Intel 440BX User manual

Intel®440BX Scalable
Performance Board
Development Kit Manual
July 2001
Order Number: 273318-007

2Intel® 440Bx Scalable Performance Board Development Kit Manual
Information in this document is provided in connection with Intel®products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked “reserved”or “undefined.”Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The Intel®Pentium®III processor and the Intel®Celeron™processor may contain design defects or errors known as errata which may cause the
product to deviate from published specifications. Current characterized errata are available on request.
MPEG is an international standard for video compression/decompression promoted by ISO. Implementations of MPEG CODECs, or MPEG enabled
platforms may require licenses from various entities, including Intel Corporation.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-
548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright © Intel Corporation, 2001. Portions of this manual Copyright © 1999 General Software, Inc. All rights reserved.
*Other names and brands may be claimed as the property of others.

Intel®440Bx Scalable Performance Board Development Kit Manual 3
Contents
Contents
1 About this Manual...................................................................................................................7
1.1 Content Overview .................................................................................................................7
1.2 Text Conventions..................................................................................................................8
1.3 Technical Support.................................................................................................................9
1.3.1 Electronic Support Systems.....................................................................................9
1.3.2 Telephone Technical Support..................................................................................9
1.4 Product Literature .................................................................................................................9
1.5 Related Documents ............................................................................................................10
2GettingStarted.......................................................................................................................11
2.1 Overview.............................................................................................................................11
2.1.1 Processor Assembly Features...............................................................................11
2.1.2 Baseboard Features ..............................................................................................12
2.2 Included Hardware..............................................................................................................13
2.3 Software Key Features .......................................................................................................13
2.3.1 General Software, Inc............................................................................................13
2.3.2 QNX Software Systems, Ltd..................................................................................14
2.4 Before You Begin................................................................................................................15
2.5 Setting up the Evaluation Board .........................................................................................16
2.6 Configuring the BIOS..........................................................................................................18
3 Theory of Operation.............................................................................................................19
3.1 Block Diagram ....................................................................................................................19
3.2 System Operation...............................................................................................................20
3.2.1 Supported Processors ...........................................................................................20
3.2.1.1 Intel®Pentium®III Processor.................................................................20
3.2.1.2 Intel®Celeron™Processor....................................................................21
3.2.2 82443BX Host Bridge/Controller............................................................................21
3.2.2.1 System Bus Interface.............................................................................21
3.2.2.2 Accelerated Graphics Port (AGP) Interface...........................................22
3.2.2.3 System Clocking ....................................................................................22
3.2.3 In-Target Probe......................................................................................................22
3.2.4 82371EB PCI to ISA/IDE Xcelerator (PIIX4E) .......................................................22
3.2.5 DRAM ....................................................................................................................22
3.2.6 Power.....................................................................................................................23
3.2.7 Power Management...............................................................................................23
3.2.8 Boot ROM..............................................................................................................23
3.2.9 RTC/NVRAM .........................................................................................................23
3.2.10 Legacy I/O .............................................................................................................23
3.2.11 IDE Support ...........................................................................................................23
3.2.12 Floppy Disk Support ..............................................................................................23
3.2.13 Keyboard/Mouse....................................................................................................23
3.2.14 USB .......................................................................................................................24
3.2.15 RS232 Ports ..........................................................................................................24
3.2.16 IEEE 1284 Parallel Port.........................................................................................24
3.2.17 PCI Connectors .....................................................................................................24
3.2.18 ISA Connectors......................................................................................................24

