KONTRON
speedMOPSlcdCE User’s Guide
51
Appendix A: System-Resource Allocation
23.2
Direct Memory Access (DMA) Channels
DMA #
Use
Available
Comment
0
Yes
1
Sound
No
Note (1), (2)
2
FDC
No
Note (1)
3
LPT
Yes
Note (2)
4
Cascade
No
5
Yes
6
Yes
7
Yes
Notes:
(1) If the „used for“-device is disabled in setup, the corresponding DMA
channel is available for other devices.
(2) Possible setting for LPT1 if configured for ECP mode.
23.3
Memory Map
The speedMOPSlcdCE processor modules can support up to 512MB of memory. The first 640KB of
SDRAM are used as main memory.
Using DOS, you can address 1MB of memory directly. Memory area above 1MB (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) allow you to address the full memory area directly.
Upper Memory
Use
Available
Comment
A0000h – BFFFFh
VGA Memory
No
Mainly used by graphic adapter cards. If a PCI
graphic card is in the system this memory area
is mapped to the PCI bus.
C0000h – CFFFFh
VGA BIOS,
RPL/PXE ROM
No
D0000h – DFFFFh
Yes
Free for ISA bus or shadow RAM in standard
configurations.
If JRC software is used, a 16K block is
shadowed for BIOS extension, starting with first
free area at D0000h, D4000h, D8000hor
DC000h. (BIOS extensions do not use the
whole shadow block.)
E0000h – F0000h
System BIOS,
USB legacy
support
No
Summary of Contents for speedMOPSlcdCE
Page 1: ...speedMOPSlcdCE User s Guide Document Revision 1 2...
Page 2: ......
Page 8: ...KONTRON Contents vi speedMOPSlcdCEUser s Guide...
Page 86: ...KONTRON Appendix C Block Diagram 78 speedMOPSlcdCEUser s Guide 25 APPENDIX C BLOCK DIAGRAM...
Page 88: ...KONTRON Appendix D Mechanical Dimensions 80 speedMOPSlcdCEUser s Guide 26 1 2 Side View...
Page 90: ...KONTRON Appendix E Connector Layout 82 speedMOPSlcdCEUser s Guide 27 2 Bottom Side...
