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dimamali |
-- --------------------------------------------------------------------
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-- >>>>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
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-- --------------------------------------------------------------------
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-- Copyright (c) 2005 by Lattice Semiconductor Corporation
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-- --------------------------------------------------------------------
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--
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--
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-- Lattice Semiconductor Corporation
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-- 5555 NE Moore Court
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-- Hillsboro, OR 97214
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-- U.S.A.
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--
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-- TEL: 1-800-Lattice (USA and Canada)
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-- 1-408-826-6000 (other locations)
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--
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-- web: http://www.latticesemi.com/
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-- email: techsupport@latticesemi.com
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--
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-- --------------------------------------------------------------------
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--
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-- Simulation Library File for EC/XP
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--
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-- $Header: G:\\CVS_REPOSITORY\\CVS_MACROS/LEON3SDE/ALTERA/grlib-eval-1.0.4/lib/tech/ec/ec/ORCA_L.vhd,v 1.1 2005/12/06 13:00:23 tame Exp $
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--
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library std;
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use std.textio.all;
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library ieee, std;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_unsigned.all;
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use std.textio.all;
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-- ************************************************************************
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-- Entity definition
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-- "generic" members
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-- ************************************************************************
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entity SC_BRAM_16K_L is
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generic (
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AWRITE_MODE : string := "NORMAL";
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BWRITE_MODE : string := "NORMAL";
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WADDR_WIDTH_A : integer := 14;
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RADDR_WIDTH_A : integer := 12;
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WADDR_WIDTH_B : integer := 14;
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RADDR_WIDTH_B : integer := 12;
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WDATA_WIDTH_A : integer := 1;
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RDATA_WIDTH_A : integer := 4;
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WDATA_WIDTH_B : integer := 1;
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RDATA_WIDTH_B : integer := 4;
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ARRAY_SIZE : integer := 262144;
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MEM_INIT_FLAG : integer := 0;
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MEM_INIT_FILE : string := ""
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);
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port (
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WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
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WEA : in STD_LOGIC ;
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WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
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RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
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REA : in STD_LOGIC ;
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RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
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WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
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WEB : in STD_LOGIC;
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WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
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RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
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REB : in STD_LOGIC;
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RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
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);
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end SC_BRAM_16K_L;
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-- ************************************************************************
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-- Architecture
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-- ************************************************************************
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architecture LATTICE_BEHAV of SC_BRAM_16K_L is
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procedure READ_MEM_INIT_FILE(
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f_name : IN STRING;
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v_MEM : OUT STD_LOGIC_VECTOR
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) IS
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file f_INIT_FILE : TEXT is MEM_INIT_FILE;
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variable v_WORD : line;
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variable v_GOODFLAG : boolean;
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variable v_WORD_BIT : string (WDATA_WIDTH_A downto 1) ;
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variable v_CHAR : character;
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variable v_OFFSET : integer := 0;
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variable v_LINE : integer := 0;
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begin
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while ( not(endfile(f_INIT_FILE)) and (v_LINE < 2**WADDR_WIDTH_A)) loop
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readline(f_INIT_FILE, v_WORD);
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read(v_WORD, v_WORD_BIT, v_GOODFLAG);
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for k in 0 to WDATA_WIDTH_A - 1 loop
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v_CHAR := v_WORD_BIT (k + 1);
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if (v_CHAR = '1') then
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v_MEM(v_OFFSET + k) := '1';
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elsif (v_CHAR = '0') then
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v_MEM(v_OFFSET + k) := '0';
