Re: [Iverilog-devel] $monitor/$strobe and friend (pr1780480).

[Cary R. <cy...@ya...>]

--- Stephen Williams <st...@ic...> wrote:

> Look at all the various kinds of expression nodes are supported
> by the VPI:-(

And it's real nice that we can safely ignore them in Icarus :-).
 
> That's something like a vpi expression node that supports vpi_get_value
> by evaluating the expression. Perhaps the code generator can write
> out the vpi expression nodes and make them available to the system
> task?

OK I will think about this.

One complication so far is do we need to handle special the case when a
$strobe is called inside a loop that may be changing a variable the
expression depends on? Something like:

// $strobe the elements of an array.
for(idx = 0; idx < 8; idx = idx + 1) begin
  $strobe(a[idx]);
end
#1;

In this case do we assume the index variable is different for each call
(is an argument) or is it just a normal expression? I believe the correct
interpretation is that you will end up with eight strobes all displaying
the value of a[8]. Thoughts?

Cary


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