Hp 520 5 Xx Users Manual

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HP Vectra 500 Series PC

Models:

520 5/xx
525 5/xx

Hardware and BIOS
Technical Reference Manual

September 1996

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
material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose.
Hewlett-Packard shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
This document contains proprietary information that is protected by
copyright. All rights are reserved. No part of this document may be
photocopied, reproduced, or translated to another language without the
prior written consent of Hewlett-Packard Company.
CompuServe is a U.S. trademark of CompuServe, Inc.
Intel is a trademark of Intel Corporation.
Microsoft, MS-DOS and Windows are U.S. registered trademarks
of Microsoft Corporation.
Pentium is a U.S. registered trademark of Intel Corporation.
UNIX is a registered trademark in the United States and other
countries, licensed exclusively through X/Open Company Limited.

Hewlett-Packard France
Grenoble Personal Computer Division
Technical Marketing
38053 Grenoble Cedex 9
France

 1996 Hewlett-Packard Company

Preface
This manual is a technical reference and BIOS document for engineers and
technicians providing system level support for HP Vectra 500 Series PCs for
models 520 5/xx and 525 5/xx.
It is assumed that the reader possesses a detailed understanding of ATcompatible microprocessor functions and digital addressing techniques.
Technical information that is readily available from other sources, such as
manufacturers’ proprietary publications, has not been reproduced.
This manual contains summary BIOS information only. For detailed
information, it is recommended to read the reference work cited in the next
section. For additional reference material, refer to the bibliography.

Ordering the Phoenix BIOS Manual
System BIOS for IBM PCs, Compatibles, and EISA Computers (ISBN 0-20157760-7) by Phoenix Technologies is available in many bookstores. It can also
be ordered directly from the publisher as follows:
In the U.S.A.
Call Addison-Wesley in Massachusetts at +1-617-944-3700, and be prepared to
give a credit card number and expiry date.
In Europe
Send your request to Addison-Wesley at the address given below, and be
prepared to give a credit card number and expiry date.
Addison-Wesley
Concertgebouwplein 25
1071 LM Amsterdam, The Netherlands
Tel: +31 (20) 671 72 96
Fax: +31 (20) 675 21 41

3

Conventions
The following conventions are used throughout this manual to identify specific
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

Bibliography
❒ System BIOS for IBM PCs, Compatibles, and EISA Computers
(ISBN 0-201-57760-7) by Phoenix Technologies. Addison-Wesley
(publisher).
The following Hewlett-Packard publications may also assist the reader
of this manual:
❒ HP Vectra 500 Series Service Handbook - 3rd edition.
HP Part Number: 5964-8385-EN.
❒ HP Vectra 500 Series Familiarization Guide.
HP Part Number: 5964-8384-EN.
❒ Online Acrobat Reader documents for either the desktop or minitower
packages. These books are:
Upgrade Guide - explaining how to upgrade and install memory, mass
storage devices, expansion cards, and upgrade (overdrive) processors.
Advanced Setup Guide - information about system configurations and
characteristics, using the HP Setup program and communications
options.
Note: These online documents are customized for a particular platform,
depending on the system board, desktop or minitower package, and
communications options.
The following Intel publication provides more detailed information:
❒ Pentium Processor (241595-002)

4

Contents

1 HP Vectra 500 Series
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
D4051-63001 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
D4051-63001- Desktop Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
D4051-63001 - Minitower Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
D3657-63001 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
D3657-63001 - Desktop Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
D3657-63001 - Minitower Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
D3661-63001 Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
D3661-63001 - Minitower Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
System Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Comparison of HP Vectra 500 Series
Desktop and Minitower Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Principal Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Physical and Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . 21
Power Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Typical Power Consumption/Availability for ISA Expansion Card Slots .23
Typical Power Consumption/Availability for PCI Expansion Card Slots .23
Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

CD-ROM Drive Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

English 5

2 System Board - (SiS Chipset)
(Part Number: D4051-63001)
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29

System Board Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30

System Board Physical Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

SiS Chipset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

Host/PCI Bridge (SiS 5511 Chip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Feature Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Data Path (SiS 5512 Chip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PCI/ISA Bridge (SiS 5513 Chip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
ISA Bus Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
DMA Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Interrupt Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Timer/Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
System Board Switches and Jumpers (D4051-63001) . . . . . . . . . . . . . . 38
SW1 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
SW2 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
CPU Bus Frequency Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cache Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Space-Bar Power-On Feature Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Processor Socket (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Memory Sockets (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Backplane (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42

Desktop Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minitower Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42
43

6 English

Devices on the Processor Local Bus (D4051-63001). . . . . . . . . . . . . 44
Main Memory (UMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Cache Memory (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Level-1 Cache Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Level-2 Cache Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Pentium Processor (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Superscalar Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Floating Point Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Dynamic Branch Prediction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Instruction and Data Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Data Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Advanced Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Devices on the PCI Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Graphics/Integrated Video (D4051-63001) . . . . . . . . . . . . . . . . . . . . . . . 48
Video Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Integrated Drive Electronics (IDE) Controller . . . . . . . . . . . . . . . . . . . . 49
Transfer Rates Versus Modes of Operation. . . . . . . . . . . . . . . . . . . . . . . .50
Disk Capacity Versus Modes of Addressing . . . . . . . . . . . . . . . . . . . . . . .51

Devices on the ISA Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Super I/O Chip (NS 87308 or NS 87307) . . . . . . . . . . . . . . . . . . . . . . . . . 52
Serial/Parallel Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Floppy Drive Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Keyboard and Mouse Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

BIOS (version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
HP Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Little Ben . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

56
56
56

English 7

3 System Board
(P/Ns D3657-63001 and D3661-63001)
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

58

D3657-63001 Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Desktop Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Minitower Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
D3661-63001 Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Minitower Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

System Board Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

60

System Board Physical Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

61

Principal Components and Features . . . . . . . . . . . . . . . . . . . . . . . . .

62

PCI Chipset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
PCI, Cache and Memory Controller (SB82437FX-66) . . . . . . . . . . . . . . 63
SB82437FX-66 Feature Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Data Path Unit (SB82438FX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
The PCI/ISA Bridge and IDE Controller (SB82371FB). . . . . . . . . . . . . . 65
The SB82438FX and SB82371FB Feature Summary . . . . . . . . . . . . . . . 65
System Board Configuration Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Processor Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
VRM Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Main Memory Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Advanced Power Management (APM). . . . . . . . . . . . . . . . . . . . . . . . . . . 68
HP Vectra 500 Series Desktop Backplane . . . . . . . . . . . . . . . . . . . . . . . . 68
HP Vectra 500 Series Minitower Backplane. . . . . . . . . . . . . . . . . . . . . . . 69

Devices on the Processor Local Bus . . . . . . . . . . . . . . . . . . . . . . . . .

70

Pentium Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

70

8 English

Superscalar Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Floating Point Unit (FPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Dynamic Branch Prediction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Instruction and Data Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Data Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Bus Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Cache Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Main Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Devices on the PCI Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Video Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
S3 Trio 64PnP Video Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Video DRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Video Resolutions Supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Integrated Drive Electronics (IDE) Controller . . . . . . . . . . . . . . . . . . . . 76
Other PCI Accessory Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Devices on the ISA Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Super I/O Chip (SMC FDC37C932). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Serial/Parallel Communications Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Floppy Drive Controller (FDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Keyboard and Mouse Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Real-Time Clock (RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Serial EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
System ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Other ISA Accessory Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

English 9

4 Summary of the HP/Phoenix BIOS
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

82

HP/Phoenix BIOS Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

82

Updating the System ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Error Diagnostics and Suggested Corrective Actions . . . . . . . . . . . . . . . 83
Little Ben . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

HP/Phoenix BIOS (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . .

85

Setup Program (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . 85
Main Menu (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Configuration Menu (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . 86
Security Menu (BIOS version: GX.07.xx). . . . . . . . . . . . . . . . . . . . . . . . . 87
Power Menu (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Summary Configuration Screen (BIOS version: GX.07.xx). . . . . . . . . . . 88
I/O Addresses Used by the System (BIOS version: GX.07.xx) . . . . . . . . 90
System Memory Map (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . 90
BIOS I/O Port Map (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . 91
System Board Components (BIOS version: GX.07.xx) . . . . . . . . . . . . . . 92
DMA Channel Controllers (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . 92
Interrupt Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
PCI Interrupt Request Lines (BIOS version: GX.07.xx) . . . . . . . . . . . . . 94
Power-On Self-Test (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . 94
Error Messages (BIOS version: GX.07.xx) . . . . . . . . . . . . . . . . . . . . . . . 97
Beep Codes (BIOS version: GX.07.xx). . . . . . . . . . . . . . . . . . . . . . . . . . . 99

HP/Phoenix BIOS (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . .

100

Setup Program (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . 100
Main Menu (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Preferences Menu (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . 101
Configuration Menu (BIOS version: GJ.07.xx). . . . . . . . . . . . . . . . . . . . 101

10 English

Security Menu (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . .102
Power Menu (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . .102
Summary Configuration Screen (BIOS version: GJ.07.xx) . . . . . . . . . .103
I/O Addresses Used by the System (BIOS version: GJ.07.xx) . . . . . . . . 104
System Memory Map (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . 104
BIOS I/O Port Map (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . 105
Addressing System Board Components
(BIOS version: GJ.07.xx). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
DMA Channel Controllers (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . .106
Interrupt Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
PCI Interrupt Request Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Power-On Self-Test (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . 109
Shadow Ram (BIOS version: GJ.07.xx). . . . . . . . . . . . . . . . . . . . . . . . . .109
Error Messages (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . 113
Beep Codes (BIOS version: GJ.07.xx) . . . . . . . . . . . . . . . . . . . . . . . . . . 114

5 Video Controllers
SiS 6205 Video Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
SiS 6205 Video Controller Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Upgrading Video Memory (UMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Using the HP Dynamic Video Feature . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Typical Windows 95 Video Resolutions (SiS 6205 Chip) . . . . . . . . . . . .118
VESA Feature Connector (SiS 6205 Chip). . . . . . . . . . . . . . . . . . . . . . . 119

The Integrated Ultra VGA Video Controller . . . . . . . . . . . . . . . . . . . 120
S3 Trio 64 Video Controller Summary . . . . . . . . . . . . . . . . . . . . . . . . . .
S3 Trio 64 Video Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S3 Trio 64 Video Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Windows 95 Video Resolutions (S3 Trio 64) . . . . . . . . . . . . . . .
VESA Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

120
121
121
125
126

English 11

Matrox MGA Millennium Video Controller Card . . . . . . . . . . . . . .

127

MGA Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MGA Video Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Available MGA Video Resolutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MGA Video BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Information About MGA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

128
128
129
131
131

DB15 Connector Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

132

6 Aztech AT3300
Audio Fax/Data Modem
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

134

Communications Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

135

European Firmware and Telephone Line Configuration. . . . . . . .

137

Configuring the firmware code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Aztech AT3300 Localisation Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Using the HyperTerminal Application . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

12 English

1

HP Vectra 500 Series
This chapter provides a description of the HP Vectra 500 Series desktop
(Models 520 5/xx) and minitower (Models 525 5/xx) computers with
detailed system specifications. The HP Vectra 500 Series computers are
Pentium processor-based, constructed around the Peripheral Component
Interconnect (PCI) bus and Industry Standard Architecture (ISA) bus.

13

1 HP Vectra 500 Series
Introduction

Introduction
Three group types have been defined to help identify the various system
configurations available on the HP 500 Series desktop and minitower
packages. Within each group, a product number and the appropriate HP
Vectra 500 Series model have been associated with the HP Service Part
Number.
The HP Service Part Numbers are:
• D4051-63001
• D3657-63001
• D3661-63001
An HP Service Part Number group contains details of a specific system
configuration. For example, if there is a need to perform a check on a
certain product number, first determine which group type it belongs to, then
refer to System Features, on page 17, for a list of main features.

14

1 HP Vectra 500 Series
System Overview

System Overview
D4051-63001 Models
The HP Service Part Number D4051-63001 group contains HP Vectra 500
Series models that have the following features: Unified Memory
Architecture (UMA), main memory upgradable to 192 MB, and the SiS
(Silicon Integrated System) 6205 video graphic controller.

D4051-63001- Desktop Models
The following table shows the models and their associated product numbers.
Model

Product Number

520 5/133

D4402A

D4403A

D4404A

D4434A

520 CD1 5/133

D4413A

D4414A

D4437A

D4460A

520 MCx2 5/120

D4420A

D4428A

2

520 MCx 5/133
520 MCx2 5/166

D4440A

D4442A

D4443A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

D4051-63001 - Minitower Models
The following table shows the models and their associated product numbers.
Model

Product Number

525 5/133

D4454A

525 CD1 5/166

D4422A

D4423A

D4424A

525 MCx 5/133

D4416A

D4418A

D4419A

525 MCx2 5/166

D4426A

D4427A

D4439A

2

D4425A

D4441A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

15

1 HP Vectra 500 Series
System Overview

D3657-63001 Models
The HP Service Part Number D3657-63001 group contains HP Vectra 500
Series models that have the following features: separate main memory and
video memory, and an integrated 32/64 Ultra VGA video graphic controller.

D3657-63001 - Desktop Models
The following table shows the models and their associated product numbers.
Model

Product Number

520 MCx2 5/133

D4479A

520 MCx2 5/166

D4480A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

D3657-63001 - Minitower Models
The following table shows the models and their associated product numbers.
Model

Product Number

525 5/166

D4483A

525 5/200

D4474A

525 CD1 5/133

D4475A

525 CD1 5/166

D4476A

525 CD1 5/200

D4470A

525 MCx2 5/133

D4477A

525 MCx2 5/166

D4478A

2

525 MCx 5/200
1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

16

D4473A

D4472A

D4481A

D4482A

1 HP Vectra 500 Series
System Overview

D3661-63001 Model
The HP Service Part Number D3661-63001 group contains one HP Vectra
500 Series model that has the following features: separate main memory and
a Matrox MGA millennium video card.

D3661-63001 - Minitower Model
The following table shows the model and its associated product number.
Model

Product Number

525 MCx2 5/200

D4471A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

System Features
The following table shows the main features available on the various HP
Vectra 500 Series PC models. The table definitions are:
Shading

Description
Indicates that the feature is only valid for this type of system.
Indicates that the feature is only valid for this type of system.

Features

HP Service Part Number:
D4051-63001

System Board

Unified Memory Architecture
(UMA)

Main Memory

12 or 16 MB.
Maximum 192 MB

Video Controller

SiS 6205 Graphic

Trio 64 PnP on PCI Bus

Matrox MGA Millennium card

1 MB upgrade to 2 MB

1 MB upgrade to 2 MB
Installing two 512 KB
modules

2 MB standard, upgradable to
4 MB or 8 MB.

120MHz,133MHz,166MHz

133MHz, 166MHz, 180MHz,
200MHz

Video Memory

Pentium
Processor

HP Service Part Number:
D3657-63001 and D3661-63001
Separate Main Memory and Video Memory
8, 12 ,16 or 32 MB.
Maximum 128MB

17

1 HP Vectra 500 Series
System Overview

Features
Level-two cache
memory (optional)

HP Service Part Number:
D4051-63001

HP Service Part Number:
D3657-63001 and D3661-63001

256 KB synchronous cache are standard on the following models:
U.S./Canada
D4403, D4422A, D4428A, D4437A, D4439A, D4442A,
D4470A, D4475A, D4476A, D4477A, D4478A, D4471A, D4481A
Europe
D4416A, D4441A, D4443A, D4472A, D4473A
Latin America
D4425A, D4427A
Brazil
D4480A
China, India, Korea
D4426A, D4482A
Asia/Pacific Partner
D4434A, D4454A, D4474A, D4483A

18

1 HP Vectra 500 Series
System Overview

Comparison of HP Vectra 500 Series
Desktop and Minitower Models
The HP Vectra 500 Series PCs come in two packages, a desktop box and a
minitower box. The following table shows the differences between the two
packages.
Component

Desktop

Minitower

IDE Controller
Primary channel connectors

Two connectors for hard disk drives

Two connectors for hard disk
drives

IDE Controller
Secondary channel connectors

One connector is for a CD-ROM

Two connectors for a
supplementary hard disk drive and
CD-ROM

Floppy disk controller
connectors

Two connectors :
- One for a 3.5-inch floppy disk drive
- One for either a tape drive or a
5.25-inch disk drive

Two connectors for 3.5-inch floppy
disk drive
One connector for 5.25-inch floppy
disk drive or a tape drive
Maximum two devices connected
simultaneously

Expansion card slots (on
backplane)

Two 16-bit ISA
(full-length 30 cm / 12-inches)
One Combination slot (32-bit PCI or
one 16-bit ISA )
One 32-bit PCI (full-length)

Two 16-bit ISA
(full-length 30 cm / 12-inches)
One 16-bit ISA
(short-length 15 cm / 6-inches)
One Combination slot (32-bit PCI
or one 16-bit ISA )
Two 32-bit PCI (full-length)

Internal device shelves

One for hard disk drive

Two for hard disk drives

Front-access device shelves

One 3.5-inch
One 5.25-inch
One 5.25-inch, 1-inch high (or an
internal drive)

One 3.5-inch
Three 5.25-inch

19

1 HP Vectra 500 Series
System Overview

Principal Features
This section includes the principal features of the system board that are
available on both the desktop and minitower packages:
• An Enhanced IDE controller with two channels on the PCI bus.
• Rear panel connectors:
❒ 1 mouse socket
❒ 1 keyboard socket
❒ 1 display connector
❒ 1 parallel connector
❒ 2 serial ports
• a system ROM (using flash ROM technology) that can be easily updated
with the latest firmware, using the Phlash.exe program supplied with the
firmware upgrade. The system ROM contains:
❒ the BIOS (system BIOS, video BIOS and low option ROM)
❒ menu-driven SETUP with context-sensitive help (in U.S. English only)
• a keyboard/mouse controller and interface.

20

1 HP Vectra 500 Series
System Overview

Physical and Environmental Specifications
The following tables show the physical and environmental specifications of
the minitower and desktop computers. All the characteristics valid for both
computers are grouped together at the end of the table.
Computer
Type
Minitower

Characteristic
Weight

Description
13 kilograms (28.7 pounds)

(excluding keyboard and display)
Dimensions

44 cm (Depth) by 19.2 cm (Width) by 43.8 cm (Height)
(17.3 inches by 7.6 inches by 17.2 inches)

Footprint

0.084 m2 (0.9 sq ft)

Acoustic noise emission

≤ 40 dBA (as defined by DIN 45635 T.19 and ISO 7779)

Power supply

•
•
•

Desktop

Weight

Input voltage: 100-127 VAC and 200-240 VAC over 50/60 Hz
manual switching between 115 & 230 V
Power consumption: 30 W to 40 W (typical), 220 W (maximum)
Power availability: 160 W continuous, 200 W peak

9 kilograms (20 pounds)

(excluding keyboard and display)
Dimensions

39 cm (Depth) by 42 cm (Width) by 12.5 cm (Height)
(15.3 inches by 16.5 inches by 4.9 inches)

Footprint

0.17 m2 (1.8 sq ft)

Acoustic noise emission

Lw ≤ 40 dBA, Lp ≤ 34 dBA

Power supply

•
•
•

Input voltage: 100-127 VAC +200-240 VAC ac auto-ranging.
Input frequency: 50 / 60 Hz
Power consumption: 30 W to 40 W (typical), 150 W (maximum)
Power availability: 100 W continuous

21

1 HP Vectra 500 Series
System Overview

Computer
Type

Characteristic

These
characteristics
are valid for
both the
minitower
and desktop
computers.

Keyboard

NOTE

Description

Operating temperature

+5°C to +40°C (+40°F to +104°F)

Recommended operating
temperature

+15°C to +30°C (+59°F to +104°F)

Storage temperature

-40°C to +70°C (-40°F to +158°F)

Over temperature shutdown

+50°C ( +122°F)

Operating humidity

15% to 80% (relative)

Storage humidity

8% to 80% (relative)

Operating altitude

3100 m (10000 ft) max

Storage altitude

12200 m (40000 ft) max

Maximum thermal dissipation

91 kcal per hour (360 BTU per hour)

Flat

464 mm (Width) by 178 mm (Depth) by 33 mm (Height)
(18.3 inches by 7 inches by 1.3 inches)

Standing

464 mm (Width) by 178 mm (Depth) by 51 mm (Height)
(18.3 inches by 7 inches by 2 inches)

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 ranges can aggravate static electricity problems and
cause excessive wear of the disk surface.

22

1 HP Vectra 500 Series
System Overview

Power Consumption
NOTE

The figures given below are valid for both the minitower and desktop computers
with a standard configuration—no expansion cards and no CD-ROM drive. For
other configurations, the power consumption values will be higher.

1.

NOTE

Full Power Mode

<44 W

Standby Mode

<29 W

Suspend Mode

<24 W

Off

< 5 W1
The power supply in the computer continues to supply power to the
CMOS memory, even when turned off.

When the PC is turned off with the power button on the front panel, the power
consumption falls below 5 watts, but is not zero. The special on/off method used
by this PC considerably extends the lifetime of the power supply. To reach zero
power consumption in “off” mode, either unplug the PC from the power outlet
or use a power block with a switch.

Typical Power Consumption/Availability for ISA Expansion Card Slots
+5V

4.5A limit per slot (limited by system board)

+ 12 V

1.5A limit per slot (limited by system board)

-5V

0.1A total power limit (limited by power supply)

- 12 V

0.3A total power limit (limited by power supply)

Typical Power Consumption/Availability for PCI Expansion Card Slots
+5V

4.5A maximum per slot

+ 12 V

0.5A maximum per slot

- 12 V

0.1A maximum per slot

23

1 HP Vectra 500 Series
System Overview

Rear Panel Connectors
The external connectors on the rear panel of the computer are used to
connect the mouse, keyboard and display. The 25-pin parallel port can be
used for connecting a parallel printer, while the two 9-pin buffered serial
ports are for serial printers. The following diagram shows the rear panel
connectors for the minitower and desktop computers.

