48
6.4.2 APIC
Mode
IRQ#
Typical Intterupt Resource
Connected to Pin
Available
0 Counter
0
N/A
No
1
Keyboard controller
IRQ1 via SERIRQ
No
2
Cascade interrupt from slave PIC
N/A
No
3
Serial Port 4 (COM4)
IRQ3 via SERIRQ
Note (1)
4
Serial Port 3 (COM3)
IRQ4 via SERIRQ
Note (1)
5
Serial Port 2 (COM2)
IRQ5 via SERIRQ
Note (1)
6 N/A
N/A
Note
(1)
7
Serial Port 1 (COM1)
IRQ7 via SERIRQ
Note (1)
8 Real-time
clock
N/A
No
9
N/A
IRQ9 via SERIRQ
Note (1)
10 N/A
N/A
Note
(1)
11 N/A
N/A
Note
(1)
12
PS/2 Mouse
IRQ12 via SERIRQ
Note (1)
13
FERR# logic
N/A
Note (1)
14
SATA Primary
IRQ14 via SERIRQ
Note (1)
15
SATA Secondary
IRQ15 via SERIRQ
Note (1)
16
N/A
P.E.G Root Port,Intel HDA, PCIE Port
0/1/2/3/4/5/6,I.G.D ,XHCI Controller
Note (1)
17
N/A
PCIE Port 0/1/2/3/4/5/6, P.E.G Root Port,
Note (1)
18
N/A
PCIE Port 0/1/2/3/4/5/6, P.E.G Root Port, SMBus
Controller
Note (1)
19
N/A
PCIE Port 0/1/2/3/4/5/6, P.E.G Root Port,
Note (1)
20
N/A
Gbe Controller
Note (1)
21 N/A
N/A
Note
(1)
22
N/A
Intel HDA
Note (1)
23 N/A
N/A
Note
(1)
Note (1):
These IRQs can be used for PCI devices when onboard device is disabled.
