NEC Express5800 Series User Manual page 156

Chapter 4 Appendix
Interrupt Request
Interrupt requests are assigned as shown below. Find an appropriate one to install a PCI card.
"PCI1A: INTA" denotes INTA of PCI card installed in PCI slot 1A.
If the operating system and device driver support MSI/MSI-X (Message Signaled Interrupts), assignments
differ from those shown in the table below.
IRQ/PIRQ
0(00h)
1(01h)
2(02h)
3(03h)
4(04h)
5(05h)
6(06h)
7(07h)
8(08h)
9(09h)
10(0Ah)
11(0Bh)
12(0Ch)
13(0Dh)
14(0Eh)
15(0Fh)
16(10h)
17(11h)
18(12h)
19(13h)
20(14h)
21(15h)
22(16h)
23(17h)
( ): Hexadecimal notation
156
Peripherals (Controller)
System timer
–
–
COM2 serial port
COM1 serial port
–
–
–
Realtime clock (RTC)
Microsoft ACPI-Compliant System
(SCI)
–
Motherboard resources (BMC)
–
Numeric data processor
–
–
Onboard LAN1/3
PCI1C: INTA
Onboard LAN2/4
PCI1C: INTB
Onboard VGA/SMBus
PCI1C: INTC
Onboard SATA1/2
PCI1C: INTD
–
–
EHCI#2 (USB)
EHCI#1 (USB)
Express5800/R120e-1E User's Guide
IRQ/PIQR Peripherals (Controller)
24(18h) –
25(19h) –
26(1Ah) PCI1A: INTA
27(1Bh) –
28(1Ch) PCI1A: INTB
29(1Dh) PCI1A: INTC
30(1Eh) PCI1A: INTD
31(1Fh) Primary IOAT
32(20h) –
–
33(21h)
34(22h) –
35(23h) –
–
36(24h)
37(25h) –
38(26h) –
39(27h) Primary IOAT
40(28h) PCI1B: INTA
–
41(29h)
–
42(2Ah)
–
43(2Bh)
44(2Ch) PCI1B: INTB
45(2Dh) PCI1B: INTC
46(2Eh) PCI1B: INTD
47(2Fh) –
2. PCI Configuration