Serial Device Connectors

Display Connector

6 - Ground
Red - 1

11 - Not Used
7 - Ground

Green - 2

12 - Data from display (DDC1)
8 - Ground

Blue - 3

13 - H-Sync

9 - Not Used

Not Used - 4

14 - V-Sync
10 - Ground

Ground - 5

15 - Not Used

5 - Clock
3 - Ground
1 - Data

Power Key - 6
+5V dc - 4
Not Used - 2

Keyboard Socket (upper)
Mouse Socket (lower)

24

1- CF (DCD)
(DSR) CC - 6
2- BB (RD)
3- BA (TD)
4- CD (DTR)

(RTS) CA - 7
(CTS) CB - 8
(RI) CE - 9

5- AB (GND)

Strobe - 1
DO - 2
D1 - 3
D2 - 4
D3 - 5
D4 - 6
D5 - 7
D6 - 8
D7 - 9
ACK -10
BUSY -11
PE -12
SLCT -13

14 - AUTO FD
15 - ERROR
16 - INIT
17 - SLIN
18 - Ground
19 - Ground
20 - Ground
21 - Ground
22 - Ground
23 - Ground
24 - Ground
25 - Ground

Parallel Device Connector

1 HP Vectra 500 Series
CD-ROM Drive Specifications

CD-ROM Drive Specifications
WARNING

To avoid electrical shock and harm to your eyes by laser light, do not open the
CD-ROM drive enclosure. Do not attempt to make any adjustment to the CDROM drive. Refer servicing to qualified personnel only. The CD-ROM drive is a
Class 1 laser product.

Data Capacity

•656 MB (Mode 1)
•748 MB (Mode 2)

Data Transfer Rate

Depends on the model. The single-speed rate is 150 KB/sec. Therefore, for
example, an 8X model has a data transfer rate of 1200 KB/sec.

Buffer Size

•≥ 128 KB

Average Seek Time

•< 200 ms (quadruple-speed and faster models)

Rotational Speed

Depends on the model. The single-speed is 200-530 rpm. Therefore, for
example, an 8X model has a rotational speed of 1600-4240 rpm.

Interface

•ATAPI

Laser

•Type: Semiconductor Laser GaAlAs
•Wavelength: 785 nm ± 30 nm
•Output Power: 3 mW ± 3 mW
•Pulse Duration: T ≥ 3×10−4 sec

Power Requirements

•5 V, 12 V (see the label on the CD-ROM drive).

Supported CD-ROM Disks •CD-ROM XA (Mode 2 Form 1, Mode 2 Form 2)
•CD-Digital Audio
•Audio-combined CD-ROM
•CD-I disks (readable)
•CD-I Ready disks (readable)
•CD Bridge disks
•Photo CD (single and multisession)

25

1 HP Vectra 500 Series
CD-ROM Drive Specifications

26

2

System Board - (SiS Chipset)
(Part Number: D4051-63001)
This section describes the components and features of the SiS (Silicon
Integrated System) chipset-based system board. This system board has the
HP Service Part Number: D4051-63001.

27

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Overview

Overview
The type of system board described in this section uses shared memory
based on UMA (Unified Memory Architecture), meaning that there is no
dedicated frame buffer used by the video controller (SiS 6205). Instead, the
controller uses a portion of the system memory as a frame buffer.
The following tables show the models that are associated with the HP
Service Part Number: D4051-63001. For further detailed information
concerning system features and a comparison between the desktop and
minitower models, refer to “System Features” on page 17.

Model (Desktops)

Product Number

520 5/133

D4402A

D4403A

D4404A

D4434A

520 CD1 5/133

D4413A

D4414A

D4437A

D4460A

D4420A

D4428A

2

520 MCx 5/120
520 MCx2 5/133
520 MCx2 5/166

D4440A

D4442A

D4443A

1 =Includes CD-ROM
2 = Includes CD-ROM and Modem/Audio

Model
(Minitowers)

Product Number

525 5/133

D4454A

525 CD1 5/166

D4422A

D4423A

D4424A

525 MCx2 5/133

D4416A

D4418A

D4419A

525 MCx2 5/166

D4426A

D4427A

D4439A

1 =Includes CD-ROM
2 = Includes CD-ROM and Modem/Audio

28

D4425A

D4441A

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Overview

Configuration
• Supported Processor: P54CS.
• Level-2 (L2) 256 KB cache sockets.
• UMA Chipset from SiS consisting of three chips that interface between the
three main buses (the Host bus, the PCI bus and the ISA bus):
SiS 5511: Host/PCI bridge, L2 cache memory controller
and memory controller.
SiS 5512: PCI Local Data Buffer (Data Path).
SiS 5513: PCI/ISA bridge, plus integrated functions.
• Six SIMM module sockets for Extended Data Out (EDO) Dram main
memory.
• Onboard graphic controller:
SiS 6205 used in UMA mode.
• NS 87308 or NS 87307: Super I/O which includes the following features:
Keyboard and mouse controller.
Floppy drive controller.
Two serial ports.
One parallel port.
• Little-Ben chip is an HP designed chip that takes care of security features,
power management and some glue logic.
• APM (Advanced Power Management) 1.1 power management compliant.
• 2 Mb Flash Memory (28F020-150) for BIOS.

29

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
System Board Architecture

System Board Architecture
The following diagram shows the architecture of the various components
and the SiS chipset on the system board.

30

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
System Board Physical Layout

System Board Physical Layout
The following system board diagram will help you identify where the
different components and connections are located on the board. Refer to the
section System Board Switches and Jumpers (D4051-63001) on page 38 for
switches and jumper settings.
CD-ROM Connector (IDE Channel 2)
Backplane Connector

Floppy Disk Drive Connector

HDD Connector (IDE Channel 1)
Power Connector

Mouse
Keyboard

JP4

Space-bar Power-on
CPU Bus Frequency
BIOS
Flash
Super I/O

Parallel

2
1

4
3

J7

J1
SiS 5511
Memory
controller

SiS 5513
PCI/ISA
bridge

Little
Ben

Status Panel VE

Cache Jumper

J15 Product ID flag
Main Memory Sockets

1
2
3

C1

Serial A

Battery

J6

C2

Ext. Battery
Connector

J2

Power
Connector 3.3 V

B2
B1
A2
Serial B

CPU Core
Frequency

A1
1
2
3

SW1
Video

SW2
1
2

*
VESA Feature Connector

SiS 6205
Graphics
controller

Multi-purpose Security
Feature Switch

SiS 5512
Data Buffer

Second Level Processor Socket
Cache Memory Socket

31

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

SiS Chipset
The SiS chipset consists of three chips, each encapsulated in a 208-pin
plastic quad flat pack (PQFP) package, that interface between the three
main buses (the Host bus, the PCI bus and the ISA bus):
• The PCMC chip (SiS 5511) is a combined PL/PCI bridge and cache
controller and main memory controller and PCI arbiter.
• The PLDB chip (SiS 5512) provides the PCI local data buffer/path.
• The PSIO chip (SiS 5513) provides the PCI/ISA bridge, responsible for
transferring data between the PCI bus and the ISA bus, and also contains
the IDE controller.
The block diagram on the following page, gives an overview of the
computer’s structure. The SiS chipset is described in more detail later on in
this chapter.

32

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Pentium Processor
Processor Local Bus
(64 bit, 60/66 MHz)

Level-2
Cache

Host Bridge & Memory
Controller SiS 5511
CPU
PCI
Interface
Interface
Cache
Control

SiS 5512
Control

Memory
Control

UMA
Arbitration

Main
Memory

Control

Data Path
SiS 5512

Video
Controller
SiS 6205

PCI Bus
(32 bit, 30/33 MHz)

PCI/ISA Bridge
SiS 5513
PCI Bus
ISA Bus
Interface
Interface
IDE
Controller
DMA
Controller

Interrupt
Controller

BIOS
(Flash Memory
28F020)

Super I/O
NS 87308 or
NS 87307

Little Ben

ISA Bus
(16 bit, 7.5/8.33 MHz)

33

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Host/PCI Bridge (SiS 5511 Chip)
The SiS 5511 chip (PCMC) bridges between the host bus and the PCI local
bus. This device integrates cache and memory control functions and
provides bus control functions for the transfer of information between the
micro-processor, cache, main memory and the PCI bus.
The PCMC monitors each cycle initiated by the CPU, and forwards it to the
PCI bus if the CPU cycle does not target the local memory. For the CPU or
the PCI to the local memory cycles, the built-in cache and DRAM controller
assumes the control to the secondary cache, DRAMs, and the
SiS 5512 PCI local data buffer (PLDB).
The main features supported by the PCMC chip are:
• Intel Pentium CPU and CPU at 66/60/50 MHz (external clock speed).
• Integrated PCI bridge (asynchronous PCI clock always @ 33 MHz).
• Host bus frequencies of 50, 60, 66.667 MHz.
• VGA Shared Memory Architecture (with Direct Memory Access):
Direct Memory Accesses;
Shared Memory Area 1M and 2M.
• PCI arbiter.
• Pipelined Address Mode of Pentium CPU.
• Integrated Second Level (L2) Cache Controller.
• DRAM Controller, supporting:
EDO DRAM;
32-bit/64-bit mix mode.
• Two Programmable Non-Cacheable Regions.
• Option to Disable Local Memory in Non-Cacheable Regions.
• Shadow RAM in Increments of 16 Kbytes.
• Supports SMM Mode of CPU.
• Supports CPU Stop Clock.
• Supports Break Switch.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Feature Summary
Function

Features

Cache controller

❒
❒
❒
❒
❒

Integrated DRAM controller

❒ Supports four banks of SIMMs.
❒ Supports 256K, 512K, 1MB, 2MB, 4MB, 16MB 70ns FP/EDO
DRAM.
❒ Supports 4K refresh DRAM.
❒ Supports 3V or 5V DRAM.
❒ Supports symmetrical and asymmetrical DRAM.
❒ Supports 32 bits/64 bits mixed mode configuration.
❒ Supports concurrent write back.
❒ Supports Read Cycle Power Saving Mode.
❒ Table-free DRAM configuration, auto-detect DRAM size, bank
density, single/double sided DRAM, EDO/FP DRAM for each
bank.
❒ Supports CAS before RAS “Intelligent Refresh”.
❒ Supports Relocation of System Management Memory.
❒ Optional Parity Checking.
❒ Programmable CAS# Driving Current.
❒ Fully configurable for the Characteristic of Shadow RAM (640
KByte to 1 Mbyte).
❒ Supports EDO/FP 5/6-2-2-2/-3-3-3 burst read cycles.

Integrated PCI Bridge

❒ Supports asynchronous PCI clock.
❒ Translates the CPU cycles into the PCI bus cycles.
❒ Provides CPU-to-PCI Read Assembly and Write Disassembly
Mechanism.
❒ Translates sequential CPU-to-PCI Memory Write Cycles into PCI
Burst Cycles.
❒ Zero Wait State Burst Cycles.
❒ Provides a prefetch mechanism dedicated for IDE Read.
❒ Supports Advanced Snooping for PCI Master Bursting.
❒ Maximum PCI burst transfer from 256 bytes to 4 Kbytes.

PCI bus arbiter

❒
❒
❒
❒

8 bits or 7 bits TAG with Direct mapped organization.
Write back mode (only supported by BIOS)
Uses burst and pipelined burst SRAMs.
64-KByte to 1 MByte cache summary
Read/Write cycle of 3-1-1-1 using burst or pipelined SRAMS at
66 MHz.

Supports PCI bus arbitration for up to four masters.
Supports rotating priority mechanism.
Hidden arbitration scheme minimizes arbitration overhead.
Supports concurrence between CPU to memory and PCI to PCI.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Data Path (SiS 5512 Chip)
The SiS 5512 PCI Local Data buffer (PLDB) provides bidirectional data
buffering among the 64-bit Host Data Bus, the 64/32-bit Memory Data Bus,
and the 32-bit PCI Address/Data Bus.
The PLDB incorporates three FIFOs (First In First Out) and one read buffer
among the bridges of the CPU, PCI, and memory buses. This buffering
scheme, among many things, smooths the differences in bandwidths
between the three buses, therefore improving the overall system
performance. During bus operations between the Host, PCI and Memory, the
the PLDB receives control signals from the SiS 5511 PCMC, performs
functions such as latching data, forwarding data to destination bus, data
assemble and disassemble.
The PLDB mainly contains storage elements. The behavior of the Data Path
chip is always controlled by the SiS 5511 Host/PCI bridge.
The main features of the SiS 5512 chip are:
• Supports full 64-bit Pentium Processor data bus.
• Provides a 32-bit interface to the PCI.
• Always sustains 0 Wait Performance on CPU-to-Memory.
• Always streams 0 Wait Performance on PCI-to/from-Memory Access.
• Supports built-in 32-bit General Purpose Register.
• Provides parity generation for memory writes.
• Provides optional parity checker for memory reads.

PCI/ISA Bridge (SiS 5513 Chip)
The SiS 5513 chip is a highly integrated PCI/ISA system I/O1 (PSIO) device
that includes all the necessary system control logic used in the PCI/ISA
specific applications. The PSIO device serves as a bridge between the PCI
bus and the ISA bus, translates ISA master/DMA device cycles onto the PCI
bus, and serves as a built-in PCI master/slave IDE interface.
It incorporates a seven-channel programmable DMA controller, 16-level
programmable interrupt controller, a programmable timer with three
counters with 256 bytes (CMOS SRAM not used), and an onboard Plug and

1.

36

I/O = Input/Out

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Play port. The PSIO supports two bus master IDE channels providing up to four
IDE devices. The PSIO does not require any IDE buffering to be used, and
therefore no IDE buffers are used.
The SiS 5513 chip consists of:
•
•
•
•
•
•
•

A PCI bridge that translates PCI cycles onto the ISA bus.
ISA master/DMA device that translates cycles onto the PCI bus.
A seven-channel programmable DMA controller.
A sixteen-level programmable interrupt controller.
A programmable timer with three counters.
An onboard Plug and Play port.
A built-in PCI master/slave IDE interface.

The PSIO PCI bus interface provides the interface between PSIO and the PCI
bus. It contains both PCI master and slave bridges to the PCI bus. As a PCI slave,
the PSIO responds to both I/O and memory transfers.

ISA Bus Controller
The PSIO ISA Bus Interface accepts cycles from the PCI bus interface and then
translates them for the ISA bus. It also requests the PCI master bridge to
generate PCI cycles on behalf of DMA or ISA master. The ISA bus interface
contains a standard ISA Bus Controller and a Data Buffering logic. The PSIO can
directly support six ISA slots without external data or address buffering.

DMA Controller
The PSIO contains a seven-channel DMA controller. The channel 0 to 3 is for 8bit DMA devices while channel 5 to 7 is for 16-bit devices. The channels can also
be programmed for any of the four transfer modes: The three active modes
(single, demand, block), can perform three different types of transfer: read,
write and verify. The address generation circuitry in the PSIO can only support a
24-bit address for DMA devices.

Interrupt Controller
The PSIO provides an ISA-compatible interrupt controller that incorporates the
functionality of two 82C59 interrupt controllers. The two controllers are
cascaded so that 14 external and two internal interrupts are supported.

Timer/Counter
The PSIO contains a three-channel counter/timer. The counters use a division of
14.31818 MHz OSC input as the clock source.

37

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

System Board Switches and Jumpers (D4051-63001)
The system board switches and jumpers are used to configure certain
aspects of the computer.

SW1 Switch
This switch is multi-purpose and is used to modify Flash, CMOS and
password settings.
Switch

Default
Setting

1

OFF

Flashing Enable

Flashing Disable

Updating the BIOS. Set the security
mode. Set the switch to the ON
position to prevent the BIOS from
being upgraded.

2

OFF

CMOS is in normal
operation

CMOS Clear

To clear the CMOS configuration.
Set the switch to the ON position
and restart the PC. Return the
switch to the OFF position and
restart the PC to return to normal
operation.

3

OFF

Password is in normal
operation

Password Clear

To clear the password. Set the
switch to the ON position and
restart the PC. Return the switch to
the OFF position and restart the PC
to return to normal operation.

38

OFF

ON

COMMENTS

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

SW2 Switch
This switch is used to select the internal CPU frequency by defining the CPU
Bus Frequency / CPU Frequency ratio. If the processor is upgraded, the
ratio might have to be changed to adapt to the new processor.
The following table includes some examples of the settings to use for
different processor speeds:
Processor Speeds

Switch Block SW2
Position

Jumper J7 Settings

Ratio

1

2

CPU Bus
Frequency

Pins Shorted

CPU Frequency 100 MHz

2/3

OFF

OFF

66 MHz

3-4

CPU Frequency 120 MHz

1/2

ON

OFF

60 MHz

1-3

CPU Frequency 133 MHz

1/2

ON

OFF

66 MHz

3-4

CPU Frequency 150 MHz

2/5

ON

ON

60 MHz

1-3

CPU Frequency 166 MHz

2/5

ON

ON

66 MHz

3-4

The default settings for Switch 2 and Jumper J7 depend on the
particular HP Vectra 500 Series PC model.

CPU Bus Frequency Jumper
This jumper (J7) defines the CPU bus frequency. The following illustration
shows how to set the desired bus frequency.

1
3
50 MHz

4

1
3
60 MHz

4

1
3

4

66 MHz

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Cache Jumper
This jumper (J6) selects either synchronous or asynchronous cache type. If
the PC is not installed with any level-2 cache, the default jumper setting is
synchronous cache. The following illustration shows the two cache-type
jumper settings.

3

2

1

Synchronous

3

2

1

Asynchronous

Space-Bar Power-On Feature Jumper
The Space-Bar Power-On feature (JP4 “KBD Start” on the system board)
enables you to turn on the PC using the spacebar. To disable this feature, set
the Space-Bar Power-On field in the Setup program to Disable, or remove
the jumper. Removing the jumper overrides the setting in the Setup
program.

Power-on
spacebar enabled

NOTE:

Power-on
spacebar disabled

To use the Power-On spacebar feature, an HP Vectra Keyboard displaying a
Power-On icon is required.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
SiS Chipset

Processor Socket (D4051-63001)
The microprocessor is packaged in a pin-grid-array (PGA), which is seated
on the system board in a zero-insertion-force (ZIF) socket.

Memory Sockets (D4051-63001)
There are six main memory module sockets available with the HP Vectra 500
Series minitower and desktop computers. The sockets are arranged in three
banks (A to C), allowing memory installation up to a maximum of 192 MB.
The following illustration shows the physical layout of the memory bank
organization.
J10

SIMM Socket 6 (C2)

J9

SIMM Socket 5 (C1)

J5

SIMM Socket 4 (B2)

J4

SIMM Socket 3 (B1)

J14

SIMM Socket 2 (A2)

J13

SIMM Socket 1 (A1)

Bank C

Bank B

Bank A

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Backplane (D4051-63001)

Backplane (D4051-63001)
Desktop Backplane
The HP Vectra 500 Series desktop backplane supports two 16-bit ISA
(Industry Standard Architecture) cards, one 32-bit PCI (Peripheral
Component Interconnect) card and has one combination slot for an ISA or
PCI card.

1 x PCI

Slot 1

1 x ISA/PCI
Combination Slot

Slot 2
Slot 3

2 x ISA
Slot 4
System Board
Connector

The four expansion card slots are arranged as follows:
• Slot 1 - (the top slot) can be used for a 32-bit PCI card.
• Slot 2 - Combination slot that can be used for a 32-bit PCI card
or a full-length (30 cm / 12 inches) 16-bit ISA card.
• Slot 3 - can be used for a full-length 16-bit ISA card (30 cm / 12 inches).
• Slot 4 - can be used for a half-length 16-bit ISA card (15 cm / 6 inches).

42

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Backplane (D4051-63001)

Minitower Backplane
The HP Vectra 500 Series minitower backplane supports three 16-bit ISA
(Industry Standard Architecture) cards, two 32-bit PCI (Peripheral
Component Interconnect) cards and has one combination slot for an ISA or
PCI card.

Slot 6
Slot 5

3 x ISA

Slot 4
Slot 3
2 x PCI
Slot 2
1 x ISA/PCI
Combination Slot

Slot 1

System Board
Connector

The six expansion card slots are arranged as follows:
• Slot 1 - (the innermost) Combination slot that can be used for a
half-length 16-bit ISA card (15 cm / 6 inches) or a 32-bit PCI card.
• Slot 2 - can be used for a 32-bit PCI card.
• Slot 3 - can be used for a 32-bit PCI card.
• Slot 4 - can be used for a full-length 16-bit ISA card (30 cm / 12 inches).
• Slot 5 - can be used for a full-length 16-bit ISA card (30 cm / 12 inches).
• Slot 6 - can be used for a full-length 16-bit ISA card (30 cm / 12 inches).

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the Processor Local Bus (D4051-63001)

Devices on the Processor Local Bus (D4051-63001)
Main Memory (UMA)
The SiS 5511 chip can support single-sided or double-sided 64/72 bits (with
or without parity) FP (Fast Page mode) or EDO (Extended Data Output)
DRAM (dynamic random-access memory) modules. Half populated banks
are also supported. The PC can use 60 ns EDO or 70 ns FP DRAM.
It is also possible to mix the EDO DRAM and FP DRAM bank by bank and
the corresponding DRAM timing will be switched automatically according to
register setting. Both symmetrical and asymmetrical type DRAMs are
supported.
The following table is an example of how to use the memory module banks,
with three different configurations.
BANK A
Memory Total

A1

A2

8 MB

4 MB

4 MB

12 MB

4 MB

4 MB

16 MB

8 MB

8 MB

BANK B
B1

B2

BANK C
C1

C2

4MB

Cache Memory (D4051-63001)
The PC supports two levels of cache memory:
• Level-1 (L1), cache memory which is incorporated within the Pentium
processor chip.
• Level-2 (L2), cache memory which is optionally installed as a memory
module on the system board.
Cache memory acts as temporary storage for data and instructions from
main memory. Since the system is likely to use the same data several times,
it is faster to get it from the on-chip cache than from the main memory.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the Processor Local Bus (D4051-63001)

Level-1 Cache Memory
The L1 cache memory is divided into two separate banks:
• L1 I-cache for instruction words.
• L1 D-cache for data words.
For more information about Level-1 cache, refer to “Instruction and Data
Cache” on page 46.

Level-2 Cache Memory
The L2 cache memory, when installed, has a 32-byte line size. It is controlled
by the Host Bridge chip (SiS 5511) in the system board chipset. A single HP
cache memory module consists of 256 KB of direct mapped, synchronous,
static random access memory (SRAM).

