Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Quite strange behavior of the "Pin Planner"

Altera_Forum
Honored Contributor II
922 Views

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=1
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Altera_Forum
Honored Contributor II
242 Views

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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Altera_Forum
Honored Contributor II
242 Views

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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