Wow Your talking unicorns and dragons , both rare beasts.
I do not know of a specific forum but I would try sites like Xilinx and other chip fab companies for the PVHDL arrays (PGAs) and get the gist of implementation of your programming structure . Then I would look at various user forums ( circuit cellar , etc. ) for programming models to glean enough, theres some good DARPA and Bell Labs stuff out there.
Nigal is the boards embedded controller (PIC) guru perhaps he knows of a specific source.There's also a guy I know on the JREF forum board who was a principle in the design of the MP3 coding schemes, names jj aka grumpy old skeptic . Might want to give him a yell. GL