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Altera_Forum's avatar
Altera_Forum
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13 years ago

Additional circuit within a circuit - if then else

Hello, I am a beginner to VHDL and currently have an assignment to complete. It is as follows: A digital circuit has two 4-bit inputs a I have written the architecture correct ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

You cannot read (eg. check the value of) an output port. Either create a temporary internal signal or change the mode from "out" to "buffer".

sub : buffer integer range 0 to 15;