Forum Discussion

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

Warning during compilation

Hi all,

I've found some warnings, like these two:

  • warning: some pins have incomplete i/o assignments. refer to the i/o assignment warnings report for details

  • warning: no exact pin location assignment(s) for 5 pins of 5 total pins

    info: pin clk_o not assigned to an exact location on the device

    info: pin en_o not assigned to an exact location on the device

    info: pin ref_clk_i not assigned to an exact location on the device

    info: pin reset_i not assigned to an exact location on the device

    info: pin clk_i not assigned to an exact location on the device

Where am I going wrong?

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    you're not assigning pins to top level signals. If you dont assign them specific pins, Quartus will assign them randomly (and appropriatly, so clocks should be assigned to clock pins).

    Use the assignments editor to do this.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Perfect, I've assigned PINS, but now making "Start I/O Assignment Analysis", 've found this error:

    warning: timing-driven compilation is disabled - timing performance will not be optimized.

    What have I forgotten?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    This is probably because you do not have a timing constraints file. You can create one using timequest.