Tristan Gingold <[email protected]> writes:

> On Wed, Dec 24, 2008 at 04:59:55PM -0200, Paulo Costa wrote:
>> Hello!
>> I've had the chance to use FPGAs at college last semester, and really
>> enjoyed it.
>> Unfortunately, I'm unable to get an FPGA of my own, but I do have an ARM
>> development kit, and was thinking about using it as a (poor) replacement: My
>> idea is to compile my designs with GHDL, write some native I/O stuff, link
>> them together and run into my ARM kit.
>> 
>> The problem is that I have no idea on how to use GHDL to compile to a
>> different platform. Since GHDL uses the GCC backend, I suppose it's
>> possible, but I don't know where to start.
>> 
>> I'd like to hear what do you think about his project, and if you have any
>> ideas on how to set it to use the "ARM backend" instead.
>
> I don't really understand what you want to do.
> GHDL is a simulator.  You need a full OS to run it.  Why do you want to use
> it on an ARM ?

I think he wants to use the ARM as an FPGA simulator, since he doesn't
have a real FPGA to run on. That's not going to work.

One option is to get a small, real FPGA; for about $2,000 you can get
one from Acromag that will work in a Windows PCI box; you need a
carrier card and an FPGA IP module (I use these at work):

http://www.acromag.com/functions.cfm?Category_ID=1&Group_ID=1
http://www.acromag.com/models.cfm?Product_Function_ID=5&Category_ID=2&Group_ID=1

You can get compilers for other languages that will run on the ARM.
Ada is close to VHDL in syntax, but the semantics are quite different;
an FPGA is quite different from a CPU.

-- 
-- Stephe

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