Intel Desktop Board D845GLLY Guide

Technical Product Specification
for Intel®Desktop Boards
using the Intel®845GL Chipset
April 2002
Order Number: A90788-001
Intel®Desktop Boards using the Intel®845GL Chipset may contain design defects or errors known as errata that may cause the product to deviate from published specifications.
Current characterized errata are documented in the Specification Update for Intel Desktop Boards using the Intel 845GL Chipset.

Revision History
Revision Revision History Date
-001 First release of the Technical Product Specification for Intel®Desktop
Boards using the Intel®845GL Chipset.
April 2002
This product specification applies to only standard Intel Desktop Boards using the Intel 845GL
Chipset with BIOS identifier LY84510.86A.
Changes to this specification will be published in the Specification Update for Intel Desktop
Boards using the Intel 845GL Chipset before being incorporated into a revision of this document.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL®PRODUCTS. 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
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which the failure of the Intel product could create a situation where personal injury or death may occur.
Intel may make changes to specifications, product descriptions, and plans at any time, without notice.
Intel Desktop Boards using the Intel 845GL Chipset may contain design defects or errors known as errata that 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.
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.
Intel, Pentium, Celeron, and LANDesk are registered trademarks of Intel Corporation or its subsidiaries in the United States
and other countries.
†Other names and brands may be claimed as the property of others.
Copyright 2002, Intel Corporation. All rights reserved.

iii
Preface
This Technical Product Specification (TPS) describes the features common to Intel Desktop
Boards using the Intel 845GL Chipset. This specification is to be used with Product Supplement
documents (available separately) that describe features unique to individual members of the
product family.
Intended Audience
The TPS is intended to provide detailed, technical information about Intel Desktop Boards using
the Intel 845GL Chipset and their components to the vendors, system integrators, and other
engineers and technicians who need this level of information. It is specifically not intended for
general audiences.
What This Document Contains
Chapter Description
1 A description of the hardware used on these Intel Desktop boards
2 A description of the resources of the Desktop Boards
3 An overview of the BIOS Setup program
4 The contents of the BIOS Setup program’s menus and submenus
5 A description of the BIOS error messages, beep codes, and POST codes
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these
symbols and abbreviations appear in all specifications of this type.
Footnotes, Notes, Integrator’s Notes, Cautions, and Warnings
Footnotes
Footnotes call attention to features that may not be standard or the implementation of which may
vary depending on the Intel Desktop Board being used. Chapter 1 of each Product Supplement
Document includes a footnote cross reference table.
✏ NOTE
Notes call attention to important information.

Technical Product Specification for Intel Desktop Boards using the Intel 845GL Chipset
iv
# INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to system
integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#).
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop boards, and X is the instance of the particular part
at that general location. For example, J5J1 is a connector, located at 5J. It is the first
connector in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
†This symbol is used to indicate third-party brands and names that are the property of their
respective owners.

v
Contents
1Product Description
1.1 Overview ..................................................................................................................... 9
1.1.1 Feature Summary ......................................................................................... 9
1.1.2 Block Diagram..............................................................................................11
1.2 Online Support ...........................................................................................................12
1.3 Operating System Support .........................................................................................12
1.4 Design Specifications .................................................................................................13
1.5 Processor ...................................................................................................................17
1.6 System Memory .........................................................................................................18
1.7 Intel®845GL Chipset..................................................................................................20
1.7.1 Intel®Extreme Graphics Controller...............................................................20
1.7.2 USB..............................................................................................................25
1.7.3 IDE Interfaces ..............................................................................................25
1.7.4 Real-Time Clock, CMOS SRAM, and Battery...............................................26
1.8 I/O Controller ..............................................................................................................26
1.8.1 Serial Ports ..................................................................................................27
1.8.2 Parallel Port..................................................................................................27
1.8.3 Diskette Drive Controller ..............................................................................27
1.8.4 Keyboard and Mouse Interface ....................................................................27
1.9 Audio Subsystem........................................................................................................27
1.9.1 Audio Connectors.........................................................................................28
1.9.2 Audio Subsystem Software ..........................................................................28
1.10 LAN Subsystem..........................................................................................................28
1.10.1 Intel®82562ET Platform LAN Connect Device.............................................29
1.10.2 RJ-45 LAN Connector with Integrated LEDs ................................................29
1.10.3 LAN Subsystem Software ............................................................................29
1.11 Hardware Management Subsystem............................................................................29
1.11.1 Fan Monitoring .............................................................................................30
1.11.2 Chassis Intrusion and Detection...................................................................30
1.12 Power Management ...................................................................................................30
1.12.1 ACPI.............................................................................................................31
1.12.2 Hardware Support ........................................................................................33
2Technical Reference
2.1 Introduction.................................................................................................................37
2.2 Memory Map ..............................................................................................................37
2.3 Fixed I/O Map.............................................................................................................38
2.4 DMA Channels ...........................................................................................................39
2.5 PCI Configuration Space Map ....................................................................................39
2.6 Interrupts ....................................................................................................................40
2.7 PCI Interrupt Routing Map..........................................................................................41
2.8 Environmental ............................................................................................................43

