2 Technical Reference

What This Chapter Contains

 

2.1

Introduction................................................................................................................

33

2.2

Memory Map .............................................................................................................

33

2.3

I/O Map .....................................................................................................................

34

2.4

DMA Channels ..........................................................................................................

35

2.5

PCI Configuration Space Map ...................................................................................

36

2.6

Interrupts ...................................................................................................................

36

2.7

PCI Interrupt Routing Map .........................................................................................

37

2.8

Connectors ................................................................................................................

38

2.9

Jumper Block.............................................................................................................

49

2.10 Mechanical Considerations........................................................................................

51

2.11

Electrical Considerations ...........................................................................................

53

2.12

Thermal Considerations.............................................................................................

55

2.13

Reliability ...................................................................................................................

56

2.14

Environmental............................................................................................................

57

2.15 Regulatory Compliance .............................................................................................

58

2.1 Introduction

Sections 2.2 – 2.6 contain several standalone tables. Table 11 describes the system memory map, Table 12 shows the I/O map, Table 13 lists the DMA channels, Table 14 defines the PCI configuration space map, and Table 15 describes the interrupts. The remaining sections in this chapter are introduced by text found with their respective section headings.

2.2 Memory Map

Table 11. System Memory Map

Address Range (decimal)

Address Range (hex)

Size

Description

1024 K – 262144 K

100000 – FFFFFFF

255 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 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)

512 K – 639 K

80000 – 9FBFF

127 KB

Extended conventional memory

0 K – 512 K

00000 – 7FFFF

512 K

Conventional memory

 

 

 

 

33