APIC: Advanced Programmable Interrupt Controller
Use of the APIC interrupt mode is enabled using the field APIC - IO APIC Mode, available
from the ACPI Control sub-menu in the BIOS. See page
IRQ
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Issue G
Interrupt source
Cascade from 8259
Keyboard controller
8259 counter 0
Serial port COM2
Serial port COM1
SMBus controller
Floppy disk controller
Configurable
High Performance Event Timer/RTC
ACPI Subsystem interrupt
Configurable
Configurable
PS/2 compatible mouse
Coprocessor error
Primary IDE controller
Configurable, reserved for the Compact Flash IDE interface when used
PCI PIRQ[A]#
Connections: VGA controller, PCI UART and USB UHCI controller
PCI PIRQ[B]#
Connections: AC97 Audio CODEC controller
PCI PIRQ[C]#
Connections: IEEE1394 Host controller, USB UHCI controller
PCI PIRQ[D]#
Connections: Cardbus controller, USB UHCI controller
PCI PIRQ[E]#
Connections: 82562ET Ethernet controller, PCI expansion slot
PCI PIRQ[F]#
Connections: PCI expansion slot
PCI PIRQ[G]#
Connections: 82541GI/82551QM Ethernet controller, PCI expansion slot
PCI PIRQ[H]#
Connections: USB2.0 EHCI Controller, PCI expansion slot
Detailed hardware description
78
for further details.
125
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