2 Technical Reference
What This Chapter Contains
2.1
Introduction .................................................................................................................. 31
2.2
Memory Map ................................................................................................................ 31
2.3
DMA Channels ............................................................................................................. 32
2.4
Fixed I/O Map............................................................................................................... 32
2.5
2.6
Interrupts ...................................................................................................................... 34
2.7
2.8
Connectors................................................................................................................... 37
2.9
Jumper Blocks.............................................................................................................. 50
2.13 Reliability...................................................................................................................... 57
2.14 Environmental .............................................................................................................. 58
2.1 Introduction
Sections 2.2 - 2.6 contain several standalone tables. Table 9 describes the system memory map,
Table 10 lists the DMA channels, Table 11 shows the I/O map, Table 12 defines the PCI
configuration space map, and Table 13 describes the interrupts. The remaining sections in this
chapter are introduced by text found with their respective section headings.
2.2 Memory Map
Table 9 lists the system memory map.
Table 9.
System Memory Map
Address Range (decimal)
1024 K - 2097152 K
960 K - 1024 K
896 K - 960 K
800 K - 896 K
640 K - 800 K
639 K - 640 K
512 K - 639 K
0 K - 512 K
Address Range (hex)
100000 - 7FFFFFFF
F0000 - FFFFF
E0000 - EFFFF
C8000 - DFFFF
A0000 - C7FFF
9FC00 - 9FFFF
80000 - 9FBFF
00000 - 7FFFF
Size
Description
2047 MB
Extended memory
64 KB
Runtime BIOS
64 KB
Reserved
96 KB
Potential available high DOS
memory (open to the PCI bus).
Dependent on video adapter used.
160 KB
Video memory and BIOS
1 KB
Extended BIOS data (movable by
memory manager software)
127 KB
Extended conventional memory
512 KB
Conventional memory
31