> On May 25, 2017, at 12:14 PM, ben <bfranc...@jetnet.ab.ca> wrote:
>
> On 5/25/2017 9:39 AM, Paul Koning wrote:
>>>
>> You can do the same with other VHDL processors. If you don't want to deal
>> with a particular manufacturer and potentially pay major money for the tool
>> set, there's GHDL, a open source GCC-based VHDL modeler. It has some handy
>> capabilities, such as a way to hook C functions into the model.
>> paul
>
> I use the other BRANDS. I never liked VHDL because I can never figure how the
> logic port mapping works and the on edge logic.
> Also what is wrong with custom designs IN ADL,PAL and WINCUPL. Your FPGA
> logic is so custom you have no good portable logic for ram or rom on chip any
> how.
That remains to be seen. I'm doing a very large model on GHDL right now.
Eventually it will move to an FPGA. At that point, a few small details, like
the inner bits of the memory model, will be device dependent. Right now in
that spot I use an interface taken, more or less, from a Xilinx app note. But
that's only a few hundred lines out of about 200k lines.
As for custom languages, I've used ABEL (from Lattice). It was ok for a bit of
logic amounting to a few dozen gates, but I'm glad I'll never have to go back
to it.
There is of course Verilog as another option. I use VHDL because that's what I
learned first and because I found GHDL. There's a nice opportunity for
language wars here which I'll decline.
paul
