Modelsim PE vs. Aldec Active-HDL (PE)
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From: d_s_klein on 3 Mar 2010 17:42 On Mar 3, 5:02 am, "Pete Fraser" <pfra...(a)covad.net> wrote: > I've finally decided to buy a better simulator > (I've been making do with Modelsim XE so far). > > Any thoughts as to the relative merits of Modelsim PE and > Active-HDL (PE) for FPGA simulation? > > Thanks > > Pete One complaint I have about Active-HDL is that it insists on making a copy of the sources and hiding them in a not so easy to find location. It will then simulate these, and only these copies. If you change a file while simulating, you have to remember to copy it out. If you change something between simulations, you have to re-import it. This "feature" makes the simulator mostly useful only *after* all the bugs are fixed. (argh) The ModelSim windows GUI is definitely getting worse with time. The Linux GUI seems to be getting better though. RK
From: rickman on 3 Mar 2010 22:11 On Mar 3, 5:42 pm, d_s_klein <d_s_kl...(a)yahoo.com> wrote: > On Mar 3, 5:02 am, "Pete Fraser" <pfra...(a)covad.net> wrote: > > > I've finally decided to buy a better simulator > > (I've been making do with Modelsim XE so far). > > > Any thoughts as to the relative merits of Modelsim PE and > > Active-HDL (PE) for FPGA simulation? > > > Thanks > > > Pete > > One complaint I have about Active-HDL is that it insists on making a > copy of the sources and hiding them in a not so easy to find > location. It will then simulate these, and only these copies. If you > change a file while simulating, you have to remember to copy it out. > If you change something between simulations, you have to re-import it. > > This "feature" makes the simulator mostly useful only *after* all the > bugs are fixed. (argh) > > The ModelSim windows GUI is definitely getting worse with time. The > Linux GUI seems to be getting better though. > > RK The copying of source files to a folder within the simulation directory is the default, but you can override it. The "Add Files" dialog box has a "Make Local Copy" checkbox which once you uncheck it, seems to stay unchecked. My most recent issue with ActiveHDL is how to copy a project. But I finally figured out that "Save Design As" in the File menu does what I want. Just "Save As" only seems to save the waveform file. I kept looking under things titled "Workspace" which was not the ticket. Rick
From: HT-Lab on 4 Mar 2010 04:14 "d_s_klein" <d_s_klein(a)yahoo.com> wrote in message news:1f799796-32dd-4768-b66a-a935352c24f1(a)u19g2000prh.googlegroups.com... On Mar 3, 5:02 am, "Pete Fraser" <pfra...(a)covad.net> wrote: > I've finally decided to buy a better simulator > (I've been making do with Modelsim XE so far). > >One complaint I have about Active-HDL is that it insists on making a >copy of the sources and hiding them in a not so easy to find >location. It will then simulate these, and only these copies. If you >change a file while simulating, you have to remember to copy it out. >If you change something between simulations, you have to re-import it. > >This "feature" makes the simulator mostly useful only *after* all the >bugs are fixed. (argh) > > >The ModelSim windows GUI is definitely getting worse with time. Yes, I found the same, however, when you install a new version of Modelsim the registry keys are not overwritten so to preserve your GUI settings. I found that deleting (or renaming) this entry fixes a lot of GUI instabilities. When you restart Modelsim it automatically rebuilds them. See: HKEY_CURRENT_USER\Software\Model Technology Incorporated\ModelSim Hans www.ht-lab.com
From: Raymund Hofmann on 4 Mar 2010 10:55 On 3 Mrz., 14:02, "Pete Fraser" <pfra...(a)covad.net> wrote: > Any thoughts as to the relative merits of Modelsim PE and > Active-HDL (PE) for FPGA simulation? What about Systemverilog support? To my last evaluation Aldec still lags considerably behind Mentor and thus wasn't a option to me.
From: cfelton on 4 Mar 2010 11:07
>What about Systemverilog support? > That might be true, does anyone know what the level of SystemVerilog support is in Active-HDL. Back in 2005 was using Modelsim-PE with SystemVerilog fine, support all features I used then, class, interface, etc. BOMK it has been expanded since then. You can get 30 day eval of both (pretty sure). Might be worth trying out unless there is a show stopper like SystemVerilog or multi-language support, Active-HDL supports Verilog/VHDL without an extra license (i think). --------------------------------------- Posted through http://www.FPGARelated.com |