B.4 interrupt request (irq) lines, Irq lines pic mode, Interrupt request (irq) lines – ADLINK NuPRO-A331 User Manual
Page 93: Table b-4: irq lines pic mode
System Resources
79
NuPRO-A331
B.4 Interrupt Request (IRQ) Lines
IRQ Lines PIC Mode
Table B-4: IRQ Lines PIC Mode
Notes
(1) These IRQs can be used for PCI devices when onboard device is dis-
abled. If IRQ is from ISA, user must reserve IRQ for ISA in BIOS setup
menu.
(2) BIOS does not open IRQ 9 setting for ISA bus
.
IRQ#
Typical Interrupt
Resource
Connected to Pin
Available
0
Counter 0
N/A
No
1
Keyboard controller
N/A
No
2
Cascade interrupt from
slave PIC
N/A
No
3
Serial Port 5 (COM5)
IRQ3 via SERIRQ,
IRQ3 at ISA bus
Note (1)
4
Serial Port 1-4
(COM1/2/3/4)
IRQ4 via SERIRQ,
IRQ4 at ISA bus
Note (1)
5
Serial Port 6 (COM6)
IRQ5 via SERIRQ,
IRQ5 at ISA bus
Note (1)
6
PCI / ISA
N/A
No
7
Parallel port
IRQ7 via SERIRQ,
IRQ7 at ISA bus
Note (1)
8
Real-time clock
N/A
No
9
SCI/PCI
IRQ9 via SERIRQ,
IRQ9 at ISA bus
Note (1), (2)
10
PCI/ISA
N/A
Note (1)
11
PCI / ISA
N/A
Note (1)
12
PS/2 Mouse / PCI / ISA
IRQ12 via SERIRQ,
IRQ12 at ISA bus
Note (1)
13
Math Processor
N/A
No
14
Primary IDE controller /
PCI / ISA
IRQ14 via SERIRQ,
IRQ14 at ISA bus
No
15
Primary IDE controller /
PCI / ISA
IRQ15 via SERIRQ,
IRQ15 at ISA bus
No