User`s guide

Chapter 1 Installing TouchWare for Windows NT 29
Defining the Communication Settings
During the software installation, the Setup program displays the
Hardware Controls dialog box.
The touchscreen is a serial input device. When you install the
touchscreen and touchscreen controller, you attach them to a serial
communication port (COM port). The touchscreen driver
communicates with the touchscreen controller (and the touchscreen)
via this COM port. Signals from the touchscreen are sent to the
touchscreen controller, which in turn sends signals to the touchscreen
driver through the COM port.
The options in the Hardware Controls dialog box control the hardware
settings of the COM port through which the touchscreen driver
communicates with the touchscreen controller. You must set these
values to match those used by the touchscreen controller in order for
the touchscreen to work.
Your touchscreen unit can work in any COM port configuration. In
most cases, the touchscreen and touchscreen controller are connected
to a standard COM1–COM4 port. In these cases, you only need to
specify the appropriate port in the Hardware Controls dialog box. The
Setup program automatically assigns the base address and interrupt
request (IRQ) channel.