HP VECTRA XW Product manual

Technical Reference Manual
Hardware and BIOS
HP Vectra XW

Notice
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this
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All rights are reserved. No part of this document may be photocopied,
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Microsoft®, Windows® and MS-DOS® are registered trademarks of the
Microsoft Corporation.
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OS/2TM is a trademark of International Business Machines Corporation.
NextStepTM is a trademark of Next Incorporated.
PentiumTM is a trademark of Intel Corporation.
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Hewlett-Packard France
Grenoble Personal Computer Division
Technical Marketing
38053 Grenoble Cedex 9
France
1996 Hewlett-Packard Company

iii
Preface
This manual is a technical reference and BIOS document for engineers and
technicians providing system level support. It is assumed that the reader
possesses a detailed understanding of AT-compatible microprocessor
functions and digital addressing techniques.
Technical information that is readily available from other sources, such as
manufacturer’s proprietary publications, has not been reproduced.
This manual contains summary information only. For additional reference
material, refer to the bibliography, on the next page.
Conventions
The following conventions are used throughout this manual to identify
specific numeric elements:
❒Hexadecimal numbers are identified by a lower case h.
For example, 0FFFFFFFh or 32F5h
❒Binary numbers and bit patterns are identified by a lower case b.
For example, 1101b or 10011011b

iv
Bibliography
❒HP Vectra XW User’s Guide manual (D4514-90001).
❒HP Vectra XW Familiarization Guide (D4514-90901).
❒HP Network Administrator’s Guide (online).
❒HP Vectra Accessories Service Handbook - 6th edition
(5964-8495).
❒HP Vectra PC Service Handbook (Volume 1) - 11th edition
(to be announced).
❒XW/XU Drivers and Documentation CD-ROM (5011-3816).
❒HP Support Assistant CD-ROM (by subscription).
The following Intel®publication provides more detailed information:
❒Pentium Pro Family Developer’s Manual, Volume 1: Specifications,
Intel, 1996, ISBN 1-55512-259-0
❒Pentium Pro Family Developer’s Manual, Volume 2: Programmer’s
reference manual, Intel, 1996, ISBN 1-55512-260-4
❒Pentium Pro Family Developer’s Manual, Volume 3: Operating
System Writer’s Manual, Intel, 1996, ISBN 1-55512-261-2

Contents
v
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Bibliography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
1 System Overview
Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications and Characteristic Data . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Environmental Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Where to Find the Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 System Board
System Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Architectural View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Devices on the Processor-Local Bus . . . . . . . . . . . . . . . . . . . . . . . . . 10
Intel Pentium Pro (P6) Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chip-Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cache Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Optional Second Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Main Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Devices on the PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Small Computer System Interface (SCSI) . . . . . . . . . . . . . . . . . . . . . . . . 14
Integrated Drive Electronics (IDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Contents
vi
Devices on the ISA Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ultra I/O Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Audio Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Little Ben . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Other PCI and ISA Accessory Devices under Plug and Play . . . . . . . . . 20
3 Interface Boards and Mass-Storage Drives
HP Integrated OpenGL Interface Board . . . . . . . . . . . . . . . . . . . . . . . 22
Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Start Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Video Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Available Video Resolutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
HP PCI Integrated 10/100 BT Interface Board . . . . . . . . . . . . . . . . . . 25
Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Configuring the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Further Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Mass-Storage Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hard Disk Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Flexible Disk Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
CD-ROM Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Connectors and Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4HPBIOS
Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
BIOS Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
System Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Contents
vii
HP I/O Port Map (I/O Addresses Used by the System). . . . . . . . . . . . . . 38
5 Power-On Self-Test and Error Messages
Order in Which the Tests are Performed . . . . . . . . . . . . . . . . . . . . . . 44
Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Suggestions for Corrective Action . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Lights on the Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Error Message Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Contents
viii

1
1
System Overview
This manual describes the HP Vectra XW, and provides detailed system
specifications.
This chapter introduces the external features, and lists the specifications
and characteristic data of the system. It also summarizes the documentation
which is available.

