| Line 32... |
Line 32... |
entity sqrtdiv is
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entity sqrtdiv is
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generic (
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generic (
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reginput: string := "YES";
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reginput: string := "YES";
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c3width : integer := 18;
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c3width : integer := 18;
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functype: string := "INVERSION";
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functype: string := "INVERSION";
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iwidth : integer := 18;
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iwidth : integer := 32;
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owidth : integer := 18;
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awidth : integer := 9
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awidth : integer := 9
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);
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);
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port (
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port (
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clk,rst : in std_logic;
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clk,rst : in std_logic;
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value : in std_logic_vector (iwidth-1 downto 0);
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value : in std_logic_vector (iwidth-1 downto 0);
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zero : out std_logic;
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zero : out std_logic;
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result : out std_logic_vector (owidth-1 downto 0)
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|
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sqr : out std_logic_vector (15 downto 0);
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inv : out std_logic_vector (16 downto 0)
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);
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);
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end sqrtdiv;
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end sqrtdiv;
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architecture sqrtdiv_arch of sqrtdiv is
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architecture sqrtdiv_arch of sqrtdiv is
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| Line 58... |
Line 59... |
--! funky::Segunda etapa: Calculo del valor de la funcion evaluada en f.
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--! funky::Segunda etapa: Calculo del valor de la funcion evaluada en f.
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signal funkyadd : std_logic_vector (2*awidth-1 downto 0);
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signal funkyadd : std_logic_vector (2*awidth-1 downto 0);
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signal funkyexp : std_logic_vector (2*integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal funkyexp : std_logic_vector (2*integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal funkyzero : std_logic;
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signal funkyzero : std_logic;
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signal funkyq : std_logic_vector (2*c3width+3 downto 0);
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signal funkyq : std_logic_vector (2*c3width-1 downto 0);
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signal funkyselector : std_logic;
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signal funkyselector : std_logic;
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--! cumpa::Tercera etapa: Selecci'on de valores de acuerdo al exp escogido.
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--! cumpa::Tercera etapa: Selecci'on de valores de acuerdo al exp escogido.
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signal cumpaexp : std_logic_vector (2*integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal cumpaexp : std_logic_vector (2*integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal cumpaq : std_logic_vector (2*c3width+3 downto 0);
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signal cumpaq : std_logic_vector (2*c3width-1 downto 0);
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signal cumpaselector : std_logic;
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signal cumpaselector : std_logic;
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signal cumpazero : std_logic;
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signal cumpazero : std_logic;
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signal cumpaN : std_logic_vector (integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal cumpaN : std_logic_vector (integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal cumpaF : std_logic_vector (c3width+1 downto 0);
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signal cumpaF : std_logic_vector (c3width-1 downto 0);
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|
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--! chief::Cuarta etapa: Corrimiento a la izquierda o derecha, para el caso de la ra'iz cuadrada o la inversi'on respectivamente.
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--! chief::Cuarta etapa: Corrimiento a la izquierda o derecha, para el caso de la ra'iz cuadrada o la inversi'on respectivamente.
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signal chiefN : std_logic_vector (integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal chiefN : std_logic_vector (integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal chiefF : std_logic_vector (c3width+1 downto 0);
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signal chiefF : std_logic_vector (c3width-1 downto 0);
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signal chiefQ : std_logic_vector (c3width-1 downto 0);
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--! inverseDistance::Quinta etapa
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signal iDistN : std_logic_vector (integer(ceil(log(real(iwidth),2.0)))-1 downto 0);
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signal iDistF : std_logic_vector (c3width-1 downto 0);
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--! Constantes para manejar el tamaño de los vectores
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--! Constantes para manejar el tamaño de los vectores
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constant exp1H : integer := 2*integer(ceil(log(real(iwidth),2.0)))-1;
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constant exp1H : integer := 2*integer(ceil(log(real(iwidth),2.0)))-1;
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constant exp1L : integer := integer(ceil(log(real(iwidth),2.0)));
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constant exp1L : integer := integer(ceil(log(real(iwidth),2.0)));
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constant exp0H : integer := exp1L-1;
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constant exp0H : integer := exp1L-1;
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constant exp0L : integer := 0;
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constant exp0L : integer := 0;
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| Line 87... |
Line 92... |
constant add1L : integer := awidth;
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constant add1L : integer := awidth;
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constant add0H : integer := awidth-1;
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constant add0H : integer := awidth-1;
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constant add0L : integer := 0;
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constant add0L : integer := 0;
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|
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constant c3qHH : integer := 2*c3width+3;
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constant c3qHH : integer := 2*c3width-1;
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constant c3qHL : integer := c3width+2;
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constant c3qHL : integer := c3width;
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constant c3qLH : integer := c3width+1;
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constant c3qLH : integer := c3width-1;
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constant c3qLL : integer := 0;
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constant c3qLL : integer := 0;
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begin
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begin
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|
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--! expomantis.
