PictureTel III ISA manual System Properties window is displayed

5-2CHAPTER 5: WINDOWS 95 AND WINDOWS NT TROUBLESHOOTING

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:

1Double-click the My Computer icon, double-click the Control Panel icon, and then double-click the System icon.

The System Properties window is displayed.

2Select the Device Manager tab, double-click Network adapters, and then double-click 3Com EtherLink III ISA Adapter.

3Select the Resources tab.

4Depending on the type of conflict that you have, select either Input/Output Range or Interrupt Request.

5Select 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.)

6Scroll 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.

7Close all open windows and restart the PC.

The hardware conflict should be resolved. If not, consult your system administrator.