Xilinx ISE Simulator (ISim) In-Depth Tutorial

Chapter 4: Using the ISim Graphical User Interface
X-Ref Target - Figure 4-16
Adding Groups
Figure 4-16: Wave Window
In the next section, you will be analyzing the simulation of the tutorial design in more
detail using features from the Wave window, such as dividers, groups, cursors and
markers.
In the next steps, you will be adding signals from other design units in order to better
analyze the functionality of this design. However, soon after you add additional signals to
the wave window, the size of the wave window will not be large enough to display all
signals in the same view. Reviewing all signals would require the use of the vertical scroll
bar in the Wave window repeatedly, making the review process rather tedious.
We can remedy this situation by collecting signals into a group. With a group, you can
collectively show or hide signals of similar purpose.
To group signals in the wave configuration:
1. Click and hold the Ctrl key, and select signals of similar purpose in the Wave window.
2. Right-click any selected signal and select New Group.
3. Type a name for the group, such as DRP Test Signals.
4. A collapsed group will be created in the Wave window. To expand the group, click
once to the left of the group name.
Use the instructions above to make groups for the following signals:
1. All signals in the drp_demo_tb design unit that start with “drp_”. Name the group
“DRP Test Signals”.
2. All signals in the drp_demo_tb design unit that start with “dcm_”. Name the group
“DCM Test Signals”.
3. Expand all the created groups. Your wave window should be similar to the one shown
in Figure 4-17.
40 www.xilinx.com ISE ISim In-Depth Tutorial
UG682 (v 12.3) September 21, 2010