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Altera_Forum
Honored Contributor
9 years agoBest practice to define bidirectional pin in top level design file with Quartus II?
Being new to Quartus II and still in the phase to build some simple tests I used the Pin planner to define a bidirectional pin. This resulted in the following top level design file test1_top....
Altera_Forum
Honored Contributor
9 years agoThe first warning occurs if you define a bidirectional pin, but don't use it bidirectionally.
The second warning occurs because you apparently did not define both pins in the pin planner. Hint: A design that doesn't drive all output pins by actual logic or has unconnected input pins will always generate some warnings. You should write a useful and complete module definition, e.g. the model of a unidirectional or bidirectional tri-state driver.