214
Junior Member level 2
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 :
** Error: G:/vhdl code/vhdl code/dwt_main.vhd(30): (vcom-1078) Identifier "UNSIGNED" is not directly visible.
Potentially visible declarations are:
ieee.NUMERIC_STD.UNSIGNED (subtype declaration)
ieee.std_logic_arith.UNSIGNED (type declaration)
** Error: G:/vhdl code/vhdl code/dwt_main.vhd(31): (vcom-1078) Identifier "SIGNED" is not directly visible.
Potentially visible declarations are:
ieee.NUMERIC_STD.SIGNED (subtype declaration)
ieee.std_logic_arith.SIGNED (type declaration)
how to solve it
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 :
** Error: G:/vhdl code/vhdl code/dwt_main.vhd(30): (vcom-1078) Identifier "UNSIGNED" is not directly visible.
Potentially visible declarations are:
ieee.NUMERIC_STD.UNSIGNED (subtype declaration)
ieee.std_logic_arith.UNSIGNED (type declaration)
** Error: G:/vhdl code/vhdl code/dwt_main.vhd(31): (vcom-1078) Identifier "SIGNED" is not directly visible.
Potentially visible declarations are:
ieee.NUMERIC_STD.SIGNED (subtype declaration)
ieee.std_logic_arith.SIGNED (type declaration)
how to solve it