end if;
end case;
end if;
end process; end Behavioral;
adc0809: library IEEE;
use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL;
-- Uncomment the following lines to use the declarations that are -- provided for instantiating Xilinx primitive components. --library UNISIM;
--use UNISIM.VComponents.all;
entity ad0809 is
Port ( clk,reset:in std_logic; eoc:in std_logic;
D:in std_logic_vector(7 downto 0); ale,start,oe,clk500k:out std_logic; xs:out std_logic_vector(8 downto 0);
Q:out std_logic_vector(7 downto 0));
end ad0809;
architecture Behavioral of ad0809 is
type state is (st0,st1,st2,st3,st4,st5,st6); signal x:std_logic_vector(8 downto 0); signal current_state,next_state: state ; signal clk500,lock:std_logic;
signal regl:std_logic_vector(7 downto 0); begin
process(clk,reset,clk500) variable count2: integer; variable clk0: std_logic; begin if reset='0' then count2:=0; clk0:='0'; elsif clk'event and clk='1' then count2:=count2+1;
if count2=50 then
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clk0:='1';
elsif count2=100 then count2:=0;clk0:='0';
end if;
end if;
clk500<=clk0; clk500k<=clk0; end process;
process(current_state,eoc) begin
case current_state is
when st0 =>ale<='0';start<='0';oe<='0';lock<='0';x<=\ next_state<=st1;
when st1 =>ale<='1';start<='0';oe<='0';lock<='0';x<=\ next_state<=st2;
when st2 =>ale<='0';start<='1';oe<='0';lock<='0';x<=\ next_state<=st3;
when st3 =>ale<='0';start<='0';oe<='0';lock<='0';x<=\ if eoc='1' then next_state<=st3; else next_state<=st4;
end if;
when st4 =>ale<='0';start<='0';oe<='0';lock<='0';x<=\
if eoc='0' then next_state<=st4; else next_state<=st5;
end if;
when st5 =>ale<='0';start<='0';oe<='1';lock<='0';x<=\ next_state<=st6;
when st6 =>ale<='0';start<='0';oe<='1';lock<='1';x<=\ next_state<=st0;
when others =>ale<='0';start<='0';oe<='0';lock<='0';x<=\ next_state<=st0; end case; end process ;
process(clk500) begin
if rising_edge(clk500) then current_state<=next_state; end if; end process;
process(lock,x) begin
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if lock'event and lock='1'then regl<=D; end if; end process; Q<=regl; xs<=x; end Behavioral;
ym_translate;
-- Xilinx Vhdl produced by program ngd2vhdl F.28
-- Command: -quiet -rpw 100 -tpw 0 -ar Structure -xon true -w -log __projnav/ngd2vhdl.log ym.ngd ym_translate.vhd -- Input file: ym.ngd
-- Output file: ym_translate.vhd -- Design name: ym -- Xilinx: E:/ISE5.2 -- # of Entities: 1 -- Device: 2s100epq208-6
-- The output of ngd2vhdl is a simulation model. This file cannot be synthesized, -- or used in any other manner other than simulation. This netlist uses simulation -- primitives which may not represent the true implementation of the device, however -- the netlist is functionally correct. Do not modify this file.
-- Model for ROC (Reset-On-Configuration) Cell library IEEE;
use IEEE.std_logic_1164.all; use IEEE.VITAL_Timing.all; entity ROC is
generic (InstancePath: STRING := \ WIDTH : Time := 100 ns); port(O : out std_ulogic := '1') ;
attribute VITAL_LEVEL0 of ROC : entity is TRUE; end ROC;
architecture ROC_V of ROC is
attribute VITAL_LEVEL0 of ROC_V : architecture is TRUE; begin
ONE_SHOT : process begin
if (WIDTH <= 0 ns) then assert FALSE report
\ severity failure; else
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wait for WIDTH; O <= '0'; end if; wait;
end process ONE_SHOT; end ROC_V;
-- Model for TOC (Tristate-On-Configuration) Cell library IEEE;
use IEEE.std_logic_1164.all; use IEEE.VITAL_Timing.all; entity TOC is
generic (InstancePath: STRING := \ WIDTH : Time := 0 ns); port(O : out std_ulogic := '0');
attribute VITAL_LEVEL0 of TOC : entity is TRUE; end TOC;
architecture TOC_V of TOC is
attribute VITAL_LEVEL0 of TOC_V : architecture is TRUE; begin
ONE_SHOT : process begin O <= '1';
if (WIDTH <= 0 ns) then O <= '0'; else
wait for WIDTH; O <= '0'; end if; wait;
end process ONE_SHOT; end TOC_V;
library IEEE;
use IEEE.STD_LOGIC_1164.ALL; library SIMPRIM;
use SIMPRIM.VCOMPONENTS.ALL; use SIMPRIM.VPACKAGE.ALL; entity ym is port (
clk : in STD_LOGIC := 'X'; reset : in STD_LOGIC := 'X';
q : in STD_LOGIC_VECTOR ( 7 downto 0 );
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