System Ressources; Interrupt Request (Irq) Lines; In 8259 Pic Mode - Kontron COMe-cDC2 User Manual

5 System Ressources

5.1

Interrupt Request (IRQ) Lines

Please be aware that an ACPI OS decides itself on resource usage. The tables below show only an example distribution.
5.1.1

In 8259 PIC Mode

IRQ#
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1 If the "Used For" device is disabled in setup, the corresponding interrupt is available for
other devices.
2 Unavailable in Advanced Configuration and Power Interface (ACPI) mode. Used as System
Control Interrupt (SCI) in ACPI mode. Currently not free in Non-ACPI mode.
46
Used For
Timer 0
Keyboard
Slave 8259
COM2
COM1
Free
Floppy Drive Controller
LPT1
RTC
SCI
Free
Free
PS/2 Mouse
FPU
IDE0
IDE1
COMe-cDC2 / System Ressources
Available
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
No
No
Comment
-
-
-
Note(1)
Note(1)
-
Note(1)
Note(1)
-
Note(2)
-
-
Note(1)
-
Note(1)
Note(1)