Thanks for the leads. I removed the CPLD and the resistance from 3v3 to gnd went to open; repopulated it and it went to 3-ohms. Dunno what to try next. Maybe put the same CPLD back on an original REX board (non-castellated) and see what happens. But, I'd *really* love for someone to measure the resistance on a known-good REX board and let me know what it should be. Assuming the CPLD draws <= 1ma (datasheet says 17uA standby), R should be over ~3k.
-Josh
