Re: [Iverilog-devel] Xilinx/Vivado vs. SIMBUS

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

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


Yeah, in my day job we very much avoid the Xilinx supplied
simulation tools and use Icarus Verilog (and SIMBUS) instead.
But that has made some of their hard cores a little awkward
to work with. (A LOT awkward to work with. We really wish they
had open simulation models.)

On 06/07/2013 01:12 PM, Evan Lavelle wrote:
> On 07/06/2013 00:33, Stephen Williams wrote:
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
>> 
>> 
>> So isim is derived from ModelSim? I did not realize that. But 
>> ModelSim is fairly complete and I thought it would have
>> supported VPI. I guess isim/xvlog is a castrated version?
> 
> I'm pretty sure they only share the simulator engine - all the
> front-end stuff is completely different. The isim Verilog compiler
> is fantastically buggy (or it was, for several years, until I gave
> up with it a couple of years ago). I had a long list of bugs, but
> no-one from tech support ever bothered to contact me, or to do
> anything about them. I did find one very obscure run-time bug which
> was identical in both simulators, and the (other) tech support
> confirmed that the engines were the same.



- -- 
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."
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iEYEARECAAYFAlGyUygACgkQrPt1Sc2b3ik5xgCgmOvreSjolT/VNu/m1Ctp5Vcr
UGAAoMfyTEh7K4AH4L5PXAMzcSkcmJip
=a/Wl
-----END PGP SIGNATURE-----