Technical Product Specification for Intel Desktop Boards using the Intel 845GL Chipset
vi
3BIOS Overview
3.1 Introduction.................................................................................................................45
3.2 BIOS Flash Memory Organization ..............................................................................45
3.3 Resource Configuration..............................................................................................45
3.3.1 PCI Autoconfiguration ..................................................................................45
3.3.2 PCI IDE Support...........................................................................................45
3.4 System Management BIOS (SMBIOS).......................................................................46
3.5 Legacy USB Support ..................................................................................................47
3.6 BIOS Updates ............................................................................................................47
3.6.1 Language Support........................................................................................48
3.6.2 Custom Splash Screen.................................................................................48
3.7 Recovering BIOS Data ...............................................................................................49
3.8 Boot Options...............................................................................................................49
3.8.1 CD-ROM Boot..............................................................................................49
3.8.2 Network Boot................................................................................................50
3.8.3 Booting Without Attached Devices ...............................................................50
3.8.4 Changing the Default Boot Device During POST..........................................50
3.9 Fast Booting Systems with Intel®Rapid BIOS Boot....................................................50
3.9.1 Peripheral Selection and Configuration ........................................................50
3.9.2 Intel Rapid BIOS Boot ..................................................................................51
3.10 BIOS Security Features..............................................................................................51
4BIOS Setup Program
4.1 Introduction.................................................................................................................53
4.2 Maintenance Menu .....................................................................................................54
4.3 Main Menu..................................................................................................................54
4.4 Advanced Menu..........................................................................................................55
4.4.1 PCI Configuration Submenu.........................................................................56
4.4.2 Boot Configuration Submenu .......................................................................57
4.4.3 Peripheral Configuration Submenu...............................................................58
4.4.4 IDE Configuration Submenu.........................................................................60
4.4.5 Diskette Configuration Submenu..................................................................63
4.4.6 Event Log Configuration Submenu...............................................................64
4.4.7 Video Configuration Submenu......................................................................65
4.4.8 USB Configuration Submenu .......................................................................66
4.4.9 Chipset Configuration Submenu...................................................................67
4.5 Security Menu ............................................................................................................68
4.6 Power Menu ...............................................................................................................69
4.6.1 ACPI Submenu ............................................................................................69
4.7 Boot Menu..................................................................................................................70
4.7.1 Boot Device Priority Submenu......................................................................71
4.7.2 Hard Disk Drives Submenu ..........................................................................72
4.7.3 Removable Devices Submenu .....................................................................72
4.7.4 ATAPI CD-ROM Drives Submenu................................................................73
4.8 Exit Menu ...................................................................................................................73

Contents
vii
5Error Messages and Beep Codes
5.1 BIOS Error Messages.................................................................................................75
5.2 Port 80h POST Codes................................................................................................77
5.3 Bus Initialization Checkpoints .....................................................................................81
5.4 Speaker .....................................................................................................................82
5.5 BIOS Beep Codes ......................................................................................................82
Figures
1. Block Diagram ............................................................................................................11
Tables
1. Feature Summary........................................................................................................ 9
2. Specifications .............................................................................................................13
3. Supported DDR DIMM Configurations........................................................................19
4. Supported SDR DIMM Configurations ........................................................................19
5. Direct Draw Supported Modes....................................................................................21
6. Video BIOS Video Modes Supported for Analog CRTs...............................................22
7. Supported Configuration Modes .................................................................................23
8. Details of bpp Configuration Modes............................................................................24
9. LAN Connector LED States ........................................................................................29
10. Effects of Pressing the Power Switch .........................................................................31
11. Power States and Targeted System Power ................................................................32
12. Wake-up Devices and Events.....................................................................................33
13. Fan Connector Function/Operation.............................................................................34
14. System Memory Map..................................................................................................37
15. Fixed I/O Map.............................................................................................................38
16. DMA Channels ...........................................................................................................39
17. PCI Configuration Space Map ....................................................................................39
18. Interrupts ....................................................................................................................40
19. PCI Interrupt Routing Map..........................................................................................42
20. Desktop Board Environmental Specifications .............................................................43
21. Boot Device Menu Options.........................................................................................50
22. Supervisor and User Password Functions ..................................................................52
23. BIOS Setup Program Menu Bar .................................................................................53
24. BIOS Setup Program Function Keys ..........................................................................53
25. Maintenance Menu .....................................................................................................54
26. Main Menu..................................................................................................................54
27. Advanced Menu..........................................................................................................55
28. PCI Configuration Submenu .......................................................................................56
29. Boot Configuration Submenu......................................................................................57
30. Peripheral Configuration Submenu.............................................................................58
31. IDE Configuration Submenu .......................................................................................60
32. Primary/Secondary IDE Master/Slave Submenus.......................................................61
33. Diskette Configuration Submenu ................................................................................63
34. Event Log Configuration Submenu .............................................................................64
35. Video Configuration Submenu....................................................................................65