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-- else
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-- v_MEM(v_OFFSET + k) := 'X';
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end if;
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end loop;
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v_LINE := v_LINE + 1;
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v_OFFSET := v_OFFSET + WDATA_WIDTH_A;
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end loop;
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end READ_MEM_INIT_FILE;
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--------------------------------------------------------------------------
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-- Function: Valid_Address
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-- Description:
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--------------------------------------------------------------------------
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function Valid_Address (
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IN_ADDR : in std_logic_vector
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) return boolean is
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variable v_Valid_Flag : boolean := TRUE;
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begin
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for i in IN_ADDR'high downto IN_ADDR'low loop
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if (IN_ADDR(i) /= '0' and IN_ADDR(i) /= '1') then
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v_Valid_Flag := FALSE;
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end if;
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end loop;
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return v_Valid_Flag;
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end Valid_Address;
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--------------------------------------------------------------------------
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-- Signal Declaration
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--------------------------------------------------------------------------
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--------- Local signals used to propagate input wire delay ---------------
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signal WADA_node : std_logic_vector( WADDR_WIDTH_A -1 downto 0) := (others => '0');
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signal WEA_node : std_logic := 'X';
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signal WDA_node : std_logic_vector( WDATA_WIDTH_A -1 downto 0) := (others => 'X');
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signal RADA_node : std_logic_vector( RADDR_WIDTH_A -1 downto 0) := (others => '0');
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signal REA_node : std_logic := 'X';
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signal RDA_node : std_logic_vector( RDATA_WIDTH_A -1 downto 0) := (others => 'X');
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signal RDA_temp : std_logic_vector( RDATA_WIDTH_A -1 downto 0) := (others => 'X');
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signal WADB_node : std_logic_vector( WADDR_WIDTH_B -1 downto 0) := (others => '0');
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signal WEB_node : std_logic := 'X';
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signal WDB_node : std_logic_vector( WDATA_WIDTH_B -1 downto 0) := (others => 'X');
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signal RADB_node : std_logic_vector( RADDR_WIDTH_B -1 downto 0) := (others => '0');
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signal REB_node : std_logic := 'X';
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signal RDB_node : std_logic_vector( RDATA_WIDTH_B -1 downto 0) := (others => 'X');
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signal RDB_temp : std_logic_vector( RDATA_WIDTH_B -1 downto 0) := (others => 'X');
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-- architecture
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begin
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WADA_node <= WADA;
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WEA_node <= WEA;
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WDA_node <= WDA;
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RADA_node <= RADA;
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REA_node <= REA;
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RDA <= RDA_TEMP;
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WADB_node <= WADB;
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WEB_node <= WEB;
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WDB_node <= WDB;
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RADB_node <= RADB;
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REB_node <= REB;
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RDB <= RDB_TEMP;
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RDB_process: process(RDB_node, WEB_node)
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begin
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if (WEB_node = '1') then
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if (BWRITE_MODE = "WRITETHROUGH") then
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RDB_temp <= RDB_node;
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elsif (BWRITE_MODE = "NORMAL") then
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RDB_temp <= RDB_temp;
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end if;
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else
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RDB_temp <= RDB_node;
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end if;
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end process;
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RDA_process: process(RDA_node, WEA_node)
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begin
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if (WEA_node = '1') then
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if (AWRITE_MODE = "WRITETHROUGH") then
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RDA_temp <= RDA_node;
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elsif (AWRITE_MODE = "NORMAL") then
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RDA_temp <= RDA_temp;
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end if;
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else
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RDA_temp <= RDA_node;
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end if;
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end process;
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-----------------------------------------
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--------- Behavior process -------------
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-----------------------------------------
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KERNEL_BEHAV : process( WADA_node, WEA_node, WDA_node, RADA_node, REA_node, WADB_node, WEB_node, WDB_node, RADB_node, REB_node)
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--TSPEC: A note about sram initial values and rom mode:
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-- If the user does not provide any values, ... default 0
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-- for all ram locations in JECED
