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Altera_Forum's avatar
Altera_Forum
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12 years ago

Input port SERIESTERMINATIONCONTROL of I/O output buffer is not connected to a termin

I have an old build from Quartus 8.1 that I recompiled in Quartus 13.0.1. I am using a Cyclone III. When I compile the first time, it works. If I change nothing and just click compile again...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

One other additional piece of information .. the error seems to appear only when I use "SERIES 50 OHM WITH CALIBRATION". If I just use "SERIES 50 OHM" termination, then I do not get any errors and everything works properly.

So it seems something in the /db or /incremental_db folders that is generated from an archive using 13.0.1 is not correct with "SERIES 50 OHM WITH CALIBRATION".

Jodi