CTI Products PCLTA PCI Interface User Manual

Page 31

PCLTA Installation Manual

Troubleshooting

CTI Products, Inc.

68-11199-135

resource “conflict” has occurred. This is a consequence of the PCLTA adapter’s
ability to be assigned any of the system’s 16 IRQs.

IRQ usage in the system can be determined by opening the System icon in the
Control Panel window. The tab labeled “Device Manager” allows viewing of
devices by type or connection.

The PCLTA LonWorks Network Interface device icon is found under the
“LonWorks Interface” device type. If there is a problem with the adapter, there
will be a red circle with an exclamation point next to its icon.

IRQ resource problems may generally be resolved by disabling another device in
the system. More information can be found in the Hardware Conflict
troubleshooting portion of the Windows operating system on-line Help file.

Access the hardware conflict troubleshooter through the procedure outlined
below:

Open the Windows operating system on-line help by clicking the
Windows Start button and selecting “Help”.

In the Help Topics window, choose the Contents tab, or from another Help
window, choose the Contents button.

Double click the Troubleshooting topic, and then select the help topic, “If
You Have A Hardware Conflict.”

Extensive troubleshooting documentation can be found in the Microsoft Windows
95/98 Resource Kit Help File. This help file is part of the Windows 95/98
Resource Kit, which is available from Microsoft.

If a DOS real-mode driver is in use for a specific device that is installed in the PC,
Windows 95/98 may not know about that device’s resource requirements. Unlike
Windows driver conflicts, this problem is difficult to diagnose.

There are rare I/O conflict situations of which the Device Manager may be
unaware. Such a conflict may occur when an I/O resource is not properly
specified for a device, and a new driver overlays onto the true I/O space of that
device. In the event of such a conflict, it may become necessary to manually
reserve I/O or IRQ resources using the Device Manager. This process is described
in the Window 95/98 on-line Help.

Once these resources have been reserved, the Device Manager will recognize and
attempt to resolve any resource conflicts between the DOS driver and any
Windows drivers. If a conflict still occurs, it will be “visible”, and may be
resolved as described earlier in this section.