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Altera_Forum
Honored Contributor
Honored ContributorWhy the output of this Code is 'U' ?
Hi all Why the Sum Value is 'U' in this code ? :
LIBRARY ieee;
USE ieee.std_logic_1164.all;
ENTITY Adder_4_Bit_2C IS
PORT(
A, B : IN STD_LOGIC_VECTOR(3 DOWNTO 0);
Mode : IN STD_LOGI...
Altera_ForumHonored Contributor
Honored Contributor'U' implies they are uninitialised - ie. they have not yet been assigned a value.
Trace back the connections to see why.
