System Resources
Interrupt Assignment
IRQ Address
Description
0
System Timer
1
Keyboard (KB output buffer full)
2
Programmable Interrupt Controller
3
Serial Port 2 (COM2)
4
Serial Port 1 (COM1)
5
AC'97 Audio for VIA Audio Controller
6
Reversed
7
Parallel Port 1
8
Real-Time Clock
9
VIA Tech 3038 PCI To USB Universal Host Controller
10
S3 Graphics Twister
11
Realtek RTL 8139(A/B/C/8130) PCI Fast Ethernet NIC
12
PS/2 Mouse
13
Numeric data processor
14
Primary IDE Controller
15
Secondary IDE Controller
I/O Address Space
Adr e s s
Description
0000 - 000F
DMA Controller
0010 - 001F
Motherboard Resources
0020 - 0021
PIC
0022 - 003F
Motherboard Resources
0040 - 0043
System Timer
0044 - 005F
Motherboard Resources
0060 - 0060
Key board
0061 - 0061
Systems Speaker
0062 - 0063
Motherboard Resources
0064 - 0064
Key board
0065 - 006F
Motherboard Resources
0070 - 0073
System CMOS / Real time clock
0074 - 007F
Motherboard Resources
16
3312400 User's Manual