2
1 System Overview
Package
Package
Status Panel The status panel has the following features:
❒a power on/off button with integrated on/error status light
❒a press-and-hold RESET button
❒a hard disk activity light.
IDE 8✕CD-ROM
Headphones
Power on/off button
Disk activity light
Volume control
Microphone

3
1 System Overview
Specifications and Characteristic Data
Specifications and Characteristic Data
Physical Characteristics
System Processing Unit
Weight 33 lbs 15 kg
Dimensions 16.0 inches (D) by 8.3 inches (W) by 16.3 inches (H) 405 mm (D) by 210 mm (W) by 415 mm (H)
Footprint 0.92 sq ft 0.085 m2
Keyboard
Flat 18.3 inches (W) by 7 inches (D) by 1.3 inches (H) 464 mm (W) by 178 mm (D) by 33 mm (H)
Standing 18.3 inches (W) by 7 inches (D) by 2 inches (H) 464 mm (W) by 178 mm (D) by 51 mm (H)
3-button mouse
HP PCI Integrated
10/100 BT Interface
Stereo-in
Stereo-out
MIDI
Parallel port
External SCSI
Keyboard
Display connector for
3D AccelGraphics board
(Line-in)
(Line-out)

4
1 System Overview
Specifications and Characteristic Data
Electrical Specification
When the computer is turned off, but left plugged in at the mains, the power
consumption falls below 3 watts, but is not zero. As well as supplying power
to the real time clock, a small trickle current is also leaked that considerably
extends the lifetime of the power supply.
If the computer is completely unplugged from the mains, the real time clock
continues to operate, from the charge stored in the gold capacitor, for over a
week. The gold capacitor can be recharged by plugging the computer back
in for at least an hour (it is not necessary to start the computer).
An attempt to draw too much current (such as a short circuit across edge-
connector pins, or an accessory board that is not suitable for this computer),
will cause the overload protection in the power supply to be triggered, and
the computer could fail to boot.
Parameter Limit for the Power
Supply Notes Limit per PCI
Accessory Slot
Limit per ISA
Accessory Slot
Input voltage 100-127
Vac
200-240
Vac
Switch
selectable
Input current (max) 6 A 3.15 A
Input power (max) 280 W
Input power (typical) < 44 W
< 29 W
< 24 W
< 3 W
Fully-on mode
Standby mode
Suspend mode
Off (but
plugged)
— —
Input frequency 47 Hz to 63 Hz
Heat dissipation 280 W
Available power 200 W (max)
160 W (continuous)
15 W (max) 15 W (max)
Max current at +12 V 3.5 A —0.2 A 0.2 A
Max current at -12 V 0.4 A —0.2 A 0.5 A
Max current at +3.3 V 9 A Together,
these must not
exceed 145 W
These must not
exceed 2.5 A per
slot
—
Max current at +5V 12 A 1 A
Max current at -5V 0.2 A ——
0.2 A
Max current at +5Vst 70 mA —— —

5
1 System Overview
Documentation
Environmental Specification
Operating temperature and humidity ranges may vary depending upon the
mass storage devices installed. High humidity levels can cause improper
operation of disk drives. Low humidity levels can aggravate static electricity
problems and cause excessive wear of the disk surface.
Documentation
The table below summarizes the documentation for the HP Vectra XW. Only
selected publications are available on paper. Most are available as printable
files from the HP division support servers, and as viewable files (which can
also be printed) on the HP Support Assistant CD-ROM.
System Processing Unit with a Hard Disk
Typical power consumption 30 W to 40 W (before installing any customer-specific accessories)
Acoustic noise emission less than 40 dB in the workplace under normal conditions as
defined by DIN 45635 T.19 and ISO 7779
Operating temperature + 40°F to +104° F +5°C to +40°C
Recommended operating temperature +59°F to +104°F +15°C to +40°C
Storage temperature -40°F to +158°F -40°C to +70°C
Over temperature shutdown +122°F +50°C
Operating humidity 15% to 80% RH (non-condensing)
Storage humidity 8% to 80% RH (non-condensing)
Operating altitude 10000 ft max 3100 m max
Storage altitude 15000 ft max 4600 m max
Title Division
Support Server
Support Assistant
CD-ROM Paper-based
HP Vectra XW User’s Guide printable PCL file printable/viewable file
D4514A
Guide to Optimizing Performance printable PCL file printable/viewable file
HP Vectra XW Familiarization Guide printable PCL file printable/viewable file D4514-90901
HP Vectra XW Technical Reference Manual: Hardware and BIOS printable PCL file printable/viewable file no
HP Vectra PC Service Handbook (11th Edition) printable PCL file printable/viewable file to be announced
HP Vectra Accessory Service Handbook (6th Edition) printable PCL file printable/viewable file 5964-8495
Network Administrators Guide WinHelp file printable/viewable file no
Installing Windows NT 3.51 WS printable PCL file printable/viewable file D4514-90931

