Kontron COMe-cXLi2 - Manual (Page 61)

Kontron COMe-cXLi2 User’s Guide
www.kontron.com
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7.2 Memory Area
The first 640 KBytes of DRAM are used as main memory. With 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 information 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
7.3 I/O Address Map
The I/O-port addresses of the COMe-cXLi2 COM are functionally identical to
those of a standard PC/AT system. All addresses not mentioned in Table 1
should be available. We recommend that you do not use I/O addresses below
0100h for additional hardware for compatibility reasons, even if available.
Table 18: I/O Address Assignments
I/O Address Used for Availabl
e
Comment
0000 - 001F System Resources No Fixed
0020 - 003F Interrupt
Controller 1
No Fixed
002E - 002F WB 83627 No Fixed if
WB83627HG is in
system
0040 - 005F Timer, Counter No Fixed
004E - 004F TPM No Fixed if TPM is
in system
0060 - 006F Keyboard
Controller
No Fixed
0070 - 007F RTC and CMOS
Registers
No Fixed
0080 BIOS Postcode No Fixed