User`s guide

PCLTA-20 Adapter User’s Guide 2-3
during PCLTA-20 Configuration. See Chapter 3,
Configuring and Testing the
PCLTA-20 Adapter
.
7. When the 16-bit Application Support prompt appears, select “Yes” to enable the
use of 16-bit applications with the PCLTA-20 adapter. This causes the
installation program to add references to the DOS
CONFIG.SYS
file for the “stub”
device drivers named
PCCLON1
and
PCCLON2
. This allows existing 16-bit
applications to recognize these device names and use the PCLTA-20 adapter as a
network interface. If more than two PCLTA-20 adapters are installed in the PC,
additional stub drivers can be created manually. To do so, add the following lines
to the
CONFIG.SYS
file:
DEVICE=C:\LONWORKS\BIN\LDVSTUB.SYS /D:PCCLON3
DEVICE=C:\LONWORKS\BIN\LDVSTUB.SYS /D:PCCLON4
There is a limit of six (6) PCLTA-20 adapters in a single PC.
Once the driver is installed and active, existing 16-bit Windows applications can
access the PCLTA-20 adapter using the
ldv_open()
,
ldv_close()
,
ldv_read()
, and
ldv_write()
functions provided by the
WLDV.DLL
file.
The installation software installs a new
WLDV.DLL
file in
\WINDOWS\SYSTEM
,
replacing any pre-existing versions of the file. The updated
WLDV.DLL
is fully
backward-compatible with previous versions.
8. If the installation software discovers the
SYSTEM.INI
entry that loads the PCI-
bus driver,
ECHLMPA.386
, it will comment out the entry and display the message,
“SETUP has modified your
SYSTEM.INI
file by removing the following entry:
device=echlmpa.386.” It is not possible to use the ISA-bus protocol analyzer card
and the PCLTA-20 card on the same PC.
9. The installation software for the Windows 95/98 version will issue a prompt to
add a DOS virtual-mode device driver file named
LDVVDD.SYS
to the DOS
CONFIG.SYS
file to support DOS applications calling
LON1
. This will allow DOS
applications to be used in a Windows 95/98 DOS shell/window. For more
information see Virtual-Mode DOS Driver later in this chapter. The following
line is added to the
CONFIG.SYS
file:
DEVICE=C:\LONWORKS\BIN\LDVVDD.SYS /D1
10. Software installation is complete. At the prompt to restart the computer, remove
the PCLTA-20 installation diskette and shut down the computer. Next insert the
PCLTA-20 into a PCI slot and turn the computer back on.
Windows NT Software Installation Procedure
To install the PCLTA-20 software on a Windows NT PC, follow the instructions
below. The PCLTA-20 software cannot be installed from DOS or a DOS shell.