6
1 System Overview
Documentation
Where to Find the Information
The following table summarizes the availability of information within the
HP Vectra XW documentation set.
User Guide User Online Familiarization
Guide
Service
Handbook
Technical
Reference Manual
Introducing the computer
Product features Key features Using New features Exploded view
Parts list
Key features
Product model numbers Product range
CPL dates
Using the computer
Connecting cables and
turning on
Keyboard, mouse,
display, network,
printer, power
Finding on-line
information
Finding READ.MEs and
on-line documentation
Environmental Setting up the computer Working in comfort System overview
Formal documents Software license
Hardware warranty
License agreement
Upgrading the computer
Opening the computer Full details
Supported accessories Part number details Full product
number details
Replacing accessories How to install New procedures
Configuring devices Installing drivers Configuring
peripherals
Problem fixes
Fields and their options
within Setup
Complete list Key fields
Repairing the computer
Troubleshooting Basic New symptoms Service notes Advanced
Technical information Basic Detailed Advanced
System board Jumpers, switches and
connectors
Jumpers,switches
and connectors
How to replace
Jumpers,
switches and
connectors
Jumpers, switches
and connectors
Chip-set details
BIOS Basic details Upgrading Technical details
Memory maps
Power-On Self-Test
routines (POST)
Key error codes and
suggestions for
corrective action
Order of tests
Complete list

7
2
System Board
The next chapter describes the graphics, disk, audio and network devices
which are supplied with the computer.
This chapter describes the components of the system board, taking in turn
the components of the Processor-Local Bus, the Peripheral Component
Interconnect (PCI) bus and the Industry Standard Architecture (ISA) bus.

8
2 System Board
System Board
System Board
Architectural View
The following block diagram gives an architectural view (for frequencies,
see the table on page 11).

9
2 System Board
System Board
Front-side bus Back-side bus
(128 bit, 200 MHz) Memory bus (72 bit, async)
Processor-Local bus (64 bit, 66 MHz)
Boards in accessory slots
PCI bus (32 bit, 33 MHz)
ISA bus (16 bit, 8.33 MHz)
18 bit 18 bit 18 bit 18 bit
Memory modules
D1
C1
B1
A1
D2
C2
B2
A2
BIU
L1
I-cache L1
D-cache
P6
Core
L2
Cache
1234
Mem/PL bridge
PL/PCI
bridge
PCI/ISA
bridge Ultra I/O
controller
Fast-20
SCSI-2 IDE
master
Little Ben
ASIC Audio
controller
Graphics
controller Network
controller
System
ROM

10
2 System Board
Devices on the Processor-Local Bus
Devices on the Processor-Local Bus
Intel Pentium Pro (P6) Microprocessor
Each processor is packaged in a 387-way pin-grid-array (PGA), which is
seated on the system board in a P6T overdrive zero-insertion-force (ZIF)
socket 8. The computer has two such sockets: the top one is occupied by a
Pentium Pro (P6 or P6S) processor on all models; the bottom one is empty
on some models, and can be filled with an optional second Pentium Pro
processor. Only upgrades, pin compatible with the original processor,
manufactured by Intel, are supported.
Every processor that is installed, or replaced, must be accompanied by the
voltage regulator module (VRM) that was supplied with it. Each VRM is
specific to the processor with which it was supplied, and should only be
used with that processor. The voltage is selected automatically by the
processor: it supplies four logic signals that specify a voltage between 2.0 V
to 3.5 V in steps of 0.1 V. For instance, the 200 MHz version requires 3.3 V.
Bus Frequencies There is a 14.318 MHz crystal oscillator on the system board. This frequency
is multiplied to 60 or 66 MHz by a phase locked loop. This is further scaled by
an internal clock multiplier within the processor. For example, the
Pentium Pro 200 MHz processor multiplies the 66 MHz system clock by three.
Switches 4 and 5 on the system board switch bank set the frequency of the
Processor-Local bus. Switches 6, 7 and 8 set the clock multiplier ratio. The
relationship of the switch settings to Processor-Local bus and processor
frequencies is summarized in the following table:
1. Only 200 MHz Pentium Pro processors are supplied. This information is provided for
completeness only.
Switch Processor
Local Bus
Frequency
PCI Bus
Frequency
ISA Bus
Frequency
Switch Frequency
Ratio
Processor
: Local Bus
Processor
Frequency
4 5 6 7 8
Off Off 66 MHz 33 MHz 8.33 MHz Off Off Off 2 : 1 133 MHz1
On Off 60 MHz 30 MHz 7.5 MHz On Off Off 2.5 : 1 150 MHz1
Off Off 66 MHz 33 MHz 8.33 MHz On Off Off 2.5 : 1 166 MHz1
On Off 60 MHz 30 MHz 7.5 MHz Off On Off 3 : 1 180 MHz1
Off Off 66 MHz 33 MHz 8.33 MHz Off On Off 3 : 1 200 MHz