Pentium Processor (D4051-63001)
The Pentium processor uses 64-bit architecture and is 100% compatible
with Intel’s family of x86 processors. All application software that has been
written for Intel386 and Intel486 processors can run on the Pentium without
modification. The Pentium processor contains all the features of the
Intel486 processor, with the following added features which enhance
performance:
• Superscalar Architecture
• Floating Point Unit
• Dynamic Branch Prediction
• Instruction and Data cache
• Data Integrity
• Supports MultiProcessor Specification (MPS) 1.1
• PCI bus architecture
• Advanced Power Management capability for reducing power consumption
The processor is seated in a Zero Insertion Force (ZIF) socket.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the Processor Local Bus (D4051-63001)

Superscalar Architecture
The Pentium processor’s superscalar architecture has two instruction
pipelines and a floating-point unit, each capable of independent operation.
The two pipelines allow the Pentium to execute two integer instructions in
parallel, in a single clock cycle. Using the pipelines halves the instruction
execution time and almost doubles the performance of the processor,
compared with an Intel486 microprocessor of the same frequency.
Frequently, the microprocessor can issue two instructions at once (one
instruction to each pipeline). This is called instruction pairing. Each
instruction must be simple. One pipeline will always receive the next
sequential instruction of the one issued to the other pipeline.

Floating Point Unit
The Floating Point Unit (FPU) incorporates optimized algorithms and
dedicated hardware for multiply, divide, and add functions. This increases
the processing speed of common operations by a factor of three.

Dynamic Branch Prediction
The Pentium processor uses dynamic branch prediction. To dynamically
predict instruction branches, the processor uses two prefetch buffers. One
buffer is used to prefetch code in a linear way, the other to prefetch code
depending on the contents of the Branch Target Buffer (BTB). The BTB is a
small cache which keeps a record of the last instruction and address used. It
uses this information to predict the way that the instruction will branch the
next time it is used. When it has made a correct prediction, the branch is
executed without delay, thereby enhancing performance.

Instruction and Data Cache
The Pentium processor has separate on-chip code instruction and data
caches. Each cache is 8 KB in size with a 32-bit line. The cache acts as
temporary storage for data and instructions from the main memory. As the
system is likely to use the same data several times, it is faster to get it from
the on-chip cache than from the main memory.
Each cache has a dedicated Translation Lookaside Buffer (TLB). The TLB is
a cache of the most recently accessed memory pages. The data cache is
configured to be Write-Back on a line-by-line basis (a line is an area of
memory of a fixed size).

46

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the Processor Local Bus (D4051-63001)

The data cache tags (directory entries used to reference cached memory
pages) are triple-ported to support two data transfers and an inquire cycle
in the same clock cycle. The code cache tags are also triple-ported to
support snooping (a way of tracking accesses to main memory by other
devices) and split line accesses.
Individual pages of memory can be configured as cacheable or noncacheable by software or hardware. They can also be enabled and disabled
by hardware or software.

Data Integrity
The processor uses a number of techniques to maintain data integrity. It
employs two methods of error detection:
• Data Parity Checking
This is supported on a byte-by-byte basis, generating parity bits for data
addresses sent out of the microprocessor. These parity bits are not used
by the external subsystems.
• Internally
The processor uses functional redundancy checking to provide maximum
error detection of the processor and its interface.

Advanced Power Management
The Advanced Power Management (APM) is a standard, defined by Intel
and Microsoft, for a power-saving mode that is applicable under a wide
range of operating systems. The version APM 1.1 supports the following
modes: Fully-on, Standby, Suspend, and Off.
The Suspend mode is managed at the operating system level only, from the
Windows 95 Start menu. There is no longer the inter-activity between BIOS
Setup and operating systems, and no longer a “sleep at” item on the Setup
program menus, to avoid the BIOS from shutting down the system at the
wrong moment.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the PCI Bus

Devices on the PCI Bus
Graphics/Integrated Video (D4051-63001)
The HP Vectra 500 Series PC uses the SiS 6205 video controller and
supports video resolutions up to 1280 x 1024.

Video Controller
As explained earlier, the SiS 6205 video controller supports the UMA
architecture, and therefore no dedicated video memory is loaded on the
system board. The shared frame buffer is located in the system DRAM, and
the video controller accesses it through the M A (MA) and M D (MD) bus.
The SiS 6205 video controller arbitrates for the use of the system memory
with the memory controller included in the SiS 5511 Host Bridge and
Memory Controller. Whenever the video controller wants to access the
memory bus, it makes a request to the SiS 5511 controller. This then grants
the memory bus to the SiS 6205 video controller unless it is needed by the
chipset. The arbitration scheme takes place through three signals:
VGAREQ#, VGAGNT#, and PREQ (if the high/low priority scheme is
enabled).
The SIS 6205 video controller offers full compatibility with VGA. In addition,
the features are enhanced beyond Super VGA by hardware which
accelerates graphical user interface operation in Windows 95.
The enhanced features include:
• Direct connectivity to PCI bus.
• True acceleration for 8, 16 and 32-bit pixel depths.
• 57 MHz clock for video memory.
• Fully programmable Pixel Clock Generator up to 135 MHz.
• Fast linear addressing with full software relocation.
For details about supported video resolutions, refer to “Video Controllers”
on page 115 for a table containing all the video resolutions supported.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the PCI Bus

Integrated Drive Electronics (IDE) Controller
The IDE controller is implemented as part of the PCI/ISA bridge chip. It is
driven from the PCI bus and has PCI-Master capability. It supports
Enhanced IDE (EIDE) and Standard IDE (Bus Master IDE). To use the
Enhanced IDE features, though, hard disk drives must be compliant with
Enhanced IDE.
The following table shows the two different cable sets for the desktop and
minitower computers.
Desktop

Minitower

The first cable attached to the connector
marked HDD on the system board,
supports:

Up to two IDE hard disk drives

Up to two IDE hard disk drives

The second cable attached to the
connector marked CD-ROM on the
system board, supports:

Either an IDE CD-ROM drive or
an IDE hard disk drive

An IDE CD-ROM drive and a
third hard disk drive, or two IDE
CD-ROM drives

The following tables show the possible multiple IDE drive combinations for
the desktop and minitower computers when installing additional devices.
Desktop

Configuration

Connections to Data Cables

One hard disk drive

1. Bootable hard disk drive:

Master connector, HDD data cable

Two hard disk drives

1. Bootable hard disk drive:
2. Second hard disk drive:

Master connector, HDD data cable
Slave connector, HDD data cable

Three hard disk
drives

1. Bootable hard disk drive:
2. Second hard disk drive:
3. Third hard disk drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable

One hard disk drive
One CD-ROM drive

1. Bootable hard disk drive:
2. CD-ROM drive:

Master connector, HDD data cable
Master connector, CD-ROM data cable

Two hard disk drives

1. Bootable hard disk drive:
2. Second hard disk drive:
3. CD-ROM drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable

One CD-ROM drive

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the PCI Bus

Minitower

Configuration

Connections to Data Cables

One hard disk drive

1. Bootable hard disk drive:

Master connector, HDD data cable

Two hard disk drives

1. Bootable hard disk drive:
2. Second hard disk drive:

Master connector, HDD data cable
Slave connector, HDD data cable

Three hard disk
drives

1. Bootable hard disk drive:
2. Second hard disk drive:
3. Third hard disk drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable

One hard disk drive
One CD-ROM drive

1. Bootable hard disk drive:
2. CD-ROM drive:

Master connector, HDD data cable
Master connector, CD-ROM data cable

Two hard disk drives

1. Bootable hard disk drive:
2. Second hard disk drive:
3. CD-ROM drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable

Three hard disk
drives
One CD-ROM drive

1. Bootable hard disk drive:
2. Second hard disk drive:
3. Third hard disk drive:
4. CD-ROM drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
Slave connector, CD-ROM data cable

Two hard disk drives

1. Bootable hard disk drive:
2. Second hard disk drive:
3. CD-ROM driver:
4. Second CD-ROM drive:

Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
Slave connector, CD-ROM data cable

One CD-ROM drive

Two CD-ROM drives

The BIOS uses the auto-detected drive information to select the fastest
configuration supported by each installed IDE drive.

Transfer Rates Versus Modes of Operation
The IDE controller supports 32-bit Windows and DOS I/O transfers (many
IDE controllers use Windows integral IDE driver which only supports 16-bit
I/O transfers). It supports programmed I/O (PIO) modes up to mode 4 and
direct memory access (DMA) modes up to mode 2 (giving a cycle time of
120 ns, and a transfer rate of 16.7 MB per second, in both cases).
The five PIO modes allow the following transfer rates:
Mode

0

1

2

3

4

Cycle time (ns)

600

383

240

180

120

Transfer rate (MBytes/s)

3.33

5.22

8.33

11.1

16.7

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the PCI Bus

The three DMA modes allow the following transfer rates:
Mode

0

1

2

Cycle time (ns)

480

150

120

Transfer rate (MBytes/s)

4.2

13.3

16.7

Operated in slave mode, the IDE controller saturates the PCI bus with
transfers, thus limiting the actual achieved transfer rate to less than
10 MBytes per second.
Operated in master mode, though, the IDE controller is allowed to work
autonomously of the processor, and the full 16.7 MBytes per second transfer
rate can be achieved with less than 33% occupancy of the PCI bus (thus
allowing the processor to do other work for more than 67% of the cycle
times, while the IDE transfers take place in parallel).

Disk Capacity Versus Modes of Addressing
The amount of addressable space on the hard disk is limited by three
factors:
• Physical size of the hard disk.
• Addressing limit of the IDE hardware.
• Addressing limit of the BIOS.
The Extended-CHS (Cylinder Header Sector) addressing scheme allows
larger disk capacities to be addressed than under CHS, by performing a
translation (for example regrouping the sectors so that there are twice as
many logical tracks as is possible under the CHS addressing scheme).
Cylinders
per Device

Heads per
Cylinder

Sectors per
Track

Bytes per
Sector

Bytes per
Device

CHS

64

16

1024

512

528 M

ECHS

64

256

1024

512

8.4 G

LBA

-

-

256 M (=228)

512

137 G

If the Setup field has been set to automatic, the logical block addressing
(LBA) mode will be selected for each device that supports it.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the ISA Bus

Devices on the ISA Bus
Super I/O Chip (NS 87308 or NS 87307)
The basic input/output control functions are provided by the Super I/O chip,
the NS 87308 or NS 87307. The Super I/O chip is contained within a 160-pin
PQFP package. The chip provides the control for the following devices:
Logical
Device

Functions

0

Keyboard controller

1

Mouse controller

2

RTC and Advanced Power supply Controller (APC)

3

Floppy disk controller

4

Parallel port controller

5

UART2 & IR controller

6

UART1 controller

7

GPIO

8

Power management

The Super I/O chip incorporates one Plug and Play compatible chip, is 100%
compatible with the ISA architecture, and provides:
•
•
•
•
•
•
•
•
•

An integrated floppy drive controller.
A keyboard controller.
A mouse controller.
A real-time clock (RTC).
Two UART’s (serial ports ).
An IEEE1284 parallel port.
Three general purpose chip select signals
General purpose I/O register set.
An X-bus data buffer that connects the 8-bit X data bus to the ISA data
bus.
• Non-Volatile Memory (NVM) support via the Chip Select 0 (CS0) signal
that is powered by the VCCH.

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the ISA Bus

Feature Summary
Function

Features

Floppy disk controller

❒ Software compatible with the DP8473, the 765A, and the
N82077
❒ 16-byte FIFO (default disabled)
❒ Burst and non-burst modes
❒ Perpendicular recording drive support
❒ New high-performance internal digital data separator (no
external filter components required)
❒ Low-power CMOS with enhanced power-down mode
❒ Automatic media-sense support

UARTs

❒ Software compatible with the PC16550A and PC16450
❒ A modifiable address that is referenced by a 16-bit programmable register.
❒ 13 IRQ channel options.
❒ Shadow register support for write-only bits.
❒ Four 8-bit DMA options for UART2.

Bidirectional parallel port

❒
❒
❒
❒
❒

Three general purpose pins for three
separate chip select signals

❒ Programmed for game port control.
❒ Chip Select 0 (CS0) signal produces open drain and is powered
by the VCCH.
❒ Chip Select 1 (CS1) and 2 (CS2) signals have push-pull buffers
and are powered by the main VDD.
❒ Decoding of chip select signals depends on the address and the
Address Enable (AEN) signal, and can be qualified using the
Read (RD) and Write (WR) signals.

Enhanced power management

❒
❒
❒
❒

Enhanced Parallel Port (EPP) compatible
Extended Capabilities Port (ECP) compatible
Bidirectional under either software or hardware control
Demand mode DMA support.
Selection of internal pull-up or pull-down resistor for Paper End
(PE) pin.
❒ Reduction of PCI bus utilization by supporting a demand DMA
mode mechanism and a DMA fairness mechanism.
❒ Includes protection circuit against damage caused when printer
is switched on, or operated at higher voltages.
❒ Output buffers that can sink and source 14 mA.

Special configuration registers for power down
Reduced current leakage from pins.
Low-power CMOS technology.
Ability to shut off clocks to all modules.

53

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the ISA Bus

Function

Features

16 Single-Bit General Purpose I/O ports
(GPIO)

❒ Modifiable addresses that are referenced by a 16-bit programmable register.
❒ Programmable direction for each signal (input or output).
❒ Programmable drive type for each output pin (open-drain or
push-pull).
❒ Programmable option for internal pull-up resistor on each input
pin.
❒ A back-drive protection circuit.

Clock source options

❒ Source is a 32.768 kHz crystal (an internal frequency multiplier
generates all the required internal frequencies).
❒ Source may be either a 48 MHz or 24 MHz clock input signal.

General features

❒ All accesses to the Super I/O chip activates a Zero Wait State
(ZWS) signal, except for accesses to the Enhanced Parallel Port
(EPP) and to configuration registers.
❒ Accesses to all configuration registers is through an Index and a
Data register, which can be relocated within the ISA I/O address
space.
❒ 160-pin Plastic Quad Flatpack (PQFP) package.

Serial/Parallel Ports
The Super I/O chip supports two serial ports and one bidirectional parallel
port. The serial ports are high speed UARTs with 16-Byte FIFOs, and can be
programmed as COM1, COM2, COM3, COM4, or disabled.
The parallel port can operate in four modes:
• Standard mode (PC/XT, PC/AT, and PS/2 compatible)
• Bidirectional mode (PC/XT, PC/AT, and PS/2 compatible)
• Enhanced mode (Enhanced Parallel Port or EPP compatible)
• High speed mode (MS/HP Extended Capabilities Port or ECP
compatible).
It can be programmed as LPT1 (378h, IRQ7), LPT2 (278h, IRQ5), or
disabled.

54

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the ISA Bus

Floppy Drive Controller
The Floppy Drive Controller (FDC) is software and register compatible with
the 82077AA, and 100% IBM compatible. It has an A and B drive-swapping
capability and a non-burst DMA option. The FDC supports any combination
of the following: tape drives, 3.5 inch flexible disk drives, 5.25 inch flexible
disk drives.

Keyboard and Mouse Controller
The PC has an 8042-based keyboard and mouse controller (the socket pin
layouts are as shown on page 24). The C3758A keyboard is supplied for use
with the Windows 95 operating system (though it will also work with other
operating systems). It has the following capabilities:
• Space-bar power-on, to start the computer from the Off state (if power on
from keyboard is enabled in the Setup program).
• Windows key (next to the
keys), which has the same effect as
clicking the Start button on the Windows 95 task bar.
• Pull-down key (next to the right
as clicking the right mouse button.

key), which has the same effect

55

2 System Board - (SiS Chipset) (Part Number: D4051-63001)
BIOS (version: GX.07.xx)

BIOS (version: GX.07.xx)
The following section is an overview of the BIOS features available with the
system identified by the BIOS version: GX.07.xx, installed on the HP Vectra
500 Series PC models with an HP Service Part Number: D4051-63001. For
further detailed information about the BIOS, refer to chapter 4, Summary of
the HP/Phoenix BIOS.

HP Setup Program
The PC has many security features to protect stored data, to protect the
SETUP configuration, and to prevent unauthorized operation of software
applications:
• User password.
• Administrator password (system configuration protection).
• Power-on prompt, with user or administrator password.
• Space-bar power-on protection. (Feature may be enabled or disabled.)
• Communications port protection. (Ports can enabled or disabled.)
• Floppy disk drive protection. (Disks can be read- or write-protected.)
• Boot protection. (Boot on floppy disk , CD-ROM and hard disk can be
enabled or disabled).

Flash ROM
The PC uses 256 KB of 200ns, Flash ROM. The HP BIOS boot code contains
SETUP, video BIOS, error messages, and ISA and PCI initialization. During
programming of the Flash ROM, the power supply switch and the reset
button are disabled to prevent accidental interruption.

Little Ben
Little Ben is an HP application specific integrated circuit (ASIC) that is
connected between the chipset and the processor. It has been designed to
act as a companion to the Super I/O chip.

56

3

System Board
(P/Ns D3657-63001 and D3661-63001)
The two system boards described in this chapter use the Intel SB82437/8
PCI chipset. The two boards are the same except that D3657-63001 has an
integrated (onboard) video controller and memory, whereas D3661-63001
uses a Matrox Millennium video card for its video controller and memory.

57

3 System Board (P/Ns D3657-63001 and D3661-63001)
Overview

Overview
This section lists the 520 and 525 models and product numbers that use the
two system boards D3657-63001 and D3661-63001.

D3657-63001 Models
Desktop Models
The following table lists the desktop models and products that use the
D3657-63001 system board.
Model

Product Number

520 MCx2 5/133

D4479A

520 MCx2 5/166

D4480A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

Minitower Models
The following table lists the minitower models and products that use the
D3657-63001 system board.
Model

Product Number

525 5/166

D4483A

525 5/200

D4474A

525 CD1 5/133

D4475A

525 CD1 5/166

D4476A

525 CD1 5/200

D4470A

525 MCx2 5/133

D4477A

525 MCx2 5/166

D4478A

525 MCx2 5/200

D4473A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

58

D4472A

D4481A

D4482A

3 System Board (P/Ns D3657-63001 and D3661-63001)
Overview

D3661-63001 Models
Minitower Models
The following table lists the minitower models and products that use the
D3661-63001 system board.
Model
525 MCx2 5/200

Product Number
D4471A

1 =Includes CD-ROM
2 =Includes CD-ROM and Modem/Audio

Configuration Summary
• Supported processors: P54C and P54CS.
• Level-2 cache memory socket - supports 256-KB cache memory module
(the module is already installed in some PCs).
• Intel SB82437/8 PCI chipset which consists of four chips that interface
between the three main buses (the processor’s local (PL) bus, the PCI
bus, and the ISA bus).
❒ The PL/PCI bridge chip (SB82437FX-66) which also provides control
for the PCI bus, level-2 cache memory, and main memory.
❒ Two data path unit chips (SB82438FX) that provide a 64-bit data path
between the processor local bus and main memory modules.
❒ The PCI/ISA bridge chip (SB82371FB) which also provides control for
the IDE.
• Six SIMM sockets for EDO or FPM DRAM - up to 128 MB.
• Onboard video controller (S3 Trio64) offers full compatibility with VGA.
Note that one model (D4471A) uses a Matrox MGA Millennium video card
instead of the onboard video controller.
• Super I/O controller (SMC FDC37C932), driven from the ISA bus,
supports two serial ports and one bidirectional multi-mode parallel port.
It also provides control for two slow mass-storage devices (any suitable
combination of floppy disk and tape drives).
• Little-Ben chip which takes care of security features and power
management.
• 128-KB flash BIOS

59

3 System Board (P/Ns D3657-63001 and D3661-63001)
System Board Architecture

System Board Architecture
The following diagram shows the functional relationship between the
various components on the system board.

256 KB
Level-Two
Cache

Pentium
Processor

Local Bus

Intel
SB82437FX66 PL/PCI
Bridge

Memory
(8 MB 128 MB)

PCI Expansion Card
Slots

PCI Bus

Intel
SB82371FB
PCI/ISA
Bridge

S3 Trio 64
Video
Controller

IDE Controller Channel 1
IDE Controller Channel 2
ISA Bus

SMC FDC37C932
Super I/O
Controller

Keyboard
Mouse

FDD
Parallel
Serial 1
Serial 2

60

I/O Decode
Logic

Flash
Support

BIOS
Flash ROM
ISA Expansion
Card Slots

3 System Board (P/Ns D3657-63001 and D3661-63001)
System Board Physical Layout

System Board Physical Layout
The following diagram shows the physical layout of the system board.

*

* This video upgrade applies only to the models with integrated video controller.

61

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

Principal Components and Features
PCI Chipset
The PCI chipset consists of four chips that interface between the three main
buses (the processor’s local (PL) bus, the PCI bus, and the ISA bus):
• The PL/PCI bridge chip (SB82437FX-66) which also provides control for
the PCI bus, level-2 cache memory, and main memory.
• Two data path unit chips (SB82438FX) that provide a 64-bit data path
between the processor local bus and main memory modules.
• The PCI/ISA bridge chip (SB82371FB) also provides control for the IDE.

Host Bus

PCI Bus

ISA Bus

SB82438FX
Data Path Unit

Pentium
Processor

SB82371FB
PCI/ISA Bridge

SB82438FX
Data Path Unit

PCI
Master

Main
Memory
Level-Two
Cache

SB82437FX-66 PCI, Cache
and Memory Controller
Cache
Controller
Write
Buffer
PCI
Master

62

Main
Memory
Controller
PCI
Slave

ISA Bus
Controller

PCI
Slave

IDE
Controller

APIC

BIOS

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

PCI, Cache and Memory Controller (SB82437FX-66)
The SB82437FX-66 device integrates cache and memory control functions
and provides bus control functions for the transfer of information between
the microprocessor, cache, main memory and the PCI bus. The cache
controller supports the Pentium Cache Write-Back mode and 256 KB of
direct mapped, write-back level-two cache, using synchronous pipeline
burst SRAMs.

