26 Chapter 1
060, 064 Keyboard controller 3 8859 chip select
061 System speaker out
040B DMA controller-1
061 System speaker
070-071 Real-time clock and NMI mask
080-08F DMA page registe r
0A0-0A1 Interrupt controller-2
0C0-0DF DMA controller-2
0F0-0FF Numeric data processo r
120-13F
180-18F
Power management controller
170-177 2nd EIDE device (CD-ROM) select
1F0-1F7 1st EIDE devic e (hard drive) select
220-22F Audio
240-24F Audio (option al )
278-27F Parallel port 3
2E8-2EF COM4
2F8-2FF COM2 or FIR (optional)
378, 37A Parallel port 2
3BC-3BE Paraller port 1
3B0-3BB
3C0-3DF
Video Controller
3F0h-3F7 Standard Floppy Disk C ontroller
3E8-3EF COM3 or LT Win modem (optional)
3F0-3F7 Floppy disk contro lle r
3F8-3FF COM1
480-48F, 4D6 DMA controller-1
4D0-4D1
CF8-CFF
PCI configuration regi ster
IRQ Assignment Map
Interrupt Channel Function
IRQ0 System timer
IRQ1 Keyboard
IRQ2 Cascade
IRQ3 IR
IRQ4 COM1 (Serial port)
IRQ5 Reserved for R2 card
IRQ6 Floppy
IRQ7 LPT (Parallel port)
IRQ8 CMOS/RTC
IRQ9 SCI IRQ used by ACPI bus
IRQ10 Audio (PIRQB#), Modem (PIRQB#), SMBUS controller (PIRQB#), I EEE 1394
(PIRQ#), 802.11b (PIRQE#), LAN (PIRQTE#)
IRQ11 VGA (PIRQA#), USB (PIRQA#, PIRQ C#, INTD#), CardBus controller
(PIRQB#, PIRQB#)
I/O Address Map
I/O Address Function