4 interrupt request (irq) lines, Interrupt request (irq) lines, Pic mode – ADLINK Express-CB User Manual
Page 33
Page 33
Express-IA533 User’s Manual
Page 33
Express-IA533 User’s Manual
Express-CB User’s Manual
Page 33
Page 33
Express-CB User’s Manual
7.4 Interrupt Request (IRQ) Lines
PIC Mode
IRQ#
Typical Interrupt Resource
Connected
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 2 (COM2)
IRQ3 via SERIRQ, IRQ3 at ISA bus
Note (1)
4
Serial Port 1 (COM1) / PCI / ISA
IRQ4 via SERIRQ, IRQ4 at ISA bus
Note (1)
5
PCI / ISA
IRQ5 via SERIRQ, IRQ5 at ISA bus
Note (1)
6
Floppy Drive Controller
IRQ6 via SERIRQ
No
7
PCI / ISA
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
No
N/A
No
11
No
N/A
No
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
Note (1)
15
No
N/A
No
(1) These IRQs can be used for PCI devices when onboard device is disabled. If IRQ is from
ISA, user must reserve IRQ for ISA in BIOS setup menu.
(2) BIOS does not allow IRQ 9 setting for ISA bus.