SB82437FX-66 Feature Summary
Function

Features

Cache controller

❒
❒
❒
❒
❒
❒

Write buffer

❒ Buffers all processor writes to main memory
❒ Buffers memory writes to PCI for selected memory regions
❒ Supports 3-1-1-11 write access timing

DRAM controller

❒
❒
❒
❒
❒
❒
❒
❒
❒
❒

PCI slave interface

Direct mapped organization
Buffered write-back
External cache tags
32-byte line size
Uses synchronous pipeline burst SRAM
Supports 3-1-1-11 burst reads

Uses dedicated DRAM memory address and data buses
Page mode - one or two pages open simultaneously
Supports pipelined accesses
Full RAS/CAS programmability
Flexible bank configurations (each bank programmable for
DRAM size, bank width and single or double-sided modules)
Self configuring bank start addresses
Shadow RAM support for the memory region 640 KB - 1 MB
(in 16-KB segments)
System management memory support
RAS only refresh
Fast memory access 7-2-2-21 with Extended Data Out (EDO)
memory

❒ Becomes processor (local) bus master to generate DRAM
requests on behalf of other PCI bus masters
❒ Supports PCI bus burst cycles
❒ Supports posted writes to DRAM for PCI burst writes
❒ Supports read-ahead from DRAM for PCI burst reads

63

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

Function

Features

PCI master interface

❒ Provides for programmable PCI bus memory regions in
memory address map
❒ Supports PCI bus burst cycles for 64-bit and 32-bit misaligned
Pentium reads and writes
❒ Optional posting of PCI memory and I/O writes
❒ Optional buffering of PCI memory writes
❒ Optional read-ahead for processor to PCI accesses

PCI bus arbiter

❒ Supports PCI bus arbitration for up to four masters
❒ Supports rotating priority scheme

1.The

Pentium’s internal cache has a 32-byte line size, which is four times the width of the Pentium’s host data bus. Burst reads and writes by the Pentium involve a full cache line, and so require four back-to-back cycles to complete. The first cycle in each burst of four always requires
more time to complete than the three subsequent cycles. This is because the first cycle includes
the addressing phase and precharge timing (for memory).

Data Path Unit (SB82438FX)
The SB82438FX component contains a 64-bit data path between the host
bus and main memory. A 4×64-bit deep buffer provides 3-1-1-1 writes to
main memory.
This buffer is used for:
• writes from processor to main memory
• level-two cache write-back cycles
• transfers from PCI to main memory.

64

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

The PCI/ISA Bridge and IDE Controller (SB82371FB)
The SB82371FB device serves as a bridge between the PCI bus and the ISA
expansion bus, and incorporates a two-channel PCI IDE controller. It
incorporates the logic for a PCI interface, a DMA interface, a DMA controller
that supports fast DMA transfers, data buffers to isolate the PCI and ISA
buses, Timer/Counter logic, and NMI control logic.
The SB82371FB PCI/ISA bridge also provides decode for the following
peripheral devices:
•
•
•
•
•
•
•

Flash BIOS
Real Time Clock/CMOS Memory
Keyboard/Mouse Controller
Floppy Disk Controller
Two Serial Ports
One Parallel Port
PCI Expansion Card Slots.

The SB82438FX and SB82371FB Feature Summary
Function

Features

Data buffer
(for SB82438FX and SB82371FB
together)

❒ Provides a high performance 64-bit data path between the
processor (local) bus and main memory
❒ Provides a 32-bit data path to the PCI bus
❒ Provides a 8-deep x 64-bits wide write buffer for all processor
writes to main memory
❒ Provides a one-level posted write buffer for all processor
writes to PCI bus memory

PCI master / slave interface
(for SB82371FB only)

❒ Fully compatible with PCI specification
❒ Supports PCI-to-ISA / ISA-to-PCI bus master cycle translations
❒ Supports programmable memory regions to provide fast
positive decode for PCI master accesses
❒ Implements subtractive decoding for unclaimed PCI cycles
❒ Supports PCI-to-ISA posted memory writes
❒ Translates DMA transfers for PCI slaves
❒ Supports PCI address/data parity generation and checking

65

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

Function

Features

ISA bus controller
(for SB82371FB only)

❒ Fully compatible with ISA bus standard
❒ Supports asynchronous ISA bus operation up to 16 MHz
❒ Integrates:
❒ two 82C37A DMA controllers
❒ two 82C59A interrupt controllers
❒ 82C54 timer
❒ hidden ISA refresh controller
❒ support for BIOS
❒ port A, B and NMI logic

Fast IDE controller
(for SB82371FB only)

❒
❒
❒
❒

Supports PIO and Bus Master IDE
Supports up to Mode 4 timings
Up to 22 MB/s transfer rate
8×32-bit buffer for Bus Master IDE PCI burst transfers

System Board Configuration Switches
The system board configuration switches are used to configure certain
aspects of the computer.

Example of system board
switch settings

OPEN

The system board switches used for configuring the PC are summarized in
the following table.

66

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

Switch

Setting

1-4

-

Switch Functions

Default
Setting

Selects system board speed settings, refer to “Bus Frequencies” on page 72.

Open

Enables User and Administrator passwords.

Closed

Clears User and Administrator passwords.

Open

CMOS memory acts as a non-volatile store for the Setup program..

Closed

Clears the Setup configuration data in the CMOS memory.

Open

5
Open

6
Selects system board speed settings, refer to “Bus Frequencies” on page 72.

7

8

9

Open

Disables secure mode.

Closed

Sets the security mode. Sets the switch to the closed position to prevent the
BIOS from being upgraded and to disable writing to disks.

Open

Disables space-bar power-on. This setting overrides the setting in the Setup
program.

Closed

Enables space-bar power-on. If you want to enable this feature, set this switch
to Closed. This setting overrides the setting in the Setup program.

10

Open

Open

Not used.

Processor Socket
The microprocessor is packaged in a pin-grid-array (PGA), which is seated on
the system board in a Zero-Insertion-Force (ZIF) socket.

VRM Socket
P54CS (133 150 and 200 MHz) Pentium processors require a 3.3V supply. Since
the PC has a regulated 3.3 V output, a shorting block is used to connect the
output directly to the processor.
The P54C 166 MHz Pentium processor requires slightly more than 3.3 V and
therefore needs an active VRE voltage regulator module (VRM), in which the
voltage is derived from both the 3.3 V and 5 V outlets of the power supply.

Main Memory Sockets
There are six main memory module sockets, arranged in three banks (A to C),
allowing installation of up to 128 MB DRAM.

67

3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

Advanced Power Management (APM)
The Advanced Power Management (APM) is a standard, defined by Intel
and Microsoft, for a power-saving mode that is applicable under a wide
range of operating systems. The version APM 1.1 supports the following
modes: Fully-on, Standby, Suspend, and Off.
The Suspend mode, which also used to be known as Sleep, is now managed
at the operating system level only. There is no longer the inter-activity
between BIOS Setup and operating systems, and no longer a “sleep at” item
in the Setup menus. This is to avoid the BIOS from shutting down the
system at the wrong moment.

HP Vectra 500 Series Desktop Backplane
The HP Vectra 500 Series desktop backplane supports two 16-bit ISA
(Industry Standard Architecture) cards, one 32-bit PCI (Peripheral
Component Interconnect) card and has one combination slot for an ISA or
PCI card.

1 x PCI

Slot 1

1 x ISA/PCI
Combination Slot

Slot 2
Slot 3

2 x ISA
Slot 4
System Board
Connector

The four expansion card slots are arranged as follows:
• Slot 1 - (the top slot) can be used for a 32-bit PCI card.
• Slot 2 - a combination slot that can be used for a 32-bit PCI card or a fulllength 16-bit ISA card (up to 30 cm / 12 inches).
• Slot 3 - can be used for a full-length 16-bit ISA card.
• Slot 4 - can be used for a half-length 16-bit ISA card
(up to 15 cm / 6 inches).

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features

HP Vectra 500 Series Minitower Backplane
The HP Vectra 500 Series minitower backplane supports three 16-bit ISA
(Industry Standard Architecture) cards, two 32-bit PCI (Peripheral
Component Interconnect) cards and has one combination slot for an ISA or
PCI card.

Slot 6
Slot 5

3 x ISA

Slot 4
Slot 3
2 x PCI
Slot 2
1 x ISA/PCI
Combination Slot

Slot 1

System Board
Connector

The six expansion card slots are arranged as follows:
• Slot 1 - (the innermost) a combination slot that can be used for a
half-length 16-bit ISA card (up to 15 cm / 6 inches) or a 32-bit PCI card .
• Slot 2 - can be used for a 32-bit PCI card.
• Slot 3 - can be used for a 32-bit PCI card.
• Slot 4 - can be used for a full length 16-bit ISA card
(up to 30 cm / 12 inches).
• Slot 5 - can be used for a full length 16-bit ISA card.
• Slot 6 - can be used for a full length 16-bit ISA card.

69

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the Processor Local Bus

Devices on the Processor Local Bus
The following subsystems are associated with the Processor Local bus:
• Intel Pentium microprocessor
• cache memory
• main memory

Pentium Processor
The Pentium processor uses a 64-bit bus, and is 100% compatible with
Intel’s family of x86 processors. All application software that has been
written for Intel 80386 and Intel 80486 processors can run on the Pentium
without modification. The Pentium processor contains all the features of the
Intel 80486 processor, with the following added features which enhance
performance:
• Superscalar Architecture
• Floating Point Unit
• Dynamic Branch Prediction
• Instruction and Data cache
• Data Integrity
• Ability to support MultiProcessor Specification (MPS) 1.1
• PCI bus architecture
• Advanced Power Management capability for reducing power consumption
The processor is seated in a Zero Insertion Force (ZIF) socket.

Superscalar Architecture
The Pentium processor’s superscalar architecture has two instruction
pipelines and a floating-point unit, each capable of independent operation.
The two pipelines allow the Pentium to execute two integer instructions in
parallel, in a single clock cycle. This is called instruction pairing. Each
instruction must be simple. One pipeline will always receive the next
sequential instruction of the one issued to the other pipeline.

70

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the Processor Local Bus

Using the pipelines halves the instruction execution time and almost
doubles the performance of the processor, compared with an Intel486
microprocessor of the same frequency.

Floating Point Unit (FPU)
The Floating Point Unit incorporates optimized algorithms and dedicated
hardware for multiply, divide, and add functions. This increases the
processing speed of common operations by a factor of three.

Dynamic Branch Prediction
The Pentium processor uses dynamic branch prediction. To dynamically
predict instruction branches, the processor uses two prefetch buffers. One
buffer is used to prefetch instruction code in a linear way, and the other to
prefetch instruction code depending on the contents of the Branch Target
Buffer (BTB). The BTB is a small cache which keeps a record of the last
instruction and address used. It uses this information to predict the way that
the instruction will branch the next time it is used. When it has made a
correct prediction, the branch is executed without delay, thereby enhancing
performance.

Instruction and Data Cache
The Pentium processor has separate on-chip code and data caches. Each
cache is 8 KB in size with a 32-bit line. The cache acts as temporary storage
for data and instructions from the main memory. As the system is likely to
use the same data several times, it is faster to get it from the on-chip cache
than from the main memory.
Each cache has a dedicated Translation Lookaside Buffer (TLB). The TLB is
a cache of the most recently accessed memory pages. The data cache is
configured to be Write-Back on a line-by-line basis (a line is an area of
memory of a fixed size).
The data cache tags (directory entries used to reference cached memory
pages) are triple-ported to support two data transfers and an inquire cycle
in the same clock cycle. The code cache tags are also triple-ported to
support snooping (a way of tracking accesses to main memory by other
devices) and split line accesses.

71

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the Processor Local Bus

Individual pages of memory can be configured as cacheable or noncacheable by software or hardware. They can also be enabled and disabled
by hardware or software.

Data Integrity
The processor uses a number of techniques to maintain data integrity. It
employs two methods of error detection:
• Data Parity Checking
This is supported on a byte-by-byte basis, generating parity bits for data
addresses sent out of the microprocessor. These parity bits are not used
by the external subsystems.
• Internally
The processor uses functional redundancy checking to provide maximum
error detection of the processor and its interface.

Bus Frequencies
The Pentium processor uses internal clock multiplication. For example, a
150 MHz processor multiplies the 60 MHz system clock by 2.5.
Switches 1 and 2 set the frequency of the Processor-Local bus.
Switches 3 and 4 set the clock multiplier ratio (system clock : local bus).
Switch 7 sets the ISA bus speed.
If a processor upgrade is installed, the switch settings may need to be
changed to adapt to the new processor. The following table shows the
settings required for the different processors.
Switch

Switch

1

2

ProcessorLocal Bus
Frequency

Open

Closed

Closed

7

Frequency
Ratio
(Processor:
Local Bus)

Open

Closed

1.5

100 MHz

Closed

Open

Closed

2

120 MHz

66 MHz

Closed

Open

Closed

2

133 MHz

60 MHz

Closed

Closed

Closed

2.5

150 MHz

3

4

66 MHz

Open

Open

60 MHz

Open

Closed

Closed

Open

72

Processor
Frequency

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the Processor Local Bus

Switch

Switch

1

2

ProcessorLocal Bus
Frequency

Open

Closed

66 MHz

Closed

Open

Open

Closed

4

7

Frequency
Ratio
(Processor:
Local Bus)

Closed

Closed

Closed

2.5

166 MHz

60 MHz

Open

Closed

Closed

3.0

180 MHz

66 MHz

Open

Closed

Closed

3.0

200 MHz

3

Processor
Frequency

The computer will execute erratically, if at all, if the configuration switches
are set to operate at a higher processor speed than the processor is capable
of supporting. This may cause damage to the PC.
Setting the switches to operate at a slower speed than the processor is
capable of supporting would not cause any failure of operation but would
cause instructions to be executed more slowly than they should be.

Cache Memory
The PC allows for the provision of two levels of cache memory:
• Level-one cache memory which is fabricated by Intel in the Pentium
processor chip
• Level-two cache memory is optionally installed as a memory module on
the system board
Each acts as temporary storage for data and instructions from the main
memory. Since the system is likely to use the same data several times, it is
faster to get it from the on-chip level-one cache than from the main memory.
The level-two cache memory, when fitted, has a 32-byte line size (a line is an
area of memory of a fixed size). It is controlled by the PL/PCI bridge chip
(SB82437FX). A single HP cache memory module consists of 256 KB of
direct mapped, synchronous or asynchronous, static random access memory
(SRAM). The synchronous cache memory module achieves 10% better
performance than the asynchronous module.

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the Processor Local Bus

Main Memory
There are six main memory module sockets on the system board, enabling
up to 128 MB of main memory to be installed. The sockets are arranged in
three banks (A to C). Memory modules must be installed in pairs which are
the same size to ensure that all the memory is configured correctly.
Fast memory access, with the timing pattern 7-2-2-2, is achieved by
installing EDO RAM. The PC supports 60 ns EDO or 70 ns FPM DRAM.
The PL/PCI bridge chip (SB82437FX-66) provides the dedicated DRAM
memory address and data buses. It implements a page mode of operation,
allowing one or two pages to be open simultaneously.
The two data path unit chips (SB82438FX), controlled by the PL/PCI bridge
chip, implement a 64-bit data path (not interleaved) between the processor
local bus and main memory modules. They also provide a buffer, four 64-bit
words in depth, which can be used for writes from processor to main
memory, level-2 cache write-back cycles, and transfers from PCI to main
memory. It also provides a one-level posted write buffer for all processor
writes to the PCI bus memory.

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the PCI Bus

Devices on the PCI Bus
The PL/PCI bridge is implemented within the Intel SB82437FX-66 chip (see
page 63). It is responsible for transferring data between the Processor-Local
bus and the PCI bus.
As a PCI bus slave, this chip becomes the PL bus master, to generate DRAM
requests on behalf of other PCI bus masters. It supports PCI bus burst
cycles, posted writes to DRAM for PCI burst writes, and read-ahead from
DRAM for PCI burst reads.
As a PCI bus master, this chip provides for programmable PCI bus memory
regions in the memory address map, and supports PCI bus burst cycles for
64-bit and 32-bit misaligned Pentium reads and writes. It provides optional
posting of PCI memory and I/O writes, optional buffering of PCI memory
writes, and optional read-ahead for processor to PCI accesses.
As the PCI bus arbiter, it can handle up to four masters, using a rotating
priority scheme.
The PCI bus handles the following peripheral devices:
• video controller
• IDE controller
• other devices in the PCI accessory slots.

Video Controller
Depending on the model, the PC uses one of the following:
•

An integrated 32/64-bit Ultra VGA controller on the PCI bus, with 1 MB of
video memory. Memory can be increased to 2 MB by installing two 512 KB
modules.

•

A Matrox MGA Millennium card with 2 MB of video memory that can be
increased to 4 MB or 8 MB. The Matrox MGA Millennium video card is
installed in one of the PCI slots on the backplane. For a full description of
the Matrox MGA Millennium video card, refer to “Matrox MGA Millennium
Video Controller Card” on page 127.

75

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the PCI Bus

S3 Trio 64PnP Video Controller
The integrated video subsystem consists of a PCI bus video controller and a
DRAM array. The PC uses the S3 Trio 64 PnP video controller. This video
controller embeds a RAMDAC, and supports video resolutions of up to 1280
x 1024. The S3 Trio 64PnP video controller offers full compatibility with
VGA. In addition, the features are enhanced beyond Super VGA by
hardware which accelerates graphical user interface operation in
Windows 95.
The enhanced features include:
• Direct connectivity to PCI bus.
• True acceleration for 8, 16 and 32-bit pixel depths.
• 57 MHz clock for video memory.
• Fully programmable Pixel Clock Generator up to 135 MHz.
• Availability to support 2 MB DRAM.
• Fast linear addressing with full software relocation.

Video DRAM
The HP Vectra 500 Series PC is supplied with 1 MB of video DRAM. An
additional 1 MB of video DRAM can be installed. The upgrade consists of
two 512 KB video memory chips.

Video Resolutions Supported
For a full list of the different video resolutions available, refer to “S3 Trio 64
Video Modes” on page 121, for a table containing all the supported video
resolutions.

Integrated Drive Electronics (IDE) Controller
The IDE controller is implemented as part of the PCI/ISA bridge chip (see
page 65). It supports Enhanced IDE (EIDE) and Standard IDE (Bus Master
IDE). To use the Enhanced IDE features, however, hard disk drives must be
compliant with Enhanced IDE.
Up to four IDE devices can be supported: two connected to the primary
channel cable, and two to the secondary channel cable. For minitower
models, the primary and secondary channels are both fitted with IDE cables

76

3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the PCI Bus

with two connectors. For desktop models, the primary channel cable is
fitted with two connectors, and the secondary channel cable is fitted with
one connector.
With EIDE, it is possible to have a fast device, such as a hard disk drive, and
a slow device, such as a CD-ROM drive, on the same channel without
affecting the performance of the fast device. However, in general, the
primary channel cable is recommended for hard disk drives, and the
secondary channel cable for CD-ROM drives. Indeed, if a CD-ROM is placed
on the same channel as a hard disk drive, problems could be experienced
activating the 32-bit access drivers.

Other PCI Accessory Devices
PCI expansion cards (accessory boards) are used for high-speed peripheral
accessories. Up to three PCI cards can be installed in minitower models, and
up to two PCI cards can be installed in desktop models.

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the ISA Bus

Devices on the ISA Bus
ThePCI/ISA Bridge chip (also known as PIIX, or as the system I/O chip, SIOA) is an Intel SB82371FB. It is responsible for transferring data between the
PCI bus and the ISA expansion bus.
As the ISA bus controller, the chip supports asynchronous ISA bus operation
up to 16 MHz. It integrates: two DMA controllers, two interrupt controllers,
a timer, a hidden ISA refresh controller, support for the BIOS, data buffers
to isolate the PCI and ISA buses, and NMI control logic. It also contains the
two-channel PCI IDE controller (which is described on page 76).
The ISA bus handles the following devices:
• Super I/O controller.
• Serial EEPROM.
• System ROM.
• Other ISA accessory devices.

Super I/O Chip (SMC FDC37C932)
The basic input/output control functions are provided by the Super I/O chip,
the SMC FDC37C932. This chip is 100% compatible with ISA architecture
and contains the following:
•
•
•
•

Serial / parallel communications ports.
Flexible drive controller (FDC).
Keyboard and mouse controller.
Real time clock (RTC) and CMOS memory.

Serial/Parallel Communications Ports
The Super I/O chip supports two serial ports and one bidirectional parallel
port. The serial ports are high-speed UARTs with 16-Byte FIFOs, and can be
programmed as COM1, COM2, COM3, COM4, or disabled.
The parallel port can operate in four modes:
• Standard mode (PC/XT, PC/AT, and PS/2 compatible)

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the ISA Bus

• Bidirectional mode (PC/XT, PC/AT, and PS/2 compatible)
• Enhanced mode (Enhanced Parallel Port or EPP compatible)
• High speed mode (MS/HP Extended Capabilities Port or ECP
compatible).
It can be programmed as LPT1 (378h, IRQ7), LPT2 (278h, IRQ5), or
disabled.

Floppy Drive Controller (FDC)
The integrated Floppy Drive Controller (FDC) supports 3.5-inch and 5.25inch floppy disk drives, and tape drives. It is software and register
compatible with the 82077AA, and 100% IBM compatible. It has an A and B
drive-swapping capability and a non-burst DMA option.

Keyboard and Mouse Controller
The PC has an 8042-based keyboard and mouse controller (the socket pin
layouts are as shown on page 24). The C3758A keyboard is supplied for use
with the Windows 95 operating system (though it will also work with other
operating systems). It has the following capabilities:
• Space-bar power-on, to start the computer from the Off state (if power on
from keyboard is enabled in the Setup program).
• Windows key (next to the
keys), which has the same effect as
clicking the Start button on the Windows 95 task bar.
• Pull-down key (next to the right
as clicking the right mouse button.

key), which has the same effect

Real-Time Clock (RTC)
The real-time clock (RTC) is 146818A-compatible. The configuration RAM
is implemented as 256 bytes of CMOS memory.

Serial EEPROM
This is non-volatile memory which holds the default values for the CMOS
memory (in the event of battery failure, or the user pressing
in Setup).

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3 System Board (P/Ns D3657-63001 and D3661-63001)
Devices on the ISA Bus

System ROM
The PC uses 128 KB of 200 ns, Flash EEPROM implemented within a single
256 K X 8-bit ROM chip. This is a ROM that can be returned to its
unprogrammed state, by the application of appropriate electrical signals to
its pins, and then reprogrammed with the latest upgrade firmware.
The System ROM contains the system BIOS (including the boot code, the
ISA and PCI initialization, RPO, DMI, the Setup program and the Power-On
Self-Test routines, plus their error messages).
Refer to chapter 4, Summary of the HP/Phoenix BIOS, for more information
on the BIOS.