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--! expomantis.
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| Line 145... |
Line 150... |
else
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else
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funkyselector<='1';
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funkyselector<='1';
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end if;
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end if;
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end process funkyget;
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end process funkyget;
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funkyinversion:
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if functype="INVERSION" generate
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meminvr:func
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generic map (memoryPath&"meminvr.mif")
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port map(
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expomantisadd(awidth-1 downto 0),
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expomantisadd(2*awidth-1 downto awidth),
|
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clk,
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funkyq(c3qLH-2 downto c3qLL),
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funkyq(c3qHH-2 downto c3qHL));
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end generate funkyinversion;
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funkysquare_root:
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sqrt: funcinvr
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if functype="SQUARE_ROOT" generate
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sqrt: func
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generic map (memoryPath&"memsqrt.mif")
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generic map (memoryPath&"memsqrt.mif")
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port map(
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port map(
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expomantisadd(awidth-1 downto 0),
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funkyadd(awidth-1 downto 0),
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(others => '0'),
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clk,
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clk,
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funkyq(c3qLH-2 downto c3qLL),
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funkyq(c3qLH downto c3qLL));
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open);
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sqrt2x: func
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sqrt2x: funcinvr
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generic map (memoryPath&"memsqrt2f.mif")
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generic map (memoryPath&"memsqrt2f.mif")
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port map(
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port map(
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(others => '0'),
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funkyadd(2*awidth-1 downto awidth),
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expomantisadd(2*awidth-1 downto awidth),
|
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clk,
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clk,
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open,
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funkyq(c3qHH downto c3qHL));
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funkyq(c3qHH-2 downto c3qHL));
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|
|
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end generate funkysquare_root;
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|
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--! cumpa.
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--! cumpa.
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cumpaProc:
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cumpaProc:
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process (clk,rst)
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process (clk,rst)
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begin
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begin
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| Line 207... |
Line 195... |
cumpaN<=cumpaexp(exp1H downto exp1L);
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cumpaN<=cumpaexp(exp1H downto exp1L);
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cumpaF<=cumpaq(c3qHH downto c3qHL);
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cumpaF<=cumpaq(c3qHH downto c3qHL);
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end if;
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end if;
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end process cumpaMux;
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end process cumpaMux;
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|
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--! chief.
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--! Branching.
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-- exp <= chiefN;
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-- fadd <= chiefF(c3width-2 downto c3width-1-awidth);
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chiefProc:
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chiefProc:
|
process (clk,rst)
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process (clk,rst)
|
begin
|
begin
|
if rst=rstMasterValue then
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if rst=rstMasterValue then
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chiefF <= (others => '0');
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chiefF <= (others => '0');
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| Line 221... |
Line 211... |
chiefN <= cumpaN;
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chiefN <= cumpaN;
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zero <= cumpazero;
|
zero <= cumpazero;
|
end if;
|
end if;
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end process chiefProc;
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end process chiefProc;
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chiefShifter: RLshifter
|
chiefShifter: RLshifter
|
generic map(functype,c3width+2,iwidth,owidth)
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generic map("SQUARE_ROOT",c3width,iwidth,16)
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port map(
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port map(
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chiefN,
|
chiefN,
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chiefF,
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chiefF,
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result);
|
sqr);
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branching_invfunc:
|
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if functype="INVERSION" generate
|
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sqrt: funcinvr
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generic map (memoryPath&"meminvr.mif")
|
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port map(
|
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chiefF(c3width-2 downto c3width-1-awidth),
|
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clk,
|
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chiefQ(c3width-1 downto 0));
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|
|
|
|
|
|
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end generate branching_invfunc;
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|
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branchingHighLander:
|
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if functype="SQUARE_ROOT" generate
|
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chiefQ <= (others => '0');
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end generate branchingHighLander;
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|
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--! Inverse
|
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inverseDistanceOK:
|
|
if functype="INVERSION" generate
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|
|
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inverseDistance:
|
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process (clk,rst)
|
|
begin
|
|
|
|
if rst=rstMasterValue then
|
|
iDistN <= (others => '0');
|
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iDistF <= (others => '0');
|
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elsif clk'event and clk='1' then
|
|
iDistN <= chiefN;
|
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iDistF <= chiefQ;
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end if;
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|
|
|
|
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end process inverseDistance;
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|
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inverseShifter: RLshifter
|
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generic map("INVERSION",c3width,iwidth,17)
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port map(
|
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iDistN,
|
|
iDistF,
|
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inv);
|
|
end generate inverseDistanceOK;
|
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|
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inverseDistanceNOTOK:
|
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if functype = "SQUARE_ROOT" generate
|
|
iDistN <= (others => '0');
|
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iDistF <= (others => '0');
|
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inv <= (others => '0');
|
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end generate inverseDistanceNOTOK;
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|
|
end sqrtdiv_arch;
|
end sqrtdiv_arch;
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