4Intel®440Bx Scalable Performance Board Development Kit Manual
Contents
3.2.19 AGP Connector......................................................................................................24
3.2.20 Post Code Debugger.............................................................................................24
3.2.21 Clock Generation...................................................................................................24
3.2.22 Interrupt Map .........................................................................................................25
3.2.23 Memory Map..........................................................................................................25
4 Hardware Reference.............................................................................................................27
4.1 Processor Assembly...........................................................................................................27
4.1.1 Thermal Management............................................................................................27
4.1.2 In-Target Probe Debugger Port.............................................................................27
4.2 Post Code Debugger..........................................................................................................28
4.3 ISA and PCI Expansion Slots.............................................................................................28
4.4 PCI Device Mapping...........................................................................................................28
4.5 Connector Pinouts..............................................................................................................29
4.5.1 ATX Power Connector...........................................................................................29
4.5.2 ITP Debugger Connector.......................................................................................30
4.5.3 Stacked USB .........................................................................................................30
4.5.4 Mouse and Keyboard Connectors.........................................................................31
4.5.5 Parallel Port...........................................................................................................31
4.5.6 Serial Ports............................................................................................................32
4.5.7 IDE Connector.......................................................................................................32
4.5.8 Floppy Drive Connector.........................................................................................33
4.5.9 PCI Slot Connector................................................................................................34
4.5.10 ISA Slot Connector................................................................................................35
4.6 AGP Connector...................................................................................................................36
4.7 Jumpers..............................................................................................................................37
4.7.1 Enable Spread Spectrum Clocking (J14)...............................................................37
4.7.2 Clock Frequency Selection (J15)...........................................................................37
4.7.3 On/Off (J20)...........................................................................................................37
4.7.4 Flash BIOS VPP Select (J21)................................................................................38
4.7.5 Flash BIOS Boot Block Control (J22) ....................................................................38
4.7.6 SMI# Source Control (J23)....................................................................................38
4.7.7 CMOS RAM Clear (J24)........................................................................................38
4.7.8 Push Button Switches............................................................................................38
4.8 In-Circuit BIOS Update.......................................................................................................39
5 BIOS Quick Reference.........................................................................................................41
5.1 BIOS and Pre-Boot Features..............................................................................................41
5.2 Power-On Self-Test (POST)...............................................................................................41
5.3 Setup Screen System.........................................................................................................43
5.3.1 Basic CMOS Configuration Screen .......................................................................43
5.3.2 Configuring Drive Assignments .............................................................................44
5.3.2.1 Configuring Floppy Drive Types.............................................................44
5.3.3 Configuring IDE Drive Types.................................................................................45
5.4 Configuring Boot Actions....................................................................................................46
5.5 Custom Configuration Setup Screen..................................................................................46
5.6 Shadow Configuration Setup Screen..................................................................................47
5.7 Standard Diagnostics Routines Setup Screen....................................................................48
5.8 Start System BIOS Debugger Setup Screen......................................................................48
5.9 Start RS232 Manufacturing Link Setup Screen..................................................................49

Intel®440Bx Scalable Performance Board Development Kit Manual 5
Contents
5.10 Manufacturing Mode...........................................................................................................49
5.10.1 Console Redirection ..............................................................................................49
5.10.2 CE-Ready Windows CE Loader.............................................................................50
5.10.3 Integrated BIOS Debugger ....................................................................................50
5.11 Embedded BIOS POST Codes...........................................................................................52
5.12 Embedded BIOS Beep Codes............................................................................................55
A PLD Code Listing...................................................................................................................57
B Bill of Materials.......................................................................................................................59
C Schematics...............................................................................................................................69
Index .....................................................................................................................................................105
Figures
1 Evaluation Board Jumpers and Connectors...............................................................................16
2 Evaluation Board Block Diagram................................................................................................19
3 BIOS POST Pre-Boot Environment............................................................................................42
4 Embedded BIOS Setup Screen Menu........................................................................................43
5 Embedded BIOS Basic Setup Screen........................................................................................44
6 Embedded BIOS Custom Setup Screen.....................................................................................47
7 Embedded BIOS Shadow Setup Screen....................................................................................47
8 Standard Diagnostic Routines Setup Screen .............................................................................48
9 Start RS232 Manufacturing Link Setup Screen..........................................................................49
10 CE-Ready Boot Feature .............................................................................................................50
11 Integrated BIOS Debugger Running Over a Remote Terminal ..................................................51
Tables
1 Related Documents....................................................................................................................10
2 Interrupts.....................................................................................................................................25
3 Memory Map...............................................................................................................................25
4 PCI Device Mapping...................................................................................................................28
5 Primary Power Connector (J11) .................................................................................................29
6 ITP 1.5 V Receptacle Connector Pin Assignment
(J2 on the Processor Assembly).................................................................................................30
7 USB Connector Pinout (J2) ........................................................................................................30
8 Keyboard and Mouse Connector Pinouts (J1 on the Baseboard) ..............................................31
9 DB25 Parallel Port Connector Pinout (J3)..................................................................................31
10 Serial Port Connector Pinout (J4)...............................................................................................32
11 PCI IDE1 (JP3) and IDE2 (JP4) Connector................................................................................32
12 Diskette Drive Header Connector (JP1) .....................................................................................33
13 PCI Slots (J7, J8, J9)..................................................................................................................34
14 ISA Slots (J5, J6)........................................................................................................................35
15 AGP Slot (J13)............................................................................................................................36
16 Default Jumper Settings .............................................................................................................37
17 IDE0-IDE3 Drive Assignments....................................................................................................45
18 Baseboard Bill of Materials.........................................................................................................59
19 PGA370 Socket Processor Assembly Bill of Materials...............................................................64
20 Key Components Bill of Materials...............................................................................................67

