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Altera_Forum
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18 years ago

Warning: Removed fan-in from always-disabled I/O buffer

Hello Forum! This is my first post/question... I built a 16 bit register that connects to a tristate bus, but when I try and write to the register I can't. I get a quartus (compiler?) warning ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi Brad!

Ok, I found the problem that was causing the "removed fan-in" error message. In another of the vhdl modules in the project I was simultaneously sending a register read and a register write signal. Once I corrected the timing of the register read signal, the error message cleared.

Thanks again for your help, I really appreciated having someone to discuss this with!

:)