Nec IMAGE P100E, IMAGE P90E user Manual

PROPRIETARY NOTICE AND LIABILITY DISCLAIMER

The information disclosed in this document, including all designs and related materials, is
the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its li­censors, as appropriate, reserve all patent, copyright and other proprietary rights to this
document, including all design, manufacturing, reproduction, use, and sales rights thereto,
except to the extent said rights are expressly granted to others.

The NEC product(s) discussed in this document are warranted in accordance with the terms
of the Warranty Statement accompanying each product. However, actual performance of
each such product is dependent upon factors such as system configuration, customer data,
and operator control. Since implementation by customers of each product may vary, the
suitability of specific product configurations and applications must be determined by the
customer and is not warranted by NEC.

To allow for design and specification improvements, the information in this document is
subject to change at any time, without notice. Reproduction of this document or portions
thereof without prior written approval of NEC is prohibited.

Image and MultiSync are U.S. registered trademarks of NEC Technologies, Inc.
FastFacts and NEC SVGA are U.S. trademarks of NEC Technologies, Inc.
All other product, brand, or trade names used in this publication are the trademarks or registered

trademarks of their respective trademark owners.

First Printing — February 1995

Copyright 1995 Copyright 1995

NEC Technologies, Inc. NEC Corporation

1414 Massachusetts Avenue 7-1 Shiba 5-Chome, Minato-Ku

Boxborough, MA 01719 Tokyo 108-01, Japan

All Rights Reserved All Rights Reserved

Contents

Preface............................................................................................................................. xv

Abbreviations.................................................................................................................. xvii

Section 1 Technical Information

System Unit..................................................................................................................... 1-1

System Board........................................................................................................... 1-2

Chipset............................................................................................................. 1-6

PCI and Memory Controller (PCMC).................................................... 1-6

Local Bus Accelerators .......................................................................... 1-6

PCI-EISA Bridge Component................................................................ 1-7

EISA System Component (ESC)............................................................ 1-7

Bus Architecture.............................................................................................. 1-7

Host Bus....................................................................................................... 1-8

iii

PCI Bus ........................................................................................................ 1-9

EISA Bus...................................................................................................... 1-9

XD Bus......................................................................................................... 1-9

System Memory Bus.................................................................................... 1-9

Processor.......................................................................................................... 1-9

Secondary Cache.............................................................................................. 1-10

Flash ROM....................................................................................................... 1-10

On-Board Peripherals ...................................................................................... 1-12

SCSI Circuitry.............................................................................................. 1-12

IDE Controller.............................................................................................. 1-12

Video Circuitry............................................................................................. 1-12

EISA SRAM................................................................................................. 1-12

Real-Time Clock (RTC)............................................................................... 1-13

System I/O Controller...................................................................................... 1-13

I/O Mapping..................................................................................................... 1-13

NEC Proprietary Ports..................................................................................... 1-15

Keyboard Controller Ports............................................................................... 1-20

System Memory............................................................................................... 1-21

Interrupt Controller.......................................................................................... 1-22

Video Controller.............................................................................................. 1-23

Video Memory................................................................................................. 1-23

EISA Bus ......................................................................................................... 1-23

iv Contents

PCI Local Bus.................................................................................................. 1-26

PCI Auto Configuration................................................................................... 1-26

Parallel Interface.............................................................................................. 1-26

Serial Interface................................................................................................. 1-27

Indicator Panel ......................................................................................................... 1-28

Power Supply........................................................................................................... 1-28

Diskette Drive.......................................................................................................... 1-28

Hard Disk Drive....................................................................................................... 1-28

Quad-Speed IDE CD-ROM Reader......................................................................... 1-29

Keyboard......................................................................................................................... 1-29

Mouse.............................................................................................................................. 1-30

Section 2 Setup and Operation

Unpacking and Repacking .............................................................................................. 2-1

Setup................................................................................................................................ 2-2

Power On......................................................................................................................... 2-4

Setting System Parameters.............................................................................................. 2-5

Setup Utility.................................................................................................................... 2-6

How to Start Setup................................................................................................... 2-7

How to Use Setup .................................................................................................... 2-7

Menu Bar ......................................................................................................... 2-8

Legend Bar....................................................................................................... 2-9

Item Specific Help Window ............................................................................ 2-10

General Help Window..................................................................................... 2-10

Main Menu Options......................................................................................... 2-10

IDE Adapters ................................................................................................... 2-12

Memory Cache................................................................................................. 2-14

Memory Shadow.............................................................................................. 2-14

Boot Sequence ................................................................................................. 2-15

Numlock .......................................................................................................... 2-15

Contents v

Advanced Menu....................................................................................................... 2-17

Integrated Peripherals Menu............................................................................ 2-18

Advanced Chipset Control............................................................................... 2-20

Plug and Play OS Parameters .......................................................................... 2-21

PCI Device Parameters.................................................................................... 2-22

Large Disk Access ........................................................................................... 2-23

Security Menu.......................................................................................................... 2-23

Edit Supervisor Information Parameters.......................................................... 2-25

Edit User Information Parameters ................................................................... 2-26

Exit Menu ................................................................................................................ 2-27

Save Changes & Exit....................................................................................... 2-27

Discard Changes & Exit .................................................................................. 2-27

Get Default Values........................................................................................... 2-27

Load Previous Values...................................................................................... 2-28

Save Changes................................................................................................... 2-28

Guide for Configuring Expansion Devices.............................................................. 2-29

EISA Configuration Utility...................................................................................... 2-32

The ECU.......................................................................................................... 2-32

When to Use the ECU...................................................................................... 2-33

How to Load the ECU ..................................................................................... 2-33

How to Use the ECU ....................................................................................... 2-34

Configure Computer or Peripheral Devices..................................................... 2-35

Advanced Menu........................................................................................... 2-41

PCI IDE Controller....................................................................................... 2-42

PCI SCSI Controller and SCSI Termination................................................ 2-43

Shadowing and Caching Features................................................................ 2-43

Set Date and Time ........................................................................................... 2-44

