-001Initial release of the MS440GX Motherboard Product Guide.May 1998
Disclaimer
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installation, it accurately stores, displays, processes, provides, and/or receives date data from, into, and between the
twentieth and twenty-first centuries, including leap year calculations, provided that all other technology used in combination
with said product properly exchanges date data with it.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
obtained from:
Intel Corporation
P.O. Box 5937
Denver, CO 80217-9808
or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777,
Germany 44-0-1793-421-333, other Countries 708-296-9333.
†
Brands, names, or trademarks are the property of their respective owners.
PIDE ConnectorsEach connector supports two IDE devices
Q82371EB (PIIX4E)Provides USB and power management support
RPCI Bus Add-in Board ConnectorsSupport for 33 MHz PCI devices
SISA Bus Add-in Board ConnectorSupport for ISA compatible add-in cards
Intel® 82443GX (PAC)
Controller
Flash upgradable. Stores BIOS, Setup program,
POST, APM, PCI auto configuration utility and
Plug and Play code
On board audio subsystem with integrated FM
synthesizer
support for 133 MHz data transfer rates (AGP2x)
10Base-T and 100Base-TX interfaces
audio connectors
Connector for Pentium II Xeon processor
AGPset provides bus-control signals, address
paths and data paths for transfers between the
processor’s host bus, PCI bus, the A.G.P. and
main memory
DIMMS
processor
LED, HDD LED, infrared port and power switch
memory
Provides serial and parallel ports, diskette drive,
mouse, keyboard and IR interfaces
in addition to EIDE and UDMA/33 data transfer
rates
14
Motherboard Features
Microprocessor
The Intel® MS440GX motherboard supports one or two Pentium II Xeon 400 or 450 MHz
processors, 100 MHz host bus speeds, and L2 caches up to 1MB in size. The processor’s VID pins
automatically program the voltage regulator on the motherboard to the required processor voltage
for the Boot (P0) Processor only.
A plug-in VRM must be used when adding an Application (P1) Processor. If a plug-in VRM is not
used, then the L2 cache will be disabled.
Processor Packaging
Each processor is packaged in a single edge contact cartridge (S.E.C.C.). The cartridge includes
the processor core, second-level cache, thermal plate, and back cover.
The processor connects to the motherboard through the Slot 2 connector, a 330-pin edge connector.
When mounted in a Slot 2 connector, the processor is secured by a retention mechanism attached
to the motherboard.
Second Level Cache
The second-level cache is located on the substrate of the S.E.C.C.. The ECC cache includes
components totaling up to 1 MB in size. All onboard system memory is cacheable.
Processor Options
The following processor configuration options can be used:
• A single 400 MHz processor installed in the boot processor slot (P0) and a terminator card
installed in the application processor slot (P1). P0 is the Slot 2 connector closest to the middle
of the board. See Figure 1 callouts F and G.
• Dual 400 MHz processors. When using two processors, a voltage regulator module (VRM)
must be installed.
• A single 450 MHz processor installed in the boot processor slot (P0) and a terminator card
installed in the application processor slot (P1).
• Dual 450 MHz processors. When using two processors, a voltage regulator module (VRM)
must be installed. See Figure 21, callout D for the location of the VRM connector.
If you are installing two processors, then the following values must be identical for both:
• L2 cache size
• Operating voltages
• Processor speed
CAUTION
If the processor operating voltages for either VCC core or VCC L2 do not match, then the computer
willnot boot.
Use configure mode to set the processor speed if necessary.
15
MS440GX Motherboard Product Guide
Form Factor
The motherboard is designed to fit into a custom ATX form factor chassis.
The illustration below shows the board mounting hole locations. The mounting holes closest to the
Slot 2 connectors are used for mounting the processor retention mechanism to the board and
chassis.
12.70
12.30
6.20
3.35
3.300.20
2.59
11.40
6.74
2.80
11.55
11.30
0.00
0.30
0.00
0.45
5.10
9.06
9.31
OM07109
Figure 2. MS440GX Custom ATX Form Factor
Chipset
The Intel® 440GX AGPset includes a Host-PCI bridge integrated with both an optimized DRAM
controller and an Accelerated Graphics Port (A.G.P.) interface.
