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DIMM-PC/MD Product Manual
8. TROUBLESHOOTING
Before asking for support, please observe following hints if the modem doesn't behave correctly:
1. Check the appearance of the specified COM-Port in the setup summery screen.
2. Check the selecteted I/O address against conflicts with other devices (e.g. disable the
onboard COM1/ttyS0 if you selected address 3F8h).
3. Check the selected IRQ carefully. This might be a tricky task because a misconfigured IRQ
isn't always obvius:
a.) Be aware, that some DIMM-PCs don't support every selectable IRQ
b.) If you're using the modem in a PCI environment (e.g together with the Microserver),
ensure that the selected IRQ is mapped to the ISA bus (BIOS setup, IRQ ressources)
c.) Although the IRQ is misconfigured, the device appears in the setup setup screen correctly
d.) Sharable IRQs are not supported
4. Try to get as much information about the malfunction as possible before asking for support:
-
is the modem visible in the setup summary screen
-
does the settings of your terminal programm comply with the selected settings (e.g.
TELIX don't support IRQs > 9)
-
does the modem respond to an AT command (e.g "AT Z"). If not, this might hint to a
misconfigured IRQ.
-
is the malfunction maybe caused due to a wrong initialization (e.g. don't wonder if your
modem doesn't respond to incomming calls unless you specified a correct value in the S0
register).
-
when asking for help, please have the exact condition when the malfunction occured:
- a.) hardware setup: components, I/O and IRQ configuration
- b.) software setup:
BIOS version of the CPU Board
BIOS settings (especially concerning the COM ports and IRQ ressources)
Operation System (e.g. DOS, Windows9x, Linux, etc.)
Application Software (e.g. Telix, Hyper Terminal, etc.)
9. REVISION HISTORY
File-name
last
alteration
DPC_M100.DOC 13.12.02
DMD1M110.DOC 11.02.03
Kontron® Embedded Modules GmbH
author alteration to previous version
VK
Manual created
SML
completely reworked
25
Troubleshooting
Revision 1.0
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