CAUSE: The specified port of the
ALT_BIDIR_DIFF or the
ALT_BIDIR_BUF I/O primitive is not connected properly. The port should be connected according to the following rules:
ALT_BIDIR_DIFF
port
|
Connected to
|
bidirin |
the padio port of the altddio_bidir megafunction |
oe |
the oe_out port of the altddio_bidir megafunction |
io |
bidir pin |
iobar |
bidir pin |
ALT_BIDIR_BUF
port
|
Connected to
|
bidirin |
the padio port of the altddio_bidir megafunction |
oe |
the oe_out port of the altddio_bidir megafunction |
io |
bidir pin |
ACTION: Connect the specified port properly and compile the design again.