6Intel®440Bx Scalable Performance Board Development Kit Manual
Contents
Revision History
Revision Date Description
007 7/01 Added power management section and replaced BIOS information.
006 4/01 Kits upgraded to ship with 850 MHz Celeron processor (replacing 566 MHz
processor).
005 3/20/01 Expanded the Key Components BOM to include allkit contents other than packaging,
documentation, cables, mounting hardware, etc. Changed baseboard part FB1-FB4,
FB9 to BLM41P750S, 75 Ω/100 MHz/3 A (schematic and BOM change). Removed
processor core voltages; see processor datasheets. BOM was reformatted.
004 01/01 Updated processor support.
003 8/00 Added support for the 850 MHz Pentium®III processor.
002 5/00 Added support for the 700 MHz Pentium®III processor and the 566 MHz Celeron™
processor. Changed document name. Removed references to specific video adapter
card.
001 1/00 First publication of this document.

Intel®440Bx Scalable Performance Board Development Kit Manual 7
About this Manual 1
This manual tells you how to set up and use the evaluation board and processor assembly included
in your Intel®440BX Scalable Performance Board Development Kit.
1.1 Content Overview
Chapter 1, “About This Manual”- This chapter contains a description of conventions used in this
manual. The last few sections tell you how to obtain literature and contact customer support.
Chapter 2, “Getting Started”- Provides complete instructions on how to configure the evaluation
board and processor assembly by setting jumpers, connecting peripherals, providing power, and
configuring the BIOS.
Chapter 3, “Theory of Operation”- This chapter provides information on the system design.
Chapter 4, “Hardware Reference”- This chapter provides a description of jumper settings and
functions, and pinout information for each connector.
Chapter 5, “BIOS Quick Reference”- This chapter describes how to configure the BIOS for your
system configuration. A summary of all BIOS menu options is provided.
Appendix A, “PLD Code Listing”- This appendix includes a sample code listing for the Post Code
Debugger.
Appendix B, “Bill of Materials”- This appendix contains the bill of materials for the evaluation
board.
Appendix C, “Schematics”- This appendix contains schematics for selected connectors and
subsystems for the evaluation board.

8Intel®440Bx Scalable Performance Board Development Kit Manual
About this Manual
1.2 Text Conventions
The following notations may be used throughout this manual.
#The pound symbol (#) appended to a signal name indicates that the
signal is active low.
Variables Variables are shown in italics. Variables must be replaced with correct
values.
Instructions Instruction mnemonics are shown in uppercase. When you are
programming, instructions are not case-sensitive. You may use either
uppercase or lowercase.
Numbers Hexadecimal numbers are represented by a string of hexadecimal digits
followed by the character H. A zero prefix is added to numbers that
begin with A through F. (For example, FF is shown as 0FFH.) Decimal
and binary numbers are represented by their customary notations. (That
is, 255 is a decimal number and 1111 1111 is a binary number. In some
cases, the letter Bis added for clarity.)
Units of Measure The following abbreviations are used to represent units of measure:
Aamps,amperes
Gbyte gigabytes
Kbyte kilobytes
KΩkilo-ohms
mA milliamps, milliamperes
Mbyte megabytes
MHz megahertz
ms milliseconds
mW milliwatts
ns nanoseconds
pF picofarads
Wwatts
Vvolts
µA microamps, microamperes
µF microfarads
µs microseconds
µW microwatts
Signal Names Signal names are shown in uppercase. When several signals share a
common name, an individual signal is represented by the signal name
followed by a number, while the group is represented by the signal name
followed by a variable (n). For example, the lower chip-select signals
are named CS0#, CS1#, CS2#, and so on; they are collectively called
CSn#. A pound symbol (#) appended to a signal name identifies an
active-low signal. Port pins are represented by the port abbreviation, a
period, and the pin number (e.g., P1.0).