Maintain System Configuration Diskette ........................................................ 2-44

Exit................................................................................................................... 2-45

PCI Devices and Plug and Play ISA Boards.................................................... 2-45

ISA Boards without CFG Files........................................................................ 2-46

SCSI Select Utility................................................................................................... 2-51

Configure/View Host Adapter Settings........................................................... 2-52

SCSI Disk Utilities .......................................................................................... 2-54

System Security........................................................................................................ 2-55

Asset Management........................................................................................... 2-55

Audit Log......................................................................................................... 2-55

vi Contents

Login IDs and Passwords................................................................................. 2-56

Multiple Logins................................................................................................ 2-56

Network Boot................................................................................................... 2-56

System Board Switch and Jumper Settings..................................................................... 2-57

Switch Settings......................................................................................................... 2-57

Jumper Settings........................................................................................................ 2-59

Primary Cache Jumper (J33)............................................................................ 2-59

Instruction Pipeline Jumper (J34).................................................................... 2-59

Voltage Regulator Jumper (J39)...................................................................... 2-59

Section 3 Options

Internal Options............................................................................................................... 3-1

Cover Removal ........................................................................................................ 3-2

Expansion Board(s).................................................................................................. 3-4

Expansion Board Troubleshooting .......................................................................... 3-5

System Board Options ............................................................................................. 3-6

Dual Processor Installation.............................................................................. 3-7

Dual Processor Troubleshooting...................................................................... 3-12

SIMM Configurations...................................................................................... 3-12

SIMM Installation............................................................................................ 3-16

SIMM Troubleshooting ................................................................................... 3-19

Installing Optional Storage Devices......................................................................... 3-20

Device Slots..................................................................................................... 3-20

Diskette Drive Options.................................................................................... 3-21

Diskette Drive Settings.................................................................................... 3-21

Hard Disk Drive Options................................................................................. 3-22

Hard Disk Drive Settings................................................................................. 3-22

IDE Hard Disk Settings................................................................................ 3-22

SCSI Device Settings................................................................................... 3-24

5 1/4-Inch Device Installation.......................................................................... 3-28

Front Panel Assembly Removal................................................................... 3-29

5 1/4-Inch Device Cage Removal ................................................................ 3-32

5 1/4-Inch Device Placement ....................................................................... 3-33

5 1/4-Inch Diskette Drive Cabling............................................................... 3-34

5 1/4-Inch Device Cabling ........................................................................... 3-35

Finishing Up 5 1/4-Inch Storage Device Installation........................................... 3-36

Contents vii

Internal 3 1/2-Inch Drive Installation....................................................................... 3-36

3 1/2-Inch Drive Cage Removal...................................................................... 3-37

3 1/2-Inch Drive Placement............................................................................. 3-37

IDE Hard Disk Drive Cabling.......................................................................... 3-38

SCSI Hard Drive Cabling................................................................................ 3-39

Finishing Internal 3 1/2-Inch Drive Installation....................................................... 3-40

Device Troubleshooting........................................................................................... 3-41

Monitor Option ............................................................................................................... 3-42

Monitor Troubleshooting................................................................................................ 3-43

Section 4 Troubleshooting and Repair

Service............................................................................................................................. 4-1

Technical Support.................................................................................................... 4-2

Product Information................................................................................................. 4-2

BIOS Customize Utility.................................................................................................. 4-3

BIOS Update Utility........................................................................................................ 4-3

Error Messages......................................................................................................... 4-5

Asset Management Identification.................................................................................... 4-5

Maintenance.................................................................................................................... 4-7

Routine Checks........................................................................................................ 4-7

System Unit Cleaning .............................................................................................. 4-7

Keyboard Cleaning................................................................................................... 4-8

Mouse Cleaning....................................................................................................... 4-9

Troubleshooting .............................................................................................................. 4-10

Diagnosing and Solving Problems........................................................................... 4-10

Diagnostic Output and Beep Codes......................................................................... 4-14

Disassembly and Reassembly ......................................................................................... 4-18

Top Cover Removal................................................................................................. 4-19

Expansion Board Removal ...................................................................................... 4-21

Front Panel Assembly Removal............................................................................... 4-22

Power Button Cover Removal................................................................................. 4-23

Slot Cover and Metal Cover Plate Removal............................................................ 4-24

Speaker Assembly Removal .................................................................................... 4-26

Memory Expansion Board Removal........................................................................ 4-27

5 1/4-Inch Device Cage Removal............................................................................ 4-29

5 1/4-Inch Device Removal ..................................................................................... 4-30

3 1/2-Inch Hard Disk Drive Removal...................................................................... 4-31

viii Contents

3 1/2-Inch Diskette Drive Removal......................................................................... 4-33

Power Supply Removal............................................................................................ 4-35

Real-Time Clock Battery Removal.......................................................................... 4-36

System Board Removal............................................................................................ 4-37

Illustrated Parts Breakdown..................................................................................... 4-39

Appendix A Specifications

System Unit Specifications ............................................................................................. A-1

Power Supply Specifications........................................................................................... A-3

Diskette Drive Specifications.......................................................................................... A-3

Hard Disk Drive Specifications ...................................................................................... A-5

CD-ROM Specifications................................................................................................. A-7

Appendix B Connector Pin Assignments

Serial Interface Connectors............................................................................................. B-3

Parallel Interface Connector............................................................................................ B-4

VGA Interface Connector ............................................................................................... B-5

Power Supply Connectors............................................................................................... B-5

Speaker Connector.......................................................................................................... B-6

Keyboard and Mouse Connectors ................................................................................... B-6

Power Lamp Connector................................................................................................... B-6

Hard Disk Drive Busy Lamp Connector......................................................................... B-7

Fan Connector................................................................................................................. B-7

Reset Button Connector .................................................................................................. B-7

Diskette Drive Interface Connector................................................................................. B-8

IDE Interface Connectors................................................................................................ B-9

SCSI Interface Connector................................................................................................ B-10

SIMM Sockets................................................................................................................. B-11

IMA Connector ............................................................................................................... B-12

