Page 33
Express-IA533
User’s Manual
Page 33
Express-IA533
User’s Manual
Express-HR
User’s Manual
Page 33
Page 33
Express-HR
User’s Manual
8.4
Interrupt Request (IRQ) Lines
PIC 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
Available
N/A
Yes
6
Available
N/A
Yes
7
Available
N/A
Yes
8
Real-time clock
Internal RTC / HPET #1
No
9
SCI / PCI
IRQ9 via SERIRQ
No
10
Available
N/A
Yes
11
Available
N/A
Yes
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
Summary of Contents for Express-HR
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