| Line 207... |
Line 207... |
when '0' => s2asm <= (s2asm1(s2asm1'high)&s2asm1) + (s2asm0(s2asm0'high)&s2asm0);
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when '0' => s2asm <= (s2asm1(s2asm1'high)&s2asm1) + (s2asm0(s2asm0'high)&s2asm0);
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when others => s2asm <= (s2asm1(s2asm1'high)&s2asm1) or (s2asm0(s2asm0'high)&s2asm0);
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when others => s2asm <= (s2asm1(s2asm1'high)&s2asm1) or (s2asm0(s2asm0'high)&s2asm0);
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end case;
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end case;
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end process;
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end process;
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--! ******************************************************************************************************************************
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--! Mantissas sumadas, designar y normalizar
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--! Etapa3 : Mantissas sumadas, designar y normalizar
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unsignmantissa:
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unsignmantissa:
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process(s3sm)
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process(s3sm)
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begin
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begin
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s3xorslab <= ( others => s3sm(s3sm'high) );
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s3xorslab <= ( others => s3sm(s3sm'high) );
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s3um(24 downto 0) <= ( s3sm(24 downto 0) xor s3xorslab ) + (x"000000"&s3xorslab(24));
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s3um(24 downto 0) <= ( s3sm(24 downto 0) xor s3xorslab ) + (x"000000"&s3xorslab(24));
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s3sign <= s3sm(s3sm'high);
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s3sign <= s3sm(s3sm'high);
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s3factor <= x"000000"&'0';
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s3factor <= x"000000"&'0';
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s3count <= '1'&x"f";
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s3count <= '1'&x"f";
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s3unrmexp <=
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for i in 24 downto 0 loop
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for i in 24 downto 0 loop
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if s3sm(i)='1' then
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if s3um(i)='1' then
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s3factor(24-i)<='1';
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s3factor(24-i)<='1';
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s3count <= conv_std_logic_vector(24-i,5)+ ('1'&x"f") ;
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exit;
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exit;
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end if;
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end if;
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s3count<=s3count+1;
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end loop;
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end loop;
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s3nrmexpo<=s3unrmexpo+s3count;
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end process;
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end process;
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end process;
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|
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--!Normalizar el exponente y calcular el factor de corrimiento para la normalización de la mantissa
|
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process (s4uxm,expunrm)
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variable xshift : integer range 24 downto 0;
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begin
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for i in 24 downto 0 loop
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if s4uxm(i)='1' then
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xshift:=24-i;
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end of;
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end loop;
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s4expnrm <= s4expunrm-(( "000"&conv_std_logic_vector(xshift,5) )+x"ff");
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end process;
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|
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normantissafactor:
|
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process (s4expnrm)
|
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begin
|
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s4factor(0)<=s4expnrm(7);
|
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case s4expnrm(7) is
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when '1' => s4factor(8 downto 1)<=(others=>'0');
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when others =>
|
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case s4expnrm(3 downto 1) is
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when "000" => s4factor(8 downto 1)<="'00000001";
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when "001" => s4factor(8 downto 1)<="'00000010";
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when "010" => s4factor(8 downto 1)<="'00000100";
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when "011" => s4factor(8 downto 1)<="'00001000";
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when "100" => s4factor(8 downto 1)<="'00010000";
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when "101" => s4factor(8 downto 1)<="'00100000";
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when "110" => s4factor(8 downto 1)<="'01000000";
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when others => s4factor(8 downto 1)<="'10000000";
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end case;
|
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end case;
|
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end process;
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|
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end fadd32_arch;
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end fadd32_arch;
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