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Hello,
I've met a strange problem while manipulating pin assignments in the "Pin Planner". Changing assignment of one port changes also assignment of another port to the same value (encircled by red line on the image below). Of course, the compilation fails. Any comments ? Thanks. http://www.alteraforum.com/forum/attachment.php?attachmentid=13116&stc=1Link Copied
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What did you do prior to seeing this? The Fitter would not do this itself, so there must have been assignments made that caused this to happen.
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Nothing special ... just removed obsolete pins (after modifying ports in source code) that had nothing common with 2 pins, concerned by strange behavior.
Ok, I could resolve the problem in "Assignment Editor", but the cause of such behavior remains misunderstood.
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