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Altera_Forum
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13 years ago

Why i can't modify my project in Chip Planner with ECOs?

Hi dears: I want to modify my design in resource property editor. As attached file shows, i want change the input from "dataf" to "dataa" or "datab", and remove "dataf". But, when i "check and...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

There are several possible reasons why the intended edit can't be implemented:

- the logic function coded in the LUT mask is referring to unconnected inputs

- you're trying to route signals to LUT inputs that can't be driven by them due to routing restrictions

The error message seams to support the first assumption.

What are you trying to achieve?