Intel®440Bx Scalable Performance Board Development Kit Manual 9
About this Manual
1.3 Technical Support
1.3.1 Electronic Support Systems
Intel’s site on the World Wide Web (http://www.intel.com/) provides up-to-date technical
information and product support. This information is available 24 hours per day, 7 days per week,
providing technical information whenever you need it.
Product documentation is provided online in a variety of web-friendly formats at:
http://developer.intel.com/design/litcentr/index.htm
1.3.2 Telephone Technical Support
In the U.S. and Canada, technical support representatives are available to answer your questions
between 5 a.m. and 5 p.m. PST. You can also fax your questions to us. (Please include your voice
telephone number and indicate whether you prefer a response by phoneor by fax). Outside the U.S.
and Canada, please contact your local distributor.
1.4 Product Literature
You can order product literature from the following Intel literature centers.
1-800-628-8686 U.S. and Canada
916-356-7599 U.S. and Canada
916-356-6100 (fax) U.S. and Canada
1-800-548-4725 U.S. and Canada
708-296-9333 U.S. (from overseas)
44(0)1793-431155 Europe (U.K.)
44(0)1793-421333 Germany
44(0)1793-421777 France
81(0)120-47-88-32 Japan (fax only)

10 Intel®440Bx Scalable Performance Board Development Kit Manual
About this Manual
1.5 Related Documents
Table 1. Related Documents
Document Title Order Number
Intel®Pentium®III Processor for the PGA370 Socket at 500 MHz to 1 GHz datasheet 245264
Intel®Pentium®III Processor Specification Update 244453
P6 Family of Processors Hardware Developer’s Manual 244001
Intel®Celeron™Processor up to 850 MHz datasheet 243658
Intel®Celeron™Processor Specification Update 243748
Intel®440BX AGPset / PGA370 Scalable Performance Board Design Guide 273296
Intel Architecture Software Developer’s Manual, Volume 1: Basic Architecture 243190
Intel Architecture Software Developer’s Manual, Volume 2: Instruction Set Reference 243191
Intel Architecture Software Developer’s Manual, Volume 3: System Programming Guide 243192
Intel®440BX AGPset: 82443BX Host Bridge/Controller datasheet 290633
Intel®440BX AGPset: 82443BX Host Bridge/Controller Specification Update 290639
Intel®440BX AGPset: 82443BX Host Bridge/Controller Timing Specification 273218
82371AB (PIIX4) and 82371EB (PIIX4E) PCI-TO-ISA/IDE Xcelerator datasheet 290562
Intel 82371EB (PIIX4E) Specification Update 290635
Intel 82371AB PCI ISA IDE Xcelerator (PIIX4) Timing Specification 273135
CK97 Clock Synthesizer/Driver Design Guidelines 243867

