MU440EX Motherboard Specification Update

MU440EX
Motherboard
Specification Update
Release Date: January 1999
Order Number: 704527-008
The MU440EX motherboard may contain design defects or errors known as errata which may
cause the product to deviate from published specifications. Current characterized errata are
documented in this Specification Update.
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 retains the right to make changes to specifications and product descriptions at any time, without notice.
The MU440EX motherboard 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.
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.
* Third party brands and names are the property of their respective owners.
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
Copyright  1998, Intel Corporation
CONTENTS
REVISION HISTORY....................................................................................................................................v
PREFACE ...................................................................................................................................................vi
Specification Update for MU440EX Motherboards
GENERAL INFORMATION.......................................................................................................................... 3
SPECIFICATION CHANGES....................................................................................................................... 9
ERRATA.....................................................................................................................................................11
DOCUMENTATION CHANGES..................................................................................................................15
MU440EX SPECIFICATION UPDATE
REVISION HISTORY
Date of Revision
Version
Description
May 1998
-001
This document is the first Specification Update for the Intel 
MU440EX motherboard.
June 1998
-002
Added Documentation Change 1.
August 1998
-003
Added Specification Change 1, Errata 3-4 and Documentation
Changes 2-3.
September 1998
-004
Added Specification Change 2.
October 1998
-005
Updated status of Erratum 1. Added Specification Change 3.
November 1998
-006
Updated status of Erratum 4. Added Errata 5-7.
December 1998
-007
Added Errata 8-10.
January 1999
-008
Modified Erratum 10. Added Errata 11-13.
v
MU440EX SPECIFICATION UPDATE
PREFACE
This document is an update to the specifications contained in the MU440EX Motherboard Technical Product
Specification (Order number 701003). It is intended for hardware system manufacturers and software
developers of applications, operating systems, or tools. It will contain Specification Changes, Errata,
Specification Clarifications, and Documentation Changes.
Refer to the Pentium II Processor Specification Update (Order number 243337) for specification updates
concerning the Pentium II processor. Items contained in the Pentium II Processor Specification Update that
either do not apply to the MU440EX motherboard or have been worked around are noted in this document.
Otherwise, it should be assumed that any processor errata for a given stepping are applicable to the PBA
revision(s) associated with that stepping.
Refer to the 82443EX Specification Update (Order Number TBD) for specification updates concerning the
82443EX PCI A.G.P. Controller. Items contained in the 82443EX Specification Update that either do not
apply to the MU440EX motherboard or have been worked around are noted in this document. Otherwise, it
should be assumed that any controller errata for a given stepping are applicable to the PBA revision(s)
associated with that stepping.
Refer to the Intel 82371EB (PIIX4E) Specification Update (Order Number 290635) for specification updates
concerning the 82371EB PIIX4E. Items contained in the Intel 82371EB (PIIX4E) Specification Update that
either do not apply to the MU440EX motherboard or have been worked around are noted in this document.
Otherwise, it should be assumed that any PIIX4E errata for a given stepping are applicable to the Printed
Board Assembly (PBA) revision(s) associated with that stepping.
Nomenclature
Specification Changes are modifications to the current published specifications. These changes will be
incorporated in the next release of the specifications.
Errata are design defects or errors. Characterized errata may cause the MU440EX motherboard’s behavior
to deviate from published specifications. Hardware and software designed to be used with any given Printed
Board Assembly (PBA) and BIOS revision level must assume that all errata documented for that PBA and
BIOS revision level are present on all motherboards.
Specification Clarifications describe a specification in greater detail or further highlight a specification’s
impact to a complex design situation. These clarifications will be incorporated in the next release of the
specifications.
Documentation Changes include typos, errors, or omissions from the current published specifications.
These changes will be incorporated in the next release of the specifications.
vi
Specification Update for
MU440EX Motherboards
MU440EX SPECIFICATION UPDATE
GENERAL INFORMATION
Basic MU440EX Motherboard Identification Information
AA Revision
PBA Revision
440EX AGPSet
Stepping
BIOS Revision
Notes
698722-402
695747-402
A0
4M4UE0X1.86A.
0003.P02
1-5
698722-403
695747-403
A0
4M4UE0X1.86A.
0004.P03
1-5
698722-404
695747-404
A0
4M4UE0X1.86A.
0005.P04
1-5
698722-405
695747-405
A0
4M4UE0X1.86A.
