2 in apic mode, 2 direct memory access (dma) channels, 3 memory area – Kontron COMe-cDC2 User Manual
Page 47: In apic mode, Direct memory access (dma) channels, Memory area, Come-cdc2 / system ressources
COMe-cDC2 / System Ressources
5.1.2
In APIC mode
IRQ#
Used For
Available
Comment
0
Timer 0
No
-
1
Keyboard
No
-
2
Slave 8259
No
-
3
COM2
Yes
Note (1)
4
COM1
Yes
Note (1)
5
PCI/LPT2
Yes
-
6
Floppy Drive Controller
Yes
Note (1)
7
LPT1
Yes
Note (1)
8
RTC
No
-
9
SCI
No
Note (2)
10
COM3
No
Note (1)
11
COM4
No
Note (1)
12
PS/2 Mouse
Yes
Note (1)
13
FPU
No
-
14
IDE0
No
Note (1)
15
IDE1
No
Note (1)
16
PIRQ[A]
For PCI
PCI IRQ line 1 + Graphics controller + HD Audio
Controller + secondary IDE
17
PIRQ[B]
For PCI
PCI IRQ line 2 + AC'97 Audio controller
18
PIRQ[C]
For PCI
PCI IRQ line 3 + USB UHCI controller #3 + SATA
(native mode)
19
PIRQ[D]
For PCI
PCI IRQ line 4 + USB UHCI controller #2 + IDE
(native mode)
20
PIRQ[E]
No
Lan Controller
21
PIRQ[F]
No
-
22
PIRQ[G]
No
-
23
PIRQ[H]
No
USB EHCI controller, USB UCHI controller #1
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.
5.2
Direct Memory Access (DMA) Channels
DMA#
Used For
Available
Comment
0
No
-
1
No
-
2
FDC
No
If the “used-for” device is disabled in
setup, the corresponding DMA channel is
avaialble for other devices
3
LPT
No
Unavailable if LPT is used in ECP mode
4
Cascade
No
-
5
No
-
6
No
-
7
No
-
5.3
Memory Area
Upper Memory
Used For
Available
Comment
C0000h-CFFFFh
VGA BIOS
No
D0000h-DFFFFh
Yes
LPC Bus or Shadow RAM
E0000h-EFFFFh
System BIOS
No
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