Technical Product Specification for Intel Desktop Boards using the Intel 845GL Chipset
viii
36. USB Configuration Submenu......................................................................................66
37. Chipset Configuration Submenu .................................................................................67
38. Security Menu ............................................................................................................68
39. Power Menu ...............................................................................................................69
40. ACPI Submenu...........................................................................................................69
41. Boot Menu..................................................................................................................70
42. Boot Device Priority Submenu....................................................................................71
43. Hard Disk Drives Submenu ........................................................................................72
44. Removable Devices Submenu....................................................................................72
45. ATAPI CD-ROM Drives Submenu ..............................................................................73
46. Exit Menu ...................................................................................................................73
47. BIOS Error Messages.................................................................................................75
48. Uncompressed INIT Code Checkpoints......................................................................77
49. Boot Block Recovery Code Checkpoints ....................................................................77
50. Runtime Code Uncompressed in F000 Shadow RAM ................................................78
51. Bus Initialization Checkpoints .....................................................................................81
52. Upper Nibble High Byte Functions..............................................................................81
53. Lower Nibble High Byte Functions..............................................................................82
54. Beep Codes................................................................................................................83

9
1 Product Description
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features.
Table 1. Feature Summary
Form Factor microATX
Processor • Support for an Intel®Pentium®4 processor in a µPGA478 socket with a
400 MHz system bus
• Support for an Intel®Celeron®processor in a µPGA478 socket with a 400 MHz
system bus
Memory1• Two DIMM sockets supporting one of the following:
−2.5 V (only) 184-pin 200/266 MHz Double Data Rate (DDR) SDRAM DIMMs
with gold-plated contacts
−3.3 V (only) 168-pin 133 MHz Single Data Rate (SDR) SDRAM DIMMs with
gold-plated contacts
• Support for up to 2 GB system memory
NOTE: Desktop Boards using the Intel®845GL Chipset have been designed to
support DIMMs based on 512 Mbit technology for a maximum onboard
capacity of up to 2 GB, but this technology has not been validated.
Chipset Intel 845GL Chipset, consisting of:
• Intel®82845GL Graphics and Memory Controller Hub (GMCH)
• Intel®82801DB I/O Controller Hub (ICH4)
• 4 Mbit Firmware Hub (FWH)
Audio2Audio subsystem for AC ‘97 processing using the SigmaTel STAC9750/66 codec
I/O Control LPC Bus I/O controller (SMSC LPC47M102)
Video Intel®Extreme Graphics controller
continued
1Memory support (DDR SDRAM or SDR SDRAM) is product-dependent. For more information, refer to the
Product Supplement Document for your Desktop Board.
2Contact your Intel sales representative to determine if the audio subsystem is present on your Intel
Desktop Board.

Technical Product Specification for Intel Desktop Boards using the Intel 845GL Chipset
10
Table 1. Feature Summary (continued)
Peripheral
Interfaces
• Up to four USB ports
• Two serial ports
• One parallel port
• Two IDE interfaces with UDMA 33, ATA-66/100 support
• One diskette drive interface
• PS/2†keyboard and mouse ports
• Three fan connectors
Hardware
Management
Subsystem
• Two fan sense inputs used to monitor fan activity (through the I/O controller)
• Chassis intrusion detection
LAN3Intel®82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device
Instantly Available
PC Technology
• Support for PCI Local Bus Specification Revision 2.2
• Suspend to RAM support
• Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
For information about Refer to
The board’s compliance level with ACPI, Plug and Play, and SMBIOS Section 1.4, page 13
Available configurations for Intel Desktop Boards using the Intel 845GL Chipset Section 1.2, page 12
3Contact your Intel sales representative to determine if the LAN subsystem is present on your Intel Desktop
Board.