User guide

5-17
Source Window
Capture Line Data
The Capture Line Data command is used to capture and display line
execution data in the Interactive mode. To capture line execution data,
left click on the Display menu and then left click on the toggle box to
enable Capture Line Data.
By disabling capture of line data, you gain significantly improved
performance when using line breakpoints in interactive Verilog-XL
simulations. The default for Capture Line Data is on.
Note:
When you set breakpoints from the Source Window, indications
of which lines are breakable (green dots) may change. This is due
to differences in VirSim's algorithm for determining breakable lines
using the line trace method versus the simulator's ability to break
at a given line (using the $db_breakatline command).
Note:
When using the All Group in Interactive Mode, the Capture Line
Data selection on the Display menu is insensitive as line data is
not captured in this optional mode.
Debug Behavior by Analyzing Execution Counts
To display line execution counts, left click on Display in the menu bar
and left click Show Coverage. This feature can provide valuable
information when debugging. For example, it can tell you if the
appropriate lines were executed or if inappropriate lines were
executed.