Hi Rajeesh - Thanks very much for the reply.
Your first link takes me to the reference manual page, and the section for "Reference HDL Design" takes me back to the download page. Your second link takes me to a list of Documentation with nothing that, at least by title, appears to be what I was asking for. Did I miss something? Was one of those links supposed to take me to a document that gave further information specifically about the HDL Design?
Otherwise, I'm actually quite familiar with HDL and with some time I will figure out how to extract the non-demo part of the design from the whole (Thanks for the clue that it's a FIFO interface, that will help). I was just hoping that perhaps someone there had scoped it out and written it down already.
Sorry to have burdened you. Have a great day!
/j