41
2 Technical Reference
What This Chapter Contains
2.1 Memory Map ................................................................................................................41
2.2 Fixed I/O Map...............................................................................................................42
2.3 DMA Channels.............................................................................................................43
2.4 PCI Configuration Space Map......................................................................................43
2.5 Interrupts......................................................................................................................44
2.6 PCI Conventional Interrupt Routing Map .....................................................................45
2.7 Connectors...................................................................................................................46
2.8 Jumper Block ...............................................................................................................56
2.9 Mechanical Considerations..........................................................................................57
2.10 Electrical Considerations..............................................................................................59
2.11 Thermal Considerations...............................................................................................61
2.12 Reliability......................................................................................................................63
2.13 Environmental ..............................................................................................................64
2.14 Regulatory Compliance................................................................................................65
2.1 Memory Map
Table 8 lists the system memory map.
Table 8. 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 Potential available high DOS
memory (open to the PCI
Conventional bus). Dependent on
video adapter used.
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)
512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
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