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RealPort Ethernet 10/100 User’s Guide
Troubleshooting
Network Installation
Windows NT 4.0 does not support plug and play resource assign-
ment for the Xircom adapter. Default settings are specified by the
installation files. If these settings do not work on your system, use
the following general guidelines to assist you. Contact Xircom
Customer Support if you are unable to resolve the issues.
Resource Conflict Symptoms
• After network installation the computer locks up on reboot.
• A Service Control message reports that a service or driver
did not start.
• The Xircom card initializes properly, but another hardware
device functions sporadically, the computer locks up
randomly or exhibits very slow network performance.
The most likely cause of these symptoms is a resource conflict
between the Xircom card and another hardware device. Interrupt
conflicts are the most common. Open the Event Viewer to review
errors encountered during the boot process (Start, Programs,
Administrative Tools, Event Viewer). Double-click the bottom
error message to start reviewing. Identification of the device or
service that failed to start may help in pinpointing where the
conflict lies.
Error messages reporting that the driver failed to start
because a device attached to the system is not functioning
may not involve the Xircom card. For example, an error is
sometimes displayed if a device not currently connected to
the computer is still listed as an installed component.
Two items frequently in conflict with the Xircom card are:
Sound cards Often use IRQ 5 and I/O Port addresses 220h
and 330h
PCMCIA.SYS Installs at memory segment D000-D3FF but may
not appear under NT Diagnostics
