2 in apic mode, 2 memory area, In apic mode – Kontron COMe-mTT10 User Manual
Page 43: Memory area, Come-mtt10 / system resources
COMe-mTT10 / System Resources
5.1.2
In APIC mode
IRQ #
Used For
Available
Comment
0
Timer0
No
-
1
Keyboard
No
-
2
Cascade
No
-
3
External SIO - COM2
Yes (No)
Note (1)
4
External SIO - COM1
Yes (No)
Note (1)
5
PCI
for PCI
Dynamic (BIOS default)
6
PCI
for PCI
Dynamic (BIOS default)
7
External SIO - LPT1
Yes (No)
Note (1)
8
RTC
No
-
9
ACPI
No
Note (2)
10
PCI
for PCI
Dynamic (BIOS default)
11
PCI
for PCI
Dynamic (BIOS default)
12
PS/2 Mouse
Yes (No)
Note (1)
13
FPU
No
-
14
PCI
for PCI
Dynamic (BIOS default)
15
PCI
for PCI
Dynamic (BIOS default)
16
PIRQ[A]
No
PCI IRQ line 1 + US15W graphics + USB UHCI Controller #1; Note(3)
17
PIRQ[B]
No
PCI IRQ line 2 + LAN Controller + USB UHCI Controller #2; Note(3)
18
PIRQ[C]
No
PCI IRQ line 3 + USB UHCI Controller #3; Note(3)
19
PIRQ[D]
No
PCI IRQ line 4 + USB UHCI Controller #4; Note(3)
20
PIRQ[E]
No
Note(3)
21
PIRQ[F]
No
Note(3)
22
PIRQ[G]
No
Note(3)
23
PIRQ[H]
No
Note(3)
(1) If the “Used For” device is disabled in setup, the corresponding interrupt is available
for other device.
(2) Not available if ACPI is used
(3) ACPI OS decides on particular IRQ usage
5.2
Memory Area
The first 640 kB of DRAM are used as main memory. Using DOS, you can address 1 MB of memory directly. Memory area
above 1 MB (high memory, extended memory) is accessed under DOS via special drivers such as HIMEM.SYS and
EMM386.EXE, which are part of the operating system. Please refer to the operating system documentation or special
textbooks for infor- mation about HIMEM.SYS and EMM386.EXE. Other operating systems (Linux or Windows versions)
allow you to address the full memory area directly.
Upper Memory
Used for
Available
Comment
A0000h – BFFFFh
VGA Memory
No
Mainly used by graphic controller
C0000h – CFFFFh
VGA BIOS
No
Used by onboard VGA ROM
D0000h – DFFFFh
-
Yes
Free for shadow RAM in standard
configurations.
E0000h – FFFFFh
System BIOS
No
Fixed
E0000000h – F0000000h
PCIe Config Space
No
Fixed
FEC00000h-FEC00040h
IOxAPIC
No
Fixed
FED00000h FED003FFh
HPET
No
Fixed
FED04000 FED4BFFF
TPM
No
Fixed
FFC00000h - FFFFFFFFh
BIOS Flash
No
Fixed
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