Q-bus I/O project

Wow. A pretty board indeed. Thanks for showing it off. This is also interesting to me since a friend and I have been talking about building something rather similar (and entirely different at the same time, we're just focusing on the mass storage function and using an FPGA). I'm

curious about some things though, if you'd be willing. Bus drivers (along with voltage level conversion) have been a problem. You seem to be using 74LVC parts. Are they close enough? Though I also see a bunch of FETs down there. I've used OSHPark in the past for small boards but for 45 sq.in. boards they'd seem to be awfully expensive, even if using their medium run pricing. The fingers look gold plated. It could be just the ENIG finish but I also see little tails running off the bottom as if you're setup for hard gold plating. Does OSHPark have that capability? I gotta say that I'm impressed with your soldering skill as well as stamina. I was going to ask if it was machine assembled but I see in a later message that it wasn't. I was hoping for the Pick 'n' Paste machine to come along and save me from having to do all that by hand but that project seems to have faded away. I'm curious why you didn't use resistor networks instead of discrete components. I also love that your design tool put omegas on the silk screen for the resistor values. -Dave