[Cryptech Tech] Alpha board strategy

[Joachim Strömbergson]

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Aloha!

Шатов Павел wrote:
> I want to add two more FPGA families to our discussion. The first
> family is Cyclone-IV from Altera. All of its members are available in
> the free Quartus license. The second family is Artix-7 from Xilinx.
> All of its members are available in the free ISE license too. I've
> updated FPGA table, green items are available using free licenses,
> yellow ones require subscription licenses. There's a very good point
> in the possible risks list, which is taking too long to decide on
> what to have in our Alpha Board. So let's select an FPGA at first.

(Your probably didn't see my FPGA survey that I posted before Christmas
or so.) Good table.

The Cyclone-IV is manufactured in an older technology that is slower
than Cyclone-V. The biggest Cyclone-IV is as big as the biggest
Cyclone-V that we can build with free tools (A7). Thus selecting
Cyclone-IV over Cyclone-V would only remove the possibility of adding
more headroom by buying tools. Also, if you look at pricing, Cyclone-IV
is not really cheaper than Cyclone-V.

The Artix-7 is much more interesting since it would give much more
headroom. I have not been able to dig up good prices for Artix-7,
neither 100T or 200T. Do you have any estimates? It seems that the only
devices available in Artix-7 is 100T and 200T which makes any reduction
in size harder to do. But that is no big issue.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
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 Joachim Strömbergson          Secworks AB          joachim at secworks.se
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