0008.P07
1-5
698722-500
695747-500
A0
4M4UE0X1.86A.
0011.P10
1-5
698722-501
695747-501
A0
4M4UE0X1.86A.
0011.P10
1-5
698722-502
695747-502
A0
4M4UE0X1.86A.
0011.P10
1-5
702993-402
695747-402
A0
4M4UE0X1.86A.
0003.P02
1-5
702993-403
695747-403
A0
4M4UE0X1.86A.
0004.P03
1-5
702993-404
695747-404
A0
4M4UE0X1.86A.
0005.P04
1-5
702993-405
695747-405
A0
4M4UE0X1.86A.
0008.P07
1-5
702993-500
695747-500
A0
4M4UE0X1.86A.
0011.P10
1-5
702993-501
695747-501
A0
4M4UE0X1.86A.
0011.P10
1-5
702993-502
695747-502
A0
4M4UE0X1.86A.
0011.P10
1-5
702999-402
695747-402
A0
4M4UE0X1.86A.
0003.P02
1-5
702999-403
695747-403
A0
4M4UE0X1.86A.
0004.P03
1-5
702999-404
695747-404
A0
4M4UE0X1.86A.
0005.P04
1-5
702999-405
695747-405
A0
4M4UE0X1.86A.
0008.P07
1-5
702999-500
695747-500
A0
4M4UE0X1.86A.
0011.P10
1-5
3
MU440EX SPECIFICATION UPDATE
AA Revision
PBA Revision
440EX AGPSet
Stepping
BIOS Revision
Notes
702999-501
695747-501
A0
4M4UE0X1.86A.
0011.P10
1-5
702999-502
695747-502
A0
4M4UE0X1.86A.
0011.P10
1-5
718659-405
718658-405
A0
4M4UE0X3.86A.
0003.P02
1-5
718659-500
718658-500
A0
4M4UE0X3.86A.
0004.P03
1-5
718659-501
718658-501
A0
4M4UE0X3.86A.
0004.P03
1-5
718659-502
718658-502
A0
4M4UE0X3.86A.
0005.P04
1-5
NOTES:
1. The PBA number or AA number is found on a small label on the component side of the board.
2. The 440BX AGPset kit used on this PBA revision consists of two components as follows:
Device
Stepping
S-Spec Numbers
82443EX
A0
SL2SA
82371EB
A0
SL2MY
3.
4.
5.
4
The following errata are contained in the Pentium II Processor Specification Update (Order Number 243337) for the
Pentium II processor and either do not apply to the MU440EX motherboard or have been worked-around in this PBA
and/or BIOS revision: 3, 10-11, 17, 1AP-3AP. All other errata associated with the processor apply to this PBA revision.
The following items are contained in the Intel 82443EX Specification Update (Order Number TBD) and either do not
apply to the MU440EX motherboard or have been worked around in this PBA and/or BIOS revision: None. All other errata
associated with the PCIset apply to this PBA revision.
The following items are contained in the Intel 82371EB (PIIX4E) Specification Update (Order Number 290635) and either
do not apply to the MU440EX motherboard or have been worked around in this PBA and/or BIOS revision: None. All
other errata associated with the PIIX4E apply to this PBA revision.
MU440EX SPECIFICATION UPDATE
Summary Table of Changes
The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation
Changes which apply to the MU440EX motherboard. Intel intends to fix some of the errata in a future
revision of the motherboard, and to account for the other outstanding issues through documentation or
specification changes as noted. This table uses the following notations:
CODES USED IN SUMMARY TABLE
Doc:
Document change or update that will be implemented.
Fix:
This erratum is intended to be fixed in a future revision of the motherboard or
BIOS.
Fixed:
This erratum has been previously fixed.
NoFix:
There are no plans to fix this erratum.
Shaded:
This erratum is either new or modified from the previous version of the document.
NO.
PLANS
1
Doc
Support for 300 MHz Intel® Celeron™ Processors
SPECIFICATION CHANGES
2
Doc
Addition of optional graphics subsystem
3
Doc
Support for 300A and 333 MHz Intel Celeron processors
NO.