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--QQ 7_17 variable v_MEM : std_logic_vector(ARRAY_SIZE - 1 downto 0) := ( others => '0' );
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variable v_MEM : std_logic_vector(ARRAY_SIZE*WDATA_WIDTH_A + WDATA_WIDTH_A - 1 downto 0) := ( others => '0' );
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variable v_INI_DONE : boolean := FALSE;
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variable v_WADDR_A : integer;
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variable v_RADDR_A : integer;
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variable v_WADDR_B : integer;
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variable v_RADDR_B : integer;
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variable v_WADDRA_Valid_Flag : boolean := TRUE;
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variable v_WADDRB_Valid_Flag : boolean := TRUE;
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variable v_RADDRA_Valid_Flag : boolean := TRUE;
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variable v_RADDRB_Valid_Flag : boolean := TRUE;
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begin -- Process
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if( MEM_INIT_FLAG = 1 and v_INI_DONE = FALSE) THEN
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READ_MEM_INIT_FILE(MEM_INIT_FILE, v_MEM);
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v_INI_DONE := TRUE;
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end if;
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-- Address Check
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v_WADDRA_Valid_Flag := Valid_Address(WADA_node);
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v_WADDRB_Valid_Flag := Valid_Address(WADB_node);
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v_RADDRA_Valid_Flag := Valid_Address(RADA_node);
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v_RADDRB_Valid_Flag := Valid_Address(RADB_node);
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if ( v_WADDRA_Valid_Flag = TRUE ) then
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v_WADDR_A := CONV_INTEGER(WADA_node);
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-- else
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-- assert (Now = 0 ps)
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-- report "Write AddressA of Port contains invalid bit!"
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-- severity warning;
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end if;
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if (v_WADDRB_Valid_Flag = TRUE ) then
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v_WADDR_B := CONV_INTEGER(WADB_node);
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-- else
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-- assert (Now = 0 ps)
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-- report "Write AddressB of Port contains invalid bit!"
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-- severity warning;
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end if;
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if (v_RADDRA_Valid_Flag = TRUE ) then
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v_RADDR_A := CONV_INTEGER(RADA_node);
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-- else
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-- assert (Now = 0 ps)
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-- report "Read AddressA of Port contains invalid bit!"
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-- severity warning;
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end if;
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if (v_RADDRB_Valid_Flag = TRUE ) then
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v_RADDR_B := CONV_INTEGER(RADB_node);
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-- else
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-- assert (Now = 0 ps)
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-- report "Read AddressB of Port contains invalid bit!"
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-- severity warning;
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end if;
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-- CHECK Operation
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if (WEA = '1' and WEB = '1' and
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not(
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(v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) < (v_WADDR_B*WDATA_WIDTH_B)
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or
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(v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) < (v_WADDR_A*WDATA_WIDTH_A)
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)
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) then
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assert false
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report " Write collision! Writing in the same memory location using Port A and Port B will cause the memory content invalid."
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severity warning;
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end if;
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-- MEM Operation
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if (WEA_node = '1') then
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v_MEM((v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) downto (v_WADDR_A*WDATA_WIDTH_A)) := WDA_node;
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end if;
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if (WEB_node = '1') then
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v_MEM((v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) downto (v_WADDR_B*WDATA_WIDTH_B)) := WDB_node;
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end if;
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if (REA_node = '1') then
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RDA_node <= v_MEM((v_RADDR_A*RDATA_WIDTH_A + RDATA_WIDTH_A -1) downto (v_RADDR_A*RDATA_WIDTH_A));
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-- else
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-- RDA_node <= ( others => 'X');
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end if;
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if (REB_node = '1') then
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RDB_node <= v_MEM((v_RADDR_B*RDATA_WIDTH_B + RDATA_WIDTH_B -1) downto (v_RADDR_B*RDATA_WIDTH_B));
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-- else
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-- RDB_node <= ( others => 'X');
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end if;
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end process KERNEL_BEHAV;
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end LATTICE_BEHAV;
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-- ************************************************************************
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--
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-- Block Memory: Behavioral Model
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-- The kernel of other RAM applications
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-- ************************************************************************
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--
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-- Filename: SC_BLOCK_RAM_L.vhd
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-- Description: BRAM behavioral model.
