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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

Hi,

Is your I/O "ad_rst" one of a external memory pins ? (may be ddr)

Many threads of the forum talk about lunching a .tcl file to fulfil pin assignment for external memory controllers.

Keep only the location_assignment for your pin, and remove the others.

The .tcl will do it properly for you.

regards,