Implementing HT protocol

Excuse the plug, but you might want to look at www.xtremedata.com. It's a pretty cool system where they take FPGAs and put them on a custom board that plugs directly into the Opteron Socket F. The FPGA interfaces(Hypertransport to the other Opteron/s, memory, etc.) are already taken care of for you. Naturally, if you need something else customized for your system, it may not work, but it's a pretty neat way to quickly get FPGA accelerators onto COTS systems.