17-2
VCD+ (vpd) File Generation
For Verilog simulators other than VCS, the correct VCD+ interface
must be linked to the simulator in order to produce VCD+ files. This
linkage is done as part of VirSim installation and new simulator
installation. Refer to the VirSim Installation Notes (separate from this
manual).
The Scirocco simulator has a built in interface to create VCD+ files.
Refer to the Scirocco Reference Manual for details.
Advantages of VCD+
VCD+ offers significant advantages over the standard VCD ASCII
format.
• VCD+ provides a compressed binary format that dramatically
reduces file size as compared to VCD and other proprietary file
formats.
• The VCD+ compressed binary format dramatically reduces signal
load time.
• VCD+ allows data collection for signals or scopes to be turned on
and off during a simulation run, thus, dramatically improving
simulation run time and file size.
• VCD+ can also save Verilog source-statement execution data.
This allows instant replay of your Verilog source execution in the
VirSim Source Window.
Comments to this Manuals