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-- ************************************************************************
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library std;
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use std.textio.all;
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library ieee, std;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_unsigned.all;
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use std.textio.all;
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336 |
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337 |
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-- ************************************************************************
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338 |
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-- Entity definition
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339 |
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-- "generic" members
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340 |
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-- ************************************************************************
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341 |
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342 |
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entity SC_BRAM_16K_L_SYNC is
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343 |
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344 |
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generic (
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345 |
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WADDR_WIDTH_A : integer := 14;
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347 |
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RADDR_WIDTH_A : integer := 12;
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348 |
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WADDR_WIDTH_B : integer := 14;
|
349 |
|
|
RADDR_WIDTH_B : integer := 12;
|
350 |
|
|
WDATA_WIDTH_A : integer := 1;
|
351 |
|
|
RDATA_WIDTH_A : integer := 4;
|
352 |
|
|
WDATA_WIDTH_B : integer := 1;
|
353 |
|
|
RDATA_WIDTH_B : integer := 4;
|
354 |
|
|
ARRAY_SIZE : integer := 262144;
|
355 |
|
|
MEM_INIT_FLAG : integer := 0;
|
356 |
|
|
MEM_INIT_FILE : string := ""
|
357 |
|
|
|
358 |
|
|
);
|
359 |
|
|
|
360 |
|
|
port (
|
361 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
362 |
|
|
WEA : in STD_LOGIC ;
|
363 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
364 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
365 |
|
|
REA : in STD_LOGIC ;
|
366 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
367 |
|
|
|
368 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
369 |
|
|
WEB : in STD_LOGIC;
|
370 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
371 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
372 |
|
|
REB : in STD_LOGIC;
|
373 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0);
|
374 |
|
|
WCLK : in STD_LOGIC;
|
375 |
|
|
RCLK : in STD_LOGIC
|
376 |
|
|
);
|
377 |
|
|
|
378 |
|
|
end SC_BRAM_16K_L_SYNC;
|
379 |
|
|
|
380 |
|
|
-- ************************************************************************
|
381 |
|
|
-- Architecture
|
382 |
|
|
