Simply because the 7800 runs 2.6 out of the box, I would recommend it. The main
advantage of the ts-7300 is the second ethernet port, but it is an older board
and only 2.4 is supported.
WayneS
--- In "" <> wrote:
>
> I'm on the verge of purchasing one of these two boards, and I'm trying to
> make up my mind.
>
> On the one hand, the extra CPU MHz on the 7800 might come in handy - the plan
> is to digitise incoming video to JPEG frames, and send them over the wire and
> I doubt either board will have enough FPGA space to do a full video-rate JPEG
> encode, so it's going to be a co-design with the ARM doing some of the work
> and the FPGA doing the heavy lifting with the DCT and maybe the
> zig-zag/Huffman encoding.
>
> On the other hand, the 7300 FPGA is supported, and I'm not sure how stable /
> future-proof the 7800 user-programming procedure is that I've read about.
>
> I had a few questions to figure out whether the 7800 will do for me. I'd
> greatly appreciate any feedback :)
>
> - On the 7800 board, the FPGA is a Lattice ECP2-12 device, right ? I've
> never used one of these before, but
> http://www.wikifpga.com/index.php?title=Performance_Analysis puts it as
> generally faster than a Spartan-3, though that chart compares an S3 at grade
> -4 vs the ECP2 at grade -5.
>
> - To that point, do we know what speed-grade is used on the board ?
>
> - Is the ECP2 used on the board programmable using the downloadable tools
> from Lattice ? Reading the lattice website, it appears the ECP2 is, but the
> ECP2M/S is not. I'm not sure what the difference is between the ECP2 and
> ECP2M/S parts... If I have to spend $1500 on software, my decision is made
> for me :)
>
> - What's the delivery turnaround time from Techologic like ? I have
> Thanksgiving week off :)
>
> - Lastly, I take it that there still isn't any strategic decision to
> officially support the 7800 as a user-programmable target by Technologic
> systems ?
>
> Thanks in advance for any help :)
>
> Simon
>
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