 82550 controlle r used on the Int el PRO/ 100 S Ma.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 I-5 I.3 PO W ER MA NA GEMENT SUPPORT These adapters s upport A PM and AC PI pow er ma nagem en t env ironm ents as w ell as the Wired- for-Man agem ent (WfM) and Wak e-On -LA N (WOL) s tandards.
Appendix I Compaq/Int el Netw ork Inter face Contr oller Adapt ers Compaq Pers onal Computer s Original - D ecember 2000 I-6 I.4 A DA PTER PROGRA MMING Pr o gramming the ad apt e r co nsists o f c o nfigura tion, which occur s duri ng POST , a nd co ntro l , which occurs at run time.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 I-7 I.5 NETWORK CONNECTOR Figure I-3 s how s the R J-45 connector u sed for the NIC interface. This con nector inclu des the tw o status L EDs as part of the conn ector assem bly.
Appendix I Compaq/Int el Netw ork Inter face Contr oller Adapt ers Compaq Pers onal Computer s Original - D ecember 2000 I-8 This page is intentionally blank.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 J-1 A ppendix J COMPA Q/NVIDIA QUA DRO2 MXR A GP GRA PHICS CA RD J. A ppendix J Compaq/NVIDIA Quadro2 MXR A GP Graphics Card J.
Appendix J Compaq/N VIDIA Quadro2 M XR AGP Graphics Card Compaq Pers onal Computer s Original - D ecember 2000 J-2 J.2 FUNCTIONA L DES CRIPTION The NVIDIA Q uadro2 MXR Graph ics C ard provides h igh perform ance 2D and 3D displ ay imag ing.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 J-3 J.3 DISPLA Y MODES The 2D graphi cs display modes support ed by the NVIDIA Qu adro2 MXR Graphi cs are lis ted in Table J-1. Table J-1. NVIDIA Quadro2 MXR Graphics Display Modes Table J- 1.
Appendix J Compaq/N VIDIA Quadro2 M XR AGP Graphics Card Compaq Pers onal Computer s Original - D ecember 2000 J-4 J.4 SOFTWA RE SUPPOR T INFORMA TION The NVIDIA Quadro2 MXR graphics card is fully compatible w ith softw are w ritten f or legacy video m odes (VG A, EGA , CGA ) and n eeds no driv er support for th ose m odes.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 J-5 J.6 CONNECTORS There are two con nectors ass ociated with the graph ics subs ys tem; the display /m onitor connector and the Feature con nector. NOTE: T he graphic card’s edg e connector m ates w ith the AGP sl ot connector on th e sy stem board.
Appendix J Compaq/N VIDIA Quadro2 M XR AGP Graphics Card Compaq Pers onal Computer s Original - D ecember 2000 J-6 This page is intentionally blank..
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 K- 1 A ppendix K COMPA Q PCI 10/100 ETHERNET A DA PTER K. A ppendix K Compaq PCI 10/100 Ethernet Adapter K.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 K-2 WO L Conn. TX/R X WO L GND 5 VDC Aux 3.3 VDC 1 2 3 4 SMB Da ta SMB CS- SMBus Conn. SMB Clo ck NC 1 Event 1 AOL/SOS Conn. 2 3 4 5 6 7 Event 2 Event 3 Event 4 Event 5 Event 6 MD Clock (SOS P resent) K.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 K- 3 K.2.1 A OL FUNCTION The adapter’s Alert-On- LAN (A OL) fu nction provides a AOL- compliant sy stem unit w ith th e ability to comm un icate system status to a managem ent con sole, even w hile the sy stem is powered dow n.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 K-4 K.2.2 RSA FUNCTION This adapter prov ides su pport for sy stems u sing the R em ote Sy stem A lert (RS A) m eth od of generating alerts over th e netw ork.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 K- 5 K.3 POW ER MA NA GEMENT SUPPORT These adapters s upport A PM and AC PI pow er ma nagem en t env ironm ents as w ell as the Wired- for-Man agem ent (WfM) and Wak e-On -LA N (WOL) s tandards.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 K-6 K.4 CONNECTORS In addition to the PCI card edge connector, the NIC adapter includes four on- board connectors; the RJ-45 netw ork connector, an AO L/SOS conn ector, a WOL conn ector, and a SMBus con nector.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 K- 7 K.4.3 SMBUS CONNECTOR Figure K-5 s how s th e SMBus connector. This connector is u sed for sy stem s em ploy ing AOL functionality and requiring a cable connection for SMBus activity .
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 K-8 K.5 A DAPTER SPECIFICA TION S Table K- 1. Adapter Specifications Table K- 1.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 L-1 A ppendix L COMPA Q/A DA PTEC 29160N SCSI HOST A DA PTER L. A ppendix L Compaq/A daptec SCSI Host A dapter L.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 L-2 L.2 FUNCTIONA L DESCRIPTION A block diag ram of the SCSI A dapter is show n in Figure L- 2. The adapter’s architectu re is based on th e AIC -7892 SC SI cont roller w orki ng off t he 32- bit, 66- /33-MHz PC I bus.
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 L-3 L.3 SCSI AD A PTER PROGR A MM ING L.3.1 SCSI AD A PTER CONFIGURA TION The Adaptec SCSI Host A dapter Card is a PCI dev ice and conf igu red using PCI protocol and PCI Config uration Space reg isters (PCI addres ses 00h- FFh) as dis cussed in Chapter 4 of this g uide.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 L-4 L.5 SCSI CONNE CTORS This SC SI card provides tw o inte rnal h eader-ty pe conn ectors (one 50-pin , one 68-pi n) and on e external D- type con nector (50-pin ).
Technical Reference Guide Compaq Personal Computers Original - D ecember 2000 L-5 L.5.2 INTERNAL 50-PIN ULTRA SCSI CONNECTOR The card provides one in ternal 50-pin header-ty pe Ultra SCSI con nector.
Appendix K Compaq PC I 10/100 Ether net Adapter Compaq Pers onal Computer s Original - D ecember 2000 L-6 L.5.3 INTERNA L 68-PIN ULTRA 160 SCSI CONNECTOR The card provides on e intern al 68-pi n Ultra160 S CSI con nector.
INDEX I. 3D eff ects, D- 2, E-2, G- 2, H-2, J- 2 abbreviations, 1-3 AC 97 link bus , 5-29 Accelerated Graphi cs Port (AGP), 4-10 ACPI, I-5, K- 5 acrony m s, 1-3 AGP, 4- 10 Aler t-O n-LAN, 5 -3 3 AOL ,.
I/O controller, 4-38 graphics card, D-1, E- 1, F-1, G-1 , H-1 , J-1, K-1, L-1 graphi cs su bsy stem , 2- 13 graphics , 3D, D-2, E- 2, G-2 , H-2 , J -2 Hard drive activity in dicator, 4-39 Hub li nk bu.
security , interf ace, 4-32 sens or, therm al, 4- 34 serial interf ace, 2-12, 5-8 SGRAM, D-2, J-2 sideband addres sin g, 4-11 sig nal dis tribu tion, 6-7, 6-8 SMBIOS, 7- 16 SMI, 4-18 Soun d Blaster 12.
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Een belangrijk punt na aankoop van elk apparaat Compaq 850 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
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In een situatie waarin je al een beziter van Compaq 850 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Compaq 850 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Compaq 850 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.