Appendixes; Irq, I/O Address, And Memory Segment Conflicts - Eicon Networks Eiconcard C20 Quick Start Manual

Eiconcard s-series/c-series/p-series wan adapter

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APPENDIX A

Note: The information in this appendix applies only to ISA-bus Eiconcards.

If you are installing multiple Eiconcards in the same ISA-bus server, make sure that each

Eiconcard is set to a different IRQ (Interrupt Request Level), I/O Address, and Memory

Segment. The same holds true for other cards in your system; all cards must be set to a

different IRQ, I/O address, and Memory Segment.

Warning: Special consideration should be taken when you install an Eiconcard in an

AT-class PC (ISA bus). If the PC contains 16-bit peripheral cards that use memory

windows (such as LAN or video adapters), the Eiconcard cannot use the same 128k

memory group.

The 128k memory group addresses are as follows:

• A000-BFFF

• C000-DFFF

• E000-FFFF

For example, if you have a 16-bit LAN card which uses a memory window at C800-CFFF,

you cannot set your Eiconcard, or any other 8-bit card that uses a memory window, to any

address in the range C000 to DFFF.

If difficulty arises in managing the memory segments, most peripheral 16-bit cards can

be configured as 8-bit cards. This can usually be done through jumper selections on the

card or by placing the 16-bit card in an 8-bit slot. Check the manufacturer's documentation

for recommendations.

Important: When adding new software, make sure that the Eicon Configuration

Program is not running. If this program is running, it will behave abnormally when you try

to configure the new card. For the same reason, the Eicon Configuration Program must

also be closed when you issue the NET STOP ECNB command.

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