Intel®440Bx Scalable Performance Board Development Kit Manual 11
Getting Started 2
This chapter identifies the Intel®440BX Scalable Performance Board Development Kit’s key
components, features and specifications, and tells you how to set up the board for operation.
2.1 Overview
The evaluation board provided in your kit is a scalable board design. It supports 440BX AGPset-
based designs with several different Intel processors and core voltages1:
•Intel®Pentium®III Processor at 600 MHz, 700 MHz and 850 MHz (FC-PGA package, 100
MHz processor system bus)
•Intel®Celeron™Processor at 300A MHz, 366 MHz and 433 MHz (PPGA package, 66 MHz
processor system bus)
•Intel®Celeron™Processor at 566 MHz and 733 MHz (FC-PGA package, 66 MHz processor
system bus)
•Intel®Celeron™Processor at 850 MHz (FC-PGA package, 100 MHz processor system bus)
•All future PGA370-socketed Intel®Pentium®III and Celeron™processors (.18µ and .25µ
technologies)
This scalable board design provides an example of a single-platform solution that supports multiple
processors. Following this example, OEMs can design products that are scalable over a broad
range of Intel Pentium III and Celeron processors.
The evaluation board consists of a baseboard and a processor assembly.
•The processor assembly contains an 850 MHz Intel®Pentium®III Processor, an 82443BX
Host Bridge/Controller and the supporting circuitry.
•The baseboard contains the 82371EB PCI ISA IDE Xcelerator (PIIX4E) and other system
board components and peripheral connectors.
Warning: The processor assembly is attached to the baseboard at the factory. Do not remove the processor
assembly from the baseboard. Intel will not support the processor assembly or the baseboard if any
portion of the assembly is removed by the customer.
2.1.1 Processor Assembly Features
The processor assembly features are summarized below.
•Pentium III Processor in a FC-PGA package (PGA370) with 100-MHz system bus frequency
•Intel 440BX AGPset: 82443BX Host Bridge/Controller
1. Core voltages are specified in the Intel®Pentium®III and Celeron™processor datasheets.
See “Related Documents”on page 10. No jumpers are required to switch between voltages; the
core voltage is automatically sensed by the regulation circuitry.

12 Intel®440Bx Scalable Performance Board Development Kit Manual
Getting Started
—100/66 MHz memory interface:
—64-bit memory data interface plus 8 ECC bits and hardware scrubbing
—60 ns EDO DRAM and 100/66 MHz SDRAM support
—16 Mbit and 64 Mbit DRAM technologies
•Five PCI masters
—PCI Specification Rev 2.1 Compliant
•Accelerated Graphics Port (AGP) Support:
—AGP Interface Specification Revision 1.0 compliant
—66/133 MHz, 3.3-V, AGP device support
•Integrated System Power Management support
2.1.2 Baseboard Features
•Flash system BIOS ROM
—General Software system BIOS
—In-circuit BIOS upgradability
•32-Mbyte SDRAM DIMM included
—4 Mbyte x64, 3.3 V, 100 MHz with a CAS latency of 2
•User-accessible on-board connectors include:
—Two SDRAM DIMM connectors
—Two serial RS-232 ports; COM1, COM2
—One EPP/ECP parallel port
—PS/2 keyboard and PS/2 mouse (6-pin mini-DIN connectors)
—Two USB ports
—Two IDE bus connectors
—One floppy connector
—Three PCI expansion slots and two ISA expansion slots. There are no shared slots; all
slots are usable.
—One AGP connector
—Standard ATX power supply connector
•Miscellaneous features include:
—On-board post-code debugger (Port 80)
—Reset push button
—Stand-off feet for table-top operation

Intel®440Bx Scalable Performance Board Development Kit Manual 13
Getting Started
2.2 Included Hardware
•Evaluation board (baseboard and processor assembly combination)
•4.3-Gbyte hard disk drive pre-loaded with the QNX Real Time Operating System*
•32-Mbyte, 100-MHz SDRAM DIMM
•Attached heatsink and fan
•PCI video graphics adapter
•Intel®PRO/100+ Adapter - 82559-based Ethernet network adapter
•Mounting hardware
•IDE cable for the hard disk drive
2.3 Software Key Features
The software in the kit is included to facilitate development of real-time applications based on the
components used in the evaluation board. The software tools included in your kit are described in
this section.
Refer to the letter included in your kit for up to date information about other vendors offering
development software for this kit.
Note: Software in the kit is provided free by the vendor and is only licensed for evaluation purposes.
Customers using the tools that work with Microsoft products must have licensed those products.
Any targets created by those tools should also have appropriate licenses. Software included in the
kit is subject to change.
2.3.1 General Software, Inc.
General Software’s Embedded BIOS* is a full-featured BIOS for x86-based handheld, applied
computing, and volume consumer electronics applications. This product offers a winning
combination of superior OEM configurability and superior embedded features.
Intel selected Embedded BIOS as the standard pre-installed pre-boot firmware for this design. The
following features of Embedded BIOS have been enabled in this Intel development kit:
•SDRAM detection, configuration and initialization
•L2 cache configuration and initialization
•Intel 440BX Northbridge configuration and initialization
•PIIX4E Southbridge configuration and initialization
•POST codes displayed to POST code monitor
•Two serial ports, one EPP/ECP parallel port
•PCI bus and device enumeration and configuration
•AGP configuration and initialization
•SMC FDC37B787 Super I/O programming
•Integrated debugger

