Etx®-cd / system resources in apic mode – Kontron ETX-CD User Manual
Page 35
ETX®-CD / System Resources
In APIC mode:
IRQ #
Used For
Available
Available for PCI
Comment
0
Timer0
No
No
1
Keyboard
No
No
2
Slave 8259
No
No
3
COM2
No
Yes
Note (1)
4
COM1
No
Yes
Note (1)
5
PCI/LPT2
Yes
Yes
Note (2)
6
Floppy Drive Controller
No
Yes
Note (1)
7
LPT1
No
Yes
Note (1)
8
RTC
No
No
9
SCI
No
No
System Control Interrupt (3)
10
COM3
Yes
Yes
Note (2)
11
COM4
Yes
Yes
Note (2)
12
PS/2 Mouse
No
Yes
Note (1)
13
FPU
No
No
14
IDE0
No
No
15
SATA
No
No
Note (3)
16
PIRQ[A]
For PCI
PCI IRQ line 1 + USB UHCI
controller #0 + Graphics
controller
17
PIRQ[B]
For PCI
PCI IRQ line 2 + AC97 Audio
controller + USB UHCI controller
#1
18
PIRQ[C]
For PCI
PCI IRQ line 3 + USB UHCI
controller #2 + Native IDE
19
PIRQ[D]
For PCI
PCI IRQ line 4 + USB UHCI
controller #3
20
PIRQ[E]
No
Lan Controller
21
PIRQ[F]
No
22
PIRQ[G]
No
23
PIRQ[H]
No
USB EHCI controller
1 If the “Used For” device is disabled in setup, the corresponding interrupt is available for
other devices.
2 Unavailable if baseboard is equipped with an I/O controller SMC FDC37C669, and the
device is enabled in setup.
3 Unavailable in SATA legacy mode. It cannot be used for PCI, but for ISA bus, when SATA is
in enhanced mode.
The ETX®-CD is always booting in PIC mode. This might lead to the fact, that there are no
interrupts for PCI devices available when all onboard and SuperI/O interfaces are enabled.
Then the system stops without booting. The only solution is to deactivate interfaces.
35