ADLINK Technology M-322 - Interrupt Request (IRQ) Lines

72 System Resources
B.5 Interrupt Request (IRQ) Lines
IRQ Lines PIC Mode
Table B-5: IRQ Lines PIC Mode
IRQ#
Typical Interrupt
Resource
Connected to Pin
0 System timer
Internal Timer / Counter 0 output /
HPET #0
3
Communications Port
(COM2)
IRQ3 via SERIRQ, PIRQ#
4
Communications Port
(COM1)
IRQ4 via SERIRQ, PIRQ#
6 Floppy Disk IRQ6 via SERIRQ, PIRQ#
8
System CMOS/real time
clock
Internal RTC / HPET #1
9
Microsoft ACPI-Compliant
System
IRQ9 via SERIRQ, SCI, TCO, or
PIRQ#
10
Communications Port
(COM3)
IRQ10 via SERIRQ, SCI, TCO, or
PIRQ#
11
Communications Port
(COM4)
IRQ11 via SERIRQ, SCI, TCO, or
PIRQ#, or HPET#2
13 Numeric data processor
State Machine output based on
processor FERR#assertion. May
optionally be used for SCI or TCO
interrupt if FERR# not needed.
14 Primary IDE Channel
SATA Primary (legacy mode), or via
SERIRQ or PIRQ#
15 Secondary IDE Channel
SATA Secondary (legacy mode) or via
SERIRQ or PIRQ#