In apic mode, 2 in apic mode – Kontron COMe-cSP2 User Manual
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58
7.1.2 In APIC mode
IRQ #
Used For
Available
Comment
0
Timer0
No
1
Keyboard
No
2
Cascade
No
3
External SIO - COM2
Yes (No)
Note (1)
4
External SIO - COM1
Yes (No)
Note (1)
5
PCI
for PCI
Dynamic (BIOS default)
6
External SIO
Yes (No)
Note (1)
7
External SIO - LPT1
Yes (No)
Note (1)
8
RTC
No
9
ACPI
No
Note (2)
10
PCI
for PCI
Dynamic (BIOS default)
11
PCI
for PCI
Dynamic (BIOS default)
12
PS/2 Mouse
Yes (No)
Note (1)
13
FPU
No
14
Primary IDE
No
Note (1)
15
PCI
for PCI
Dynamic (BIOS default)
16
PIRQ [A]
No
PCI IRQ line 1 + US15W graphics + SDcard + PCIe- Switch + HDAudio +
SATA Bridge + USB client (if enabled) (3)
17
PIRQ [B]
No
PCI IRQ line 2 + SDcard + PCIe- Switch, Note (3)
18
PIRQ [C]
No
PCI IRQ line 3 + LAN Controller + PCIe- Switch, Note (3)
19
PIRQ [D]
No
PCI IRQ line 4 + PCIe- Switch + PCIe2PCI-Bridge, Note (3)
20
PIRQ [E]
No
USB UHCI Controller #1, Note (3)
21
PIRQ [F]
No
USB UHCI Controller #2, Note (3)
22
PIRQ [G]
No
USB UHCI Controller #3, Note (3)
23
PIRQ [H]
No
USB UHCI Controller #4, Note (3)
Note:
(1) If the ―Used For‖ device is disabled in setup, the corresponding interrupt is available for other devices.
(2) Not available if ACPI is used
(3) ACPI OS decides on particular IRQ usage