Re: [Iverilog-devel] Iverilog support for synthesis thargeting Virtex - 4 FPGA - Reg.

[Stephen W. <st...@ic...>]

Strictly speaking, no version synthesizes directly to any FPGA,
and all versions support simulation for any target. Let me
explain:

Synthesis all the way down to a specific technology is not
directly supported by Icarus Verilog. We made the conscious
choice that the vendors are never going to make it easy and
will generally provide free tools to target their devices
anyhow, so it is better to let the vendor provide the synthesizers.
In your case, xst from WebPack should work fine for you.

Simulation is a different story, and Icarus Verilog tries to
support as wide a field as possible, and many people do indeed
use it to simulate designs intended for Xilinx and other FPGA
devices. I recommend v10 for that.

The synthesis support that Icarus Verilog does have is for
more generic targets, i.e. BLIF and sizer, or as a foundation
for a 3rd party to provide their own code generator to target
odd devices. In this case, the 0.8 synthesis has since been
outrun by v10 synthesis support.

On 04/12/2016 10:45 AM, Ravi Selvaraj wrote:
> I am using Icarus Verilog 0.8.6, the one which supports synthesis.
> When I tried to synthesis a Verilog file targeting Virtex -4 FPGA, I
> have got a command that there is no such target.
> 
> Can you please suggest me the Icarus tool version that supports Virtex -
> 4 FPGA based synthesis.
> -- 
> Ravi. S


-- 
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."