The I/O subsystem of the 440GX is based on the PIIX4E which is a highly integrated PCI-ISA/IDE
Accelerator Bridge. This chipset consists of the Intel 82443GX PCI/A.G.P. controller (PAC) and
®
the Intel
16
82371EB PCI/ISA IDE Xcelerator (PIIX4E) bridge chip.
Motherboard Features
82443GX PCI/A.G.P. Controller (PAC) (H)
The Intel 82443GX PCI/A.G.P. Controller (PAC) provides the following functions:
• Bus-control signals
• Address paths
• Data paths for transfers between the processor’s host bus, PCI bus, the A.G.P., and main
memory.
Table 2 lists the PAC features and the functionality each feature supports.
Table 2.PCI/A.G.P. Controller Features
FeatureFunctionality
Processor Interface ControlSupport for processor host bus frequencies of 100 MHz only
32-bit addressing
Desktop optimized GTL + compliant host bus interface
Integrated DRAM Controller+3.3V only DIMM DRAM configurations
Up to four double sided DIMMs
100 MHz PC100-compatible Synchronous DRAM
DIMM serial presence detect via SMBus interface
2-, 4-, 8-, 16-, 32-, 64-, and 128-Mbit DRAM devices
SDRAM 64-bit data interface with ECC support
Symmetrical and asymmetrical DRAM addressing
A.G.P. InterfaceComplies with the A.G.P. specification Rev. 1.0
Support for +3.3V A.G.P. 66/133 MHz devices
Synchronous coupling to the host-bus frequency
PCI Bus InterfaceComplies with the PCI specification Rev. 2.1
Asynchronous coupling to the host-bus frequency
PCI parity generation support
Data streaming support from PCI-to-DRAM
Support for six PCI bus masters in addition to the host PCI-to-ISA
I/O bridge
Support for concurrent host, A.G.P., and PCI transactions to main
memory
Data BufferingDRAM write buffer with read-around-write capability
Dedicated host-to-DRAM, PCI0-to-DRAM, and PCI1/A.G.P.-to-DRAM
read buffers
A.G.P. dedicated inbound/outbound FIFOs (AGP2X), used for
temporary data storage
Power Management FunctionsSupport for system suspend/resume and power-on suspend
Compliant with ACPI power management
SMBus Support for Desktop
Management Functions
Support for System Management
Mode (SMM)
17
MS440GX Motherboard Product Guide
Intel® 82371EB Xcelerator (PIIX4E) (Q)
The Intel® PIIX4E is a multifunction PCI device implementing the PCI-to-ISA bridge, PCI IDE
functionality, Universal Serial Bus (USB) host/hub function, and enhanced power management.
Table 3 lists the PIIX4E features and the functionality each feature supports.
Table 3.82371EB Xcelerator Features
FeatureFunctionality
Multifunction PCI-to-ISA BridgeSupport for the PCI bus at 33 MHz
Complies with the PCI specification
Full ISA bus support
USB ControllerTwo USB ports
Support for legacy keyboard and mouse
Support for UHCI Design Guide, revision 1.1, interface
The Intel® 82093AA I/O Advanced Programmable Interrupt Controller (IOAPIC) provides
interrupt management and incorporates both static and dynamic symmetric interrupt distribution
across all processors in a multiprocessor system. The 82093AA IOAPIC features 24 interrupts as
follows:
• 13 ISA interrupts
• Four PCI interrupts
• One Interrupt/SMI# rerouting
• Two motherboard interrupts
• One interrupt used for INTR input
• Three general purpose interrupts
• SCI BIOS supported steering
IDE Support
The motherboard has two independent bus-mastering IDE interfaces. These interfaces support PIO
Mode 3, PIO Mode 4, ATAPI devices (e.g., CD-ROM), and Ultra DMA synchronous-DMA mode
transfers. The BIOS supports logical block addressing (LBA) and extended cylinder head sector
(ECHS) translation modes. The BIOS automatically detects the IDE device transfer rate and
translation mode.
