Memory area, I/o address map, Peripheeral component interconnect (pci) devices – Kontron COMe-bCD2 User Manual
Page 46: Inter ic (i, C) bus, 4 i/o address map, 5 peripheeral component interconnect (pci) devices, 6 inter ic (i

9 System Ressources
Kontron User's Guide ETXexpress® CD
46
9.3
Memory Area
Upper Memory
Used for
Available
Comment
C0000h – CFFFFh
VGA BIOS
No
D0000h – DDFFFh
Yes
shadow RAM (ISA bus restriction)
DE000h – DFFFFh
USB registers
No
E0000h – FFFFFh
System BIOS
No
9.4
I/O Address Map
The I/O-port addresses of the COMe-bCD2 are functionally identical with a standard PC/AT.
The following I/O ports are additionally used:
I/O Address
Used for
Available
Comment
2e-2fh
Winbond external
I/O controller
No
Available if external I/O controller not used.
4e-4fh
TPM
No
Available if TPM not populated.
2F8-2FFh
COM1
No
Available if device is disabled in setup
3F8-3FFh
COM2
No
Available if device is disabled in setup
1000h >
PCI
No
I/O ports 1000h and above might be allocated by PCI devices or
onboard hardware.
9.5
Peripheeral Component Interconnect (PCI) Devices
PCI Device
Busmaster
PCI Interrupt
Comment
Audio, USB
and Ethernet
See IRQ
resource tables
above
Integrated in the Intel chipset. No REQx/GNTx
pair needed.
Note:
You can use REQ0/GNT0, REQ1/GNT1, REQ2/GNT2, and REQ3/GNT3 pairs for external PCI devices.
9.6
Inter IC (I
2
C) Bus
I2C Address
Used For
Available
Comment
JIDA-Bus-Nr.
A0h
JIDA-EEPROM
No
EEPROM for CMOS data.
0
A2h
JIDA-EEPROM
No
0
B0h
WD-PIC
No
Reserved for internal use.
0