PCI Expansion Bus Connector........................................................................................ B-12

Contents ix

List of Figures

1-1 Image P90E and Image P100E System Unit Components ............................... 1-2

1-2 Component Block Diagram.............................................................................. 1-7

1-3 EISA Connector................................................................................................ 1-24

1-4 Quad-Speed IDE CD-ROM Reader.................................................................. 1-29

2-1 Voltage Selector Switch.................................................................................... 2-2

2-2 Peripheral Connections..................................................................................... 2-3

2-3 Indicators, Reset Button, and Power Button..................................................... 2-4

2-4 ECU Main Menu............................................................................................... 2-34

2-5 System Board Jumpers...................................................................................... 2-57

3-1 Cover Screws.................................................................................................... 3-2

3-2 Removing the Cover......................................................................................... 3-3

3-3 Expansion Slots ................................................................................................ 3-4

3-4 System Board Option Sockets .......................................................................... 3-6

3-5 Dual Processor Upgrade ZIF Socket and Jumpers............................................ 3-8

3-6 Dual Processor Upgrade Jumper Settings......................................................... 3-9

3-7 Aligning the Upgrade Processor....................................................................... 3-10

3-8 Installing the Heat Sink..................................................................................... 3-11

3-9 Memory Expansion Board SIMM Banks ......................................................... 3-13

3-10 Memory Expansion Board Removal................................................................. 3-16

3-11 Notched End of SIMM ..................................................................................... 3-16

3-12 Inserting the SIMM........................................................................................... 3-17

3-13 Memory Expansion Board Installation............................................................. 3-18

3-14 Accessible Storage Device Slot Locations ....................................................... 3-20

3-15 3 1/2-Inch, 1.44-MB Diskette Drive................................................................. 3-21

3-16 5 1/4-Inch, 1.2-MB Diskette Drive................................................................... 3-22

3-17 1-GB IDE Hard Disk Drive Jumper Settings.................................................... 3-23

3-18 SCSI Terminations for Internal Configurations................................................ 3-25

3-19 SCSI Terminations for Internal and External Configurations .......................... 3-25

3-20 2-GB SCSI Hard Disk Jumper Settings............................................................ 3-26

3-21 Quad-Speed CD-ROM Reader Jumper Settings............................................... 3-28

3-22 Removing the Front Panel Screws.................................................................... 3-29

3-23 Removing the Slot Covers................................................................................ 3-30

3-24 Cover Plate Removal........................................................................................ 3-31

3-25 Removing the Device Cage Screws.................................................................. 3-32

x Contents

3-26 5 1/4-Inch Device Screws................................................................................. 3-33

3-27 5 1/4-Inch Diskette Drive Cables...................................................................... 3-34

3-28 SCSI or IDE Device Cabling............................................................................ 3-35

3-29 Removing 3 1/2-Inch Drive Cage Screws ........................................................ 3-37

3-30 Securing the Drive in the 3 1/2-Inch Drive Cage.............................................. 3-38

3-31 Hard Disk Drive Cables.................................................................................... 3-39

3-32 Internal SCSI Hard Disk Cabling ..................................................................... 3-40

3-33 Monitor Connections........................................................................................ 3-43

4-1 Removing the Keyboard Enclosure.................................................................. 4-8

4-2 Removing the Mouse Ball Cover...................................................................... 4-9

4-3 Cover Screws.................................................................................................... 4-20

4-4 Removing the Cover......................................................................................... 4-20

4-5 Expansion Slot Screw....................................................................................... 4-21

4-6 Front Panel Screws ........................................................................................... 4-22

4-7 Power Button Tabs ........................................................................................... 4-23

4-8 Slot Cover Removal.......................................................................................... 4-24

4-9 Metal Cover Plate Removal.............................................................................. 4-25

4-10 Speaker Tabs..................................................................................................... 4-26

4-11 Memory Expansion Board Removal................................................................. 4-27

4-12 SIMM Removal ................................................................................................ 4-28

4-13 Removing the Device Cage Screws.................................................................. 4-29

4-14 5 1/4-Inch Device Screws................................................................................. 4-30

4-15 3 1/2-Inch Hard Disk Drive Cables .................................................................. 4-31

4-16 Removing 3 1/2-Inch Drive Cage Screws ........................................................ 4-32

4-17 3 1/2-Inch Hard Disk Drive Screws.................................................................. 4-32

4-18 3 1/2-Inch Diskette Drive Cables...................................................................... 4-33

4-19 Diskette Drive Bracket Screws......................................................................... 4-34

4-20 Diskette Drive Screws ...................................................................................... 4-34

4-21 Power Button Screws........................................................................................ 4-35

4-22 Power Supply Screws ....................................................................................... 4-36

4-23 Real-Time Clock Battery.................................................................................. 4-37

4-24 System Board Connectors and Screws ............................................................. 4-38

4-25 Image P90E/P100E Illustrated Parts Breakdown.............................................. 4-41

Contents xi

B-1 System Board Layout........................................................................................ B-1

B-2 Serial Interface (P3/P5)..................................................................................... B-3

B-3 Parallel Interface (P2)....................................................................................... B-4

B-4 Power Supply Connector (J17, J21, J31).......................................................... B-5

List of Tables

1-1 System Board Chips.......................................................................................... 1-5

1-2 System Memory Map........................................................................................ 1-10

1-3 Flash ROM Selection Bits................................................................................ 1-11

1-4 I/O Address Map............................................................................................... 1-14

1-5 Interrupt Level Assignments............................................................................. 1-22

1-6 DMA Cycles and Compatible DMA Devices................................................... 1-25

1-7 Parallel Port Addressing and Interrupts............................................................ 1-26

1-8 Serial Port Addressing and Interrupts............................................................... 1-27

2-1 Setup Key Functions......................................................................................... 2-9

2-2 Main Menu Parameters..................................................................................... 2-11

2-3 IDE Hard Disk Parameters................................................................................ 2-13

2-4 Memory Cache Parameters............................................................................... 2-14