14 Intel®440Bx Scalable Performance Board Development Kit Manual
Getting Started
•Burn-in diagnostics
•Console redirection
•Manufacturing mode
2.3.2 QNX Software Systems, Ltd.
The QNX Real Time Operating System for Intel Architecture comes pre-loaded on the hard disk
included in your kit.
•Small memory footprint of the QNX operating system with microGUI
•QNX microGUI is a full featured graphical user interface (GUI) and windowing system
•Photon Application Builder
•QNX Development kit provides the basic utilities to build and program Intel Flash
•Watcom C/C++ Development Suite*: is a full featured development suite
•Includes compiler, assembler and debugger with full support for the QNX microGUI function
library
•Makes development of the QNX executables fast, easy and optimized
To use the QNX software, use the following password and username:
Username: Inteldemo
Password: QNX
Caution: Use the shutdown button to exit from QNX. Improper shutdown may result in the loss of the file
system.

Intel®440Bx Scalable Performance Board Development Kit Manual 15
Getting Started
2.4 Before You Begin
Before you set up and configure your evaluation board, you may want to gather some additional
hardware and software.
VGA Monitor You can use any standard VGA or multi-resolution monitor. The setup
instructions in this chapter assume that you are using a standard VGA
monitor.
Power Supply You must use an ATX-type PC power supply.
Keyboard You need a keyboard with a PS/2-style connector or adapter.
Mouse Optional. You can use a mouse with a PS/2-style connector or adapter.
Additional Drives You can connect up to four IDE drives and two floppy drives to the
evaluation board. Two devices (master and slave) can be attached to each
IDE connector. You must provide the cables for these drives.
You may have all these storage devices attached to the evaluation board at
the same time.
Video Adapter You can use the video adapter supplied with your kit, or you can use any
other adapter. The evaluation board supports AGP, PCI and ISA video
cards. You will have to install the correct drivers for video adapters other
than the one provided.
Network Adapter An Intel Pro 100+ Adapter network adapter is supplied with your kit.
Drivers for this adapter are also provided.
The evaluation board supports all standard PCI and ISA compatible
network cards. You will have to install the correct drivers to use adapters
not included in your kit.
Other Devices
and Adapters The evaluation board behaves much like a standard desktop computer motherboard. Most PC compatible peripherals can be attached and
configured to work with the evaluation board. For example, you may
want to install a sound card or AGP graphics card.

16 Intel®440Bx Scalable Performance Board Development Kit Manual
Getting Started
2.5 Setting up the Evaluation Board
Once you have gathered the hardware described in the last section, follow the steps below to set up
your evaluation board. This manual assumes you are familiar with the basic concepts involved with
installing and configuring hardware for a personal computer system. Refer to Figure 1 for the
location of connectors, jumpers, etc.
1. Make sure you are in a static-free environment before removing any components from their
anti-static packaging. The evaluation board is susceptible to electro-static discharge damage;
such damage may cause product failure or unpredictable operation.
2. Inspect the contents of your kit. Check for damage that may have occurred during shipment.
Contact your sales representative if any items are missing or damaged.
Caution: Connecting the wrong cable or reversing the cable can damage the evaluation board and may
damage the device being connected. Since the evaluation board is not in a protective chassis, use
caution when connecting cables to this product.
Figure 1. Evaluation Board Jumpers and Connectors
J12
J12
U12 U13 U11
JP1
J21 J22
J23
J14 J15
J12
JP2 JP3
IDE2 IDE1
J20
J24
D1
D2
J2
J1 J4 J3
J5 J6
J13
J18J17
J11
J7 J8 J9
J2
J2
ISA
PCI AGP Connector USB Keyboard (Top) COM1 (Top)/
Parallel Port
ATX Power
IDE Connectors
Floppy
J14
J15
J20
J21
J22
J23J24 SDRAM
Connectors
Connectors
Connector
/Mouse COM2
Connector
DIMM Slots
ITP
Special Mounting Holes
LEDs
Battery
Post
Code
Debugger
Debugger
Port
Processor
Assembly
PGA370
Socket
Fan Power
Connector

