When I power up the cyclone III board I see a 2.5V ~100msec pulse on the HSMC Bidirectional ports. From what I understand it is due to a weak pullup resitor on the output. I found in the pin planner you can add a column "weak pullup resistor" on/off then I turned the outputs I was using "off" but it had no effect. Anyone have an idea where I can turn this option off or if I can? If I check the Assignment editor under I/O Features it shows them off as well.
From what I read (Hot socketing and Power on Reset document) I have no choice but to use a stronger pull down R to prevent it from triggering my cct during power up.
