User`s guide

Installing the SLTA-10 MIP Mode Driver for DOS
The DOS
driver is
supplied on
the &PPY
diskette
included with
the Con-
nectivity
Starter Kit.
The latest
version of this
driver may be
obtained from
the Echelon
web site.
The SLTA-10 MIP mode network driver for DOS is installed by adding a DEVICE
command to the DOS CONFIG. SYS file. Edit the CONFIG. SYS file to include the
line:
DEVICE=C:\LONWORKS\BIN\LDVSLTA.SYS [options]
Substitute your drive and directory name if other than C : \LONWORKS\BIN.
Reboot the PC after adding this line to load the driver. For example, the
following command would be used with a locally attached SLTA-10 Adapter in
MIP mode installed on COM2 as device LONl running at 115,200 bps with
autobaud enabled:
DEVICE=C:\LONWORKS\BIN\LDVSLTA.SYS /P2 /Dl /B115200
Warning! The IA option must be present in the CONFIG. SYS entry if the SLTA-10
Adapter AutoBaud Switch5lAB is in the Enabled, UP position, or the SLTA-10
Adapter will not function correctly.
The IA option also may be left in the
CONFIG. SYS entry if the SLTA-10 Adapter Autobaud switch is in the disabled
(default), DOWNposition.
The available options for the SLTA-10 MIP mode network driver for DOS are
described in the following sections.
Buffer Options
/Onn
Sets the number of output (downlink) buffers within the driver to
an>. The buffer sizes within the driver are pre-set to accommodate
255 byte packets. The SLTA-10 Adapter in MIP mode has application
output buffers that may be increased to as large as 255 bytes. There
must be at least 2 buffers and the maximum allowed number for am>
is limited by the size of the buffer (258) times the total number of
input and output buffers within the driver. The entire buffer space
plus the driver code itself cannot exceed 64Kbytes.
The size of the
driver code itself is 9Kbytes. The number of output buffers required
is determined by the characteristics of the host application.
If the
host application always waits for an outgoing message completion
before sending another message, then only two buffers are required.
If the host application is set up to overlap transactions, more buffers
may be required. In this case greater parallelism may be achieved at
the expense of host application code complexity.
/Inn
Sets the number of input (uplink) buffers within the driver to an>.
The buffer sizes within the driver are pre-set to accommodate 255
byte packets. The SLTA-10 Adapter has application output buffers
may also be increased to as large as 255 bytes. There must be at least
2 buffers and the maximum allowed number for cnnr is limited by
the size of the buffer (258) times the total number of input and output
buffers within the driver. The entire buffer space plus the driver code
itself cannot exceed 64Kbytes. The number of input buffers required
8-2
Using the DOS Driver with SLTA-10 MIP Mode