[hpsdr] The door is open for any new-guy questions

[Graham / KE9H]

John James wrote:
> My question where is the documentation of what is in the various FGPA's. I found the code but where are the interface specifications and design of the various boards documented?  What is done in the FGPA and what is done in the PC? 
>
>   

John:

About a year ago, Kirk Weedman ran a Verilog programming school with 
about fifteen
lectures on Verilog, the last few of which were code walk throughs of 
the Mercury FPGA.

http://verilog.openhpsdr.org/

If you already have some knowledge of Verilog, you can skip the 
tutorials and go straight
to the sections on the mercury blocks and the CORDIC.

The Mercury block diagram is covered in

MercuryReceiver12_18_2009.ppt 

(towards the bottom,) although the video of the
lecture on this section was pulled for revision.

The CORDIC lecture is still posted.

The actual code has evolved through several new releases since those 
lectures, particularly
with respect to the board to board communications protocol, but Kirk 
talks about
what he was doing and planning to do in that area.  You need to read the 
code for
the details of the current implementation.

At the block level, things are still partitioned the same.

--- Graham / KE9H

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