Other ISA Accessory Devices
ISA expansion cards (accessory boards) are for slow peripheral accessories.
For minitower models, there are four slots on the ISA bus for expansion
cards (although one of these is a combination slot with the PCI bus). For
desktop models, there are three slots on the ISA bus for expansion cards
(although one of these is a combination slot with the PCI bus).

80

4

Summary of the HP/Phoenix BIOS
This chapter gives an overview of the two different versions of the
HP/Phoenix BIOS installed on the HP Vectra 500 Series PC models.

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4 Summary of the HP/Phoenix BIOS
Overview

Overview
The information concerning the different versions of the HP/Phoenix BIOS
installed on the HP Vectra 500 Series models described in this chapter is
divided into two main sections:
• The system BIOS identified by the version number GX.07.xx, installed on
the HP Vectra 500 Series PC models with an HP Service Part Number:
D4051-63001. For a complete list of the computers associated with this
part number, refer to “D4051-63001 Models” on page 15.
• The system BIOS identified by the version number GJ.07.xx installed on
the HP Vectra 500 Series PC models with the HP Service Part Numbers:
D3657-63001 and D3661-63001. For a complete list of the computers
associated with these part numbers, refer to “D3657-63001 Models” on
page 16 and “D3661-63001 Model” on page 17.

HP/Phoenix BIOS Description
The System ROM contains the system BIOS (including the boot code, the
ISA and PCI initialization, DMI, the Setup program and the Power-On SelfTest routines, plus their error messages).
The PC uses 128 KB of 200ns, Flash EEPROM implemented within a single
256 K ✕ 8-bit ROM chip. This is a ROM that can be returned to its
unprogrammed state, by the application of appropriate electrical signals to
its pins, and then reprogrammed with the latest upgrade firmware.

Updating the System ROM
The System ROM can be updated with the latest BIOS firmware. It can be
ordered from HP or downloaded from one of the HP online services.
The System ROM is updated by running the PHLASH utility, PHLASH.EXE,
which is supplied with the BIOS upgrade file, NN07xx.FUL, and the system
definition file, platform.bin. You must specify the model number of the
PC since the utility which is supplied for a different model cannot be used
with this one. It must be run from a diskette.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS Description

Before flashing, it is necessary to disable the “Secure Mode” switch on the
system switches, and to type in the System Administrator Password when
starting up the computer. The PCI and PnP information is erased in the
process.
Do not switch off the computer until the system BIOS update procedure has
completed, successfully or not, since irrecoverable damage to the ROM may
otherwise be caused. While updating the flash ROM, the power supply
switch and the reset button are disabled to prevent accidental interruption
of the flash programming process.
When installing a new system board, the ROM will have a blank serial
number field. This will be detected automatically by the BIOS. Depending on
the type of system board, you may or may not be prompted to enter the
serial number. The serial number is printed on the identification label on the
back of the PC.

Error Diagnostics and Suggested Corrective Actions
The programs and data in the system ROM are accompanied by a check-sum
code. If any of the programs or data ever become corrupted, the check-sum
will not correspond with the contents of the ROM, and the appropriate part
of the POST routine will attempt to report the error:
Cannot display error messages
Flash ROM may be defective

The suggested corrective action is to reprogram the system ROM by running
the same utility as is normally used for upgrading it.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS Description

Little Ben
Little Ben is an HP application specific integrated circuit (ASIC) that is
connected between the chipset and the processor. It has been designed to
act as a companion to the Super I/O chip. It contains the following:
• Hard and soft power control.
• BIOS timer:
hardware-wired, 50 ms long 80 Hz beep module;
automatic blinker that feeds the LEDs module with a 1 Hz oscillator
signal.
• Flash access and protection (supporting 128, 256 or 512 ROMs).
• Super I/O protection.
• Glue logic:
Support for SMIs (for Intel’s SMM mode). Enhanced keyboard lock and
external wake-up;
IRQ generator controlled by software;
SMI generator controlled by software;
Programmable chip selects.
• 16-bit address decoding and remapping.
• Four general purpose I/O (Input/Output).
Little Ben is powered by battery, so its consumption has to be as low as
possible. When VccState and PowerGood pins are both low, all output pins
are in tri-state mode, except for RemoteOnBen which continues to be
driven. This allows the PC to be restarted even after a power loss has
occurred.
If the BIOS needs to turn off the PC, it must ensure that the PC is not locked
by Little Ben’s lock bit. If it is, the power remains on, a red light is
illuminated, and a buzzer is activated.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

HP/Phoenix BIOS (BIOS version: GX.07.xx)
This section gives an overview of the HP/Phoenix BIOS identified by the
BIOS version: GX.07.xx associated with the HP Vectra 500 Series models,
HP Service Part Number D4051-63001.
The information in this section includes the following:
•

Setup Program: with menu-driven context-sensitive help
(in U.S. English only).

• I/O Addresses Used by the System: the address space, with details of the
interrupts used, described in the section I/O Addresses Used by the
System (BIOS version: GX.07.xx), on page 90.
• The Power-On Self-Test or POST, which is the sequence of tests the PC
performs to ensure that the system is functioning correctly, described in
the section Power-On Self-Test (BIOS version: GX.07.xx), on page 94.

Setup Program (BIOS version: GX.07.xx)
You can interrupt the POST to run the Setup program by pressing
the F2=Setup message appears on the initial “Vectra” logo screen.

when

The band along the top of the screen offers five menus: Main, Configuration,
Security, Power, and Exit. To select one of these, simply move to the
appropriate name, using the left and right arrow keys. Each menu is
discussed below.

Main Menu (BIOS version: GX.07.xx)
The Main Menu presents the user with a list of fields, such as “System Time”
and “Key click”. These can be selected using the up and down arrow keys,
and can have their values changed using the
and
keys.
The “Item-Specific Help” field changes automatically as the user moves the
cursor between the fields. It tells the user what the currently highlighted
field is for, and what the options are.
Some fields are not changeable. Examples include fields that are for
information only, and fields whose contents become “frozen” by the setting
of a value in some other field. Such fields are displayed in a different color,
without the “[” and “]” brackets. When the user moves the cursor with the up
and down arrow keys, such fields are skipped.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

Some fields disappear completely when a choice in another field makes their
appearance inappropriate (for example, the “Key auto-repeat speed” and
“Delay before auto-repeat” fields disappear when the user selects Yes in the
“Running Windows 95” field, since these parameters can then be set within
the operating system).

Configuration Menu (BIOS version: GX.07.xx)
The Configuration Menu does not have the same structure as the Main Menu
and Power Menu. Instead of presenting a list of fields, it offers the user a list
of sub-menus. Again, the user steps between the options using the up and
down arrow keys, but presses the
key to enter the chosen submenu (and the
key to go back again when finished).
If access to devices has been disabled in the Security Menu, then the
configuration of those devices on the Configuration Menu becomes frozen,
as shown in the diagram below for Serial port A. The field becomes starred,
appears in a different color and cannot be changed.
Phoenix BIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd.
Copyright 1995 Hewlett-Packard Rev. GX.07.xx

Configuration
Integrated I/O Ports
Paral l el p o rt
P a ra l l e l p o rt m ode

[3 7 8 h I RQ7 ]
[Centronix TM]

Serial Port A
Serial Port B

* 3F8h IRQ4
[Disabled]

Item-Specific Help
Enables or disables the
on-board parallel port
at t he spe cific addr ess.
‘Disabled’ frees
resources used by the
port.

[*] = The device is disabled for security reasons.
To enable it, use the Security/Hardware Protection
menu.

Help

á â

Select Item

F7/F8 Change Values

ESC Exit

ß à

Select Menu

Enter Select > Sub-Menu

F1

86

F9 Setup Defaults
F10 Previous Values

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

Disabling a device in the Configuration Menu (for example, Serial port B in
the diagram above) has the advantage of freeing the resources (such as
IRQs and peripheral addresses). Disabling a device in the Security Menu
disables the access, does not free the resources, but has the advantage of
temporarily disabling the device without losing the configuration settings.
Under the “Memory and Cache” sub-menu, memory caching can be set to
internal only, disabled or both; the memory hole can be enabled
between 15 MB and 16 MB1; the graphic POST can be disabled if there is a
Display Option ROM installed; the shadow/cache ISA option ROMs can be
made accessible if detected as being fitted.
Under the “IDE” sub-menu, multi-sector transfers can be disabled, or set
to 2, 4, 8, or 16; the translation method can be set to extended or
standard; the integrated bus adapters can be set to none, primary=IRQ15,
secondary=IRQ14, or both.

Security Menu (BIOS version: GX.07.xx)
Sub-menus are presented for changing the characteristics and values of the
User Password, the System Administrator Password, the amount of
protection against use of the system’s drives and network connections
(using the Hardware Protection sub-menu), and the amount of protection
against being able to boot from the system’s drives and network connections
(using the Start-Up Centre sub-menu).
The minimum lengths of either type of password can be set to a specific
number of characters, or to none. The maximum length of each is
32 characters. A limit can be set for the maximum number of retries that are
permitted if the password is mistyped, and whether a delay should be
imposed (of successively increasing lengths: 4 seconds, 8 seconds,
16 seconds, and finally 32 seconds) before successive retries are accepted
(using the exponential setting for the “Lock Time Between Attempts”
field).
The “User Password” sub-menu grants access to the keyboard lock timer
option. Once this password has been set, the menu gives access to the main
sub-menu of user preferences.
Under the “Hardware Protection” sub-menu, the following devices can have
their access unlocked/locked: flexible disk controller, IDE controllers,
serial and parallel ports, network controller. Writes to the flexible disk can

1.

available only if ≥ 16 MB.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

be locked, so as to prevent the exporting of data. Writes to the hard disk
drive boot sector can also be locked, for instance as a protection against
viruses.
Under the “Start-Up Center” sub-menu, the Setup program not only allows
the user to select which devices are to be used (yes or no) for booting up
the system, but also indicates their order of precedence when more than one
is enabled: flexible disk drive, CD-ROM drive, or hard disk drive.

Power Menu (BIOS version: GX.07.xx)
The “Power” menu allows the user to set the standby delay. It also allows the
system administrator to decide whether the mouse is enabled as a means of
reactivating the system from Standby. It is also possible to specify whether
the space-bar is enabled as a means of reactivating the system from Off.

Summary Configuration Screen (BIOS version: GX.07.xx)
You can press
while the initial “Vectra” logo screen is being displayed to
run the Setup program (as described in the previous sub-sections).
Alternatively, you can press
to view the summary configuration screen,
an example of which is depicted on the next page. By default, this remains
on the screen for 20 seconds, but by pressing
once, it can be held on the
screen until
is pressed again, or until
is pressed. Pressing
will
cause the PC to be turned off.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

The following summary screen is an example of a system configuration.

HP Vectra VE5/100 Series 3 — Copyright 1995 Hewlett-Packard — QA.01.00

Any line of text can be entered here as a ‘tatoo’ for the PC

BIOS Version

: GX.07.xx

PC Serial Number

: 0000A00000

CPU Date Code

: N/A

System RAM

: 15 MB

COM1

: 3F8H (Serial A)

Bank A

: 8 MB (EDO)

COM2

: 2F8H (Serial B)

Bank B

: 8MB (EDO)

COM3

: 3E8H (external)

Bank C

: None

COM4

: None

Video RAM

: 1 MB

LPT1

: 378H

System Cache

: 256 KB
(synchronous)

LPT2

: None

Video Device

: SiS

LPT3

: None

1st IDE Device

: HDD 1279 MB

Flexible Disk A

: 1.44 MB

2nd IDE Device

: None

Flexible Disk B

: None

3rd IDE Device

: None

Display type

: Not Available

4th IDE Device

: None

ISA PnP

: AZT3001 PnP Sound Device

PCI Slot

: Not Installed

ISA PnP

: Not Installed

PCI Slot

: Not Installed

ISA PnP

: Not Installed

PCI Slot

: Not Installed

ISA PnP

: Not Installed

 to continue,  to run SETUP,  to power off,  to retain

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

I/O Addresses Used by the System (BIOS version: GX.07.xx)
Peripheral devices, accessory devices and system controllers are accessed
via the system I/O space. The 64 KB of addressable I/O space comprises 8-bit
and 16-bit I/O ports (these are registers that are located in the various
system components). When installing an expansion card, ensure that the
I/O address space selected is in the free area of the space reserved for
expansion cards (100h to 3FFh).
100h-109h
15Ch-15Dh
170h-177h, 376h
1F0h-1F7h, 3F6h
278h-27Fh, 378h-37Fh
2E8h-2EFh, 2F8h-2FFh, 3E8h-3EFh, 3F8h-3FFh
370h-371h
3B0h-3DFh
3F0h-3F5h, 3F7h
496h-497h
678h-67Bh
778h-77Bh

HP reserved
I/O controller
IDE controller secondary channel
IDE controller primary channel
Parallel port
Serial port
Integrated I/O Controller
Integrated video graphics controller
Integrated floppy disk drive controller
HP reserved
Parallel port if ECP mode is selected
Parallel port if ECP mode is selected

Refer to the BIOS I/O Port Map (BIOS version: GX.07.xx), on page 91 for
more detailed information.

System Memory Map (BIOS version: GX.07.xx)
00000h - 9FFFFh
A0000h - BFFFFh
C0000h - C7FFFh
C8000h - DFFFFh
E0000h - EFFFFh
F0000h - FFFFFh
100000h - FFFFFFFFh

640 KB–Base Memory Area
128 KB–Video Memory
32 KB–Video BIOS
96 KB–Expansion Cards Memory
64 KB–Available
64 KB–System BIOS
1 MB plus–Extended Memory

Reserved memory used by expansion cards must be located in the area from
C8000h to EFFFFh.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

BIOS I/O Port Map (BIOS version: GX.07.xx)
This section describes the HP BIOS port map. The next section provides
more details about how the BIOS uses the system board components
mentioned in the I/O port list.
I/O Address Ports

Function

Bits

0000-000F

DMA controller 1

8

0020-0021

Interrupt controller 1

8

0040-0043

Interval timer 1

8

0060, 0064

Keyboard controller

8

0061

NMI status and control

8

0070

NMI mask register, RTC address

8

0071

RTC data

8

0081-0083, 008F

DMA low page register

8

0092

Alternate reset and A20 Function

8

00A0-00A1

Interrupt controller 2

8

00C0-00DF

DMA controller 2

8

00F0-00FF

Co-processor error

0100-0109

HP reserved

015C-015D

I/O Controller

0170-0177

IDE controller secondary channel

01F0-01F7

IDE controller primary channel

0278-027F

Parallel port 3

02E8-02EF

Serial Port 4

02F8-02FF

Serial Port 2

0370-0375

Secondary floppy disk controller

0376

IDE controller secondary channel

0377

Secondary floppy disk controller

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

I/O Address Ports

Function

0378-037F

Parallel port 2

03B0-03BB

Integrated video graphics controller

03BC--03BF

Parallel port 1

03C0-03DF

Integrated video graphics controller

03E8-03EF

Serial port 3

03F0-03F5

Floppy disk controller

03F6

IDE controller primary channel

03F7

Floppy disk controller

03F8-03FF

Serial port 1

0496-0497

Internal ports (or HP reserved)

0CF8-0CFF

Used for PCI configuration1

1.These

Bits

addresses are dedicated to configuration registers for PCI devices.

System Board Components (BIOS version: GX.07.xx)
This section provides more details of how the BIOS uses the system board
components mentioned in the I/O port list.

DMA Channel Controllers (BIOS version: GX.07.xx)
Only “I/O-to-memory” and “memory-to-I/O” transfers are allowed.
“I/O-to-I/O” and “memory-to-memory” transfers are disallowed by the
hardware configuration.
The system controller supports seven DMA channels, each with a page
register used to extend the addressing range of the channel to 16 MB.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

The following table summarizes how the DMA channels are allocated.
First DMA controller (used for 8-bit transfers)
Channel
0
1
2
3

Function
Available
Available or ECP mode for parallel port
Flexible disk I/O
Available or ECP mode for parallel port

Second DMA controller (used for 16-bit transfers)
Channel
4
5-6
6-7

Function
Cascade from first DMA controller
Available
Available

Interrupt Controllers
(BIOS version: GX.07.xx)
The system has two 8259A compatible interrupt controllers. They are
arranged as a master interrupt controller and a slave that is cascaded
through the master.
The following table shows how the master and slave controllers are
connected. As the HP Vectra 500 Series incorporates the Plug and Play
mode, some of the IRQ settings indicated in the following table could be
different. This table should be used as a guideline only. The Interrupt
Requests (IRQ) are numbered sequentially, starting with the master
controller, and followed by the slave.
IRQ (Interrupt Vector)
IRQ0(08h)
IRQ1(09h)
IRQ2(0Ah)

Slave IRQ
IRQ8(70h)
IRQ9(71h)
IRQ10(72h)
IRQ11(73h)
IRQ12(74h)
IRQ13(75h)
IRQ14(76h)

Interrupt Request Description
System timer
Keyboard controller
Cascade connection from INTC2 (Interrupt Controller 2)
Real time clock
Available for PCI expansion cards, if not used by ISA boards
Available for PCI expansion cards, if not used by ISA boards
Available for PCI expansion cards, if not used by ISA boards
Mouse
Pentium
Primary channel of IDE controller

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IRQ15(77h)
IRQ3(0Bh)
IRQ4(0Ch)
IRQ5(0Dh)
IRQ6(0Eh)
IRQ7(0Fh)

Free, if not used by secondary channel of IDE controller
Free, if not used for serial port
Free, if not used for serial port
Free, if not used for parallel port
Floppy disk drive controller
Free, if not used for parallel port

Using the Setup program:
•
•
•
•
•

IRQ3 can be made available by disabling serial ports 2 and 4.
IRQ4 can be made available by disabling serial ports 1 and 3.
IRQ5 can be made available by disabling the parallel port 2.
IRQ7 can be made available by disabling parallel ports 1 and 2.
IRQ12 can be made available by disabling the mouse interrupt.

PCI Interrupt Request Lines (BIOS version: GX.07.xx)
PCI devices generate interrupt requests using up to four PCI interrupt
request lines (INTA#, INTB#, INTC#, and INTD#).
When a PCI device makes an interrupt request, the request is re-directed to
the system interrupt controller. The interrupt request will be re-directed to
one of the IRQ lines made available for PCI devices.
All PCI devices with interrupt transfer support will use and share INTA#.
A multiple-function PCI device may use several INT lines. These devices will
require more than one system interrupt request line.

Power-On Self-Test (BIOS version: GX.07.xx)
This section describes the Power-On Self-Test (POST) routines, which are
contained in the PC’s ROM BIOS, the error messages which can result, and
the suggestions for corrective action.
Each time the system is powered on, or a reset is performed, the POST is
executed. The POST process verifies the basic functionality of the system
components and initializes certain system parameters. The POST performs
the tests in the order described in the table on the next page.
The POST starts by displaying a graphic screen with the initial HP “Vectra”
logo. If the POST detects an error, the error message is displayed inside a
view system errors screen, in which the error message utility (EMU) not
only displays the error diagnosis, but the suggestions for corrective action.
Error codes are no longer displayed.

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To see the tests performed during the POST, press
when the initial
HP “Vectra” logo appears, and the display will switch to text mode. In this
mode, a summary configuration screen will be displayed at the end of the
POST.
Devices, such as memory and hard disks, are configured automatically. The
user is not requested to confirm the change. However, the user is prompted
if a device is found to have gone missing since the previous boot. The user
can simply accept the new configuration by pressing
.
During the POST, the BIOS and other ROM data are copied into high-speed
shadow RAM. The shadow RAM is addressed at the same physical location
as the original ROM in a manner which is completely transparent to
applications. It therefore appears to behave as very fast ROM. This
technique provides faster access to the system BIOS firmware.
The table on the following page lists the POST routines in the order in which
they are executed (from the shadow RAM). If the POST is initiated by a soft
reset
and
, the RAM tests are not executed and shadow
RAM is not cleared. In all other respects, the POST executes in the same
way following power-on or a soft reset.

Test
LED Test
Processor Test
System (BIOS) ROM Test
RAM Refresh Timer Test
Interrupt RAM Test

Shadow the System ROM
BIOS
Load CMOS Memory
CMOS RAM Test

Description
System BIOS Tests
Tests the LEDs on the control panel.
Tests the processor’s registers. Test failure causes the boot process to
abort.
Calculates an 8-bit checksum. Test failure causes the boot process to
abort.
Tests the RAM refresh timer circuitry. Test failure causes the boot process
to abort.
Checks the first 64 KB of system RAM used to store data corresponding to
various system interrupt vector addresses. Test failures cause the boot
process to abort.
Tests the system ROM BIOS and shadows it. Failure to shadow the ROM
BIOS will cause an error code to display. The boot process will continue,
but the system will execute from ROM. This test is not performed after a
soft reset (using
and
).
Checks the serial EEPROM and returns an error code if it has been
corrupted. Copies the contents of the EEPROM into CMOS RAM.
Checks the CMOS RAM for start-up power loss, verifies the CMOS RAM
checksum(s). Test failure causes error codes to display.

