Great news! Thanks guys!
Yeah, my setup isn't exactly conventional. I use all 8 channels of the FW2 input block connected directly to the ADAT out block for bringing what is to become CV (or audio) from the computer straight to my modular synth.
The synth has a DC coupled ADAT DA module (Expert Sleepers ES-3) with nice hot modular voltages. Pretty nifty! I have on occasion had the H8000FW generate LFOs and such for this purpose too. But most often I need no H8000FW processing/generation on those signals.
I also want to be able to process and record and generally manipulate audio (don't we all?) at the same time too, so I use FW1 in/out blocks for 4 audio channels from/to computer with fx A and B in various configs with the H8000FW being my main AD/DA as well. I might soon add a SPDIF line to the mess, carrying even more CV/gate to the synth.