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use ieee.std_logic_1164.all;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_arith.all;
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use ieee.std_logic_arith.all;
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use ieee.std_logic_unsigned.all;
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use ieee.std_logic_unsigned.all;
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use work.powerGrid.all;
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use work.powerGrid.all;
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use work.scanPack.all;
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entity dComparisonCell is
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entity dComparisonCell is
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generic (
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generic (
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W1 : integer := 32; -- operands Width ( reference V.D and column V.D)
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W1 : integer := 32; -- operands Width ( reference V.D and column V.D)
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IDW : integer := 2; -- Column Sphere ID width. 1 = 2 columns max, 2= 4 colums max... and so on.
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IDW : integer := 2; -- Column Sphere ID width. 1 = 2 columns max, 2= 4 colums max... and so on.
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cIdd : in std_logic_vector (IDW - 1 downto 0); -- This is the reference column identification input.
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cIdd : in std_logic_vector (IDW - 1 downto 0); -- This is the reference column identification input.
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cIdq : out std_logic_vector (IDW - 1 downto 0); -- This is the sphere identification output.
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cIdq : out std_logic_vector (IDW - 1 downto 0); -- This is the sphere identification output.
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refk : in std_logic_vector (W1 - 1 downto 0); -- This is the columns sphere constant
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refk : in std_logic_vector (W1 - 1 downto 0); -- This is the columns sphere constant
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colk : in std_logic_vector (W1 - 1 downto 0); -- This is the reference sphere constant
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colk : in std_logic_vector (W1 - 1 downto 0); -- This is the reference sphere constant
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selk : in std_logic_vector (W1 - 1 downto 0); -- This is the selected sphere constant
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selk : out std_logic_vector (W1 - 1 downto 0); -- This is the selected sphere constant
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refvd : in std_logic_vector (W1 - 1 downto 0); -- This is the projection incoming from the previous cell.
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refvd : in std_logic_vector (W1 - 1 downto 0); -- This is the projection incoming from the previous cell.
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colvd : in std_logic_vector (W1 - 1 downto 0); -- This is the projection of the sphere position over the ray traced vector, a.k.a. V.D! .
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colvd : in std_logic_vector (W1 - 1 downto 0); -- This is the projection of the sphere position over the ray traced vector, a.k.a. V.D! .
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selvd : out std_logic_vector (W1 - 1 downto 0) -- This is the smallest value between refvd and colvd.
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selvd : out std_logic_vector (W1 - 1 downto 0) -- This is the smallest value between refvd and colvd.
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);
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);
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q => selvd
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q => selvd
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);
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);
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-- Another flip flip with 2 to 1 mux. Selects the column id the intersection signal of the smallest vd and the selected K.
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-- Another flip flip with 2 to 1 mux. Selects the column id the intersection signal of the smallest vd and the selected K.
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selectorID: scanFF
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selectorID: scanFF
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generic map (
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generic map (
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W = W1+IDW+1
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W => W1+IDW+1
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)
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)
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port map (
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port map (
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clk => clk,
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clk => clk,
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rst => rst,
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rst => rst,
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ena => pipeOn or scanOut,
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ena => pipeOn or scanOut,
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