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Internal Cache
Memory Test

Initialize the Video

Test External Cache
Shadow SCSI ROM
8042 Self-Test
Timer 0/Timer 2 Test
DMA Subsystem Test
Interrupt Controller Test
Real-Time Clock Test

RAM Address Line
Independence Test
Size Extended Memory

Real-Mode Memory Test
(First 640KB)

Shadow RAM Test
Protected Mode RAM Test
(Extended RAM)

Keyboard Test

96

Tests the processor’s internal level-one cache RAM. Test failure causes an
error code to display and the boot process to abort.
Video Tests
Initializes the video subsystem, tests the video shadow RAM, and, if
required, shadows the video BIOS. A failure causes an error code to
display, but the boot process continues.
System Board Tests
Tests the level-two cache. A failure causes an error code to display and
disables the external cache.
Tests for the presence of HP SCSI ROMs. If SCSI ROMs are detected, their
contents are copied into the shadow RAM area. A failure will cause an
error code to display.
Downloads the 8042 and invokes the 8042 internal self-test. A failure
causes an error code to display.
Tests Timer 0 and Timer 2. Test failure causes an error code to display.
Checks the DMA controller registers. Test failure causes an error code to
display.
Tests the Interrupt masks, the master controller interrupt path (by forcing
an IRQ0), and the industry-standard slave controller (by forcing an IRQ8).
Test failure causes an error code to display.
Checks the real-time clock registers and performs a test that ensures that
the clock is running. Test failure causes an error code to display.
Memory Tests
Verifies the address independence of real-mode RAM (no address lines
stuck together). Test failure causes an error code to display.
Sizes and clears the protected mode (extended) memory and writes the
value into CMOS bytes 30h and 31h. If the system fails to switch to
protected mode, an error code is displayed.
Read/write test on real-mode RAM. (This test is not done during a reset
using
and
). The test checks each block of
system RAM to determine how much is present. Test failure of a 64 KB
block of memory causes an error code to display, and the test is aborted.
Tests shadow RAM in 64-KB segments (except for segments beginning at
A000h, B000h, and F000h). If they are not being used, segments C000h,
D000h and E000h are tested. Test failure causes an error code to display.
Tests protected RAM in 64 KB segments above 1 MB. (This test is not
done during a reset using
and
). Test failure
causes an error code to display.
Keyboard / Mouse Tests
Invokes a built-in keyboard self-test of the keyboard’s microprocessor and
tests for the presence of a keyboard and for stuck keyboard keys. Test
failure causes an error code to display.

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

Mouse Test

Flexible Disk Controller
Subsystem Test
Internal Numeric Coprocessor
Test

Parallel Port Test

Serial Port Test

Hard Disk Controller
Subsystem Test

System Generation

Plug and Play
Configuration

If a mouse is present, invokes a built-in mouse self-test of the mouse’s
microprocessor and for stuck mouse buttons. Test failure causes an error
code to display.
Tests of Flexible Disk Drive A
Tests for proper operation of the flexible disk controller. Test failure
causes an error code to display.
Coprocessor Tests
Checks for proper operation of the numeric coprocessor part of the
processor. Test failure causes an error code to display.
Parallel Port Tests
Tests the integrated parallel port registers, as well as any other parallel
ports. Test failure causes an error code to display.
Serial Port Tests
Tests the integrated serial port registers, as well as any other serial ports.
Test failure causes an error code to display.
Hard Disk Drive Tests
Tests for proper operation of the hard disk controller. Test failure causes
an error code to display. The test does not detect hard disk replacement
or changes in the size of the hard disk.
System Configuration Tests
Initiation of the system generation (SYSGEN) process, which compares
the configuration information stored in the CMOS memory with the actual
system. If a discrepancy is found, an error code will be displayed.
Configures any Plug and Play device detected (either PCI or ISA):
❒ All PCI devices, and any ISA device necessary for loading the operating
system will be configured for use.
❒ Any ISA device that is not required for loading the operating system,
will be initialized (prepared for loading of a device driver), but not fully
configured for use.

Error Messages (BIOS version: GX.07.xx)
When the PC is switched on or reset, a power-on hardware test is
performed. If an error occurs, an error message is displayed.
HP’s new-style BIOS does not display POST error codes (such as 910B).
These were displayed in the BIOS of previous HP Vectra PCs.

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Message
Operating system not found

Missing operating system

Failure fixed disk
(preceded by a 30” time-out)
Diskette Drive A (or B) error
System battery is dead

Keyboard error
Resource Allocation Conflict -PCI
device 0079 on motherboard
Video Plug and Play interrupted or
failed Re-enable in Setup and try again
System CMOS checksum bad - run
Setup
I/O device IRQ conflict

No message, system “hangs” after
POST
Other

98

Corrective Action and/or Explanation
Check whether the disk, HDD, FDD or CD-ROM disk drive is
connected.
If it is connected, check that it is detected by Setup.
Check that your boot device is enabled on the Setup
Security menu.
If the problem persists, check that the boot device contains
the operating system.
If you have configured HDD user parameters, check that
they are correct. Otherwise, use HDD type “Auto”
parameters.
Check that HDD is connected.
Check that HDD is detected in Setup.
Check that boot on hard disk drive is enabled in Setup.
Check whether the diskette drive is connected. Check
Setup for the configuration.
You may get this message if the PC is disconnected for a
few days. When you Power-on the PC, run Setup to update
the configuration information. The message should no
longer be displayed. Should the problem persist, replace the
battery.
Check that the keyboard is connected.
Clear CMOS.
You may have powered your PC Off/On too quickly and the
PC turned off Video plug and play as a protection.
CMOS contents have changed between 2 power-on
sessions. Run Setup for configuration.
Serial ports A and B may have been assigned the same IRQ.
Assign a different IRQ to each serial port and save the
configuration.
Check that cache memory and main memory are correctly
set in their sockets.
An error message may be displayed and the PC may “hang”
for 20 seconds and then beep. The POST is probably
checking for a mass storage device which it cannot find and
the PC is in Timeout Mode. After Timeout, run Setup to
check the configuration.

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GX.07.xx)

Beep Codes (BIOS version: GX.07.xx)
If a terminal error occurs during POST, the system issues a beep code before
attempting to display the error. Beep codes are useful for identifying the
error when the system is unable to display the error message.

Beep Pattern

Numeric
Code

Description

B4

This does not indicate an error.
There is one short beep before system
startup.

98

Video configuration failure or
Option ROMs checksum failure

16H

BIOS ROM checksum failure

20H

DRAM refresh test failure

22H

8742 Keyboard controller test failure

2C

RAM failure

2E

RAM failure on data bits in low byte of
memory bus

30

RAM failure on data bits in high byte of
memory bus

46

ROM copyright notice check failure

58

Unexpected interrupts test failure

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

HP/Phoenix BIOS (BIOS version: GJ.07.xx)
This section gives an overview of the HP/Phoenix BIOS identified by the
version number GJ.07.xx associated with the HP Vectra 500 Series models,
HP Service part numbers: D3657-63001 and D3661-63001.
The information in this section is divided into three main sub-sections:
• Setup Program: with menu-driven context-sensitive help
(in U.S. English only).
• I/O Addresses Used by the System: the address space, with details of the
interrupts used, described in the section I/O Addresses Used by the
System (BIOS version: GJ.07.xx), on page 104.
• The Power-On-Self-Test or POST, which is the sequence of tests the PC
performs to ensure that the system is functioning correctly, described in
the section Power-On Self-Test (BIOS version: GJ.07.xx), on page 109.

Setup Program (BIOS version: GJ.07.xx)
You can interrupt the POST to run the Setup program by pressing
the F2=Setup message appears on the initial “Vectra” logo screen.

when

The band along the top of the screen offers six menus: Main, Preferences,
Configuration, Security, Power, and Exit. To select one of these, simply
move to the appropriate name, using the left and right arrow keys. Each
menu is discussed below.

Main Menu (BIOS version: GJ.07.xx)
The Main Menu presents the user with a list of fields, such as “System Time”
and “Running Windows 95”. These can be selected using the up and down
arrow keys, and can have their values changed using the
and
keys.
The “Item-Specific Help” field changes automatically as the user moves the
cursor between the fields. It tells the user what the currently highlighted
field is for, and what the options are.
Some fields are not changeable. Examples include fields that are for
information only, and fields whose contents become “frozen” by the setting
of a value in some other field. Such fields are displayed in a different color,
without the “[” and “]” brackets. When the user moves the cursor with the up
and down arrow keys, such fields are skipped. Some fields disappear
completely when a choice in another field makes their appearance
inappropriate).
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HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Preferences Menu (BIOS version: GJ.07.xx)
The Preferences Menu has the same menu structure as the Main Menu and
Power Menu. This menu allows the user to set a password to prevent
unauthorized access to the computer. To set a user password, the
administrator password has to be set first.

Configuration Menu (BIOS version: GJ.07.xx)
The Configuration Menu does not have the same structure as the Main
Menu, Preferences Menu and Power Menu. Instead of presenting a list of
fields, it offers the user a list of sub-menus. Again, the user steps between
the options using the up and down arrow keys, but presses the
key
to enter the chosen sub-menu (and the
key to go back again when
finished).
If access to devices have been disabled in the Security Menu, then the
configuration of those devices on the Configuration Menu becomes frozen.

Phoenix BIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd.
Copyright 1995 Hewlett-Packard Rev. GJ.07.xx

Configuration
Integrated I/O Ports
Parallel port

[2D8h IRQ5]

Parallel port mode

[Centronix TM]

Serial Port A
Serial Port B

3F8h IRQ4
[Disabled]

Flexible disk controller

[Enabled]

Flexible disk drive 1

[1.44 MB, 3 1/2”]

Flexible disk drive 2
A&B Flexible disk swap

[Not Installed]
[Disabled]

Help

á â

Select Item

F7/F8 Change Values

ESC Exit

ß à

Select Menu

Enter Select > Sub-Menu

F1

Item-Specific Help
Enables or disables the
on-board parallel port
at the specified
a d d r e s s . ‘ Di s a b l e d ’
frees resources used by
t he po r t .

F9 Setup Defaults
F10 Previous Values

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Disabling a device in the Configuration Menu (for example, Serial port B in
the diagram above) has the advantage of freeing the resources (such as
IRQs and peripheral addresses). Disabling a device in the Security Menu
disables the access, does not free the resources, but has the advantage of
temporarily disabling the device without losing the configuration settings.
Under the “Memory and Cache” sub-menu, memory caching can be set to
both, internal only or disabled; the memory hole can be enabled
between 15 MB and 16 MB; the graphic POST can be disabled if there is a
Display Option ROM installed; the shadow/cache ISA option ROMs can be
made accessible if detected as being fitted.
Under the “IDE” sub-menu, multi-sector transfers can be disabled, or set
to 2, 4, 8, or 16; the translation method can be set to extended or
standard; the integrated bus adapters can be set to none, primary only,
disabled, or both.

Security Menu (BIOS version: GJ.07.xx)
Sub-menus are presented for changing the characteristics and values of the
User Password and the System Administrator Password.
The “User Password” sub-menu grants access to the keyboard lock timer
option. Once this password has been set, the menu gives access to the main
sub-menu of user preferences.

Power Menu (BIOS version: GJ.07.xx)
The “Power” menu allows the user to set the standby delay. It also allows the
system administrator to decide whether the mouse is enabled as a means of
reactivating the system from Standby. It is also possible to specify whether
the space-bar is enabled as a means of reactivating the system from Off.

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HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Summary Configuration Screen (BIOS version: GJ.07.xx)
You can press
while the initial “Vectra” logo screen is being displayed to
run the Setup program (as described in the previous sub-sections).
Alternatively, you can press
to view the summary configuration screen.
This is displayed for a few seconds only, but it is possible to “freeze” it so the
configuration can be checked. Press the Pause/Break key to “freeze” the
summary screen.
The following summary screen is an example of a system configuration.
Copyright 1985-95 Phoenix Technologies Ltd.
Copyright 1995 Hewlett-Packard
CPU [133 MHz]

: Pentium

System Rom

: F0DC - FFFF

Coprocessor

: Installed

BIOS Version

: GJ.07.17

System RAM

: 640 Kb

COM Ports

: 03F8, 02F8, 03E8

Extended RAM

: 7168 Kb

LPT Ports

: 02D8

Shadow RAM

: 384 Kb

Display Type

: EGA \ VGA

Cache RAM

: None

PS/2 Mouse

: Installed

Hard Disk 0

: 544 Mb

Diskette A

: 1.44 MB

Hard Disk 1

: None

Diskette B

: None

Hard Disk 2

: None

Flexible Disk B

: None

Hard Disk 3

: None

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

I/O Addresses Used by the System (BIOS version: GJ.07.xx)
Peripheral devices, accessory devices and system controllers are accessed
via the system I/O space. The 64 KB of addressable I/O space comprises 8-bit
and 16-bit I/O ports (these are registers that are located in the various
system components). When installing an expansion card, ensure that the
I/O address space selected is in the free area of the space reserved for
expansion cards (100h to 3FFh).
170h-177h, 376h
1F0h-1F7h, 3F6h
278h-27Fh, 378h-37Fh
2E8h-2EFh, 2F8h-2FFh, 3E8h-3EFh, 3F8h-3FFh
370h-371h
3B0h-3DFh
3F0h-3F5h, 3F7h
496h-497h
678h-67Bh
778h-77Bh

IDE controller secondary channel
IDE controller primary channel
Parallel port
Serial port
Integrated I/O Controller
Integrated video graphics controller
Integrated floppy disk drive controller
HP reserved
Parallel port if ECP mode is selected
Parallel port if ECP mode is selected

Refer to the BIOS I/O Port Map (BIOS version: GJ.07.xx), on page 105 for
more detailed information.

System Memory Map (BIOS version: GJ.07.xx)

NOTE

00000h - 9FFFFh

640 KB–Base Memory Area

A0000h - BFFFFh

128 KB–Video Memory

C0000h - C7FFFh

32 KB–Video BIOS

C8000h - DFFFFh

96 KB–Expansion Cards Memory

E000h - EFFFFh

64 KB–Available

F0000h - FFFFFh

64 KB–System BIOS

100000h - FFFFFFFFh

1 MB plus–Extended Memory

Reserved memory used by expansion cards must be located in the
area from C8000h to EFFFFh.

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

BIOS I/O Port Map (BIOS version: GJ.07.xx)
This section describes the HP BIOS port map. The next section provides
more details about how the BIOS uses the system board components
mentioned in the I/O port list.

I/O Address Ports

Function

Bits

0000-000F

DMA Controller 1

8

0020-0021

Interrupt Controller 1

8

0040-0043

Interval Timer 1

8

0060, 0064

Keyboard Controller

8

0061

NMI Status and Control

8

0070

NMI Mask register, RTC address

8

0071

RTC data

8

0081-0083, 008F

DMA Low Page register

8

0092

Alternate reset and A20 Function

8

0096-009F

Internal Ports

8

00A0-00A1

Interrupt Controller 2

8

00C0-00DF

DMA Controller 2

8

00F0-00FF

Co-processor error

0170-0177, 0376

Secondary IDE Controller

01F0-01F7

Primary IDE Controller

0278-027F

Parallel Port 3

02E8-02EF

Serial Port 4

02F8-02FF

Serial Port 2

0370-0377

Secondary Floppy Disk Controller

0378-037F

Parallel Port 2

03B0-03DF

Integrated Video Graphics Controller

03C0-03DF

Integrated Video Graphics Controller

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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

I/O Address Ports

Function

03BC-03BF

Parallel Port 1

03F0--03F5-03F7

Integrated Floppy Disk Controller

03F8-03FF

Serial Port 1

03E8-03EF

Serial Port 3

0CF8-0CFF

Used for PCI Configuration1

0496-0497

HP Reserved

0678-067A

Parallel Port if ECP Mode is Selected

0778-077A

Parallel Port if ECP Mode is Selected

1.

Bits

These addresses are dedicated to configuration registers for PCI devices.

Addressing System Board Components
(BIOS version: GJ.07.xx)
This section provides further details of how the BIOS uses the system board
components mentioned in the I/O port list.

DMA Channel Controllers (BIOS version: GJ.07.xx)
Only “I/O-to-memory” and “memory-to-I/O” transfers are allowed.
“I/O-to-I/O” and “memory-to-memory” transfers are disallowed by the
hardware configuration.
The system controller supports seven DMA channels, each with a page
register used to extend the addressing range of the channel to 16 MB.

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HP/Phoenix BIOS (BIOS version: GJ.07.xx)

The following table summarizes how the DMA channels are allocated.
First DMA controller (used for 8-bit transfers)
Channel
0
1
2
3

Function
Available
Available or ECP mode for parallel port
Floppy disk I/O
Available or ECP mode for parallel port

Second DMA controller (used for 16-bit transfers)
Channel
4
5-6
6-7

Function
Cascade from first DMA controller
Available
Available

Interrupt Controllers
(BIOS version: GJ.07.xx)
The system has two 8259A compatible interrupt controllers. They are
arranged as a master interrupt controller and a slave that is cascaded
through the master.
The following table shows how the master and slave controllers are
connected. As the HP Vectra 500 Series incorporates the Plug and Play
mode, some of the IRQ settings indicated in the following table could be
different. This table should be used as a guideline only. The Interrupt
Requests (IRQ) are numbered sequentially, starting with the master
controller, and followed by the slave.
IRQ (Interrupt Vector)

Interrupt Request Description

IRQ0(08h)

System timer

IRQ1(09h)

Keyboard controller

IRQ2(0Ah)

Slave IRQ

Cascade connection from INTC2 (Interrupt Controller 2)

IRQ8(70h)

Real time clock

IRQ9(71h)

Available for PCI expansion cards, if not used by ISA boards

IRQ10(72h)

Available for PCI expansion cards, if not used by ISA boards

IRQ11(73h)

Available for PCI expansion cards, if not used by ISA boards

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IRQ12(74h)

Mouse

IRQ13(75h)

Pentium processor

IRQ14(76h)

Integrated primary IDE hard disk controller

IRQ15(77h)

Free, if not used by secondary channel of IDE controller1 (CDROM)

IRQ3(0Bh)

Free, if not used used for serial port2

IRQ4(0Ch)

Free, if not used used for communications card or serial port2

IRQ5(0Dh)3

Free, if not used used for expansion card or parallel port4

IRQ6(0Eh)

Floppy disk drive controller

IRQ7(0Fh)

Free, if not used used for parallel port3

1.

IRQ15 can be made available by disabling the secondary channel of the IDE
controller in the SETUP program.
2.
IRQ3 and IRQ4 can be made available by disabling the serial ports in the
SETUP program.
3.If there is a need to use another IRQ for the sound card, the following
Interrupt Vectors can be used: IRQ2, IRQ7 and IRQ10.
4.
IRQ5 and IRQ7 can be made available by disabling the parallel ports in the
SETUP program.

PCI Interrupt Request Lines
(BIOS version: GJ.07.xx)
PCI devices generate interrupt requests using up to four PCI interrupt
request lines (INTA#, INTB#, INTC#, and INTD#).
When a PCI device makes an interrupt request, the request is re-directed to
the system interrupt controller. The interrupt request will be re-directed to
one of the IRQ lines made available for PCI devices.
All PCI devices with interrupt transfer support will use and share INTA#.
A multiple-function PCI device may use several INT lines. These devices will
require more than one system interrupt request line.

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HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Power-On Self-Test (BIOS version: GJ.07.xx)
This section describes the Power-On Self-Test (POST) routines, which are
contained in the PC’s ROM BIOS, the error messages which can result, and
the suggestions for corrective action.
Each time the system is powered on, or a reset is performed, the POST is
executed. The POST process verifies the basic functionality of the system
components and initializes certain system parameters. The POST performs
the tests in the order described in the table on the next page.
The POST displays a graphic screen with the HP Vectra logo. If the POST
detects an error, the error message is displayed. To see the tests performed
during the POST, press
when the initial HP “Vectra” logo appears, and
the display will switch to text mode. In this mode, a summary configuration
screen will be displayed at the end of the POST. Pressing the PAUSE/
BREAK key at any time will allow you to inspect the screen contents. Press
any key to resume.
Devices such as the slave disks are validated in the Setup program. You are
prompted if a device is found to have gone missing since the previous boot.
During the POST, the BIOS and other ROM data are copied into high-speed
shadow RAM. The shadow RAM is addressed at the same physical location
as the original ROM in a manner which is completely transparent to
applications. It therefore appears to behave as very fast ROM. This
technique provides faster access to the system BIOS firmware.
If the POST is initiated by a soft reset
and
, the RAM tests
are not executed and shadow RAM is not cleared. In all other respects, the
POST executes in the same way following power-on or a soft reset.
NOTE

The POST does not detect when a slave hard disk drive (“HDD 1”
or “HDD 3” in the setup) has been installed or changed.

Shadow Ram (BIOS version: GJ.07.xx)
On HP personal computers, access to certain ROM data is enhanced by
using shadow RAM. During the POST, the BIOS and other ROM data are
copied into high-speed shadow RAM. The shadow RAM is addressed at the
same physical location as the original ROM in a manner which is completely
transparent to applications. This technique provides faster access to the
system BIOS firmware.

109

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

POST Test

Description
System BIOS Tests

LED Test
Processor Test
System (BIOS) ROM Test
RAM Refresh Timer Test
Interrupt RAM Test

Shadow the System ROM
BIOS
Load CMOS Memory
CMOS RAM Test
Internal Cache
Memory Test

Tests the LEDs on the control panel.
Tests the processor’s registers. Test failure causes the boot process to
abort.
Calculates an 8-bit checksum. Test failure causes the boot process to
abort.
Tests the RAM refresh timer circuitry. Test failure causes the boot process
to abort.
Checks the first 64 KB of system RAM used to store data corresponding to
various system interrupt vector addresses. Test failures cause the boot
process to abort.
Tests the system ROM BIOS and shadows it. Failure to shadow the ROM
BIOS will cause an error code to display. The boot process will continue,
but the system will execute from ROM. This test is not performed after a
soft reset (using
and
).
Checks the serial EEPROM and returns an error code if it has been
corrupted. Copies the contents of the EEPROM into CMOS RAM.
Checks the CMOS RAM for start-up power loss, verifies the CMOS RAM
checksum(s). Test failure causes error codes to display.
Tests the processor’s internal level-one cache RAM. Test failure causes an
error code to display and the boot process to abort.
Video Tests

Initialize the Video

110

Initializes the video subsystem, tests the video shadow RAM, and, if
required, shadows the video BIOS. A failure causes an error code to
display, but the boot process continues.

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

System Board Tests
Test External Cache

Tests the level-two cache. A failure causes an error code to display and
disables the external cache.

Shadow SCSI ROM

Tests for the presence of HP SCSI ROMs. If SCSI ROMs are detected, their
contents are copied into the shadow RAM area. A failure will cause an
error code to display.

8042 Self-Test

Downloads the 8042 and invokes the 8042 internal self-test. A failure
causes an error code to display.

Timer 0/Timer 2 Test

Tests Timer 0 and Timer 2. Test failure causes an error code to display.