2-5 Memory Shadow Parameters............................................................................ 2-15

2-6 Boot Parameters................................................................................................ 2-15

2-7 Numlock and Keyboard Parameters ................................................................. 2-16

2-8 Integrated Peripherals Parameters..................................................................... 2-18

2-9 Monitor Types................................................................................................... 2-19

2-10 Advanced Chipset Control Parameters............................................................. 2-20

2-11 Plug and Play Parameters.................................................................................. 2-22

2-12 PCI Device Parameters..................................................................................... 2-22

2-13 Large Disk Parameters...................................................................................... 2-23

2-14 System Security Parameters.............................................................................. 2-24

2-15 Edit Supervisor Information Parameters........................................................... 2-25

2-16 Edit User Information Parameters .................................................................... 2-26

2-17 Quick Reference to Configuring Expansion Devices....................................... 2-29

2-18 EISA Configuration Utility Parameters............................................................ 2-40

2-19 SCSI Device Configuration Options................................................................. 2-53

2-20 Advanced Configuration Options..................................................................... 2-54

2-21 System Configuration Switch........................................................................... 2-58

2-22 Cache, Pipeline, and Voltage Regulator Settings ............................................. 2-60

xii Contents

3-1 Expansion Board Problems and Solutions........................................................ 3-5

3-2 Dual Processor Problems and Solutions........................................................... 3-12

3-3 SIMM Configurations....................................................................................... 3-14

3-4 SIMM Upgrade Problems and Solutions.......................................................... 3-19

3-5 2-GB SCSI Hard Disk SCSI ID Settings.......................................................... 3-27

3-6 Optional 5 1/4-Inch Device Problems and Solutions........................................ 3-42

3-7 Monitor Problems and Solutions...................................................................... 3-45

4-1 NEC Service and Information Telephone Numbers......................................... 4-1

4-2 BIOS Update Utility Error Messages................................................................ 4-5

4-3 Problems and Solutions .................................................................................... 4-10

4-4 Diagnostic Output and Beep Codes.................................................................. 4-14

4-5 Image P90/P100E Disassembly Sequence........................................................ 4-18

4-6 Image P90/P100E Field-Replaceable Parts List .............................................. 4-39

4-8 Image P90E/P100E Options ............................................................................. 4-42

4-9 Image P90E/P100E Documentation and Packaging......................................... 4-43

A-1 System Unit Specifications............................................................................... A-1

A-2 Power Supply Input Requirements ................................................................... A-3

A-3 Power Supply Output Specifications................................................................ A-3

A-4 Specifications for Diskette Drives.................................................................... A-3

A-5 Specifications for 1-GB Hard Disk Drives....................................................... A-5

A-5 Specifications for 2-GB Hard Disk Drives....................................................... A-6

A-7 Quad-Speed IDE CD-ROM Specifications ...................................................... A-7

B-1 System Board Connector Descriptions............................................................. B-2

B-2 Video Connector (P1) Pin Assignments........................................................... B-5

B-3 Speaker Connector (J10) Pin Assignments....................................................... B-6

B-4 Keyboard /Mouse (P4) Connector Pin Assignments........................................ B-6

B-5 Power Lamp Connector (J12) Pin Assignments............................................... B-6

B-6 Hard Disk Drive Lamp Connector (J11) Pin Assignments............................... B-7

B-7 Fan Connector (J6, J7) Pin Assignments.......................................................... B-7

B-8 Reset Button Connector (J4) Pin Assignments................................................. B-7

B-9 Diskette Drive Connector (J2) Pin Assignments.............................................. B-8

Contents xiii

B-10 IDE Connector (J30/J32) Pin Assignments...................................................... B-9

B-11 SCSI-2 Port (J14) Pin Assignments.................................................................. B-10

B-12 SIMM Socket Pin Assignments........................................................................ B-11

B-13 IMA Connector (J38) Pin Assignments............................................................ B-12

B-14 PCI Expansion Slot Pin Assignments............................................................... B-12

xv

Preface

This service and reference manual contains the technical information necessary to set up,
maintain, troubleshoot, and repair the NEC Image® P90E and Image P100E computer
systems. It also provides hardware and interface information for users who need an
overview of the computer system design. The manual is written for NEC-trained customer
engineers, system analysts, service center personnel, and dealers.

The manual is organized as follows:
Section 1, Technical Information, provides an overview of the computer features,

hardware design, interface ports and internal devices.
Section 2, Setup and Operation, takes the user from unpacking to setup and operation.

Included is a description of the system configuration, system password, and the computer’s
jumper settings, including the factory default settings.

Section 3, Options, provides the user with installation and troubleshooting information for
each specific option.

Section 4, Troubleshooting and Repair, includes a list of NEC service information and
telephone numbers that provide access to the NEC Bulletin Board System (BBS),
FastFacts, and Technical Information Bulletins. Included are maintenance, troubleshooting,
and disassembly and reassembly information along with an illustrated parts breakdown.

Appendix A, Specifications, provides specifications for the system unit, power supply,
diskette drives, hard disk drives, and CD-ROM reader.

Appendix B, Connector Pin Assignments, provides a list of the system board internal
connector pin assignments and a list of external pin assignments for the keyboard/mouse,
serial, parallel, video, PCI IDE, and SCSI-2 ports.

