[hpsdr] New Hermes 2M Board.

[Scott Traurig]

Great idea, George! Probably not enough poop for a true thin client server,
but it would solve a lot of the existing problems in the MAC/PHY, and can
handle literally all of the non-DSP stuff: SPI bus, digital I/O, etc. That
would substantially simplify development.

On that note, when engineering whatever the equivalent of the Bootloader
code is going to be, please use a valid, legal and RFC compliant MAC
address. One cannot use any sort of Layer 2 or 3 managed switch with the
current bootloader because it uses an illegal MAC address of
11:22:33:44:55:66.

All that said, however, it begs the question of where to draw the line. ARM
in the FPGA? COM on the board? PCIE and do nearly all of it a GPU/GPP? The
first and last approaches have been discussed a lot, I suspect. But what
about making provisions for COM Express on the board? Lots of good options
for processing power out there in the COM Express world.

Example: https://www.xes-inc.com/products/processor-mezzanines/xpedite7450/

Throw one of the I7's on there and it could be a thick client or thin
client.

73,

Scott/w-u-2-o



On Mon, May 29, 2017 at 8:10 AM, George Byrkit <ghbyrkit at chartermi.net>
wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> I would suggest the Cyclone V with some ARM cores running Linux.  Those
> have a true SPI interface IIRC, and can implement the network stack (well,
> it's already implemented in Linux...) with full capability, saving Phil
> VK6PH's soul for other, more critical work.  DHCP in an FPGA is not ideal...
>
> Scotty Cowling used this method with his SDRStick to good effect.  Used
> the ARROW BeMicro CV eval board, then implemented the Hermes TX and RX on
> separate daughter boards, with an interconnect board.  If I'm wrong, I'm
> sure that Scotty will chime in.
>
> TAPR has a CM in Hungary who could make these boards.  And I'm on the TAPR
> board.  Any chance that we can re-establish the TAPR/OpenHPSDR
> manufacturing and sales connection?
>
> 73,
> George K9TRV
> TAPR Board member
>
>
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