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Rev 24 → Rev 25

/trunk/BLRT/floor0Row.vhd
0,0 → 1,99
-- This is a template for generate a grid row in the JART control.
 
 
-- 1 . Dont register them: But for there is going to be a maximun number of columns where porpagation times are going to be
-- too high in order to substain a one clock upwards pipe. It depends upon the platform you are using how many columns you can implement in the row without registering them.
 
-- Ray Difussion Pipe Longitude (
-- Row Ray Difussion Time ( RRDT ) in clks: 2 + log 2 (Number of Columns) clks.
-- An excellent difussion Time, but the max number of columns its limited by the platform specs.
-- Even it is an excellent time is not much of gain because this time is the same time of the pipe longitude, thus a result each clock is achieved anyway.
 
 
-- 2. Register them
 
library ieee;
use ieee.std_logic_1164.all;
use work.powerGrid.all;
 
 
entity floor0Row is
generic (
nlw : integer := 32; -- Next Level Width (V.D width)
viw : integer := 18; -- Vector input Width
col : integer := 4; -- Number of Colums
);
port ( -- Input Control Signal
clk, rst, nxtRay, nxtSphere : in std_logic;
-- Clk, Rst, the usual control signals.
-- enabled, the machine is running when this input is set.
-- enabled, all the counters begin again.
-- Input Values
iRayx: in std_logic_vector (viw - 1 downto 0);
iRayy: in std_logic_vector (viw - 1 downto 0);
iRayz: in std_logic_vector (viw - 1 downto 0); -- The ray input vector.
iSphrCenterx: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
iSphrCentery: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
iSphrCenterz: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCenterx: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCentery: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCenterz: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
-- Output Values
oRayx: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
oRayy: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
oRayz: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
vdOutput : out std_logic_vector (nlw*col - 1 downto 0) -- The dot product emerging from each dot prod cell.
);
end entity;
 
architecture rtl of floor0Row is
 
signal sRayx : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
signal sRayy : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
signal sRayz : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
begin
 
theCells : for i in 0 to col-1 generate
dotCellx : dotCell port map (
clk => clk,
rst => rst,
nxtSphere => nxtSphere,
nxtRay => nxtRay,
vxInput => iSphrCenterx((i+1)*viw-1 downto i*viw),
vyInput => iSphrCentery((i+1)*viw-1 downto i*viw),
vzInput => iSphrCenterz((i+1)*viw-1 downto i*viw),
vxOutput => oSphrCenterx((i+1)*viw-1 downto i*viw),
vyOutput => oSphrCentery((i+1)*viw-1 downto i*viw),
vzOutput => oSphrCenterz((i+1)*viw-1 downto i*viw),
dxInput => sRayx ((i+1)*viw-1 downto i*viw),
dyInput => sRayx ((i+1)*viw-1 downto i*viw),
dzInput => sRayx ((i+1)*viw-1 downto i*viw),
dxOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
dyOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
dzOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
vdOutput => vdOutput((i+1)*view-1 downto i*viw)
);
 
end generate;
 
-- Connect the first and last rays.
sRayx (viw-1 downto 0) <= iRayx;
sRayy (viw-1 downto 0) <= iRayy;
sRayz (viw-1 downto 0) <= iRayz;
oRayx <= sRayx ((col+1)*viw - 1 downto col*viw);
oRayy <= sRayy ((col+1)*viw - 1 downto col*viw);
oRayz <= sRayz ((col+1)*viw - 1 downto col*viw);
 
end rtl;

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