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Intel Desktop Board D845HV/D845WN Technical Product Specification 82. Uncompressed INIT Code Checkpoints 121 83. Boot Block Recovery Code Checkpoints 121 84. Runtime Code Uncompressed in F000 Shadow RAM 122 85. Bus Initialization Checkpoints 125 86. Upper Nibble High Byte Functions 125 87. Lower Nibble High Byte Functions 126 88. Beep Codes...127 x

Section	Page
Intel® Desktop Board D845HV/D845WN Technical Product Specification	1
Revision History / Disclaimer	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Notes, Cautions, and Warnings	3
Other Common Notation	4
Contents	5
1 Product Description	11
1.1 Board Differences	11
1.2 Overview	12
1.2.1 Feature Summary	12
1.2.2 Manufacturing Options	13
1.2.3 Board Layouts	14
1.2.4 Block Diagram	16
1.3 Online Support	17
1.4 Operating System Support	17
1.5 Design Specifications	18
1.6 Processor	21
1.7 System Memory	22
1.8 Intel® 845 Chipset	24
1.8.1 AGP	25
1.8.2 USB	25
1.8.3 IDE Support	27
1.8.4 Real-Time Clock, CMOS SRAM, and Battery	28
1.8.5 Intel® 82802AB 4 Mbit Firmware Hub (FWH)	29
1.9 I/O Controller	29
1.9.1 Serial Ports	29
1.9.2 Infrared Support	30
1.9.3 Parallel Port	30
1.9.4 Diskette Drive Controller	31
1.9.5 Keyboard and Mouse Interface	31
1.9.6 I/O Controller Option	31
1.10 Audio Subsystem (Optional)	32
1.10.1 Audio Connectors	33
1.10.2 Audio Subsystem Software	33
1.11 LAN Subsystem (Optional)	34
1.11.1 Intel® 82562ET Platform LAN Connect Device	34
1.11.2 RJ-45 LAN Connector with Integrated LEDs	34
1.11.3 LAN Subsystem Software	35
1.12 CNR (Optional)	35
1.13 Hardware Management Subsystem	36
1.13.1 Hardware Monitor Component (Optional)	36
1.13.2 Fan Monitoring	36
1.13.3 Chassis Intrusion and Detection	37
1.14 Power Management	37
1.14.1 ACPI	37
1.14.2 Hardware Support	41
2 Technical Reference	45
2.1 Introduction	45
2.2 Memory Map	45
2.3 I/O Map	46
2.4 DMA Channels	48
2.5 PCI Configuration Space Map	48
2.6 Interrupts	49
2.7 PCI Interrupt Routing Map	49
2.8 Connectors	51
2.8.1 Back Panel Connectors	52
2.8.2 Internal I/O Connectors	55
2.8.3 External I/O Connectors	68
2.9 Jumper Blocks	72
2.9.1 Front Panel Audio Connector/Jumper Block	72
2.9.2 BIOS Setup Configuration Jumper Block	73
2.10 Mechanical Considerations	74
2.10.1 D845HV Form Factor	74
2.10.2 D845WN Form Factor	75
2.10.3 I/O Shield	76
2.11 Electrical Considerations	78
2.11.1 Power Consumption	78
2.11.2 Add-in Board Considerations	78
2.11.3 Standby Current Requirements	79
2.11.4 Fan Connector Current Capability	80
2.11.5 Power Supply Considerations	80
2.12 Thermal Considerations	81
2.13 Reliability	83
2.14 Environmental	83
2.15 Regulatory Compliance	84
2.15.1 Safety Regulations	84
2.15.2 EMC Regulations	84
2.15.3 Product Certification Markings (Board Level)	85
3 Overview of BIOS Features	87
3.1 Introduction	87
3.2 BIOS Flash Memory Organization	88
3.3 Resource Configuration	88
3.3.1 PCI Autoconfiguration	88
3.3.2 PCI IDE Support	88
3.4 System Management BIOS (SMBIOS)	89
3.5 Legacy USB Support	89
3.6 BIOS Updates	90
3.6.1 Language Support	91
3.6.2 Custom Splash Screen	91
3.7 Recovering BIOS Data	91
3.8 Boot Options	92
3.8.1 CD-ROM and Network Boot	92
3.8.2 Booting Without Attached Devices	92
3.9 Fast Booting Systems with Intel® Rapid BIOS Boot	92
3.9.1 Peripheral Selection and Configuration	92
3.9.2 Intel Rapid BIOS Boot	93
3.10 BIOS Security Features	94
4 BIOS Setup Program	95
4.1 Introduction	95
4.2 Maintenance Menu	96
4.2.1 Extended Configuration Submenu	97
4.3 Main Menu	98
4.4 Advanced Menu	99
4.4.1 PCI Configuration Submenu	100
4.4.2 Boot Configuration Submenu	101
4.4.3 Peripheral Configuration Submenu	102
4.4.4 IDE Configuration Submenu	104
4.4.5 Diskette Configuration Submenu	107
4.4.6 Event Log Configuration Submenu	108
4.4.7 Video Configuration Submenu	109
4.5 Security Menu	110
4.6 Power Menu	111
4.6.1 ACPI Submenu	112
4.7 Boot Menu	113
4.7.1 Boot Device Priority Submenu	114
4.7.2 Hard Disk Drives Submenu	115
4.7.3 Removable Devices Submenu	115
4.7.4 ATAPI CD-ROM Drives Submenu	116
4.8 Exit Menu	117
5 Error Messages and Beep Codes	119
5.1 BIOS Error Messages	119
5.2 Port 80h POST Codes	121
5.3 Bus Initialization Checkpoints	125
5.4 Speaker (Optional)	126