PLANS
1
Fixed
Serial mouse activity does not wake system after APM shutdown
ERRATA
2
NoFix
Advanced Power Management may suspend system during CD-ROM playback
3
Fixed
System may hang with Pentium ® II processor
4
Fixed
System using 3-mode floppy drive cannot read XDF format diskettes
5
Fixed
Onboard audio does not restart wave files upon return from APM suspend
6
Fixed
User can restore BIOS defaults with Administrator Password set
7
Fixed
BIOS does not log events when logging is enabled
8
Fixed
BIOS Setup does not display LAN and audio options after audio is disabled
9
Fixed
System BIOS may disconnect controllerless modems
10
Fixed
System may fail to boot with powered USB hub attached
11
NoFix
The MEMHOLE feature has been removed from the system BIOS
12
Fixed
System BIOS does not report that memory has decreased in size during the POST
process
13
Fixed
System BIOS does not recognize some keyboards unless NUMLOCK option is set to Auto
NO.
PLANS
1
Doc
Change to description of Manufacturing Options
2
Doc
In Section 1.7, Main Memory, “unbuttered” should be “unbuffered.” In Section 1.7, Main
Memory, “unbuttered” should be “unbuffered.”
3
Doc
Change to Section 3.8, Desktop Management Interface
DOCUMENTATION CHANGES
5
MU440EX SPECIFICATION UPDATE
The errata described in this specification update apply to combinations of PBA revision and BIOS revision as
shown in the table below. Descriptions of the individual errata referred to by number in the table below are
found in the ERRATA section of this document.
PBA Revision
BIOS Revision
695747-402
4M4UE0X1.86A.0003.P02
1-7, 9-10
4M4UE0X1.86A.0004.P03
1-5, 9-10
4M4UE0X1.86A.0005.P04
2-3, 5, 9-11
4M4UE0X1.86A.0008.P07
2-3, 5, 8-11, 13
4M4UE0X1.86A.0010.P09
2-3, 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2-3, 5, 9, 11
695747-403
695747-404
695747-405
6
Errata That Apply
4M4UE0X1.86A.0012.P11
2-3, 5, 11
4M4UE0X1.86A.0003.P02‡
1-7, 9-10
4M4UE0X1.86A.0004.P03
1-5, 9-10
4M4UE0X1.86A.0005.P04
2-3, 5, 9-11
4M4UE0X1.86A.0008.P07
2-3, 5, 8-11, 13
4M4UE0X1.86A.0010.P09
2-3, 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2-3, 5, 9, 11
4M4UE0X1.86A.0012.P11
2-3, 5, 11
‡
4M4UE0X1.86A.0003.P02
1-7, 9-10
4M4UE0X1.86A.0004.P03‡
1-5, 9-10
4M4UE0X1.86A.0005.P04
2-3, 5, 9-11
4M4UE0X1.86A.0008.P07
2-3, 5, 8-11, 13
4M4UE0X1.86A.0010.P09
2-3, 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2-3, 5, 9, 11
4M4UE0X1.86A.0012.P11
2-3, 5, 11
‡
4M4UE0X1.86A.0003.P02
1-2, 4-7, 9-10
4M4UE0X1.86A.0004.P03‡
1-2, 4-5, 9-10
‡
4M4UE0X1.86A.0005.P04
2, 5, 9-10
4M4UE0X1.86A.0008.P07
2, 5, 8-10
4M4UE0X1.86A.0010.P09
2. 5, 9-10
4M4UE0X1.86A.0011.P10
2, 5, 9
4M4UE0X1.86A.0012.P11
2, 5
MU440EX SPECIFICATION UPDATE
PBA Revision
695747-500
695747-501
BIOS Revision
Errata That Apply
‡
4M4UE0X1.86A.0003.P02
1-2, 4-7, 9-10
4M4UE0X1.86A.0004.P03‡
1-2, 4-5, 9-10
4M4UE0X1.86A.0005.P04‡
2, 5, 9-11
‡
4M4UE0X1.86A.0008.P07
2, 5, 8-11, 13
4M4UE0X1.86A.0010.P09‡
2. 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2, 5, 9, 11
4M4UE0X1.86A.0012.P11
2, 5, 11
‡
4M4UE0X1.86A.0003.P02
1-2, 4-7, 9-10
4M4UE0X1.86A.0004.P03‡
1-2, 4-5, 9-10
‡
695747-502
4M4UE0X1.86A.0005.P04
2, 5, 9-11
4M4UE0X1.86A.0008.P07‡
2, 5, 8-11, 13
4M4UE0X1.86A.0010.P09‡
2. 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2, 5, 9, 11
