The value mask allows you to specify individual bits to test when comparing values. Testing is performed on the following basis:

• a binary zero in the filter indicates that the bit is not tested

• a binary one in the filter indicates that the corresponding bit of the transfer is compared with the corresponding bit of the Data value.

When you select this option, RealView Debugger inserts $MASK$=0xFFFFFFFF into the textbox. Enter the value that you want to compare with, and edit the mask to the required value.