Abbreviations

xvii

A ampere
AC alternating current
AT advanced technology

(IBM PC)

BBS Bulletin Board System
BCD binary-coded decimal
BCU BIOS Customized Utility
BIOS basic input/output system
bit binary digit
BUU BIOS Upgrade Utility
bpi bits per inch
bps bits per second
C capacitance
C centigrade
Cache high-speed buffer storage
CAM constantly addressable memory
CAS column address strobe
CD-ROM compact disk-ROM
CG character generator
CGA Color Graphics Adapter
CGB Color Graphics Board
CH channel
clk clock
cm centimeter
CMOS complementary metal oxide

semiconductor

COM communication
CONT contrast
CPGA ceramic pin grid array
CPU central processing unit
DAC digital-to-analog converter
DACK DMA acknowledge
DC direct current
DIP dual in-line package
DLAB Divisor Latch Address bit
DMA direct memory access

DMAC DMA controller
DOS disk operating system
DRAM dynamic RAM
DTE data terminal equipment
ECC error checking and correction
EGA Enhanced Graphics Adapter
EISA Extended Industry Standard

Architecture

E-mail electronic mail
EPA Environmental Protection

Agency

EPROM erasable and programmable

ROM

EVGA Enhanced Video Graphics

Array

F Fahrenheit
FAX facsimile transmission
FCC Federal Communications

Commission

FG frame ground
FM frequency modulation
FRU field-replaceable unit
GB gigabyte
GND ground
HEX hexadecimal
HGA Hercules Graphics Adapter
Hz hertz
IC integrated circuit
ID identification
IDE intelligent device electronics
IDTR interrupt descriptor table

register

IMA Image Memory Access
in. inch
IPB illustrated parts breakdown
IRR Interrupt Request register
ISA Industry Standard Architecture

xviii Abbreviations

ISR In Service register
I/O input/output
IPC integrated peripheral controller
ips inches per second
IRQ interrupt request
K kilo (1024)
k kilo (1000)
KB kilobyte
kg kilogram
kHz kilohertz
lb pound
LED light-emitting diode
LSB least-significant bit
LSI large-scale integration
M mega
mA milliamps
max maximum
MB megabyte
MDA Monochrome Display Adapter
MFM modified frequency

modulation

MHz megahertz
mm millimeter
ms millisecond
MSB most-significant bit
NASC National Authorized Service

Center

PIO programmable input/output
pixel picture element
PLCC plastic lead chip carrier
PLL phase lock loop
p-p peak-to-peak
PPI programmable peripheral

interface

PPB PCI-to-PCI Bridge
PROM programmable ROM
QFP quad flat pack
RAM random-access memory
RAMDAC RAM digital-to-analog
RAS row address strobe
RGB red green blue
RGBI red green blue intensity
ROM read-only memory
rpm revolutions per minute
R read
R/W read/write
S slave
SCSI Small Computer System

Interface

SG signal ground
SIMM single inline memory module
SVGA Super Video Graphics Array
SW switch

TAC Technical Assistance Center
NC not connected
NMI Non-maskable Interrupt
ns nanosecond
NSRC National Service Response

Center

PAL programmable array logic
PC personal computer
PCB printed circuit board
PCI Peripheral Component

Interconnect

PFP plastic flat package

TSC Technical Support Center

TTL transistor/transistor logic

tpi tracks per inch

V volt

Vdc volts, direct current

VESA video electronics standards

association

VGA Video Graphics Array

VRAM virtual RAM

W watt

W write

Abbreviations xix

Section 1

Technical Information

This section provides an overview of the Image® P90E and Image P100E enhanced
minitower computers. These computers use Intel® Pentium™ microprocessors in a
PCI/EISA bus architecture designed for workstation environments. Basic hardware
includes a system unit, keyboard, and mouse. External interface connectors are located in
the rear of the system unit and are identified in Section 2, Setup and Operation. Section 2
also provides system configuration switch settings and jumper settings for all hardware.
Appendix A provides system specifications.

SYSTEM UNIT

The system unit chassis provides an enclosure for the system board, power supply, six
storage device slots, and five-expansion-slots.

The storage device slots accommodate a standard 3 1/2-inch diskette drive, plus two
internal 3 1/2-inch slots configured as follows:

n one 3 1/2-inch x 1.0-inch device bay
n one 3 1/2-inch x 1.6 inch device bay

In addition, the system unit supports three 5 1/4-inch accessible storage devices (1.6-inch
height).

System configurations are available with a 3 1/2-inch diskette drive only or a 3 1/2-inch
diskette drive, internal 3 1/2-inch hard disk drive, and an Intelligent Device Electronics
(IDE) CD-ROM reader (leaving two 5 1/4-inch accessible storage device bays and one
internal 3 1/2-inch slot available for optional devices). A system unit is shown in Figure
Section 1-1.

All hard disk configurations come with an IDE CD-ROM reader and support both the
SCSI-2 Peripheral Component Interconnect (PCI) or enhanced IDE device interface for fast
data storage and retrieval.

1-2 Technical Information

System Unit

Mouse

Power Cord

Keyboard

Figure Section 1-1 Image P90E and Image P100E System Unit Components

System Board

The system board contains the computer’s processing and peripheral control circuitry, as
well as the sockets for connecting memory and peripheral devices. Features of the system
board are listed as follows.

n Pentium™ 90-MHz (Image P90E) or 100-MHz (Image P100E) processor
n support for dual processor option

Technical Information 1-3

n support for memory expansion board containing a minimum of 16 megabytes

(MB) of dynamic random access memory (DRAM) in single processor
configurations

 8-slot memory expansion board accepts 36-bit, 70-nano second (ns) single-

inline memory modules (SIMMs)

 memory expandable to a maximum of 256 MB of DRAM using either

1-MB x 36 bit, 2-MB x 36 bit, 4-MB x 36 bit, or 8-MB x 36 bit, 70 ns
SIMMs mounted in the 8-slot memory expansion board (see Section 3 for
memory expansion procedures)

 supports base and extended memory

n 16-kilobyte (KB) primary cache (8 KB data and 8 KB instructions) integrated on

the Pentium processor

n 256-KB synchronous secondary cache in single processor configurations
n high bandwidth PCI local bus

 supports burst modes that send large chunks of data across the bus, allowing

fast displays of high-resolution images

 eliminates data bottlenecks
 maintains maximum performance at high clock speeds
 provides clear upgrade path to future technologies

n Integrated 32-bit bit-block-transfers (BitBLT) graphics accelerator that uses the

PCI local bus
 supports 640 x 480 and 800 x 600 resolutions with 16.8 million colors (24-bit

True Color), and 1024 x 768 resolution with 256 colors

 2-MB of 45 ns video dynamic RAM (VRAM) (eight 256K x 8 chips soldered

on the system board)

 supports a linear frame buffer with full PCI burst write support

1-4 Technical Information

n one Small Computer System Interface (SCSI) connector supporting up to five

internal and 7 external devices (hard disk drives, tape back-up drives, and CD
ROM readers) using the PCI local bus Fast SCSI-2 host adapter

 supports a synchronous data transfer rate of 10 MB per second, which is

twice as fast as the regular SCSI

 supports asynchronous data transfer rates up to 5 MB per second
 supports the common command set (CSS) for compatibility
 supports a command queuing feature that enhances multi-tasking

performance and helps reduce bottlenecks in I/O operations

n two fast PCI-bus enhanced IDE interface connectors (both connectors will

operate two devices)

 one primary IDE connector, used by the hard disk drive
 one secondary IDE connector, used by the IDE CD-ROM reader

 supports up to 11-MB per second 32-bit wide data transfers on the high-

performance PCI local bus

n high-performance EISA bus with full bus mastering capability

 supports 33-MB per second burst mode data transfer rate, increasing the

speed of I/O operations (which is very important for configurations with
multiple storage devices)

 supports up to four EISA devices installed in system board’s EISA expansion

slots

 allows maximum system throughput by distributing the workload to

intelligent subsystems, creating balanced system performance where no one
subsystem impedes the activity of another

 supports downward compatibility with any installed Industry Standard

Architecture (ISA) hardware

n diskette drive interface controlling one or two diskette drives
n expansion board slots providing three EISA/ISA expansion slots, one PCI-bus

expansion slot, and one shared EISA or PCI-bus expansion slot

n system I/O controller integrating, on one chip, the controller functions for the

system’s two serial ports, bidirectional parallel port, and diskette drives

Technical Information 1-5

n external connectors providing an interface for the following external devices:

 video graphics array (VGA)-compatible monitor
 personal system/2 (PS/2®)-style mouse
 PS/2-style keyboard
 PS/2, Enhanced Parallel Port (EPP) and enhanced capabilities port (ECP) are

supported for the parallel printer

 two buffered serial ports

Table Section 1-1 lists the major chips on the system board. See Section 2, Setup and
Operation, for a description of the system board's switches and jumpers. See Appendix B,
Connector Pin Assignments, for a list of the system board connectors.

Table Section 1-1 System Board Chips

Chip Description

Intel Pentium 90- or 100-MHz processor
28F020 256k x 8 flash ROM
Intel Neptune II PCI/EISA Chip Set
S82434NX PCI cache and memory controller (PCMC)
S82433NX Local bus accelerators (LBXs)
S82375SB PCI - EISA bridge component (PCEB)
S82374SB EISA system component (ESC)

Tseng



W32P

PCI0640 CMD PCI IDE interface controller
STG1703 SYNDAC
FDC37C665 Standard MicroSystems System I/O controller
N87C42 Keyboard controller
AIC-7850 Adaptec SCSI-2 controller

PCI video graphics controller

1-6 Technical Information

Chipset

The Image P90E and Image P100E computers use the Intel Neptune II chipset, which
consists of the PCI cache and memory controller (PCMC), two local bus accelerators
(LBXs), the PCI EISA bridge component (PCEB), and the EISA system component (ESC).
Together these five chips control the cache memory, the EISA bus, the BIOS Flash ROM,
the keyboard controller, and the I/O controller. The chipset also contains several I/O ports
that control many aspects of the computer’s hardware operation.

PCI Cache and Memory Controller (PCMC)

The PCMC provides cache control, system memory control, and PCI bus control. An
integrated cache controller supports 256 KB of synchronous SRAM. The PCMC supports
up to 256 MBs of cacheable system memory. The PCI controller enhances system memory
performance by allowing for concurrency between the CPU bus and the PCI bus. For
further details, refer to the Intel Neptune II PCMC and LBX Component Specification.

Local Bus Accelerators (LBXs)

Two LBXs are used to interface the Host bus to the PCI bus and the system memory data
bus. The LBXs provide the following five buffers to increase performance.

n CPU to memory posted write buffer
n PCI to memory posted write buffer
n Memory to PCI read buffer
n CPU to PCI posted write buffer
n CPU to PCI read prefetch buffer

For further details, refer to the Intel Neptune II PCMC and LBX Component Specification.

Technical Information 1-7

PCI-EISA Bridge Component (PCEB)

The PCEB is one of the two chips that connect the PCI bus to to the EISA bus. The PCEB
translates bus protocols from EISA to PCI and vice versa. Extensive buffering of both the
PCI and EISA interface allows for concurrent operations. Address decoding is provided for
both PCI and EISA. For further details, refer to the Intel PCI–EISA Bridge (PCEB)
Component Specification.

EISA System Component (ESC)

The ESC interfaces the PCI bus to the EISA bus. The ESC supplements the PCEB by
implementing such system functions as the Timer/ Counter, DMA and interrupt controllers,
and EISA subsystem control functions (such as the Bus Controller and Bus Arbiter).
Interrupt level assignments are provided later in this section (see “Interrupt Controller”).
For further details, refer to the Intel EISA System Component (ESC) Specification.

Bus Architecture

The interconnection of the major system components via the address and data buses is
shown in Figure Section 1-2. The number range next to each bus arrow indicates the bits
on the bus the arrow represents. Major buses include the host bus, system memory bus, the
PCI bus, the EISA bus, and the XD bus. The function of these buses is described in the
following subsections.

1-8 Technical Information

Figure Section 1-2 Component Block Diagram

Host Bus

The host bus consists of a 32-bit address bus (A<31..0>), a 64-bit data bus (D<63..0>), and
control circuitry. The host bus interfaces the processor to the PCI cache and memory
controller (PCMC), the local bus accelerators (LBXs), and the secondary (L2) cache. Host
bus cycles are initiated by ADS* signals from the processor and terminated by BRDY*
signal from the PCMC. All host bus cycles are monitored by the PCMC and directed to the
cache, system memory, or the PCI bus.

