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Altera_Forum's avatar
Altera_Forum
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16 years ago

mux warning "Clock multiplexers are found and protected"

I implemented a simple mux like this always @ (sel or in1 or in2 or in3 or in4) begin case(sel) 2'b00 : out = in1; 2'b01 : out = in2; 2'b10 : out = in3; ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

As a general tip, if you want more information on a warning or error in Quartus, just right click on the error or warning and click help.

I don't hink you need to do anything unless you have a reason to. Quartus is just telling you that it did in fact recognize your multiplexer.

Read the HDL coding guidelines for multi-plexers beginning on page 6-61 of this document:

http://www.altera.com/literature/hb/qts/qts_qii51007.pdf

Jake