Dear Tristan,

I am looking for information regarding the GHDL Waveform (GHW) format that you have devised for use in GHDL.

As can be seen in the GTKwave manual, an implementation and interface for manipulating GHW data is part of the source code. According to the manual, you are the author of the GHW-relevant code in GTKwave (please correct if I'm wrong). Specifically, files ghwlib.c and ghwlib.h in the GTKwave source code, provide the necessary functionality for working with GHW. However, I wasn't able to locate a reference grammar for GHW, e.g. one that would be BNF/EBNF or yacc-like grammar.

Does such grammar exist? Is there any additional information on GHW that would help derive such grammar?

Thank you in advance.

Best regards
Nikolaos Kavvadias


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