Intel®440Bx Scalable Performance Board Development Kit Manual 17
Getting Started
3. Make sure the evaluation board’s jumpers are set to the following default locations.
•J14 - Not installed
•J15 - Not Installed
•J20 - Jumper pins 2-3
•J21 - Jumper pins 2-3
•J22 - Jumper pins 2-3
•J23 - Jumper pins 2-3
•J24 - Jumper pins 1-2
4. Mount the hardware:
•Table-top operation: The evaluation board is shipped with standoff “feet”for use in a
table-top environment. These feet are installed on the evaluation board to raise it off the
table surface.Your kit contains two bags of mounting hardware. One bag contains eight
standoff feet, eight mounting screws, and eight washers. Another bag has three shorter
feet that must be attached slightly differently.
—To mount the eight standard feet, insert a washer onto a screw, then push the screw
through the top of the board. From below the board, thread one of the longer feet
onto the screw.
—To mount the three special feet, screw the three shorter feet onto the existing
screws. See Figure 1 for the location of the three special holes.
Warning: Do not remove the nuts from these three holes! This will detach the processor assembly from the
baseboard, and Intel will no longer support the evaluation board.
Note: The evaluation board is not an ATX form factor.
5. Connect desired storage devices to the evaluation board:
The evaluation board supports Primary and Secondary IDE interfaces that can each host one or
two devices (master/slave). When you are using multiple devices, such as a hard disk and a
CD-ROM drive, make sure the hard disk drive has a jumper in the master position and the CD-
ROM has a jumper in the slave position. When you are using a single IDE device with the
evaluation board, make sure that the jumper is set correctly for single master operation. For
jumper settings for other configurations, consult the drive’s documentation.
Note: The evaluation board BIOS only supports hard drives of 16 Gbytes or less.
•Installing the IDE hard disk drive included in your kit:
—Connect the hard drive’s IDE connector to the JP4 connector on the evaluation
board. Be sure to align Pin 1 of the cable connector with pin 1 of JP4.
—Connect the other end to the hard disk drive.
Caution: Make sure the tracer on the ribbon cable is aligned with pin 1 on both the hard disk and the IDE
connector header. Connecting the cable backwards can damage the evaluation board or the hard
disk.
—Connect the power supply to the hard drive.
Note: The hard disk is already formatted and is pre-loaded with the QNX Real-Time Operating System
for Intel Architecture.

18 Intel®440Bx Scalable Performance Board Development Kit Manual
Getting Started
—You may have to make changes to the system BIOS to enable this hard disk. See
Chapter 5, “BIOS Quick Reference”for more information.
•Floppy drive: A floppy disk drive connected to the evaluation board is the most direct
method for loading software.
—Insert the floppy drive cable into JP1 (be sure to orient Pin 1 correctly).
—Connect the other end of the ribbon cable to the floppy drive.
—Connect a power cable to the floppy drive.
—You must make changes to the system BIOS to enable this floppy disk. See
Chapter 5, “BIOS Quick Reference”for more information.
6. Make sure the SDRAM DIMM is installed in the socket labeled J18.
7. Connect a PS/2 mouse and keyboard (see Figure 1 for connector locations).
Note: J1 (on the baseboard) is a stacked PS/2 connector. The bottom connector is for the mouse and the
top is for the keyboard.
8. Install the supplied PCI video adapter into one of the available PCI slots. Connect the monitor
cable to the VGA port on the card.
9. Connect the power supply:
•You’ll need a standard ATX PC power supply. Make sure the power supply is unplugged
(or turned off), then connect the power supply cable to the power header (J11).
Note: Some ATX power supplies do not have an on/off switch. In this case remove jumper J20 before
plugging in the ATX power connector. J20 controls an internal power supply on/off switch. When
you are ready to apply power, insert the jumper on pins 2-3. You may want to wire this header up to
a toggle switch for convenience.
10. Make sure the thermal solution is attached to the processor. Make sure the fan is plugged into
the fan power connector (J2) on the processor assembly (see Figure 1 for connector location).
Turn on the power to the monitor and evaluation board. When the power is on you should see two
power-indicator LEDs light up (located next to the ATX power connector in the upper right corner
of the board; see Figure 1). Check to see that the fan on the processor is operating.
2.6 Configuring the BIOS
General Software’s BIOS software is pre-loaded on the evaluation board. You will have to make
changes to the BIOS to enable hard disks, floppy disks and other supported features You can use
the Setup program to modify BIOS settings and control the special features of the system. Setup
options are configured through a menu-driven user interface. Chapter 5, “BIOS Quick Reference”
contains a description of BIOS options.
BIOS updates may periodically be posted to Intel’s Developers’web site at
http://developer.intel.com/.