4M4UE0X1.86A.0012.P11
2, 5, 11
‡
4M4UE0X1.86A.0003.P02
1-2, 4-7, 9-10
4M4UE0X1.86A.0004.P03‡
1-2, 4-5, 9-10
‡
618658-405
618658-500
618658-501
4M4UE0X1.86A.0005.P04
2, 5, 9-11
4M4UE0X1.86A.0008.P07‡
2, 5, 8-11, 13
‡
4M4UE0X1.86A.0010.P09
2. 5, 9-11, 13
4M4UE0X1.86A.0011.P10
2, 5, 9, 11
4M4UE0X1.86A.0012.P11
2, 5, 11
4M4UE0X3.86A.0003.P02
2, 5, 9, 11-12
4M4UE0X3.86A.0004.P03
2, 5, 9, 11
4M4UE0X3.86A.0005.P04
2, 5, 11
‡
4M4UE0X3.86A.0003.P02
2, 5, 9, 11-12
4M4UE0X3.86A.0004.P03
2, 5, 9, 11
4M4UE0X3.86A.0005.P04
2, 5, 11
4M4UE0X3.86A.0003.P02‡
2, 5, 9, 11-12
4M4UE0X3.86A.0004.P03
2, 5, 9, 11
4M4UE0X3.86A.0005.P04
2, 5, 11
7
MU440EX SPECIFICATION UPDATE
‡
8
PBA Revision
BIOS Revision
618658-502
4M4UE0X3.86A.0003.P02‡
2, 5, 9
4M4UE0X3.86A.0004.P03‡
2, 5, 9
4M4UE0X3.86A.0005.P04
2, 5
Note:
Errata That Apply
This combination of BIOS revision and PBA revision has not undergone regression testing. Use of
a PBA with down-revision BIOS is an untested combination and is undertaken at the user’s risk.
MU440EX SPECIFICATION UPDATE
SPECIFICATION CHANGES
The Specification Changes listed in this section apply to the MU440EX Motherboard Technical Product
Specification (Order Number 701003). All Specification Changes will be incorporated into a future version of
that specification.
Support for 300 MHz Intel® Celeron™ Processors
1.
The motherboard supports 300 MHz Intel® Celeron™ processors. Section 1.6, Microprocessor, will be
modified to add 300 MHz to the list of supported processor speeds.
The table of processor speeds in Section 1.6 will be modified to add the following line:
Processor Type
Processor Speed
Packaging Type
Celeron
300 MHz
S.E.P. package
BIOS revision 4M4UE0X1.86A.0005.P04 or later is required for the motherboard to properly support a
300 MHz processor.
2.
Addition of Optional Graphics Subsystem
The following will be added to Section 1.11 as an optional video configuration:
An optional graphics subsystem features the ATI Rage* Pro Turbo 2X graphics controller. See Intel’s World
Wide Web site (see Section 6.1) for graphics drivers.
ATI RAGE PRO TURBO 2X GRAPHICS CONTROLLER
The ATI Rage Pro Turbo 2X Graphics Controller provides the following features:
•
Comprehensive A.G.P. support, including 1X (66 MHz) and 2X (133 MHz) fully pipelined
operation and sideband support
•
Full bus mastering support
•
Triple 8-bit palette DAC with gamma correction. Pixel rates up to 230 MHz
•
Supports DDC1 and DDC2B+ for Plug and Play monitors
•
Game acceleration including support for Microsoft’s DirectDraw*: double buffering, virtual
sprites, transparent blit, masked blit, and context chaining
•
4 KB on-chip texture cache
•
Direct3D* texture lighting
•
4 MB of 100 MHz SGRAM on the motherboard
9
MU440EX SPECIFICATION UPDATE
Motion Video Acceleration
The ATI Rage Pro Turbo 2X supports motion video acceleration by providing:
•
Multistream video for video conferencing
•
Filtered horizontal/vertical, up/down, scaling enhances playback quality
•
Enhanced line buffer allows vertical filtering of native MPEG-2 size (720 x 480) images
•
DVD/MPEG-2 decode assist
•
Filter circuitry that eliminates video artifacts caused by displaying interlaced video on
noninterlaced displays
3.
