How do they make Verilog code for unknown ICs?

Ian Finder ian.finder at
Mon Jun 20 15:24:18 CDT 2016

I find most of the open source HDL simulators kind of suck. I think you can
still get ModelSim Web edition for free from altera.

This will do mixed language designs of Verilog, VHDL and schematic, and
works rather nicely.

Remember, each module is just a set of input and output signals, so the
language really doesn't matter. Mixed language designs are very common.

Yes, you can even build FPGA designs in a schematic editor out of library
modules. No, I don't suggest you should.

On Monday, June 20, 2016, Paul Koning <paulkoning at> wrote:

> > On Jun 20, 2016, at 4:17 PM, Paul Koning <paulkoning at
> <javascript:;>> wrote:
> >
> >
> >> On Jun 20, 2016, at 3:35 PM, Swift Griggs <swiftgriggs at
> <javascript:;>> wrote:
> >>
> >> In my recent studies of electronics (I'm a noob for all practical
> >> purposes) I keep seeing folks refer to Verilog almost as a verb. I read
> >> about it in Wikipedia and it sounds pretty interesting. It's basically
> >> described as a coding scheme for electronics, similar to programming but
> >> with extras like signal strength and propagation included. Hey, cool!
> >
> > Verilog and VHDL are two "hardware description languages".  You can
> think of them as programming languages to describe hardware behavior.
> Another way to look at them is as languages designed to let you talk easily
> about lots of things that happen at the same time -- which is what happens
> in hardware.
> I forgot to mention: at least for VHDL, there's an open source simulator.
> In other words, a program that accepts VHDL input and lets you "run" the
> simulated hardware.  You can feed it inputs in various ways, and observe
> its behavior -- for example as waveform traces on a waveform display, like
> an oscilloscope.  Look for GHDL.  It's a GCC front end; it takes your VHDL
> code and compiles it, then it's linked with a support library to make an
> executable program.  Since it's GCC based you can do neat things, like run
> it on various hardware platforms.  Or link in C functions to do stuff, like
> simulate external peripherals connected to your hardware model.
> I haven't looked for open source Verilog simulators.
>         paul

   Ian Finder
   (206) 395-MIPS
   ian.finder at

More information about the cctalk mailing list