14
MODULAR PARALLEL ADAPTERS AND MODULAR MEDIA UNITS
• CPIM.EXE—Hardware driver
• STRNDIS.DOS—NDIS driver for DOS
• PROTOCOL.INI—Sample protocol initialization file
• STRDOS.NIF—Configuration file used by Microsoft LAN Manager’s setup
program for configuring a DOS workstation
4.2 Configuration (Optional)
CPIM and CPIL are self-configuring drivers that automatically detect the
correct LPT port, interrupt line, and unidirectional/bidirectional mode
to be used. If your PC has an Enhanced Parallel Port (EPP), or if you have
a special configuration, you may need to override this automatic selection
by using one or more of CPI’s command line parameters. Otherwise,
you should skip this section.
Available parameters are:
• E (EPP)—The Adapter supports the Enhanced Parallel Port (EPP). Most
PCs based on the Intel
®
80386SL or 80486SL chipsets may be configured
to work in the EPP mode. This mode improves the performance of the
Adapter and therefore is recommended if your computer supports it.
NOTE
Be sure that your PC has an Enhanced Parallel Port (EPP) before
selecting the “E” command line parameter.
• U (Unload)—The parameter “U” unloads the CPI from memory. Usually
it is used when unloading the whole network driver.
• P (Polling)—A PC may use either IRQ-7 or IRQ-5 for handling the parallel
port communications. If you need to work without interrupts (usually
only with test evaluations), use the POLLING command line parameter.
This will force the driver to operate in a polled mode without using
hardware interrupts.
• F (Force UNIDIR)—Whenever the CPI driver is loaded into memory,
it tests the parallel port to determine whether it can be operated in the
faster bidirectional mode. The Adapter is then configured according
to the test results. However, when using a long extension cable, the
bidirectional mode may not operate reliably, even if the test passes.
In this case, you should force the unidirectional mode by using the
“F” command line parameter.
