3Com EtherLink III ISA 3C509B-COMBO, User Manual

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5-2 C
HAPTER
5: W
INDOWS
95
AND
W
INDOWS
NT T
ROUBLESHOOTING
Changing the I/O Base Address or the Interrupt Request Level
If you discover that you have a resource conflict, you can change
the I/O base address or the interrupt request level (IRQ). If you are
adding new hardware to your system, you may need to change a
resource assignment to avoid a conflict. The following procedures
describe how to change resource allocations for your Windows 95
or Windows NT PC.
Windows 95
Follow these steps to change the IRQ level assignment or the
I/O base address in a Windows 95 PC:
1 Double-click the My Computer icon, double-click the Control
Panel icon, and then double-click the System icon.
The System Properties window is displayed.
2 Select the Device Manager tab, double-click Network
adapters , and then double-click 3Com EtherLink III ISA
Adapter .
3 Select the Resources tab.
4 Depending on the type of conflict that you have, select
either
Input/Output Range or Interrupt Request .
5 Select the resource that you want to change (IRQ or
Input/Output Range) and select
Change Settings . (If these
options appear dimmed, clear the Use automatic settings
check box.)
6 Scroll to a value that you know is available, and then
click
OK .
You recorded available IRQ values during the Windows 95
preinstallation procedure. See
“Performing the Preinstallation
Procedure ” in Chapter 2 .
Before you reboot Windows 95, make sure that the value that you
assign to a resource matches the value for the same resource in
the NIC Configuration Settings screen (similar to that shown in
Figure 3-2 ) in the 3Com NIC Diagnostics program.
7 Close all open windows and restart the PC.
The hardware conflict should be resolved. If not, consult your
system administrator.