The motherboard supports LS-120 diskette technology through its IDE interfaces. LS-120 diskette
technology enables users to store 120 MB of data on a single, 3.5-inch removable diskette. LS-120
technology is backward compatible (both read and write) with 1.44 MB and 720 KB DOS-
†
formatted diskettes and is supported by Windows
The motherboard allows connection of an LS-120 compatible drive and a standard 3.5-inch
diskette drive. If an LS-120 drive is connected to an IDE connector and configured as the A drive,
and a standard 3.5-inch diskette drive is configured as a B drive, the standard diskette drive must
be connected to the diskette drive cable's "A" connector (the connector at the end of the cable).
The LS-120 drive can be configured as a boot device, if selected in the BIOS setup utility.
95 and Windows NT† operating systems.
19
MS440GX Motherboard Product Guide
Real-Time Clock, CMOS RAM, and Battery
The real-time clock provides a time-of-day clock and a multicentury calendar with alarm features
and century rollover.
The clock is compatible with DS1287 and MC146818 components and it supports 256 bytes of
battery-backed CMOS RAM in two banks that are reserved for BIOS use.
The time, date, and CMOS values can be specified in the Setup program. The CMOS values can
be returned to their defaults by using the Setup program.
An external coin-cell battery powers the real-time clock and CMOS memory. When the computer
is not plugged into a wall socket, then the battery has an estimated life of three years. When the
computer is plugged in, then the 3 V standby current from the power supply extends the life of the
battery.
NOTE
✏
Power is supplied to the chassis intrusion circuit by the battery when no AC power is provided.
Chassis intrusion will be detected when no AC power is available to the system. If the switch is
activated when no AC power is provided, then the drain on the battery is approximately 200 mA.
The clock is accurate to ± 13 minutes/year at 25 ºC with 5 V applied.
Diskette Drive Controller
The diskette drive controller is software compatible with the DP8473 and N82077 diskette drive
controllers and supports both PC-AT
interface can be configured for the following diskette drive capacities and sizes:
• 360 KB, 5.25-inch
• 1.2 MB, 5.25-inch
• 720 KB, 3.5-inch
• 1.2 MB, 3.5-inch (driver required)
• 1.25/1.44 MB, 3.5-inch
†
and PS/2† modes. In the Setup program, the diskette drive
20
Motherboard Features
Accelerated Graphics Port (A.G.P.) Support
The Accelerated Graphics Port (A.G.P.) is a high-performance interconnect for graphic-intensive
applications, such as 3D applications.
A.G.P. is independent of the PCI bus. It is intended for exclusive use with graphical display
devices. A.G.P. provides these performance features:
• Pipelined-memory read and write operations that hide memory access latency
• Demultiplexing of address and data on the bus for near 100 percent bus efficiency
• AC timing for 133 MHz data transfer rates, allowing data throughput of 528 MB/sec
An A.G.P. connector is provided on the motherboard to install A.G.P. add-in cards.
Memory
The motherboard has four dual inline memory module (DIMM) sockets.
Minimum memory size is 32 MB; maximum memory size is 2 GB. The BIOS automatically
detects memory type and size.
The motherboard supports the following memory features:
• PC100 compliant 168-pin DIMMs with gold-plated contacts
• 3.3 V unbuffered or registered (not mixed) 100 MHz ECC SDRAM DIMMs only
• Single or double sided DIMMs in the sizes listed in the Table 4.
Table 4.DIMM Sizes Supported
DIMM SizeConfiguration
16 MB2 Mbit x 72
32 MB4 Mbit x 72
64 MB8 Mbit x 72
128 MB16 Mbit x 72
256 MB32 Mbit x 72
512 MB128 Mbit x 72
Memory can be installed in any order in one, two, three or four sockets.
Memory size can vary between sockets.
Memory speed is 100 MHz only.
21
MS440GX Motherboard Product Guide
Input/Output (I/O) Controller (O)
The I/O controller handles the exchange of information between the processor and external devices
like the mouse and keyboard or a printer that are connected to the computer.
