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Altera_Forum
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17 years ago

Output Pins stuck at VCC or GND

Hi all. I've just finished writing and simulating a program which functions as a calculator.. However upon compiling the program, there is this warning which says: "Output Pins stuck at VCC or ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

If you mean by "assign" the pin assignment rather than logic drive then what might have happened is that the fitter was left free to assign pins as it liked. In that case possibly you are driving some outputs high which the fitter chose to assign them to those pins. user-unassigned project pins can sometimes be damaging in real systems, so beware...