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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

unconnect port warning.

when a instance port is not connected,

Quartus report a connectivty issue.

how to avoid this.

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    In VDHL use 'open'

    E.g

    a : b port map (

    clk => clk ,

    ...

    thispin => open,

    ...

    ) ;
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    thank you. but i like use Verilog. Do you know how write Verilog code like this?

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Sorry, I wouldn't touch Verilog with a bargepole i.e. I don't know much about Verilog.

    Let's hope the Verilog experts will step in.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    In VHDL and verilog, any out ports left out are left open by default. But you must connect and input port to something if it has no default value, even if it's a constant.

    WHy not post the actual error?