DMA Subsystem Test
Interrupt Controller Test
Real-Time Clock Test

Checks the DMA controller registers. Test failure causes an error code to
display.
Tests the Interrupt masks, the master controller interrupt path (by forcing
an IRQ0), and the industry-standard slave controller (by forcing an IRQ8).
Test failure causes an error code to display.
Checks the real-time clock registers and performs a test that ensures that
the clock is running. Test failure causes an error code to display.
Memory Tests

RAM Address Line
Independence Test

Verifies the address independence of real-mode RAM (no address lines
stuck together). Test failure causes an error code to display.

Size Extended Memory

Sizes and clears the protected mode (extended) memory and writes the
value into CMOS bytes 30h and 31h. If the system fails to switch to
protected mode, an error code is displayed.

Real-Mode Memory Test
(First 640KB)

Read/write test on real-mode RAM. (This test is not done during a reset
using
and
). The test checks each block of
system RAM to determine how much is present. Test failure of a 64 KB
block of memory causes an error code to display, and the test is aborted.

Shadow RAM Test

Tests shadow RAM in 64-KB segments (except for segments beginning at
A000h, B000h, and F000h). If they are not being used, segments C000h,
D000h and E000h are tested. Test failure causes an error code to display.

Protected Mode RAM
Test (Extended RAM)

Tests protected RAM in 64-KB segments above 1 MB. (This test is not
done during a reset using
and
). Test failure
causes an error code to display.
Keyboard / Mouse Tests

Keyboard Test

Invokes a built-in keyboard self-test of the keyboard’s microprocessor and
tests for the presence of a keyboard and for stuck keyboard keys. Test
failure causes an error code to display.

Mouse Test

If a mouse is present, invokes a built-in mouse self-test of the mouse’s
microprocessor and for stuck mouse buttons. Test failure causes an error
code to display.

111

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Tests of Flexible Disk Drive A
Flexible Disk Controller
Subsystem Test

Tests for proper operation of the flexible disk controller. Test failure
causes an error code to display.
Coprocessor Tests

Internal Numeric
Coprocessor Test

Checks for proper operation of the numeric coprocessor part of the
processor. Test failure causes an error code to display.
Parallel Port Tests

Parallel Port Test

Tests the integrated parallel port registers, as well as any other parallel
ports. Test failure causes an error code to display.
Serial Port Tests

Serial Port Test

Tests the integrated serial port registers, as well as any other serial ports.
Test failure causes an error code to display.
Hard Disk Drive Tests

Hard Disk Controller
Subsystem Test

Tests for proper operation of the hard disk controller. Test failure causes
an error code to display. The test does not detect hard disk replacement
or changes in the size of the hard disk.
System Configuration Tests

System Generation

Initiation of the system generation (SYSGEN) process, which compares
the configuration information stored in the CMOS memory with the actual
system. If a discrepancy is found, an error code will be displayed.
Configures any Plug and Play device detected (either PCI or ISA):

Plug and Play
Configuration

112

❒ All PCI devices and any ISA device necessary for loading the operating
system will be configured for use.
❒ Any ISA device that is not required for loading the operating system
will be initialized (prepared for loading of a device driver), but not fully
configured for use.

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Error Messages (BIOS version: GJ.07.xx)
When the PC is switched on or reset, a power-on hardware test is
performed. If an error occurs, an error message is displayed.
NOTE:

HP’s new-style BIOS does not display POST error codes (such as 910B).
These were displayed in the BIOS of previous HP Vectra PCs.

Message

Corrective Action and/or Explanation

Operating system not found

Check whether the disk, HDD, FDD or CD-ROM disk drive is
connected.
If it is connected, check that it is detected by POST.
Check that your boot device is enabled on the Setup
Security menu.
If the problem persists, check that the boot device contains
the operating system.

Missing operating system

If you have configured HDD user parameters, check that
they are correct. Otherwise, use HDD -type “Auto”
parameters.

Failure fixed disk
(preceded by a 30” time-out)

Check that HDD is connected.
Check that HDD is detected by POST.
Check that boot on hard disk drive is enabled in Setup.

Diskette Drive A (or B) error

Check whether the diskette drive is connected. Check
Setup for the configuration.

System battery is dead

You may get this message if the PC is disconnected for a
few days. When you power-on the PC, run Setup to update
the configuration information. The message should no
longer be displayed. Should the problem persist, replace the
battery.

Keyboard error

Check that the keyboard is connected.

Resource Allocation Conflict -PCI
device 0079 on system board

Clear CMOS.

Video Plug and Play interrupted or
failed Re-enable in Setup and try again

You may have powered your PC Off/On too quickly and the
PC turned off Video plug and play as a protection.

System CMOS checksum bad - run
Setup

CMOS contents have changed between 2 power-on
sessions. Run Setup for configuration.

I/O device IRQ conflict

Serial ports A and B may have been assigned the same IRQ.
Assign a different IRQ to each serial port and save the
configuration.

No message, system “hangs” after
POST

Check that cache memory and main memory are correctly
set in their sockets.

113

4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Message

Corrective Action and/or Explanation

Other

An error message may be displayed and the PC may “hang”
for 20 seconds and then beep. The POST is probably
checking for a mass storage device which it cannot find and
the PC is in Timeout Mode. After Timeout, run Setup to
check the configuration.

Beep Codes (BIOS version: GJ.07.xx)
If a terminal error occurs during POST, the system issues a beep code before
attempting to display the error. Beep codes are useful for identifying the
error when the system is unable to display the error message.

Beep Pattern

114

Numeric
Code

Description

B4

This does not indicate an error.
There is one short beep before system
startup.

98

Video configuration failure or
Option ROMs checksum failure

16H

BIOS ROM checksum failure

20H

DRAM refresh test failure

22H

8742 Keyboard controller test failure

2C

RAM failure

2E

RAM failure on data bits in low byte of
memory bus

30

RAM failure on data bits in high byte of
memory bus

46

ROM copyright notice check failure

58

Unexpected interrupts test failure

5

Video Controllers
This chapter gives details of the three types of video subsystems used by the
HP Vectra 500 Series computers. These video subsystems are: the SiS 6250
and S3 Trio 64 PnP video controllers, both of which are integrated on the
system board, and the Matrox MGA Millennium video card.

115

5 Video Controllers
SiS 6205 Video Controller

SiS 6205 Video Controller
The SiS 6205 video controller supports UMA architecture, and therefore no
dedicated video memory is loaded on the system board. The shared frame
buffer is located in the system DRAM and the memory access bus and
memory data bus.
The SiS 6205 video controller offers full compatibility with VGA. In addition,
the features are enhanced beyond the Super VGA by hardware which
accelerates graphical user interface operation in Windows 95.
The SiS 6205 video controller is installed on the HP Vectra 500 Series PC
models with part number D4051-63001. For a complete list of the computers
associated with this part number, refer to “D4051-63001 Models” on page
15.

SiS 6205 Video Controller Summary
The video subsystem uses the PCI bus for data transfers between the
processor and the video subsystem, and has the following features:
• 64-bit video memory access with 1 or 2 MB of video memory.
• Support for up to 2 MB DRAM at 60 ns.
• Graphics resolutions of up to 1280 x 1023 with 2 MB.
• Integrated 24-bit RAMDAC.
• Green PC power-saving features.
• Standard and Enhanced Video Graphics Array (VGA) modes.
• DDC 2B compliant.

116

5 Video Controllers
SiS 6205 Video Controller

HP Vectra 500 Series with the
SiS 6205 Chip
Video Controllers

SIS 6205 Video Controller

Hardware Acceleration of major
graphics operations to speed up
applications using graphical user
interfaces (GUIs)

Yes

DRAM support

1 MB of 60 ns resident in main memory.

Graphics Resolutions

Up to 1280 x 1023

Pixel Clock (Max.)

135 MHz

Upgradeable to:

2 MB by using the HP
Setup program, or Using
the HP Dynamic Video
Feature, on page 118.

Upgrading Video Memory (UMA)
The default setting for the video memory is 1 MB. The video memory is
resident in the main memory, so if there is 12 MB of main memory, 1 MB of
this is allocated to the video memory.
To increase the amount of video memory from 1 MB up to the maximum of
2 MB, there is no need to physically install any video memory modules. If we
use the above example of 12 MB of main memory, this means that setting the
video memory to 2 MB would leave 10 MB for the main memory.
This is useful when there is a need to upgrade the video memory for
applications that will need more than 1 MB. This can then be switched back
to the original setting when finished.
The video memory can be upgraded either by using the HP Setup program
or from within Windows 95.

117

5 Video Controllers
SiS 6205 Video Controller

Using the HP Dynamic Video Feature
To increase the amount of video memory using the HP Dynamic video
feature, follow these steps:
•

Click the Start button.

•

Select Settings, then Control Panel.

•

Double-click the Display icon.

•

Click the HP Dynamic Video tab.

•

Drag the Video Memory slider from 1 MB to 2 MB. (The System memory
value is automatically adjusted).

•

Click the OK button and then restart your computer for the video memory
configuration to take effect.

Typical Windows 95 Video Resolutions (SiS 6205 Chip)
The following are typical Windows 95 video resolutions that are supported
by the SiS 6205 video controller.
Resolution

Number of colors

Refresh Rate (Hz)

Memory

640 x 480

16

60

1 MB

640 x 480

256, 64K, 16M

60, 72, 75, 85

800 x 600

256, 64K

56, 60, 72, 75, 85

1024 x 768

256

i431 60, 70, 75, 85

Resolution

Number of colors

Refresh Rate (Hz)

Memory

640 x 480

16

60

2 MB

640 x 480

256, 64K, 16M

60, 72, 75, 85

800 x 600

256, 64K, 16M

56, 60, 72, 75, 85

1024 x 768

256, 64K

i431, 60, 70, 75, 85

1280 x 1023

256

i431, 60, 75

1.

118

Interlaced.

5 Video Controllers
SiS 6205 Video Controller

VESA Feature Connector (SiS 6205 Chip)
The Video Electronics Standards Association (VESA) defines a standard
video connector, variously known as the VESA feature connector, auxiliary
connector, or pass-through connector. The integrated video controller
supports an output-only VESA feature connector. This connector is
integrated directly on the system board and is connected directly to the
pixel data bus and the synchronization signals.

119

5 Video Controllers
The Integrated Ultra VGA Video Controller

The Integrated Ultra VGA Video Controller
The Integrated Ultra VGA video controller is installed on the HP Vectra 500
Series PC models with part number D3657-63001. For a complete list of the
computers associated with this part number, refer to “D4051-63001 Models”
on page 15

S3 Trio 64 Video Controller Summary
The video subsystem uses the PCI bus for data transfers between the
processor and the video subsystem, and has the following features:
• 100% compatible with IBM VGA display standard.
• 32-bit video memory access with 1 MB DRAM. This increases to 64-bit
access when an additional 1 MB DRAM is installed.
• Hardware acceleration of graphical user interface (GUI) operations.
• Support for up to 2 MB DRAM at 60 ns.
• Graphics resolutions of up to 1280 x 1024 with 2MB.
• Integrated 24-bit RAMDAC.
• Green PC power saving features.
• Standard and Enhanced Video Graphics Array (VGA) modes.
• DDC 1 compliant.
HP Vectra 500 Series with the
S3 Trio 64 PnP Chip
Video Controller

Integrated 64-bit Ultra VGA on PCI
bus (S3 Trio 64 PnP).

Hardware Acceleration of major graphics
operations to speed up applications
using graphical user interfaces (GUIs)

yes.

DRAM support

1-2 MB of 60 ns .
1 MB preinstalled.

Graphics Resolutions Up to

1280 x 1024.

Pixel Clock (Max.)

135 MHz.

120

Upgradeable
to:

2 MB (pair of
512KB modules)

5 Video Controllers
The Integrated Ultra VGA Video Controller

S3 Trio 64 Video Memory
The S3 Trio 64 PnP integrated video subsystem has 1 MB of video DRAM
preinstalled on the system board, and provides two sockets for the
installation of a pair of 512KB video DRAM chips, to upgrade to video
memory to 2 MB. The installed video memory capacity is detected
automatically by the BIOS.
Normally, the controller gives 32-bit video memory access, with 1 MB of
video RAM fitted. This is increased to 64-bit access when the additional
1 MB upgrade is installed.
When the upgrade modules are installed, care must be exercised to align the
tapered end of the module with the tapered end of the socket on the system
board. A special extraction tool (5041-2553) is needed when removing the
modules.

S3 Trio 64 Video Modes
The video subsystem is responsible for generating video data (which is
placed in video memory) to be sent to the display.
The following table details the Standard and Enhanced Video Graphics
Array (VGA) modes which are currently implemented in the video BIOS.
These modes are supported by standard BIOS functions; that is, the video
BIOS (which is mapped contiguously in the address range C0000h to
C7FFFh) contains all the routines required to configure and access the
video subsystem.
Standard VGA Modes (S3 Trio 64)
Mode No.

Standard

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh (Hz)

Horizontal
Refresh (kHz)

Dot Clock
(MHz)

00h

VGA

text

40 x 25 chars

b/w

70

31.5

25.175

00h

VGA

text

40 x 25 chars

b/w

70

31.5

25.175

00h+

VGA

text

40 x 25 chars

b/w

70

31.5

28.322

01h

VGA

text

40 x 25 chars

16

70

31.5

25.175

01h

VGA

text

40 x 25 chars

16

70

31.5

25.175

01h+

VGA

text

40 x 25 chars

16

70

31.5

28.322

02h

VGA

text

80 x 25 chars

b/w

70

31.5

25.175

02h

VGA

text

80 x 25 chars

b/w

70

31.5

25.175

02h+

VGA

text

80 x 25 chars

b/w

70

31.5

28.322

03h

VGA

text

80 x 25 chars

16

70

31.5

25.175

121

5 Video Controllers
The Integrated Ultra VGA Video Controller

Mode No.

Standard

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh (Hz)

Horizontal
Refresh (kHz)

Dot Clock
(MHz)

03h

VGA

text

80 x 25 chars

16

70

31.5

25.175

03h+

VGA

text

80 x 25 chars

16

70

31.5

28.322

04h

VGA

graph

320 x 200

4

70

31.5

25.175

05h

VGA

graph

320 x 200

4

70

31.5

25.175

06h

VGA

graph

640 x 200

2

70

31.5

25.175

07h

VGA

text

80 x 25 chars

Mono

70

31.5

28.322

07h+

VGA

text

80 x 25 chars

Mono

70

31.5

28.322

0Dh

VGA

graph

320 x 200

16

70

31.5

25.175

0Eh

VGA

graph

640 x 200

16

70

31.5

25.175

0Fh

VGA

graph

640 x 350

Mono

70

31.5

25.175

10h

VGA

graph

640 x 350

16

70

31.5

25.175

11h

VGA

graph

640 x 480

2

60

31.5

25.175

12h

VGA

graph

640 x 480

16

60

31.5

25.175

13h

VGA

graph

320 x 200

256

70

31.5

25.175

Extended Video Modes with 1 MB DRAM (S3 Trio 64)
VESA
Mode No.

Extended
Mode No.

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh
(Hz)

Horizontal
Refresh
(kHz)

Dot Clock
(MHz)

10Ah
109h
100h
101h
101h
101h
102h
102h
102h
102h
103h
103h
103h
103h
104h
104h
104h

54h
55h
68h
69h
69h
69h
6Ah
6Ah
6Ah
6Ah
6Bh
6Bh
6Bh
6Bh
6Ch
6Ch
6Ch

text
text
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph

132 x 43 chars
132 x 25 chars
640 x 400
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
1024 x 768
1024 x 768
1024 x 768

16
16
256
256
256
256
16
16
16
16
256
256
256
256
16
16
16

70
70
70
60
72
75
56
60
72
75
56
60
72
75
43 (i)
60
70

31.5
31.5
31.5
31.5
37.9
37.5
35.1
37.9
48.1
47.5
35.1
37.9
48.1
46.8
35.5
48.4
56.5

40.000
40.000
25.175
25.175
31.500
31.500
36.000
40.000
50.000
49.500
36.000
40.000
50.000
49.500
44.900
65.000
75.000

122

5 Video Controllers
The Integrated Ultra VGA Video Controller

VESA
Mode No.

Extended
Mode No.

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh
(Hz)

Horizontal
Refresh
(kHz)

Dot Clock
(MHz)

104h
105h
105h
105h
105h
106h
107h
107h
107h
107h
110h
110h
110h
111h
111h
111h
112h
112h
112h
113h
113h
113h
114h
114h
114h
115
115
115
116
116
116
116
117
117
117
117
118
119
11A

6Ch
6Dh
6Dh
6Dh
6Dh
6Eh
6Fh
6Fh
6Fh
6Fh
70h
70h
70h
71h
71h
71h
72h
72h
72h
73h
73h
73h
74h
74h
74h
75h
75h
75h
76h
76h
76h
76h
77h
77h
77h
77h
78h
79h
7A

graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph

1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1280 x 1024
1280 x 1024

16
256
256
256
256
16
256
256
256
256
32 K
32 K
32 K
64
64
64
16 M
16 M
16 M
32 K
32 K
32 K
64
64
64
16 M
16 M
16 M
32 K
32 K
32 K
32 K
64
64
64
64
16 M
32 K
64

75
43 (i)
60
70
75
45 (i)
45 (i)
60
72
75
60
72
75
60
72
75
60
72
75
60
72
75
60
72
75
60
72
75
43 (i)
60
70
75
43 (i)
60
70
75
43 (i)
45 (i)
45 (i)

60.2
35.5
48.4
56.5
60.2
47.7
47.7
63.7
77.7
79.5
31.5
37.5
37.5
31.5
37.5
37.5
31.5
37.9
37.5
37.9
48.1
46.8
37.9
48.1
46.8
37.9
48.1
46.8
35
48.9
56.5
60.4
35
48.9
56.5
60.4
35.2
48.7
48.7

80.000
44.900
65.000
75.000
80.000
75.000
37.500 x 2
55.000 x 2
65.000 x 2
67.500 x 2
25.175
31.500
31.500
25.175
31.500
31.500
25.175
31.500
31.500
40.000
50.000
49.500
40.000
50.000
49.500
40.000
50.000
49.500
44.900
65.000
75.000
80.000
44.900
65.000
75.000
80.000
44.900
75.000
75.000

123

5 Video Controllers
The Integrated Ultra VGA Video Controller

VESA
Mode No.

Extended
Mode No.

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh
(Hz)

Horizontal
Refresh
(kHz)

Dot Clock
(MHz)

120
201
201
201
202
202
202
202
203
203
203
203
204
204
204
204
205
205
205
205
207h
208h
208h
208h
208h
i =interlaced

7c
49
49
49
4A
4A
4A
4A
4B
4B
4B
4B
4C
4C
4C
4C
4D
4D
4D
4D
4Eh
4Fh
4Fh
4Fh
4Fh

graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph

1600 x 1200
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1152 x 864
1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024

256
256
256
256
16
16
16
16
256
256
256
256
16
16
16
16
256
256
256
256
256
16
16
16
16

48.5 (i)
60
72
75
56
60
72
75
56
60
72
75
43 (i)
60
70
75
60
70
75
75
60
43 (i)
60
72
75

62
31.5
37.9
37.5
35.1
37.9
48.1
46.9
35.1
37.9
48.1
46.8
35.5
48.4
56.5
60.3
48.4
56.5
60.2
60.2
55.3
47.7
63.7
77.7
79.8

65.000 x 2
25.175
31.500
31.500
36.000
40.000
50.000
49.500
36.000
40.000
50.000
49.500
44.900
65.000
75.000
80.000
44.900
65.000
75.000
80.000
80.000
37.500 x 2
55.000 x 2
65.000 x 2
65.000 x 2

124

5 Video Controllers
The Integrated Ultra VGA Video Controller

Extended Video Modes with 2 MB DRAM (S3 Trio 64)
VESA
Mode No.

Extended
Mode No.

Interface
Type

Resolution

No. of
Colors

Vertical
Refresh
(Hz)

Horizontal
Refresh
(kHz)

Dot Clock
(MHz)

107h
107h
107h
107h
115h
115h
115h
116h
116h
116h
116h
116h
117h
117h
117h

6Fh
6Fh
6Fh
6Fh
75h
75h
75h
76h
76h
76h
76h
76h
77h
77h
77h

graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph
graph

1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024
800 x 600
800 x 600
800 x 600
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768

256
256
256
256
16. M
16. M
16. M
32 K
32 K
32 K
32 K
32 K
64
64
64

45 (i)
60
72
75
60
72
75
43i
60
70
75
85
43i
60
70

47.7
63.7
77.7
79.5
37.9
41.8
46.8
35
48.9
56.5
60.2
68.7
35
48.9
56.5

37.500 x 2
55.000 x 2
65.000 x 2
67.500 x 2
40.000
50.000
49.500
44.900
65.000
75.000
80.000
95.000
44.900
65.000
75.000

Typical Windows 95 Video Resolutions (S3 Trio 64)
Resolution

Number of colors

Refresh Rate (Hz)

640 x 480

16

60

640 x 480

256, 64K

60, 72, 75

800 x 600

256, 64K

56, 60, 72, 75

1024 x 768

256

i431 60, 70, 75

Resolution

Number of colors

Memory
1 MB

Refresh Rate (Hz)

640 x 480

16

60

640 x 480

256, 64K, 16M

60, 72, 75

800 x 600

256, 64K, 16M

56, 60, 72, 75

1024 x 768

256, 64K

i431, 60, 70, 75

1280 x 1024

256

i451, 60, 72, 75

Memory
2 MB

1. Interlaced.

125

5 Video Controllers
The Integrated Ultra VGA Video Controller

VESA Connector
The Video Electronics Standards Association (VESA) defines a standard
video connector, variously known as the VESA feature connector,
auxiliary connector, or pass-through connector. The integrated video
controller supports an output-only VESA feature connector. This connector
is integrated directly on the system board, and is connected directly to the
pixel data bus and the synchronization signals.
To use the VESA feature connector in DOS, or Windows 95, the FCON.EXE
utility must be executed. This utility configures the system.
WARNING

Use of the VESA feature connector will disable the 1 MB video
memory upgrade, if this has been installed. Only the standard 1 MB
of video memory will be used.

