Instruction Manual

System Resources 79
M-342
B.4 Interrupt Request (IRQ) Lines
APIC Mode
F080-F08F
F090-F09F
F0A0-F0A3
F0B0-F0B7
F0C0-F0C3
F0D0-F0D7
SATA Controller 1
F0E0-F0EF
F140-F147
SATA Controller 2
IRQ# Typical Interrupt Resource Connected to Pin
0 System Timer N/A
1 Keyboard controller N/A
2N/A N/A
3 Serial Port 2 (COM2) / PCI / ISA
IRQ3 via SERIRQ, IRQ3 at ISA
bus
4 Serial Port 1 (COM1) / PCI / ISA
IRQ4 via SERIRQ, IRQ4 at ISA
bus
5 Serial Port 3 (COM3) / PCI / ISA
IRQ5 via SERIRQ, IRQ5 at ISA
bus
6N/A N/A
7
Parallel Port/ Serial Port 4 / PCI /
ISA
IRQ7 via SERIRQ, IRQ7 at ISA
bus
8 Real-time clock N/A
9N/A N/A
10 Serial Port 5 (COM5) / PCI / ISA
IRQ10 via SERIRQ, IRQ10 at ISA
bus
11 Serial Port 6 (COM6) /PCI / ISA
IRQ11 via SERIRQ, IRQ11 at ISA
bus
Table B-4: IRQ Lines APIC Mode
Hex Range Device
Table B-3: IO Map