The I/O View window provides a graphical view of the I/O memory map of the device associated with the active project. This debug tool will display the actual register content when debugging, allowing verification of peripheral configurations. It can also be used to modify the content of a register without having to recompile.
Open the I/O View window by selecting Window>Debugging>IO View. In the Peripheral (upper) part of the window, click on “Analog-to-Digital Converter.” The registers associated with this peripheral will be shown in the Register (lower) part.
Since the ADC is used to convert potentiometer signals into digital signals for LED
display, some values will change if you turn the pot. Turn the pot and then click the
“Continue” icon 
.
You may also change register values directly by clicking on them.
For more information on this window, see the following sections: