In Apic Mode; Direct Memory Access (Dma) Channels; Memory Area - Kontron COMe-cDC2 User Manual

5.1.2

In APIC mode

IRQ#
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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#
0
1
2
3
4
5
6
7
5.3

Memory Area

Upper Memory
C0000h-CFFFFh
D0000h-DFFFFh
E0000h-EFFFFh
47
Used For
Timer 0
Keyboard
Slave 8259
COM2
COM1
PCI/LPT2
Floppy Drive Controller
LPT1
RTC
SCI
COM3
COM4
PS/2 Mouse
FPU
IDE0
IDE1
PIRQ[A]
PIRQ[B]
PIRQ[C]
PIRQ[D]
PIRQ[E]
PIRQ[F]
PIRQ[G]
PIRQ[H]
Used For
FDC
LPT
Cascade
Used For
VGA BIOS
System BIOS
COMe-cDC2 / System Ressources
Available Comment
No -
No -
No -
Yes Note (1)
Yes Note (1)
Yes -
Yes Note (1)
Yes Note (1)
No -
No Note (2)
No Note (1)
No Note (1)
Yes Note (1)
No -
No Note (1)
No Note (1)
For PCI PCI IRQ line 1 + Graphics controller + HD Audio
Controller + secondary IDE
For PCI PCI IRQ line 2 + AC'97 Audio controller
For PCI PCI IRQ line 3 + USB UHCI controller #3 + SATA
(native mode)
For PCI PCI IRQ line 4 + USB UHCI controller #2 + IDE
(native mode)
No Lan Controller
No -
No -
No USB EHCI controller, USB UCHI controller #1
Available
No
No
No
No
No
No
No
No
Available
No
Yes
No
Comment
-
-
If the "used-for" device is disabled in
setup, the corresponding DMA channel is
avaialble for other devices
Unavailable if LPT is used in ECP mode
-
-
-
-
Comment
LPC Bus or Shadow RAM