Playing with Verilator and GTKWave

Verilator basics

Basic steps for a simulation of an ALU in Verilator is given in this link.

GTKWave customization

There are two way to customize the GTKWave rendering :

• TCL scripts:
  • https://gist.github.com/pcotret/cfff0b6fe449c308f6e34450c11baaa9
  • https://ughe.github.io/2018/11/13/gtkwave-automation
• gtkwaverc configuration file:
  • Example: https://github.com/gtkwave/gtkwave/blob/master/gtkwave3-gtk3/examples/gtkwaverc

Command

1

gtkwave -S tcl_script.tcl waveform.vcd 

GTKWave will look for .gtkwaverc in:

1. Locally where GTKWave is launched.
2. In the user home directory.