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Altera_Forum's avatar
Altera_Forum
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10 years ago

Identifier "UNSIGNED" is not directly visible

i have used the following libaries LIBRARY IEEE; USE ieee.std_logic_1164.all; USE ieee.std_logic_arith.all; USE ieee.numeric_std.all; still the error in modelsim shows : ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Try leaving out: 

USE ieee.std_logic_arith.all;

It is a deprecated library, you will find everything you need in: 

USE ieee.numeric_std.all;