[ksarul]

It is a nice thought, but the space below the board is only a shade more than 3/16 of an inch--about 1/16 too little for our purposes. I still have to do some tinkering to see what I can fit into the board--and I have to be careful not to break compatibility with the boards that preceded it. I may just do a small run of 10 or 20 of these to verify that all of my original assumptions are correct and then proceed to do a modified board that adds the additional functionality we want, assuming I can make everything fit. . .and I can do that, if I abandon the goal of putting the chips in sockets. That gives me a lot more usable real estate. . .