[sdiy] Proposed DSP board

[Scott Gravenhorst]

Neil Johnson <neil.johnson97 at ntlworld.com> wrote:
>Hi Scott,
>
>> My concern was that there might be members considering using FPGAs  
>> as synthesizers taking
>> that to mean once it's programmed, it's done or difficult to  
>> change.  Sure, once the horse
>> is halfway across the river, it's not the time to change it's shoe,  
>> but being based on
>> static RAM, and FPGA can be reloaded as often as one needs.  So in  
>> that respect, it's
>> anything but fixed.
>
>Depends - buy Actel anti-fuse FPGAs and it _is_ fixed!

Sure, one _can_ do that, but IMO that is not an optimal design environment.

I'm curious though, to those parts offer higher density, higher speed or some other
advantage that might be applied to a design that one _does_ want fixed?  

I've used FPGAs (based on static RAM) from 400K to 1800K equivalent (BS) gates,
they've been quite satisfactory to put together some very complex synthesizers (IMO).



-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
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