User`s guide

2-10 Installing the PCLTA-20 Adapter
of 0x204-0x207. If this problem is suspected, manually move the PCLTA-20
adapter’s I/O range to a safer location to prevent I/O overlap.
Solving Conflicts under Windows NT
The device driver PNPLON.SYS works with the Windows NT operating system to
locate PCLTA-20 cards. The driver is completely Plug n’ Play, and because the
device is a PCI card, the system BIOS will determine a useable I/O port and IRQ
setting. There is no user-configurable resources setting from the Windows NT
operating system.
If more control is required over the choice of IRQs used for the PCLTA-20, there is an
optional system setting that can be used. The Preference button on the L
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Plug ‘n Play control panel brings up a self-explanatory dialog that allows the setting
of the preferred and alternative IRQ list.
The Preference button also allows a choice of the numeric base for the device naming
convention, i.e, the value of x in LONx. By default this will start at “LON1”. This
could create a conflict if another device driver is also trying to create a device named
“LON1” (such as a PCNSS/PCNSI driver). In this case choose another value.
If other values are chosen for the device naming convention then you may want to
assure that the DOS driver defined in your
CONFIG.NT
file reflects this setting. It is
this DOS driver in the
CONFIG.NT
file that defines the device name used by 16-bit
Windows applications running under NT, so such an application will refer to devices
named “LON1”, “LON2”, and so on.
The first place to go for information if problems arise should be the Event Log under
System Events.
Software Compatibility
The PCLTA-20 adapter software is designed to be compatible with L
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-based
software. However, the following issues may arise when using the PCLTA-20
adapter with some software.
Device Name Aliasing under Windows 95/98
The PCLTA-20 adapter should operate with most third party L
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-based
software. However, some 16-bit Windows applications which use the services of
Echelon’s WLDV dynamic link library are limited in the device names that can be
selected. For example, only the names “LON1” through “LON9” may be available,
preventing the use of a PCLTA-20 adapter. This problem can be corrected through
the use of device name aliasing. To create a device alias, follow these instructions: