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Memory Address Map
Memory Address
00100000h-000F0000h
000CD000h-000C0000h
000C0000h-000A0000h
000A0000h-00000000h
I/O Address Map
I/O Address
000-00F
020-021
040-043
060, 064
061
040B
061
070-071
080-08F
0A0-0A1
0C0-0DF
0F0-0FF
170-177
1F0-1F7
220-22F
240-24F
278-27F
378,37A
3B0-3BB
3C0-3DF
3F0h-3F7
3F0-3F7
480-48F, 4D6
4D0-4D1
CF8-CFF
IRQ Assignment Map
Interrupt Channel
IRQ00
IRQ01
IRQ02
IRQ03
IRQ04
IRQ05
IRQ06
IRQ07
IRQ08
IRQ09
IRQ10
IRQ11
Chapter 1
Size
64KB
128 KB
640KB
DMA controller-1
Interrupt controller-1
Timer 1
Keyboard controller 38859 chip select
System speaker out
DMA controller-1
System speaker
Real-time clock and NMI mask
DMA page register
Interrupt controller-2
DMA controller-2
Numeric data processor
2nd EIDE device (CD-ROM) select
1st EIDE device (hard drive) select
Audio
Audio (optional)
Parallel port 3
Paraller port 1
Video Controller
Standard Floppy Disk Controller
Floppy disk controller
DMA controller-1
PCI configuration register
System timer
Keyboard
Programmable Interrup Controller
FIR
Communications Port (COM1)
Free
Standard Floppy Disk Controller
Free
Real Time Clock
ACPI Compliment System
SMBUS Controller
Free
Function
System BIOS
VGA BIOS
Video memory (VRAM)
Conventional memory
Function
Function(Hardware)
33
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