Description
You may get this internal error in the Quartus® II software version 3.0 SP1 if you make an illegal weak pullup logic option assignment ("WEAK_PULL_UP_RESISTOR = ON") in a corner Fast PLL (FPLL) clock input pin in a Stratix™ device.
This internal error message was changed to the following type of error message in the Quartus II software version 4.0:
Error: Can't place I/O pin <name> at pin location <name> -- I/O pin uses weak pullup, which is not supported by this pin location.