Forum: GHDL GHDL Visualization

I am new to the list, but saw the visualization thread posted on
November 25th by Tristan.

I would love it if GHDL could output, for visualization, block
diagrams/hierarchy tree (graphviz, tikz, some other format?) and
finite state machines.

Does anyone have any idea how feasible something like this may be to
incorporate into GHDL?

Brian

Doxygen is starting to develop for VHDL.

On Thu, Dec 11, 2008 at 11:39 AM, Kendrick Hamilton
<hamilton@sedsystems.ca> wrote:
> Doxygen is starting to develop for VHDL.

Does doxygen actually read my FSM from VHDL, or does it just take some
comments I make and generate from that?

Since GHDL parses the VHDL, I would think it might be feasible to show
the transitions between states for enumerated types being used within
case statements.

The block diagram would just be a nice feature for documentation 
generation.

The main issue I have with doxygen is that it's driven by comments and
not by the code.  The code gets analyzed, elaborated and synthesized;
the comments do not.

Brian

You are correct, Doxygen reads the comments only.

Brian Padalino wrote:
> Brian
>   
GHDL can generate block hierarchy tree on standard output (text) at
simulation time using "--disp-tree" option:
http://ghdl.free.fr/ghdl/Simulation-options.html#Simulation-options

On Thu, Dec 11, 2008 at 08:24:37PM +0100, Sylvere Teissier wrote:
> GHDL can generate block hierarchy tree on standard output (text) at 
> simulation time using "--disp-tree" option:
> http://ghdl.free.fr/ghdl/Simulation-options.html#Simulation-options

Right.  It can also pretty print your vhdl sources, eg:
http://ghdl.free.fr/dlx/mux2-behaviour.47.html

If you need to extract state machine, first you have to design the
algorithm, the implementation shouldn't be very hard.

Tristan.