The National Semiconductor PC97307 I/O Controller is an ISA Plug and Play compatible
multifunction I/O device with components and features listed in the table below.
Table 5.I/O Controller Components
ComponentFeature(s)
Serial PortsTwo 16450/16550A software compatible UARTs
Internal send/receive 16-byte FIFO buffer
Four internal 8-bit DMA options for the UART with
SIR support (USI)
Multimode Bidirectional Parallel PortStandard mode: IBM and Centronics compatible
Enhanced parallel port (EPP) mode with BIOS and
driver support
High speed extended capabilities port (ECP) mode
Diskette Drive ControllerDP8473 and N82077 compatible
16-byte FIFO buffer
PS/2 diagnostic-register support
High performance digital data separator (DDS)
PC-AT, PS/2, and 3 mode diskette drive mode
support
8042A Compatible Keyboard and Mouse Controller
Support for IrDA† and Consumer Infrared Compliant
Infrared Interface
By default, the I/O controller interfaces are automatically configured during boot up. The I/O
controller can also be manually configured in the Setup program.
22
82558 PCI LAN Controller (D)
The Intel 82558 LAN Controller provides the functions listed in Table 6 below.
Table 6.LAN Controller Functions
Motherboard Features
Function
CSMA/CD Protocol Engine
PCI bus interface (Rev 2.1 compliant)
DMA engine for movement of commands, status,
and network data across the PCI bus
Integrated physical layer interfaceComplete functionality necessary for the 10Base-T
Integrated power management featuresSupport for ACPI
Digitally controlled adaptive equalizations and
transmission
EtherExpress
Includes:
and 100Base-TX interfaces
When in 10 Mbit/sec mode, the interface drives the
cable directly
A complete set of MII management registers for
control and status reporting
802.3µ Auto-Negotiation for automatically
establishing the best operating mode when
connected to other 10 Base-T or 100Base-TX
devices
Support for Wake on LAN technology
PRO/100 WfM PCI LAN Subsystem
™
The Intel EtherExpress PRO/100 Wired for Management (WfM) PCI LAN subsystem is an
Ethernet LAN interface that provides both 10Base-T and 100Base-TX connectivity. Features
include:
• 32-bit direct bus mastering on the PCI bus
• Shared memory structure in the host memory that copies data directly to/from host
memory
• 10Base-T and 100Base-TX capability using a single RJ-45 connector
• IEEE 802.3µ Auto-Negotiation for the fastest available connection
23
MS440GX Motherboard Product Guide
Alert On LAN Component
The Alert on LAN component is a companion device to the Intel 82558 LAN controller. Together,
these devices provide a management interface between a remote management console (or
management server) and a client system monitoring instrumentation.
†
When an alert input is asserted, the Alert on LAN component transmits Ethernet
82558 through an 8-bit dedicated data path. Examples of events that can trigger alert messages to
a management server include:
• Chassis intrusion
• System BIOS hang (transmits POST code error)
• LAN leash (transmits an alert that the LAN cable was disconnected)
• Temperature out of specification
• Fan failure
For more information on the Alert on LAN component and its network management capabilities,
contact your local Intel sales office.
packets to the
Audio Subsystem
The optional onboard audio subsystem features the Crystal CS4235, an audio codec with an
integrated FM synthesizer.
The audio subsystem provides all the digital audio and analog mixing functions needed for
recording and playing sound on personal computers. The audio subsystem contains the following
features:
• Stereo analog-to-digital and digital-to-analog converters
• Analog mixing, anti-aliasing, and reconstruction filters
• Line and microphone level inputs
• ADPCM, A-law, or µlaw digital audio compression/decompression
• Full digital control of all mixer and volume control functions
The audio subsystem requires up to two DMA channels and one IRQ. Table 7 shows the IRQ,
DMA channel, and base I/O address options. These options are automatically chosen by the Plug
and Play interface, so there are no default settings.
