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Altera_Forum's avatar
Altera_Forum
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16 years ago

Best way to port from Cyclone II to III

Hello,

I have a complete working project in Cyclone II, with a TCL for the pin mappings, which I want to implement in a Cyclone III.

In a nutshell, is pin mapping the important part in this migration or what are the other things that I must take care of? I know this is difficult to answer without knowing what is involved, but are these migrations difficult? is there a certain guidline to follow?

Thank you.

4 Replies

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

    Thank you very much rbugalho.

    I see there is an option to choose the device in the PLL megafunction... thanks for that..
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Megafunction instances sometimes are generated to a specific devicefamily and if you change the device family, they won't work or won't work as expected.

    It's usually just a matter of editing your Megafunction, making sure the target device is correct and parameters are ok and regenerating it.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Thank you very much Avatar.

    I am using a PLL created by MegaWizard, could you please ellaborate a bit about 're-targetting' it?

    Cheers.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Unless you are doing something really complicate or with lots of different voltage standards in different IO banks - it should just be a walk in the park as they say.

    Just go ahead and change the pin assignments, or delete them entirely and see what the tool does for you.

    If you are using MEgaWizard created items, you may need to retarget them, other the that - should just work.

    Let us all know how it goes.

    Avatar.