Comtrol NS-link Windows NT - Manual (Page 78)

78 Comtrol Tools
Using Freeport
Using Freeport
FreePort is an application utility that provides a simple mechanism to
communicate to the NS-Link device driver that it should request the physical
device to close the physical ports which are associated with the specified logical
ports.
See the Freeport.cpp file (bundled with the driver) for a simple example on how
other applications could implement this capability themselves. The Freeport.cpp
file can be found in the C:\WINNT\System32\RpshSi subdirectory after driver
installation.