126

5 Video Controllers
Matrox MGA Millennium Video Controller Card

Matrox MGA Millennium Video Controller Card
The Matrox MGA Millennium PCI video controller is installed in a PCI
expansion slot. Its on-card MGA-2064W processor communicates with the
Pentium Pro processor along the PCI bus.
The Matrox MGA Millennium video controller is installed on the HP Vectra
500 Series PC models with system board part number D3661-63001. For a
complete list of the computers associated with this part number, refer to
“D3661-63001 Model” on page 17.
The controller can be characterized as follows:
• 100% hardware- and BIOS-compatible with IBM® VGA display standard.
• 64-bit video memory access.
• Hardware acceleration of graphical user interface (GUI) operations.
• Support for up to 8 MB Window RAM (WRAM) at 60 ns.
• Integrated 24-bit, 175 MHz RAMDAC.
• Pixel clock maximum frequency of 135 MHz.
• Green PC power-saving features.
• Standard and Enhanced Video Graphics Array (VGA) modes.
• Acceleration for 3D, playback, MPEG (when an optional upgrade module
from Matrox is fitted), continuous interpolation on X, replication on Y, acceleration at true color.
• DDC 2B compliant.

127

5 Video Controllers
Matrox MGA Millennium Video Controller Card

MGA Connectors
The Video Electronics Standards Association (VESA) defines a standard
video connector, variously known as the VESA feature connector,
auxiliary connector, or pass-through connector. The video controller
supports an output-only VESA feature connector in VGA mode. This
connector is integrated on the PCI card, and is connected directly to the
pixel data bus and the synchronization signals.
There are two connectors on the back panel: the normal DB15 VGA
connector for connecting to HP displays, and a Matrox VESA connector.

VESA pass-through connector

Top half of upgrade socket
2 MB memory chips

Matrox VESA connector
Graphics processor chips
Bottom half of upgrade socket

Top and bottom halves of the
upgrade socket. (For the
installation of a video memory
upgrade module or the Matrox
MPEG module).

Display connector
Configuration switches

Configuration switches. (Set to
their bottom position for
normal operation).

If you install a VESA-standard video expansion card that uses the MGA
video adapter, connect the expansion card’s cable to the VESA pass-through
connector on the card.

MGA Video Memory
The video memory (also known as window RAM, or WRAM) is a local block
of RAM for holding two major data structures: the double buffer (to hold one
frame steady on the screen whilst the next one is being processed), and the
Z-buffer (for storing depth information for each pixel). It is dual-ported, so
that it can be input and output simultaneously.
The Matrox MGA Millennium video card is supplied with 2 MB of video
memory. This can be upgraded to 4 MB with a D3557A upgrade module, or
to 8 MB with an MGA-MIL/MOD6 upgrade module (ordered from Matrox).
The upgrade socket can alternatively be used for the installation of the
Matrox MGA Media XL upgrade module (also ordered from Matrox) to
support MPEG. The switch settings do not have to be changed.

128

5 Video Controllers
Matrox MGA Millennium Video Controller Card

Available MGA Video Resolutions
The number of colors supported is limited by the video card and the video
memory. The resolution/refresh-rate combination is limited by a
combination of the display, the graphics card, and the video memory.
If you attempt to set the resolution or number of colors higher than is
supported by the installed video memory, the screen refresh rate is lowered
automatically, and image flicker becomes more noticeable. If the resolution/
refresh-rate combination is set higher than the display can support, you risk
damaging the display.
Resolution

Video Adapter Maximum
Refresh Rate (Hz)

640 x 480
800 x 600

256, 64K, 16M
256, 64K, 16M

1024 x 768

256, 64K

1280 x 1024

256

90

1600 x 12001

256

72

640 x 480

256, 64K, 16M

120

800 x 600

256, 64K, 16M

120

1024 x 768

256, 64K, 16M

1280 x 1024
1600 x 12001

256, 64K, 16M (24 bpp)
256, 64K

90
72

640 x 480
800 x 600

256, 64K, 16M
256, 64K, 16M

120

1024 x 768

256, 64K, 16M

1280 x 1024

256, 64K, 16M
256, 64K, 16M

1600 x 12001
1.

Number of colors

Memory
2 MB

4 MB

8 MB

90
72

The upper limit of refresh rate for HP monitors is 60Hz at this resolution.

Drivers are provided on the CD-ROM that is supplied with the PC for
Windows 95.

129

5 Video Controllers
Matrox MGA Millennium Video Controller Card

The following table summarizes the video resolutions which are supported.
Number of
Colors

256

64 K
Hi-Color

16.7 M
True-Color

16.7 M
True-Color

Bits per Pixel

8

16

24

32

640 ✕ 480

2 MB, 120 Hz

800 ✕ 600
1024 ✕ 768

2 MB, 120 Hz

1152 ✕ 882

1

1280 ✕ 1024
1600 ✕ 12002
1.

2 MB, 120 Hz

4 MB, 120Hz

2 MB, 100 Hz

4 MB, 100 Hz

2 MB, 90 Hz
2 MB, 72 Hz

4 MB, 90 Hz
4 MB, 72 Hz

8 MB, 90 Hz

8 MB, 72 Hz

Not supported

1152 ✕ 882 is not supported by HP displays

2.The upper limit of refresh rate for HP monitors is 60Hz at this resolution.

The maximum 2D resolutions for any given video memory capacity and
color scale can be found from the following table:
Number
of Colors

256

64 K
Hi-Color

16.7 M
True-Color

16.7 M
True-Color

Bits per Pixel

8

16

24

32

2 MB

1600 ✕ 1200

1024 ✕ 768

800 ✕ 600

800 ✕ 600

4 MB

1600 ✕ 1200

1600 ✕ 1200

1280 ✕ 1024

1152 ✕ 8821

8 MB

1600 ✕ 1200

1600 ✕ 1200

1600 ✕ 1200

Not supported

1.

130

1152 ✕ 882 is not supported by HP displays

5 Video Controllers
Matrox MGA Millennium Video Controller Card

MGA Video BIOS
A feature of the Matrox MGA Millennium card is the capability to flash
program the video BIOS. This is achieved as follows:
1 Set SW-1, on the Matrox card, to ON (BIOS unprotected).
2 Set the “Operating System” field in the Setup program to Others.
3 Run the updbios.bat command file (provided by HP), to execute the
video BIOS flash program, progbios.exe, and the associated *.bin file.
4 Set SW-1, on the Matrox card, to OFF (BIOS protected).
5 Set the “Operating System” field in the Setup program back to an appropriate setting.
Video cards without ROM (such as old CGA and monochrome) are not
supported by the BIOS. Memory holes above 1 MB are not supported. DDC
display detection is not a BIOS feature, but is handled by the video drivers.

Further Information About MGA
For more information on the Matrox MGA Millennium video adapter card,
contact Matrox Electronic Systems:
Matrox Electronic Systems Ltd.,
1055 St. Regis Blvd., Dorval, Quebec,
Canada H9P 2T4.
Telephone: (514) 685-2630; Fax: (514) 685-2853; BBS: (514) 685-6008

131

5 Video Controllers
DB15 Connector Pinout

DB15 Connector Pinout
The layout of the pins for the DB15 VGA Connector are the same for the
three video controllers mentioned earlier in this section.

6 - Ground
Red -1
Green - 2
Blue - 3

7 - Ground

11 - Not Used
12 - Data from display (DDC1)

8 - Ground
13 - H-Sync
9 - Not Used

Not Used - 4

14 - V-Sync
10 - Ground

Ground - 5

132

15 - Not Used

6

Aztech AT3300
Audio Fax/Data Modem
Depending on the particular HP Vectra 500 Series PC model, there may
be an Aztech AT3300 audio fax/data modem installed. This modem
incorporates built-in advanced communication and audio telephony
features, including a capability to perform simultaneous audio playback
and recording, as well as hands-free communication.

6 Aztech AT3300 Audio Fax/Data Modem
Introduction

Introduction
The Aztech AT3300 audio fax/data modem operates in Plug and Play
mode, therefore the hardware settings should not conflict with those of
any other devices on the system. The Windows 95 Device Manager can
be used to check the type of modem and configuration installed on the
PC.
The built-in full duplex Speakerphone communications option
delivered with the HP Vectra 500 Series PC offers a complete business
solution. It provides the latest state-of-the-art communications tools
that give access to a world of communications possibilities. Not only is
it possible to send and receive faxes, and receive voice messages, but
also to access a huge store of information through Bulletin Board
Systems (called BBSs). Files and computer software can be uploaded
and downloaded to and from a BBS.
The Speakerphone communications option provides hands-free
communication and multimedia functions, through the use of a headset
and other audio devices. However, what will be appreciated most in the
communications option is its telephone answering capabilities and the
possibility for everyday modem-to-modem exchange of business faxes
and files.
Service providers, including America Online, CompuServe, GEnie, and
Prodigy, supply access to services such as electronic mail, airline
reservations, banking and finance, and computer support forums.
The communications option is fully compliant with both U.S. and
international communications standards. Compatibility with these
standards ensures the possibility to communicate with other modems
anywhere in the world.

134 English

6 Aztech AT3300 Audio Fax/Data Modem
Introduction

Communications Options
As a data modem, the modem operates at line speeds of up to
28,800 bps. Error correction (V.42/MNP 2-4) and data compression
(V.42 bis/MNP 5) maximize data transfer integrity and boost data
throughput up to 115.2 kbps. The modem also operates in non-errorcorrecting mode.
Extended “AT” commands provide data, fax class 1 and class 2, and
MNP 10 functions, while using minimal external ROM, RAM, and
optional NVRAM.
The modem also operates over a dial-up telephone line, can autodial
and autoanswer, and can operate in both synchronous and
asynchronous modes.
As well as combining computer and telephone technologies, the
communications option has the following features:
•

28,800-bps internal modem.

•

Answering machine with multiple-voice mailboxes.

•

Automatic baud rate recognition at all speeds.

•

Autodial and autoanswer.

•

Caller ID (available from the local telephone company) to screen
incoming calls.

•

Data modem throughput up to 115.2 kbps.
V.34, V.FC, V.32 bis, V.32, V.22 bis, V.22A/B, V.23, and V.21; Bell
212A and 103.
ITU V.42 bis and MNP 5 data compression.
ITU V.42 and MNP 2-4 , MNP10, MNP 10EC error correction.

•

Digitized speech compression or decompression or both.

•

Enhanced ADPCM/PCM voice operation with concurrent DTMF
detection.

English 135

6 Aztech AT3300 Audio Fax/Data Modem
Introduction

•

Fax modem send and receive rates of up to 14,400 bps.
V.17/V.29/V.27ter and V21 channel 2, Group 3 Fax mode.

WARNING

•

Full duplex speakerphone.

•

Enhanced AT, voice and class 1 & 2 fax commands.

•

Line quality monitoring retrain.

•

Recording of telephone conversation through the communication
card.

•

Support for external speakers.

•

Tone or pulse dialing.

In some countries, pulse dialing is not supported. This concerns the
following countries: United Kingdom, Sweden, Netherlands and
Norway.
•

Up to 115,200-bps data transfers (V.34 with V.42 bis).

•

Voice and data or fax operations in a single call, without having to
hang up and redial.

•

Voiceview - alternating voice and data.

•

Voice monitoring function with auto fax/voice switch.

136 English

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

European Firmware and Telephone Line Configuration
The configuration of the Aztech AT3300 audio fax/data modem is
specific to each country’s telephone standards. The following table
shows the different AT3300 European firmware configuration and
telephone line interface.

Country

Firmware
Country
Code

Jumper
Block
Color

Pulse Dialing
Supported

Denmark

003

Blue

No

Finland

004

Orange

Yes

France

005

Red

Yes

Germany

006

Black

Yes

Italy

008

Pink

Yes

Netherlands

010

Blue

No

Norway

011

White

No

Portugal

012

Blue

Yes

Spain

013

Yellow

Yes

Sweden

014

Purple

No

Switzerland

015

Gray

Yes

United Kingdom

016

Green

No

Configuring the firmware code
There are two ways in which the European firmware code on the
Aztech AT3300 audio fax/data modem can be configured: by using the
floppy disk utility, or manually with the HyperTerminal application.

English 137

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

Aztech AT3300 Localisation Utility
The Aztech AT3300 Localisation Utility floppy disk automatically
determines which firmware country code is configured on the Aztech
AT3300 audio fax/data modem, and has the possibility to modify the
configuration.

Using the Aztech AT3300 Localisation Utility
To use the Aztech AT3300 Localisation Utility, the system must be first
shutdown, then rebooted on the Aztech 3300 Localisation Utility floppy
disk.
When the reboot has completed, the Localisation Utility main menu will
appear:
Aztech AT3300 Localisation Utility
1 - Show current firmware country settings
2 - Set firmware’s country setting
Q - Quit
Pick a command →

Option 1 - shows the current firmware country code setting on the
Aztech AT3300 audio fax/data modem. A screen similar to the following
example will be displayed:
CURRENT COUNTRY CODE SETTING IS:
Portugal (modem country code 012) ; Jumper block colour should be BLUE
Press a key to return to the main menu ...

Option 2 - allows you to modify the country code setting to the desired
configuration. Refer to the table on page 137 for the different country
code settings.

138 English

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

SELECT THE COUNTRY:
A
B
C
D
E
F
G
H
I
J
K
L
M

Belgium
Denmark
Finland
France
Germany
Italy
Netherlands
Norway
Portugal
Spain
Sweden
Switzerland
United Kingdom

Q

Quit

which country →

1 Enter the letter that corresponds to the country to be configured.
The message,
“Please wait, reprogramming the modem”
will be displayed while the Audio Fax/Data Modem is
reconfigured.
2 A window will then be displayed, indicating the modem firmware
country code that has been set for the selected country, and the
jumper block color setting.
3 To leave the Aztech AT3300 Localisation Utility:
Remove the Aztech AT3300 Localisation Utility floppy disk.
and

to reboot the PC.

English 139

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

4 After installing and localizing the Aztech AT3300 audio fax/data
modem, you must then re-install the Mediatrends Quip software,
since its license requires the card’s identification. For details, see the
Localization Instructions and Replacement Instructions notices
which accompany the replacement card.
NOTE

Re-installing the Mediatrends Quip software requires the user password
and a recorded blank message (this is the case, if no previous message
has been recorded).

Using the HyperTerminal Application
By using the HyperTerminal application supplied with Windows 95, you
can manually localize the firmware code for European configurations.
To use the HyperTerminal application:
•

Click the Start button, point to Programs, then Accessories, then
select HyperTerminal.

•

Double click the Hypertrm.exe icon, and enter the name:
AT3300 test

•

Then click OK.

The Phone Number dialog box will then be displayed.
•

Enter 11 in the Phone number box.

•

Then click OK.

The Connect dialog box will then be displayed. Click cancel. Access to
the HyperTerminal session will then follow, indicating its name
(AT3300 test), as defined earlier.

140 English

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

Enter the following AT commands to verify or change the firmware
country code:
Modem
Response

Comments

tests that the PC and modem can
communicate.

OK

modem confirmation

ATE1

enables character echo so that the
modem commands appear on the
screen.

OK

modem confirmation

ATI5

shows the current country code.

xxx

current code
configuration is
displayed

OK

modem confirmation.

AT Command

Comments

AT

AT*NCxxx

where xxx is the three digit firmware
country code, as shown in the table on
page 137.

OK

modem confirmation.

ATZ

resets the modem to the new
configuration.

OK

modem confirmation.

ATI5

verifies the current country code.

xxx

current code
configuration is
displayed

OK

modem confirmation.

When you have finished, the HyperTerminal session can be saved and
used again, or you can exit without saving the session.

English 141

6 Aztech AT3300 Audio Fax/Data Modem
European Firmware and Telephone Line Configuration

142 English

Index

A
AT commands, 141
audio data/fax modem
configuration, 137–141
current firmware country code, 138
European firmware, 137
features, 135–136
firmware code, 137
firmware country code, 137
jumper block color, 137
Localisation Utility, 138–140
localize firmware code
using HyperTerminal, 140
pulse dialing, 137
audio fax/data modem
communications options, 135
introduction, 134
line speeds, 135
service providers, 134
standards, 134
telephone line, 135
Aztech AT3300
current firmware country code, 138
firmware country code, 137
jumper block color, 137
pulse dialing, 137
Aztech AT3300 Localisation Utility
configuring, 139
country code setting, 138
exit, 139
how to use the utility, 138
introduction, 138
main menu, 138
Mediatrends Quip, 140
software license, 140
B
bibliography
online Acrobat Reader files
Advanced Setup Guide, 4
Familiarization Guide, 4
Upgrade Guide, 4
Service Handbook, 4
BIOS version (version GJ.07.xx)
beep codes, 114
BIOS I/O map, 105
DMA channel controllers, 106
error messages, 113

I/O Addresses, 104
interrupt controllers, 107
pci interrupt request lines, 108
Power-On Self Test, 109–110
Setup program, 100–103
shadow RAM, 109
system board components, 106–108
system memory map, 104
BIOS version (version GJ.07.xx)
Setup program
configuration menu, 101–102
main menu, 100
power menu, 102
preferences, 101
security menu, 102
summary menu, 103
BIOS version (version GX.07.xx)
beep codes, 99
BIOS I/O port map, 91
DMA channel controllers, 92
error messages, 97–98
I/O Addresses, 90
interrupt controllers, 93
overview, 85
PCI interrupt request lines, 94
Power-On Self Test, 94–95
Setup program, 85–89
configuration menu, 86–87
main menu, 85–86
power menu, 88
security menu, 87–88
summary menu, 88–89
system board components, 92–94
system memory map, 90
C
CD-ROM drive
specifications, 25
communications option features
data modem throughput, 135
comparison table
desktop and minitower packages, 17
configuring European firmware
code, 137
D
DB15 VGA connector, 132
desktop and minitower packages

comparison table, 17
main features, 17
physical characteristics, 21
power consumption, 23
principal features, 20
H
HP Dynamic video feature, 118
HP service part numbers
D3657-63001, 14
D3661-63001, 14
D4051-63001, 14
HP/Phoenix BIOS
(version GJ.07.xx), 100–114
(version GX.07.xx), 85–99
check-sum, 83
description, 82
Little Ben, 84
overview, 82
updating the system ROM, 82–83
HyperTerminal Application, 140
I
introduction
HP service part numbers, 14
M
Matrox MGA Millennium
further information, 131
Matrox MGA video controller
BIOS, 131
features, 127
MGA connectors, 128
resolutions, 129
supported resolutions, 130
Matrox MGA video memory, 128
Matrox VESA connector, 128
MGA-2064W processor, 127
P
peripheral connections
rear panel, 24
Phoenix BIOS manual
ordering information, 3
physical characteristics
desktop and mintower, 21

143

Index

R
rear panel
display connector, 24
keyboard socket, 24
mouse socket, 24
parallel device socket, 24
serial device connectors, 24
rear panel connectors
minitower and desktop, 24
S
S3 Trio 64
extended VGA modes (1 MB), 122
extended VGA modes (2 MB), 125
standard VGA modes, 121
video memory, 121
video modes, 121
S3 Trio 64 chip
video controller summary, 120
service part number
D4051-63001Super I/O chip
(NS 87308 and NS 87307)
keyboard and mouse controller, 55
service part number D4051-63001
advanced power management, 47
cache memory, 44
Level-1, 45
Level-2, 45
data integrity, 47
desktop backplane, 42
dynamic branch prediction, 46
floating point unit, 46
IDE to PCI, 49
instruction and data cache, 46
main memory, 44
main memory physical layout, 41
main memory sockets, 41
minitower backplane, 43
model tables
desktop, 28
minitower, 28
Pentium processor, 45
processor socket, 41
SiS 6205 video controller, 48
features, 48
superscalar architecture, 46
system board
architectural view, 30

144

system board switches
cache jumper, 40
CPU bus, 39
space-bar power-on, 40
SW1 switch, 38
SW2 switch, 39
service part numbers
D3657-63001 and D3661-63001
advanced power management, 68
cache memory
Level-1, 73
Level-2, 73
desktop backplane, 68
expansion cards, 77, 80
IDE controller, 76
main memory, 74
main memory sockets, 67
minitower backplane, 69
model tables, 58
PCI chipset
data path unit chips
(SB82438FX), 62, 64
PCI/ISA bridge chip
(SB82371FB), 62, 65, 78
PL/PCI bridge chip
(SB82437FX-66), 62, 63, 75
Pentium processor, 70
bus frequencies, 72
data integrity, 72
dynamic branch prediction, 71
floating point unit, 71
instruction and data cache, 71
superscalar architecture, 70
processor socket, 67
product tables, 58
serial EEPROM, 79
Super I/O chip (SMC FDC37C932), 78
floppy drive controller, 79
keyboard and mouse
controller, 79
real-time clock, 79
serial and parallel
communications ports, 78
system board
architectural view, 60
configuration switches, 66
physical layout, 61
system ROM, 80

video controller, 75
VRM socket, 67
SiS 5511 chip
feature summary, 35
Host/PCI Bridge, 34
main features, 34
SiS 5512 chip
Data Path, 36
main features, 36
SiS 5513 chip
DMA controller, 37
interrupt controller, 37
ISA bus controller, 37
main features, 37
timer counter, 37
SiS 6205 chip
supported Windows 95 video
resolutions, 118
video controller summary, 116
SiS chipset
overview, 32
system board
block diagram, 31
system board architectural view, 30
speakerphone options, 135
super I/O chip
(NS 87308 and NS 87307)
feature summary, 53
features, 52
floppy drive, 55
serial ports, 54
system board using
Unified Memory Architecture, 28
system characteristics
physical, 21
power consumption, 23
system features
comparison table, 17
system overview
D3657-63001 desktop models, 16
D3657-63001 minitower models, 16
D3657-63001 models, 16
D3661-63001 minitower models, 17
D3661-63001 models, 17
D4051-63001 desktop models, 15
D4051-63001 minitower models, 15
D4051-63001 models, 15

Index

T
Typical Windows 95 resolutions
S3 Trio 64 video controller, 125
SiS 6205 video controller, 118
U
UMA
upgrading video memory, 117
using the HP Dynamic video
feature, 118
Unified Memory Architecture
system board overview, 28
V
video controllers
Integrated Ultra VGA, 120–125
Matrox MGA Millennium, 127–131
SiS 6205, 116–118
video modes
extended (S3 Trio 64) VGA modes
(1 MB), 122
extended (S3 Trio 64) VGA modes
(2 MB), 125
S3 Trio 64, 121
standard (S3 Trio 64)
VGA modes, 121
video subsystem
S3 Trio 64, 120
SiS 6205 chip, 116

145

Index

146



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