Software • BIOS options
252
Automation PC 810 with GM45 CPU board user's manual V1.28
1.11.4 Interrupt assignments in APIC mode
A total of 23 IRQs are available in APIC (
A
dvanced
P
rogrammable
I
nterrupt
C
ontroller) mode. Enabling this option
is only effective if done before the Windows operating system is installed.
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 NMI NONE
System timer
●
Keyboard
●
IRQ cascade
●
COM1 (Serial port A)
○
●
○
○
○
○
○
○
COM2 (Serial port B)
●
○
○
○
○
○
○
○
ACPI
1)
●
Real-time clock
●
Coprocessor (FPU)
●
Primary IDE channel
2)
●
Secondary IDE channel
2)
●
COM3
(COM C)
○
○
○
○
○
○
○
○
●
COM4
(COM D)
○
○
○
○
○
○
○
○
●
COM5
(COM E)
○
○
○
○
○
○
○
○
●
B&R
CAN
○
○
○
○
○
○
○
○
○
●
PIRQ A
3)
●
PIRQ B
4)
●
PIRQ C
5)
●
PIRQ D
6)
●
PIRQ E
7)
●
PIRQ F
8)
●
PIRQ G
9)
●
PIRQ H
10)
●
Table 224: IRQ interrupt assignments in APIC mode
1)
A
dvanced
C
onfiguration and
P
ower
I
nterface.
2)
If the SATA configuration in BIOS is set to Enhanced mode for all SARA ports, IRQs 14 and 15 are enabled for the system and the SATA ports use other IRQs.
3)
PIRQ A: for PCIe; UHCI host controller 2, VGA controller, PCI express root port 0, PCI-EX to SATA bridge
4)
PIRQ B: for PCIe; HD audio, PCI express root port 1, onboard gigabit LAN controller
5)
PIRQ C: for PCIe; PCI express root port 2
6)
PIRQ D: for PCIe; UHCI host controller 1, serial ATA controller 0 + 1 in enhanced/native mode, PCI express root port 3
7)
PIRQ E: PCI bus INTD, UHCI host controller 3, EHCI host controller 1, SM bus controller
8)
PIRQ F: PCI Bus INTA
9)
PIRQ G: PCI Bus INTB
10)
PIRQ H: PCI Bus INTC, UHCI Host Controller 0, EHCI Host Controller 0
● ... Default setting
○ ... Optional setting
