Forum Discussion
Altera_Forum
Honored Contributor
15 years agoI'm guessing bidirectional pins can't be virtual. A virtual pin routes inside the FPGA and never goes to an I/O. A bidir has a tri-state component that only exists in the I/O. I'm not sure how that would be virtual unless the tri-state was ripped out. I'm guessing the virtual assignment is ignored for those I/O.