Encore SIM EDITOR SOFTWARE User's Guide Page 385

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17-1
VCD+ (vpd) File Generation
17
VCD+ (vpd) File Generation 1
VCD+ files, also referred to as vpd files, are binary files containing
simulation history data. They are created from $vcdplus system tasks
in verilog simulation and by default are named vcdplus.vpd. System
tasks include the vcdplus name in the tasks, for example, $vcdpluson,
$vcdplusoff, $vcdplusfilename, etc. These system tasks are entered
in Verilog code or at the Interactive Window command prompt. Refer
to
System Tasks and Functions. There are also simulator run time
options that control how VCD+ files are generated. Run time options
include +vpd in their names, for example, +vpdbufsize, +vpdignore,
etc. Refer to
Simulator Run-Time Options.
When you include the -I, -RI, or -PP switches at compile time, VCS
automatically links to VirSim’s PLI to convert simulator output into the
VCD+ file format. Refer to
Compile Options for Creating a VPD File
from VCS.
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