-- ************************************************************************
|
383 |
|
|
|
384 |
|
|
architecture LATTICE_BEHAV of SC_BRAM_16K_L_SYNC is
|
385 |
|
|
|
386 |
|
|
procedure READ_MEM_INIT_FILE(
|
387 |
|
|
f_name : IN STRING;
|
388 |
|
|
v_MEM : OUT STD_LOGIC_VECTOR
|
389 |
|
|
) IS
|
390 |
|
|
|
391 |
|
|
file f_INIT_FILE : TEXT is MEM_INIT_FILE;
|
392 |
|
|
variable v_WORD : line;
|
393 |
|
|
variable v_GOODFLAG : boolean;
|
394 |
|
|
variable v_WORD_BIT : string (WDATA_WIDTH_A downto 1) ;
|
395 |
|
|
variable v_CHAR : character;
|
396 |
|
|
variable v_OFFSET : integer := 0;
|
397 |
|
|
variable v_LINE : integer := 0;
|
398 |
|
|
|
399 |
|
|
begin
|
400 |
|
|
|
401 |
|
|
while ( not(endfile(f_INIT_FILE)) and (v_LINE < 2**WADDR_WIDTH_A)) loop
|
402 |
|
|
|
403 |
|
|
readline(f_INIT_FILE, v_WORD);
|
404 |
|
|
read(v_WORD, v_WORD_BIT, v_GOODFLAG);
|
405 |
|
|
|
406 |
|
|
for k in 0 to WDATA_WIDTH_A - 1 loop
|
407 |
|
|
v_CHAR := v_WORD_BIT (k + 1);
|
408 |
|
|
if (v_CHAR = '1') then
|
409 |
|
|
v_MEM(v_OFFSET + k) := '1';
|
410 |
|
|
|
411 |
|
|
elsif (v_CHAR = '0') then
|
412 |
|
|
v_MEM(v_OFFSET + k) := '0';
|
413 |
|
|
|
414 |
|
|
-- else
|
415 |
|
|
-- v_MEM(v_OFFSET + k) := 'X';
|
416 |
|
|
|
417 |
|
|
end if;
|
418 |
|
|
end loop;
|
419 |
|
|
|
420 |
|
|
v_LINE := v_LINE + 1;
|
421 |
|
|
v_OFFSET := v_OFFSET + WDATA_WIDTH_A;
|
422 |
|
|
|
423 |
|
|
end loop;
|
424 |
|
|
|
425 |
|
|
end READ_MEM_INIT_FILE;
|
426 |
|
|
--------------------------------------------------------------------------
|
427 |
|
|
-- Function: Valid_Address
|
428 |
|
|
-- Description:
|
429 |
|
|
--------------------------------------------------------------------------
|
430 |
|
|
function Valid_Address (
|
431 |
|
|
IN_ADDR : in std_logic_vector
|
432 |
|
|
) return boolean is
|
433 |
|
|
|
434 |
|
|
variable v_Valid_Flag : boolean := TRUE;
|
435 |
|
|
|
436 |
|
|
begin
|
437 |
|
|
|
438 |
|
|
for i in IN_ADDR'high downto IN_ADDR'low loop
|
439 |
|
|
if (IN_ADDR(i) /= '0' and IN_ADDR(i) /= '1') then
|
440 |
|
|
v_Valid_Flag := FALSE;
|
441 |
|
|
end if;
|
442 |
|
|
end loop;
|
443 |
|
|
|
444 |
|
|
return v_Valid_Flag;
|
445 |
|
|
end Valid_Address;
|
446 |
|
|
|
447 |
|
|
--------------------------------------------------------------------------
|
448 |
|
|
-- Signal Declaration
|
449 |
|
|
--------------------------------------------------------------------------
|
450 |
|
|
|
451 |
|
|
--------- Local signals used to propagate input wire delay ---------------
|
452 |
|
|
|
453 |
|
|
signal WADA_node : std_logic_vector( WADDR_WIDTH_A -1 downto 0) := (others => '0');
|
454 |
|
|
signal WEA_node : std_logic := 'X';
|
455 |
|
|
signal WDA_node : std_logic_vector( WDATA_WIDTH_A -1 downto 0) := (others => 'X');
|
456 |
|
|
signal RADA_node : std_logic_vector( RADDR_WIDTH_A -1 downto 0) := (others => '0');
|
457 |
|
|
signal REA_node : std_logic := 'X';
|
458 |
|
|
signal RDA_node : std_logic_vector( RDATA_WIDTH_A -1 downto 0) := (others => 'X');
|
459 |
|
|
|
460 |
|
|
signal WADB_node : std_logic_vector( WADDR_WIDTH_B -1 downto 0) := (others => '0');
|
461 |
|
|
signal WEB_node : std_logic := 'X';
|
462 |
|
|
signal WDB_node : std_logic_vector( WDATA_WIDTH_B -1 downto 0) := (others => 'X');
|
463 |
|
|