, Sound Blaster Pro† 2.0, Windows Sound System, and MPU-401 support
Sound Blaster
(DMA playback, DMA / IRQ shared
with Windows Sound System
capture)
Windows Sound System
(DMA playback)
MPU-401
(IRQ shared with Sound Blaster)
MIDI200-207h
FM Synthesis388-38Dh
CS4235 ControlFF0-FFFh
†
5 best choice
7
9 best choice
11
7
9 best choice
11
5 best choice
7
9 best choice
11
0 best choice
3
0
1 best choice
3
210-21Fh
220-22Fh best choice
230-234h
240-24Fh
250-25Fh
260-26Fh
534-537h best choice
608-60Bh
300-301h
330-331h best choice
332-333h
334-335h
Audio Drivers and Utilities
Audio software and utilities are available from Intel’s World Wide Web site. Audio driver
support is provided for the Microsoft Windows NT
4.0 and Microsoft Windows 98 operating
systems.
Hardware Monitor Subsystem
The hardware monitor subsystem provides low-cost instrumentation capabilities. The features of
the hardware monitor subsystem include:
• Management Level 4 functionality
• Analog Devices ADM 9240 or equivalent.
Integrated temperature and voltage monitoring to detect levels above or below acceptable
values (+12 V, -12 V, +5 V, +3.3 V, and +2.5 V). When suggested ratings for
temperature, fan speed or voltage are exceeded, an interrupt is activated.
Two fan speed sensors
Access through the SMBus
®
• Remote reset capabilities from a remote peer or server through LANDesk
Manager and service layers
• Headers for front and rear chassis intrusion connectors.
3.3 (or later) Client
25
MS440GX Motherboard Product Guide
Power Supply
Table 9 lists the power specifications for a computer that contains a motherboard with two
400 MHz Pentium II Xeon processors, 128 MB SDRAM, a 3.5-inch diskette drive, an WD Caviar
3320 3.3 GB Ultra ATA hard drive, a Hitachi CPR 8330 IDE CD-ROM, and a Diamond Viper
330 A.G.P. graphics card. This information is provided only as a guide for calculating
approximate power usage with additional resources added.
Values for the Windows 98 desktop mode are measured at 1280x1024x256 colors and 70 Hz
refresh rate. AC watts are measured with a typical 300 W supply, nominal input voltage and
frequency, with true RMS wattmeter at the line input.
Table 8.Power Usage
ModeWatts (AC) Out of AC Wall Outlet
Windows 98 desktop60 watts
Windows NT 4.0 desktop92 watts
Power Supply Considerations
For typical configurations, the motherboard is designed to operate with at least a 300 W power
supply. A higher-wattage power supply should be used for heavily-loaded configurations. The
power supply must comply with the following recommendations:
• The potential relation between 3.3 V DC and +5 V DC power rails
• The current capability of the +5 VSB line
• All timing parameters
• Must meet UL SELV requirements and meet the 240VA energy limit
Table 9.DC Voltage Tolerances and Estimated Current Requirements
Estimated current with a 450
MHz processor, 512 KB
cache, and 2 GB RAM
(no PCI or A.G.P.
NOTE
✏
Some heavily loaded configurations could require additional +3.3 V and +5 V power for
peripherals. Use the auxiliary power supply connector for this purpose.
26
Motherboard Features
Expansion
The MS440GX motherboard has seven expansion slots for installing add-cards such as video or
network cards that expand the capabilities of your computer.
The expansion slots available are as follows:
• Five PCI slots
• One shared slot (for a PCI or ISA card)
• One AGP 2X slot
Basic Input/Output System (BIOS)
The MS440GX motherboard uses an Intel/Phoenix BIOS which is stored in flash memory. The
BIOS can be upgraded using a disk-based program.
The contents of flash memory includes the following items:
• BIOS
• Setup Program
• Power-on Self Test (POST)
• Advanced Power Management (APM)
• PCI Auto-configuration Utility
• Windows 98-ready Plug and Play Code
The MS440GX motherboard supports system BIOS shadowing, allowing the BIOS to execute
from 64-bit onboard write-protected DRAM.
During POST, the BIOS displays a message identifying the type of BIOS and the revision code.
