The last 5 days or so have been spent putting together the board and testing. Three trace cuts and three added wires later, the board is coming up on the Atari 800XL here on the bench. The trace cuts and wires were needed to work around omissions in the latest board run (our fault, not the PCB manufacturer's).
There's still an issue with the board working the Atari XEGS, so we're trying to pin down the proper equations to deal with the timing issues surrounding that system. Once that's in place, the boards will start going out the door.