signal RADB_node : std_logic_vector( RADDR_WIDTH_B -1 downto 0) := (others => '0');
|
464 |
|
|
signal REB_node : std_logic := 'X';
|
465 |
|
|
signal RDB_node : std_logic_vector( RDATA_WIDTH_B -1 downto 0) := (others => 'X');
|
466 |
|
|
signal WCLK_node : std_logic := 'X';
|
467 |
|
|
signal RCLK_node : std_logic := 'X';
|
468 |
|
|
-- architecture
|
469 |
|
|
begin
|
470 |
|
|
|
471 |
|
|
WADA_node <= WADA;
|
472 |
|
|
WEA_node <= WEA;
|
473 |
|
|
WDA_node <= WDA;
|
474 |
|
|
RADA_node <= RADA;
|
475 |
|
|
REA_node <= REA;
|
476 |
|
|
RDA <= RDA_node;
|
477 |
|
|
|
478 |
|
|
WADB_node <= WADB;
|
479 |
|
|
WEB_node <= WEB;
|
480 |
|
|
WDB_node <= WDB;
|
481 |
|
|
RADB_node <= RADB;
|
482 |
|
|
REB_node <= REB;
|
483 |
|
|
RDB <= RDB_node;
|
484 |
|
|
|
485 |
|
|
WCLK_node <= WCLK;
|
486 |
|
|
RCLK_node <= RCLK;
|
487 |
|
|
|
488 |
|
|
-----------------------------------------
|
489 |
|
|
--------- Behavior process -------------
|
490 |
|
|
-----------------------------------------
|
491 |
|
|
|
492 |
|
|
|
493 |
|
|
--KERNEL_BEHAV : process( WADA_node, WEA_node, WDA_node, RADA_node, REA_node, WADB_node, WEB_node, WDB_node, RADB_node, REB_node)
|
494 |
|
|
KERNEL_BEHAV : process( WCLK_node, RCLK_node)
|
495 |
|
|
|
496 |
|
|
--TSPEC: A note about sram initial values and rom mode:
|
497 |
|
|
-- If the user does not provide any values, ... default 0
|
498 |
|
|
-- for all ram locations in JECED
|
499 |
|
|
variable v_MEM : std_logic_vector(ARRAY_SIZE*WDATA_WIDTH_A - 1 downto 0) := ( others => '0' );
|
500 |
|
|
variable v_INI_DONE : boolean := FALSE;
|
501 |
|
|
variable v_WADDR_A : integer;
|
502 |
|
|
variable v_RADDR_A : integer;
|
503 |
|
|
variable v_WADDR_B : integer;
|
504 |
|
|
variable v_RADDR_B : integer;
|
505 |
|
|
|
506 |
|
|
variable v_WADDRA_Valid_Flag : boolean := TRUE;
|
507 |
|
|
variable v_WADDRB_Valid_Flag : boolean := TRUE;
|
508 |
|
|
variable v_RADDRA_Valid_Flag : boolean := TRUE;
|
509 |
|
|
variable v_RADDRB_Valid_Flag : boolean := TRUE;
|
510 |
|
|
|
511 |
|
|
begin -- Process
|
512 |
|
|
|
513 |
|
|
if( MEM_INIT_FLAG = 1 and v_INI_DONE = FALSE) THEN
|
514 |
|
|
READ_MEM_INIT_FILE(MEM_INIT_FILE, v_MEM);
|
515 |
|
|
v_INI_DONE := TRUE;
|
516 |
|
|
end if;
|
517 |
|
|
|
518 |
|
|
-- Address Check
|
519 |
|
|
v_WADDRA_Valid_Flag := Valid_Address(WADA_node);
|
520 |
|
|
v_WADDRB_Valid_Flag := Valid_Address(WADB_node);
|
521 |
|
|
v_RADDRA_Valid_Flag := Valid_Address(RADA_node);
|
522 |
|
|
v_RADDRB_Valid_Flag := Valid_Address(RADB_node);
|
523 |
|
|
|
524 |
|
|
if ( v_WADDRA_Valid_Flag = TRUE ) then
|
525 |
|
|
v_WADDR_A := CONV_INTEGER(WADA_node);
|
526 |
|
|
-- else
|
527 |
|
|
-- assert (Now = 0 ps)
|
528 |
|
|
-- report "Write AddressA of Port contains invalid bit!"
|
529 |
|
|
-- severity warning;
|
530 |
|
|
end if;
|
531 |
|
|
|
532 |
|
|
if (v_WADDRB_Valid_Flag = TRUE ) then
|
533 |
|
|
v_WADDR_B := CONV_INTEGER(WADB_node);
|
534 |
|
|
else
|
535 |
|
|
-- assert (Now = 0 ps)
|
536 |
|
|
-- report "Write AddressB of Port contains invalid bit!"
|
537 |
|
|
-- severity warning;
|
538 |
|
|
end if;
|
539 |
|
|
|
540 |
|
|
if (v_RADDRA_Valid_Flag = TRUE ) then
|
541 |
|
|
v_RADDR_A := CONV_INTEGER(RADA_node);
|
542 |
|
|
-- else
|
543 |
|
|
-- assert (Now = 0 ps)
|
544 |
|
|
-- report "Read AddressA of Port contains invalid bit!"
