Re: [Iverilog-devel] VHDL/mixed language progress

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

May I request a slight diversion? Along with vlog95 enhancements I have also 
started implementing the $table_model() function from Verilog-A. This would 
allow use to import arbitrary measured model data into Icarus when performing 
real valued simulation. The sticking point it that this is typically used in a 
structural context (a continuous assignment) and the file name string and 
control string are not currently kept as string constants. So what I need is an 
enhancement to vvp that allows constants (and more specifically constant 
strings) to be recognized in a structural context. One thought was to add a new 
function argument type s<#> to indicate a string constant of the given width was 
connected to the given argument. The issues is how to connect the appropriate 
constant/parameter string to the argument.

Cary
 

----- Original Message ----
From: Stephen Williams <st...@ic...>
To: Discussions concerning Icarus Verilog development 
<ive...@li...>
Sent: Mon, April 18, 2011 11:45:40 AM
Subject: [Iverilog-devel] VHDL/mixed language progress

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I've just pushed into git master a wrap-up of a bunch of improvements
to VHDL language support. VHDL simulation support is still pretty
basic, but it's starting to show increasing promise. I've pushed a
few new VHDL regression tests into the test suite as well, so you
can see what should work now.

I'm starting to think about my next step on VHDL, which may turn
out to be support for processes (behavioral code). My target is to
support synthesizable VHDL code, and I think basic processes are
used for describing synchronous logic.

If anyone has strong opinions on where the VHDL support should go
next (i.e. if you have legacy VHDL code you want to simulate) then
I'm open for discussion of what's most pressing.

- -- 
Steve Williams                "The woods are lovely, dark and deep.
steve at icarus.com           But I have promises to keep,
http://www.icarus.com         and lines to code before I sleep,
http://www.picturel.com       And lines to code before I sleep."
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