Intel®440Bx Scalable Performance Board Development Kit Manual 19
Theory of Operation 3
3.1 Block Diagram
Figure 2. Evaluation Board Block Diagram
Processor Sensor
82371EB
DRAM Bus
ITP
Voltage
Regulator
72-Bit DIMM 72-Bit DIMM
USB
SMC FDC37B787
SuperI/O*
PS/2 Mouse
Floppy Drive
ISA Bus
Intel®Boot
Flash
Thermal
PCI Connectors
ISA Connectors
Bus Master IDE
PS/2 Keyboard
I/O APIC
IEEE 1284 Parallel Port
COM1
COM2
Processor Assembly
Clock Generator
PCI Bus
AGP Connector
82443BX
Host Bridge/Controller
Processor
AGP Bus
XD Bus
VCCcore
SMBus
Side Bus
(PGA370 Socket)
PIIX4E

20 Intel®440Bx Scalable Performance Board Development Kit Manual
Theory of Operation
3.2 System Operation
The evaluation board is a full-featured system board and processor assembly. The processor
assembly includes an 850 MHz Pentium®III processor with 256 Kbytes of integrated L2 cache and
the Intel 82443BX Host Bridge/Controller. The evaluation board contains the Intel 82371EB PCI-
to-ISA/IDE Xcelerator (PIIX4E) and other system and I/O peripherals.
The evaluation board and processor assembly support other PGA370 socket processors. The
customer may remove the Pentium III processor from the processor socket and replace it with
another supported processor. The evaluation board automatically detects which processor is
installed in the socket.
Warning: The processor assembly is attached to the baseboard at the factory. Do not remove the processor
assembly from the baseboard. Intel will not support the processor assembly or the baseboard if any
portion of the assembly is removed by the customer.
3.2.1 Supported Processors
An 850 MHz Pentium III processor is supplied in your kit. You may replace the supplied processor
with one of the following:
•600 and 700 MHz Pentium®III processor. These processors have a 256-Kbyte integrated L2
cache, and support a 100-MHz processor system bus.
•300A, 366 and 433, 566, 733 and 850 MHz Celeron™processor. These processors have a
128-Kbyte integrated L2 cache, and support a 66 MHz processor system bus (except for the
850 MHz Celeron processor, which has a 100 MHz processor system bus).
•Future PGA370-socketed Intel processors (.18µ and .25µ technologies) that support a 66 or
100 MHz processor system bus
3.2.1.1 Intel®Pentium®III Processor
The Pentium III processor for applied computing is offered at 600, 700 and 850 MHz with a
processor system bus speed of 100 MHz. Refer to the processor datasheet for processor core
voltage data (see “Related Documents”on page 10). The processor has an on-die second level
cache bus that allows a high-performance 64-bit wide cache subsystem to be integrated on the
same die as the processor. The processor can cache up to 4 Gbytes of memory using 128 Kbytes of
L2 cache, 16 Kbytes of L1 data cache and 16 Kbytes of L1 code cache. The on-die first and second
level cache operate at the same frequency and voltage as the processor core to improve
performance and reduce total system power consumption.