•
Hardware mirroring for flipping video images in video conferencing systems
•
Bidirectional bus mastering engine with planar YUV-to-packed format converter
•
YUV to RGB color space converter with support for both packed and planar YUV:

YUV 4:2:2, YUV 4:1:0, and YUV 4:2:0

RGB 32, RGB 16/15, RGB 8, and monochrome
Support for 300A and 333 MHz Intel® Celeron™ Processors
The motherboard supports 300A and 333 MHz Intel® Celeron™ processors. Section 1.6, Microprocessor, will
be modified to add 300A and 333 MHz to the list of supported processor speeds.
The table of processor speeds in Section 1.6 will be modified to add the following lines:
Processor Type
Processor Speed
Packaging Type
Celeron
300A MHz
S.E.P. package
Celeron
333 MHz
S.E.P. package
BIOS revision 4M4UE0X1.86A.0011.P10 or later or BIOS revision 4M4UE0X3.86A.0004.P03 or later is
required for the motherboard to properly support these processors.
10
MU440EX SPECIFICATION UPDATE
ERRATA
1.
Serial Mouse Activity Does Not Wake System After APM Shutdown
PROBLEM: The system BIOS does not recognize activity from a serial mouse as an APM event.
IMPLICATION: The system will not be restored from a power-managed state until keyboard activity occurs.
BIOS 4M4UE0X3.86A is not subject to this erratum.
WORKAROUND: The system BIOS does recognize activity from a PS/2* style mouse.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0005.P04.
2.
Advanced Power Management May Suspend System During CDROM Playback
PROBLEM: ATAPI devices (such as CD-ROM and DVD drives) do not reset the inactivity timer that is used
by Advanced Power Management to determine when to place the system into suspend mode.
IMPLICATION: When playback of an audio CD or a DVD file is the only system activity, the system will go into
suspend mode when the inactivity timer expires.
WORKAROUND: Temporarily disable the Low-power standby and Shut off monitor options on the Display
Properties, Screen Saver menu. This menu is available from the Windows* 95 Control Panel.
STATUS: This erratum will not be fixed.
3.
System May Hang With Pentium® II Processor
PROBLEM: The design of the motherboard may allow the voltage on the Vtt line to drop below the minimum
required by the Pentium® II processor.
IMPLICATION: During periods of high processor usage (for example, in a 3D graphics program), some
systems using the Pentium II processor may lock up, requiring system power to be recycled in order to
restart. This erratum does not affect systems using the Intel ® Celeron™ processor. Boards with PBA
618658 are not subject to this erratum.
WORKAROUND: None.
STATUS: This erratum was fixed in PBA revision 695747-405.
4.
System Using 3-Mode Floppy Drive Cannot Read XDF Format
Diskettes
PROBLEM: The buffer area that stores floppy drive parameters does not have room to store the speed
information to allow a 3-mode floppy drive to read a diskette in the XDF format.
IMPLICATION: A system that has a 3-mode floppy drive cannot be used to install a program or operating
system, such as PC-DOS 7.0, that is distributed on XDF format diskettes. BIOS 4M4UE0X3.86A is not
subject to this erratum.
WORKAROUND: None.
11
MU440EX SPECIFICATION UPDATE
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0005.P04.
5.
Onboard Audio Does Not Restart Wave Files Upon Return From
APM Suspend
PROBLEM: If a DOS game is playing a wave audio (WAV) file at the time the system goes into suspend
mode, the audio will not resume when the system returns from suspend mode.
IMPLICATION: No wave audio will be available until the system is restarted.
WORKAROUND: None.
STATUS: This erratum was fixed in audio driver revision 4.05.1018.
6.
User Can Restore BIOS Defaults With Administrator Password Set
PROBLEM: The user can use the F9 key in the BIOS Setup program to restore CMOS defaults even though
an adminstrator password has been set.
IMPLICATION: The user may be able to change a setting that the administrator had set for network
management reasons. BIOS 4M4UE0X3.86A is not subject to this erratum.
WORKAROUND: None.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0004.P03.
7.
BIOS Does Not Log Events When Logging is Enabled
PROBLEM: The BIOS does not update the event log even though Event Logging is enabled in the BIOS
Setup program.
IMPLICATION: The user will not have access to information that might assist in troubleshooting system
problems. BIOS 4M4UE0X3.86A is not subject to this erratum.
WORKAROUND: None.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0004.P03.
8.
BIOS Setup Does Not Display LAN and Audio Options After Audio
is Disabled
PROBLEM: The options to enable or disable onboard LAN and audio functions are not displayed by the BIOS
Setup program if audio has been disabled in Setup.