Technical Information 1-9

PCI Bus

The PCI bus consists of a multiplexed address and data bus (AD<31..0>) and control
circuitry. The PCI bus allows industry-standard PCI option boards to interface to the
system. The PCMC and LBXs link the PCI bus to the host bus, and PCI EISA bridge
component (PCEB) links the PCI bus to the EISA bus. PCI is a high bandwidth bus that is
processor independent. The on-board video, IDE, and SCSI controllers are on the PCI bus.

EISA Bus

The EISA bus consists of an address bus (SA<19..0>, LA<31..24>*, and <LA23..2>), a 32­bit data bus (SD<31..0>), and control circuitry. The EISA bus is controlled by the PCEB
and EISA System component (ESC) and provides connection to industry standard
EISA/ISA option boards.

XD Bus

The XD bus (XD<7..0>) is an 8 bit data bus that provides connection to the keyboard
controller, ROM BIOS, and real-time clock (RTC). The XD bus is a buffered version of the
low order 8 bits of the EISA data bus (SD<31..0>). In the Neptune chipset, a distinction is
made between on-board and off-board peripherals. In general, on-board means that access
is expected to occur via the XD bus instead of the EISA bus. In this case, the access still
occurs on the EISA bus, but if the access is a read (I/O or memory), the ESC enables the
XD bus peripheral to drive the lower 8 bits of the EISA data bus (SD<7..0>).

System Memory Bus

The system memory bus consists of 11 bits of row/column addresses (MA<10..0>) that are
buffered to address banks 0, 1, 2, and 3. Each bank consists of two SIMMs. The PCMC
drives the system memory bus and memory control signals, which causes the data to be
driven to/from the LBXs (MD<63..0>).

Processor

The Image P90 system uses a 64-bit, 90-MHz Pentium microprocessor with a 60-MHz
external clock speed. The Image P100E uses a 64-bit, 100-MHz Pentium microprocessor
with a 66-MHz external clock speed. The technology package used for the microprocessor
is the 296-pin, staggered-pin-grid array (SPGA. The processor has 16 KB of write-back
internal cache, 8 KB for instructions and 8 KB for data. Also integrated into the processor
is a math coprocessor for complex calculations and processing tasks.

To use the Pentium processor’s power, the system features an optimized 64-bit memory
interface and complementary 256-KB secondary cache.

The Pentium processor is compatible with all 8-, 16-, and 32-bit software written for the
Intel386™, Intel486™, and Pentium processors.

1-10 Technical Information

The dual processor upgrade option is installed in a 320-pin PGA, zero-insertion-force (ZIF)
socket on the system board.

Secondary Cache

The 16-KB primary cache (8 KB data and 8 KB instruction) is integrated into the
processor. The system board also provides 256 KB of 9-ns, synchronous secondary cache
memory that is external to the processor. Cache memory improves read performance by
holding copies of code and data that are frequently requested from the system memory by
the processor. Cache memory is not considered part of the expansion memory.

The cache is connected directly to the processor address bus (direct mapped) and uses
physical addresses (32-bit line size). A bus feature known as Burst enables fast cache fills.
Memory areas (pages) can be designated as cacheable or non-cacheable by software. The
cache can also be enabled and disabled by software.

The write strategy of the secondary cache is write-back for single processor systems and
write-through for dual processor systems. If the write is a cache hit, an external bus cycle is
generated and information is written to the cache. Any area of memory can be cached in the
system. Non-cacheable portions of memory are defined by software. The cache can be
cleared by software instructions.

Flash ROM

Machine language programs known as the system's basic input/output system (BIOS) are
stored in a 256K x 8 Flash ROM chip (28F020 PLCC) mounted on the system board. The
system BIOS, EISA extensions, PCI extensions, Automatic Configuration Unit (ACU)
loader, and Video BIOS reside in the upper 64K of the ROM area. The lower 64K of ROM
includes the SCSI BIOS and ACU code.

The flash ROM allows the BIOS to be upgraded with the BIOS Update utility without
removing the ROM (see Section 4, Maintenance and Troubleshooting). The BIOS can only
be reprogrammed by powering on the system with the BIOS Update utility diskette in
drive A.

The BIOS programs execute the Power-On Self-Test (POST), initialize the processor
controllers, and interact with the display, diskette drives, hard disks, communication
devices, and peripherals. The system BIOS also contains the Setup program and provides
VGA controller support. The ROM BIOS is always copied into RAM (shadowing) for
maximum performance.

System BIOS is located between E0000h-FFFFFh and supports shadowing and shadowed
memory. System BIOS is write protected and automatically enabled.

The video BIOS is combined with the system BIOS and is located between C0000h and
C7FFFh. The system memory map is shown in Table Section 1-2.

Technical Information 1-11

Table Section 1-2 System Memory Map

Memory Space Size Function

000000-07FFFF 512 KB Conventional base memory
080000-09FBFF 127 KB Extended conventional base memory
09FC00-09FFFF 1 KB Extended BIOS Data (movable by EMM386, QEMM and 386

max)
0A0000-0BFFFF 128 KB On-board video memory
0C0000-0C7FFF 32 KB On-board video BIOS
0C8000-0DFFFF 128 KB Open to EISA and PCI bus*
**E0000-FFFFF 128 KB System BIOS
100000- On-Board 255 MB Extended system memory

* On-board Adaptec PCI SCSI-2 bus may use 10 to 32 KB of this area

** Detail map of E0000-FFFFF:

E0000 - E324F available, not used

*** E3250 - E477F Setup

E4780 - E536F BIOS string table
E5370 - EC5B6 Plug and Play code
EC5B7 - FFFFF remainder of BIOS

** Subject to change without notice
*** May be reclaimed for DOS UMB’s (include E000 - E4FF)

Flash ROM supports the reprogramming of the system and built-in video BIOS. The Flash
part can be accessed in 128K granularity for ROM reads and 64K granularity for flashing.
NEC Port 0C12h bits 6 and 7 map each of the four 64K byte chunks of the ROM to the
FXXXX range. ACU access is controlled by the system BIOS code and is generally not
accessible in ISA space. Table Section 1-3 shows how to access the different areas of the
Flash ROM by using bits 6 and 7 (RPG0 – 1) from NEC proprietary port 0C12h (see “NEC
Proprietary Ports” later in this section).