11
2 System Board
Devices on the Processor-Local Bus
Chip-Set
The Intel 82450KX chip-set comprises eight chips. Six of them are
concerned with controlling memory accesses, and are located below the
memory module sockets. These are the four datapath units, the memory
controller chip, and the Mem/PL bridge chip. They are described in the sub-
section of this chapter entitled “Main Memory”.
The remaining two chips are the PL/PCI bridge chip (OPB, Intel S82454KX),
and the PCI/ISA bridge chip (system I/O chip, SIO-A, Intel S82379AB).
The Processor-Local bus is 64 bits wide, and is clocked at 66 MHz. Although
carrying 64-bits of data, it is in fact composed of 141 signals. These are
implemented using GTL+ (Intel’s adaptation of Gunning Transceiver Logic).
To reduce voltage over- and under-shoots, the signals are clamped to a 0 to
1.5 voltage range, and are filtered to prevent the logic edges from becoming
too steep (that is, there is a minimum constraint on the rise and fall times, as
well as the usual maximum constraint).
Cache Memory
There are two integrated circuits sealed within a single Pentium Pro
package. One of these contains the Level-2 (L2) cache memory chip; the
other contains the processor chip, which itself includes two banks of Level-1
(L1) cache memory.
The amount of cache memory is set by Intel at the time of manufacture, so
cannot be changed. Each L1 cache memory has a capacity of 8 KB, and is
set-associative (4-way for the I-cache, and dual-ported 2-way set associative
for the D-cache). The L2 cache memory has a capacity 256 KB or 512 KB,
depending on the part number of the processor, and is composed of four-
way set-associative static RAM.
Data is stored in lines of 32-bytes (256 bits). Thus two consecutive 128-bit
transfers with the main memory are involved for each transaction.
Optional Second Microprocessor
The two processors must be operating at the same bus speed and the same
processor speed, with the switch settings set accordingly for the slower of
the two. In fact, only 200 MHz processors are presently supported by HP.
The two processors should have the same amount of level-two (L2) cache
memory. Although a mixed configuration would work, it would not give
optimum performance.

12
2 System Board
Devices on the Processor-Local Bus
Main Memory
There are eight main memory module sockets, arranged in four banks
(A to D). One or two banks are already occupied by the double interline
memory modules (DIMMs) that contain the 64 MB or 128 MB of memory
that is supplied with the computer (depending on the model).
The modules are organized in pairs so that a request for a transaction to or
from the L2 cache memory will cause two consecutive blocks of 16 bytes
(128 bits) to be accessed. Rather than accessing all 128 bits simultaneously,
the 64-bit data bus is used more efficiently by interleaving two accesses,
the first to one half of the memory bank (for example, A1/B1/C1/D1), the
second to the other (for example, A2/B2/C2/D2).
Error Correcting Code Operation
If single bit errors occur in any of the 72-bit lines of memory, each line is
corrected (automatically and transparently) by the Mem/PL Bridge chip. If
any double bit error occurs, it causes an NMI to be generated, and the
computer to be halted.
If more than two bits are faulty within any given 72-bit line, the effect is the
same as it would have been without error correction. The effect of executing
a faulty instruction is always unpredictable, and might cause the program to
‘hang’. The effect of reading a faulty data word is often similarly
unpredictable, but can sometimes be tolerated (for instance, it might merely
appear as a corrupted pixel on a video display).
Upgrading Memory
The memory modules that are supplied with the computer can be a pair of
modules of type “interleave 16” or a pair of type “interleave 64”. Either
memory can be replaced or extended with memory modules of the either
type (but not with memory of type “interleave 8” or “interleave 32”).
The banks can be filled in any order, but always in pairs of memory modules
of the same capacity and same type (ECC or non-ECC), and with bank-A
always occupied. The computer uses fast page-mode (FPM) DRAM (not
extended data-out, EDO). It makes use of 72-bit ECC memory, but even
this will be disabled if any 64-bit non-ECC memory is installed in any bank.
The Setup program automatically detects which memory module capacity,
speed, and type (ECC or non-ECC) is installed in each bank.