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Technical Reference Guide www.hp.com 4-7
System Support
The PCI interrupts can be configured by PCI Configuration Registers 60h..63h to share the
standard ISA interrupts (IRQn).
✎
The APIC mode is supported by Windows NT, Windows 2000, and Windows XP, and Windows
Vista operating systems.
4.3.2 Direct Memory Access
Direct Memory Access (DMA) is a method by which a device accesses system memory without
involving the microprocessor. Although the DMA method has been traditionally used to transfer
blocks of data to or from an ISA I/O device, PCI devices may also use DMA operation as well.
The DMA method reduces the amount of CPU interactions with memory, freeing the CPU for
other processing tasks. For detailed information regarding DMA operation, refer to the data
manual for the AMD SB700 South Bridge.
Table 4-4.
PCI Interrupt Distribution
System Interrupts
System Board
Connector
PIRQ
A
PIRQ
B
PIRQ
C
PIRQ
D
PIRQ
E
PIRQ
F
PIRQ
G
PIRQ
H
PCI slot 1 (J20) A B C D
- Technical Reference Guide 1
- First Edition (October 2008) 2
- Contents 3
- 4 System Support 4
- 5 Input/Output Interfaces 4
- 8SYSTEM BIOS 6
- A Error Messages and Codes 6
- 1.4 Notational Conventions 8
- Table 1-1 9
- Table 1-1 (Continued) 10
- Introduction 16
- System Overview 17
- 2.2 Features 18
- Table 2-1 19
- 2.3 System Architecture 20
- Power Supply 21
- 2.3.1 AMD Processor Support 22
- 2.3.2 Chipset 22
- 2.3.3 Support Components 23
- 2.3.4 System Memory 23
- 2.3.5 Mass Storage 24
- 2.3.6 Serial Interface 24
- 2.3.10 Audio Subsystem 25
- 2.4 Specifications 26
- Table 2-7 27
- Physical Specifications 27
- Processor/Memory Subsystem 29
- 3.2 AMD Processors 30
- 3.3 Memory Subsystem 31
- System Support 35
- Software/Driver Layer 36
- Transaction Protocol Layer 36
- 4.2.3 Option ROM Mapping 37
- 4.2.4 PCI Interrupts 37
- 4.2.6 PCI Connectors 38
- PCI Express Connectors 39
- 4.3 System Resources 40
- 4.3.2 Direct Memory Access 41
- 4.4.1 Clearing CMOS 42
- 4.5 System Management 43
- Power-On / Setup Password 44
- Cable Lock Provision 44
- I/O Interface Security 44
- 4.5.2 Power Management 45
- 4.5.3 System Status 46
- 4.6.1 System I/O Map 47
- Table 4-8 48
- System I/O Map 48
- 4.6.2 GPIO Functions 49
- Input/Output Interfaces 51
- 5.2 SATA Interfaces 52
- 5.3 Diskette Drive Interface 54
- Table 5-2 55
- 5.4 Serial Interface 56
- Table 5-4 58
- Table 5-5 60
- 5.7.1 USB Connector 61
- 5.7.2 USB Cable Data 62
- 5.8 Audio Subsystem 63
- 5.8.1 HD Audio Controller 64
- 5.8.2 HD Audio Link Bus 64
- 5.8.3 Audio Multistreaming 64
- 5.8.4 Audio Specifications 65
- 5.9.1 Wake-On-LAN Support 67
- 5.9.4 NIC Connector 68
- 5.9.5 NIC Specifications 68
- Integrated Graphics Processor 69
- PCIe I/F 70
- 6.3 Upgrading 71
- 6.4 Monitor Connectors 72
- 6.4.2 DVI-D Connector 73
- Power and Signal Distribution 75
- 7.2.1 SFF Power Supply 76
- 7.2.2 MT Power Supply 77
- 7.3 Power C on tro l 78
- Table 7-4 79
- Power LED Indications 79
- Power LED Condition 79
- 7.3.2 Wake Up Eve nts 80
- 7.3.3 Power Management 81
- 7.4 Signal Distribution 82
- SYSTEM BIOS 85
- 8.2 ROM Flashing 86
- 8.3 Boot Functions 87
- 8.3.4 Boot Error Codes 88
- Table 8-2 89
- 8.4.1 System ID and ROM Type 90
- 8.4.2 Temperature Status 90
- 8.5 SMBIOS 91
- 8.6 USB Legacy Support 92
- 8.7 Management Functions 92
- Check for ROM update 95
- Invalid Electronic Serial 95
- Network Server Mode Active 96
- 67xx-xx) 110
- (8601-xx) 111
- Error Messages and Codes 112
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