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Problems with declaration SIGNED

Altera_Forum
Honored Contributor II
1,606 Views

Firstly sorry for my English, I used a translator. 

I'm trying to declare a variable SIGNED , plus modelsim returns me the following error: "(vcom-1078) Identifier "signed" is not directly visible." 

 

 

library ieee ; 

use ieee.std_logic_1164.all ; 

use ieee.std_logic_arith.all ;  

use ieee.std_logic_unsigned.all ; 

use ieee.std_logic_signed.all ; 

 

ENTITY test IS 

PORT(  

clk : in std_logic; 

 

saida : out sfixed(5 downto -20) -- double 

 

); 

END test; 

 

ARCHITECTURE comportamento OF test IS 

 

 

 

 

signal B_signed : signed (3 downto 0) ; 

 

 

begin 

 

 

end comportamento; 

 

 

att, 

 

 

Joao Pedro
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3 Replies
Altera_Forum
Honored Contributor II
669 Views

i have the library in modelsim

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Altera_Forum
Honored Contributor II
669 Views

Use the numeric_std library: 

 

library ieee ; 

use ieee.std_logic_1164.all ; 

use iee.numeric_std.all;
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Altera_Forum
Honored Contributor II
669 Views

thank you, worked

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