Express-HR
User’s Manual
Page 34
APIC Mode
IRQ#
Typical Interrupt Resource
Connected
Available
0
Counter 0
Internal Timer / Counter 0 output / HPET #0 No
1
Keyboard controller
IRQ1 via SERIRQ
No
2
Cascade interrupt from slave PIC
Slave controller INTR output
No
3
Serial Port 2 (COM2)
IRQ3 via SERIRQ
No
4
Serial Port 1 (COM1)
IRQ4 via SERIRQ
No
5
Smbus&Thermal controller
IRQ5 via SERIRQ
No
6
Reserved
N/A
No
7
Reserved
N/A
No
8
Real-time clock
Internal RTC / HPET #1
No
9
SCI / PCI
IRQ9 via SERIRQ
No
10
Reserved
N/A
No
11
Reserved
N/A
No
12
PS/2 Mouse
IRQ12 via SERIRQ
No
13
Math Processor
N/A
No
14
SATA Primary
IRQ14 via SERIRQ
No
15
SATA Secondary
IRQ15 via SERIRQ
No
16
PCIE Root Port 0
PCIE Root Port 0
Yes
EHCI Controller 0,
EHCI Controller 0,
HD Graphics
HD Graphics
ME
ME
17
N/A
N/A
Yes
18
N/A
N/A
Yes
19
N/A
SATA controller 0
Yes
SATA controller 1
20
N/A
PCH 82579LM Lan controller
Yes
21
N/A
N/A
Yes
22
N/A
HDA
Yes
23
N/A
EHCI Controller 1
Yes
Summary of Contents for Express-HR
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