Xilinx ISE Simulator (ISim) In-Depth Tutorial

Chapter 4: Using the ISim Graphical User Interface
X-Ref Target - Figure 4-21
X-Ref Target - Figure 4-22
Figure 4-21: Add to Wave Window
Click and hold the Ctrl key, and select the input/output ports of the
Inst_drp_dcm design unit. Then, drag and drop the signals to the Wave
window.
Type wave add Tcl command at the ISim Tcl prompt. For example:
wave add /drp_demo_tb/uut/inst_drp_dcm
Note: By default, all types of simulation objects (variables, constants, etc.) are displayed in the
Objects panel. You can filter the type of simulation objects shown in this panel. Use the Objects
panel toolbar to filter by inputs, outputs, bi-directional, internal, constants and variables. Toggle
the desired object type by clicking on the corresponding button.
Figure 4-22: Inputs, Outputs, Bi-Directional, Internal, Constants and Variables
4. You can move the recently added signals if they do not appear directly under the DCM
divider.
a. Click and hold Ctrl+Shift, click once on the first added DCM signal (clk_in) and
the last added DCM signal (gnd_bit).
b. Once all signals are selected, move the signals under the DCM divider by holding
the mouse button and placing the mouse cursor right under the divider name.
5. Repeat the steps above for input/output ports of Inst_drp_statmach instantiated
design unit.
6. Additionally, you can also create groups for the signals recently added. Using the
instructions provided for adding groups, define groups “Inputs”, “Internal”, and
“Outputs” for each set of signals recently added.
Note: Use the object icon to the left of the signal name to determine the type of the simulation object
(Figure 4-23).
44 www.xilinx.com ISE ISim In-Depth Tutorial
UG682 (v 12.3) September 21, 2010