Intel D845GEBV2 BLKD845GERG2-10PK User Manual
Product codes
BLKD845GERG2-10PK
53
2 Technical
Reference
What This Chapter Contains
2.1
Introduction.................................................................................................................53
2.2
Memory Map ..............................................................................................................53
2.3
Fixed I/O Map.............................................................................................................54
2.4
DMA Channels ...........................................................................................................55
2.5
PCI Configuration Space Map ....................................................................................55
2.6
Interrupts ....................................................................................................................56
2.7
PCI Interrupt Routing Map ..........................................................................................57
2.8
Connectors .................................................................................................................59
2.9
Jumper Blocks ............................................................................................................72
2.10
Mechanical Considerations.........................................................................................74
2.11
Electrical Considerations ............................................................................................78
2.12
Thermal Considerations..............................................................................................81
2.13
Reliability ....................................................................................................................84
2.14
Environmental ............................................................................................................84
2.15
Regulatory Compliance ..............................................................................................85
2.1 Introduction
Sections 2.2 - 2.6 contain several standalone tables. Table 19 describes the system memory map,
Table 20 shows the I/O map, Table 21 lists the DMA channels, Table 22 defines the PCI
configuration space map, and Table 23 describes the interrupts. The remaining sections in this
chapter are introduced by text found with their respective section headings.
Table 20 shows the I/O map, Table 21 lists the DMA channels, Table 22 defines the PCI
configuration space map, and Table 23 describes the interrupts. The remaining sections in this
chapter are introduced by text found with their respective section headings.
2.2 Memory Map
Table 19. System Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
1024 K - 2097152 K
100000 - 7FFFFFFF
2047 MB
Extended memory
960 K - 1024 K
F0000 - FFFFF
64 KB
Runtime BIOS
896 K - 960 K
E0000 - EFFFF
64 KB
Reserved
800 K - 896 K
C8000 - DFFFF
96 KB
Available high DOS memory (open
to the PCI bus)
to the PCI bus)
640 K - 800 K
A0000 - C7FFF
160 KB
Video memory and BIOS
639 K - 640 K
9FC00 - 9FFFF
1 KB
Extended BIOS data (movable by
memory manager software)
memory manager software)
512 K - 639 K
80000 - 9FBFF
127 KB
Extended conventional memory
0 K - 512 K
00000 - 7FFFF
512 KB
Conventional memory