Table Section 1-3 Flash ROM Selection Bits

RPG0 RPG1 Selection

0 0 Highest 64 KB accessible at FXXXX
0 1 Third 64 KB accessible at FXXXX
1 0 Second 64 KB accessible at FXXXX
1 1 Lowest 64 KB accessible at FXXXX

1-12 Technical Information

Flash ROM programming is supported only in the 0F0000h – 0FFFFh area. The system
and Video BIOS area of the Flash ROM (upper 64 KB) can be erased, programmed, and
verified normally with the RPG0 bit set low (to 0). To erase, program, and verify the SCSI
BIOS and ACU area (lower 64 bits) the RPG0 bit must be set high (to 1). This allows
access to the lower 64 KB of the Flash ROM via the 0F000h to 0FFFFFh area.

To upgrade the BIOS, see Section 4, Maintenance and Troubleshooting, for BIOS upgrade
information.

On-Board Peripherals

The following subsections describe the computer’s on-board peripheral control circuitry.
The peripherals interface with the computer through either the PCI or EISA buses.

SCSI Circuitry

The SCSI circuitry is controlled by the Adaptec AIC-7850 PCI bus to SCSI bus controller.
SCSI bus connectivity allows connection to SCSI-compatible peripherals, such as high­capacity floppy drives, tape drives, and CD-ROMs. The AIC-7850 can support data
transfer rates of up to 10 MBs per second. For further information, refer to the Adaptec
AIC-7850 data manual.

IDE Controller

The CMD PCIO640B IDE controller supports up to four IDE hard disks. The PCIO640B
supports both primary and secondary IDE devices. Automatic sensing of EISA hard disk
controllers is provided. If the BIOS senses an EISA hard disk controller, the on-board IDE
interface is disabled. For further information, refer to the CMD PCIO640B data manual.

Video Circuitry

The Tseng W32P PCI graphics accelerator features a graphical user interface (GUI)
accelerator and advanced features for the developing imaging and multimedia markets. For
further information, refer to the Tseng W32P data manual.

EISA SRAM

A 6264LP 8Kx8 static RAM is used to configure the EISA bus. This SRAM receives its
power from the bq4287 real-time clock (RTC), which uses a lithium battery. The 6264LP
is located on the EISA bus.

Technical Information 1-13

Real-Time Clock (RTC)

The computer uses a Benchmarq bq4287 RTC module with non-volatile RAM control. The
bq4287 resides on the XD bus and provides a time-of-day clock and a 100-year calendar
with alarm features and battery operation. The battery life is approximately 6 years when
driving an SRAM that draws 2 microamperes when off and the computer is off 2/3 of the
day. For further information, refer to the Benchmarq bq4287 data sheet.

System I/O Controller

The computer uses the SMC FDC37C665 I/O system I/O controller to provide a floppy
disk controller, a digital data separator, two 16550 compatible UARTS, and an enhanced
bidirectional parallel port. The computer supports extended capabilities port (ECP),
enhanced parallel port (EPP), and ZIPPY protocols.

The I/O controller provides control for up to two diskette/tape drives. The following
devices are supported:

n 5 1/4-inch 360 KB diskette drive
n 5 1/4-inch 1.2 MB diskette drive
n 3 1/2-inch, 720 KB diskette drive
n 3 1/2-inch, 1.44 MB diskette drive
n 3 1/2-inch 2.88 MB diskette drive

The capacity of 3 1/2 inch diskette drives is sensed automatically. The existence of an
EISA floppy controller is also automatically sensed. If the BIOS detects an EISA floppy
controller, the on-board floppy controller is disabled. The on-board floppy controller can
also be disabled via Setup (for diskless workstations). However, if there is no bootable
device available, the system BIOS will attempt to boot from the built-in floppy even if the
on-board floppy controller is disabled via Setup. This provides a bootable system in the
event that the CMOS is corrupted.

I/O Mapping

The processor communicates with I/O devices by I/O mapping. There are a large number of
I/O ports implemented in the system associated with the keyboard controller, system I/O
controller, and Neptune II chipset. The hexadecimal (hex) addresses of I/O devices used by
the Image P90E and Image P100E are listed in Table Section 1-4. For a description of the
chipset configuration registers, see the following subsection.

The I/O ports implemented by the system I/O controller are not listed. Refer to the SMC
FDC37C665 data sheets for a detailed description of the system I/O controller ports. In
addition, keyboard controller registers (with the exception of the keyboard status register)
are documented in the NEC PS/2 Style Keyboard Controller release notes.

1-14 Technical Information

Table Section 1-4 I/O Addresss Map

Address (Hex) I/O Device Name Location Access

0000-000F DMA controller 1 (channel 0-3) ESC R/W
0010-0018 EMS registers R/W
0020-0021 Interrupt controller 1 ESC R/W
0022-0023 ESC configuration index registers ESC R/W
0040-0043 System Timer 1 ESC R/W

0048-004B System Timer 2 ESC R/W
0060-006E (even) Keyboard control Keyboard controller R/W
0060-006E (odd) Port B Keyboard controller R/W
0061, 0070 NMI mask, Real-time clock (RTC) ESC R/W, W

0071-007F RTC RTC (bq4287) R/W
0080-008F DMA page register ESC RW/W
00A0-00A1 Interrupt controller 2 ESC (00A0-00A1) R/W

00C0-00DE DMA controller 2 ESC R/W

00F0 Reset IRQ13 ESC W

01F0-01F7 Hard disk control System I/O controller R/W

0278-027A Parallel port 3 System I/O controller R/W

02F8-02FF Serial port 2 System I/O controller R/W

0320-032F Hard disk control System I/O controller R/W

0372 Secondary floppy disk digital output

register

0378-037A Parallel port 2 System I/O controller R/W
03BC-03BE Parallel port 1 System I/O controller R/W

ESC W