The initial production BIOS is identified as 4M4SG0X0.86E.
BIOS Upgrades
NOTE
✏
Please review the instructions distributed with the upgrade before attempting a BIOS upgrade.
The BIOS can be upgraded from a diskette using the Intel Flash Memory Update utility that is
available from Intel. This utility does BIOS upgrades as follows:
• Updates the flash BIOS from a file on a disk
• Updates the language section of the BIOS
• Makes sure that the upgrade BIOS matches the target system to prevent accidentally installing
a BIOS for a different type of system.
BIOS upgrades and the update utility are available from Intel through the Intel World Wide Web
site.
Chapter 4 details the procedure for executing a BIOS upgrade.
27
MS440GX Motherboard Product Guide
BIOS Flash Memory Organization
The Intel E28F004BXT80 4-Mbit flash component is organized as 512 KB x 8 bits and is divided
into areas as described in Table 10. The table shows the addresses in the ROM image in normal
mode (the addresses change in BIOS Recovery Mode).
Table 10.Flash Memory Organization
Address (Hex)SizeDescription
FFFFC000 - FFFFFFFF16 KBBoot Block
FFFFA000 - FFFFBFFF8 KBVital Product Data (VPD) Extended System Configuration Data
(ESCD) (DMI configuration data / Plug and Play data)
FFFF9000 - FFFF9FFF4 KBUsed by BIOS (e.g., for Event Logging)
FFFF8000 - FFFF8FFF4 KBOEM logo or Scan Flash Area
FFF80000 - FFFF7FFF480 KBMain BIOS Block
Piezoelectric Speaker (N)
The onboard piezoelectric speaker is enabled by a jumper on pins 1 and 2 of the front panel
connector.
The onboard speaker can be disabled by removing the jumper. An outboard speaker can be
connected in its place by a jumper on pins 1 and 4.
This speaker provides error beep code information during the POST in the event that the computer
cannot use the video interface. The speaker is not connected to the audio subsystem and does not
receive output from the audio subsystem.
28
2Installation and Removal Procedures
This chapter explains how to remove and install the MS440GX motherboard and its various
component parts. The chapter covers the following topics:
Topic or ProcedurePage
Safety Considerations30
How to Install the Processor Retention Mechanism30
How to Install a Single Processor37
How to Install a Second Processor38
How to Remove and Install the Motherboard40
How to Set Processor Speed41
Jumper Settings42
How to Remove a Processor43
How to Upgrade a Processor44
How to Install the Termination Card45
How to Remove the Termination Card46
How to Install Memory47
How to Remove Memory48
How to Replace the Battery49
How to Clear Passwords51
29
MS440GX Motherboard Product Guide
Safety Considerations
CAUTION
Before removing or installing the motherboard or any other system component, observe the
following safety guidelines:
See Appendix B: Regulatory & Integration Information for safety requirements and precautions.
Always follow the steps in the procedure in the correct order (i.e., as written).
Set up a log to record identification information about your computer.
Wear an antistatic wrist wrap and place the motherboard on a conductive foam pad when working
on it.
WARNINGS
The procedures in this section assume that you are familiar with the general terminology
associated with personal computers and with the safety practices and regulatory compliance
required for using and modifying electronic equipment including but not limited to the
following:
Turn off system AC power by unplugging the AC power cord from the wall outlet. Disconnect
the computer from any telecommunications systems, networks, and modems attached before
performing any of the procedures described in this section else personal injury or equipment
damage can result.
CAUTION
Electrostatic discharge (ESD) can damage components. Therefore, protect against electrostatic
discharge (ESD) by performing the procedures described in this section only at an ESD
workstation or by wearing an antistatic wrist wrap and attaching it to a metal part of your
computer’s chassis.
How to Install the DRM Fans and Processor Retention
Mechanism
NOTES
✏
Dual Retention Mechanism (DRM) fans must be installed in the DRM end stands prior to installing
the processor retention mechanism on the motherboard.
The following procedure table combines the fan installation and processor retention mechanism
installation procedures.
30
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