IMPLICATION: The user will not be able to re-enable audio or change the status of the onboard LAN
subsystem if audio has been disabled. BIOS revisions 4M4UE0X1.86A.0005.P04 and earlier and all
revisions of BIOS 4M4UE0X3.86A are not subject to this erratum.
WORKAROUND: Restore default settings in the BIOS Setup program and restart the computer. This will reenable the audio subsystem and restore the option to control LAN settings.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0010.P09.
12
MU440EX SPECIFICATION UPDATE
9.
System BIOS May Disconnect Controllerless Modems
PROBLEM: Processor latency caused by internal BIOS routines may cause controllerless modems to lose
connections with remote modems.
IMPLICATION: The user may be forced to reconnect in order to complete data transfers.
WORKAROUND: None.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0012.P11 and in BIOS revision
4M4UE0X3.86A.0005.P04.
10.
System May Fail to Boot With Powered USB Hub Attached
PROBLEM: If a powered USB hub is connected to the system with no USB device plugged into the hub, the
system may boot very slowly or not boot at all. The hub will work normally if the system completes the boot
process or if it is connected to the USB port after boot.
IMPLICATION: A powered USB hub may require multiple reboots before the system can be used. BIOS
4M4UE0X3.86A is not subject to this erratum.
WORKAROUND: Unplug the hub during the boot process, or plug a USB device that does not have an
integrated USB hub into the onboard hub before booting the system.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0011.P10.
11.
The MEMHOLE Feature has Been Removed From the System BIOS
PROBLEM: The MEMHOLE feature, which allows the user to reserve an area below the 1 MB memory
boundary for use by an add-in card, has been removed from the system BIOS beginning with BIOS revisions
4M4UE0X1.86A.0005.P04 and 4M4UE0X3.86A.0003.P02.
IMPLICATION: ISA add-in cards that require reserved memory space below the 1 MB address may not
function with this motherboard.
WORKAROUND: None.
STATUS: This erratum will not be fixed.
12.
System BIOS Does Not Report That Memory has Decreased in Size
During the POST Process
PROBLEM: No error message is generated if the BIOS finds during the POST process that the amount of
system memory has decreased. No record of the event is placed in the DMI event log.
IMPLICATION: If a portion of memory becomes unusable, the user will not receive advance warning that less
memory than expected is available to the system. BIOS 4M4UE0X1.86A is not subject to this erratum.
WORKAROUND: None.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X3.86A.0004.P03.
13
MU440EX SPECIFICATION UPDATE
13.
System BIOS Does Not Recognize Some Keyboards Unless
NUMLOCK Option Is Set to Auto
PROBLEM: If the NUMLOCK option in the BIOS Setup program is set to anything other than Auto, the
system BIOS may not recognize a PS/2 keyboard at boot time. If this option is set to Auto, on those
keyboards the initial NUMLOCK state after boot will be Off instead of On. BIOS revisions
4M4UE0X1.86A.0005.P04 and earlier are not subject to this erratum.
IMPLICATION: A user may not be able to use the options in the BIOS Setup program to control the initial state
of the NUMLOCK key automatically. BIOS 4M4UE0X3.86A is not subject to this erratum.
WORKAROUND: None.
STATUS: This erratum was fixed in BIOS revision 4M4UE0X1.86A.0011.P10.
14
MU440EX SPECIFICATION UPDATE
DOCUMENTATION CHANGES
The Documentation Changes listed in this section apply to the MU440EX Motherboard Technical Product
Specification (Order Number 701003). All Documentation Changes will be incorporated into a future version
of that specification.
1.
Change to Description of Manufacturing Options
In Section 1.2, Manufacturing Options, paragraph one will be replaced in its entirety as follows:
The following are manufacturing options. Not all manufacturing options are available in all marketing
channels. Please contact your Intel representative to determine what manufacturing options are available to
you.
2.
Refer to Summary Table of Changes
3.
Change to Section 3.8, Desktop Management Interface
In Section 3.8, Desktop Management Interface (DMI), paragraph 2 will be replaced in its entirety as follows:
Intel can provide system manufacturers with a utility that programs system and chassis-related information
into the DMI space in Flash memory. The utility is used to program the BIOS during system manufacturing,
so that the BIOS can later report this information. Once written, this information cannot be overwritten by the
end user.
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