|
545 |
|
|
-- severity warning;
|
546 |
|
|
end if;
|
547 |
|
|
|
548 |
|
|
if (v_RADDRB_Valid_Flag = TRUE ) then
|
549 |
|
|
v_RADDR_B := CONV_INTEGER(RADB_node);
|
550 |
|
|
-- else
|
551 |
|
|
-- assert (Now = 0 ps)
|
552 |
|
|
-- report "Read AddressB of Port contains invalid bit!"
|
553 |
|
|
-- severity warning;
|
554 |
|
|
end if;
|
555 |
|
|
|
556 |
|
|
-- CHECK Operation
|
557 |
|
|
if (WEA = '1' and WEB = '1' and
|
558 |
|
|
not(
|
559 |
|
|
(v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) < (v_WADDR_B*WDATA_WIDTH_B)
|
560 |
|
|
or
|
561 |
|
|
(v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) < (v_WADDR_A*WDATA_WIDTH_A)
|
562 |
|
|
)
|
563 |
|
|
) then
|
564 |
|
|
assert false
|
565 |
|
|
report " Write collision! Writing in the same memory location using Port A and Port B will cause the memory content invalid."
|
566 |
|
|
severity warning;
|
567 |
|
|
end if;
|
568 |
|
|
|
569 |
|
|
-- MEM Operation
|
570 |
|
|
if (WEA_node = '1' and WCLK_node'event and WCLK_node = '1' ) then
|
571 |
|
|
v_MEM((v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) downto (v_WADDR_A*WDATA_WIDTH_A)) := WDA_node;
|
572 |
|
|
end if;
|
573 |
|
|
|
574 |
|
|
if (WEB_node = '1' and WCLK_node'event and WCLK_node = '1') then
|
575 |
|
|
v_MEM((v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) downto (v_WADDR_B*WDATA_WIDTH_B)) := WDB_node;
|
576 |
|
|
end if;
|
577 |
|
|
|
578 |
|
|
if (REA_node = '1' and RCLK_node'event and RCLK_node = '1') then
|
579 |
|
|
RDA_node <= v_MEM((v_RADDR_A*RDATA_WIDTH_A + RDATA_WIDTH_A -1) downto (v_RADDR_A*RDATA_WIDTH_A));
|
580 |
|
|
-- else
|
581 |
|
|
-- RDA_node <= ( others => 'X');
|
582 |
|
|
end if;
|
583 |
|
|
|
584 |
|
|
if (REB_node = '1' and RCLK_node'event and RCLK_node = '1') then
|
585 |
|
|
RDB_node <= v_MEM((v_RADDR_B*RDATA_WIDTH_B + RDATA_WIDTH_B -1) downto (v_RADDR_B*RDATA_WIDTH_B));
|
586 |
|
|
-- else
|
587 |
|
|
-- RDB_node <= ( others => 'X');
|
588 |
|
|
end if;
|
589 |
|
|
|
590 |
|
|
end process KERNEL_BEHAV;
|
591 |
|
|
|
592 |
|
|
end LATTICE_BEHAV;
|
593 |
|
|
|
594 |
|
|
|
595 |
|
|
|
596 |
|
|
library std;
|
597 |
|
|
use std.textio.all;
|
598 |
|
|
|
599 |
|
|
library ieee, std;
|
600 |
|
|
use ieee.std_logic_1164.all;
|
601 |
|
|
use ieee.std_logic_unsigned.all;
|
602 |
|
|
use std.textio.all;
|
603 |
|
|
|
604 |
|
|
|
605 |
|
|
-- ************************************************************************
|
606 |
|
|
-- Entity definition
|
607 |
|
|
-- "generic" members
|
608 |
|
|
-- ************************************************************************
|
609 |
|
|
|
610 |
|
|
entity SC_BRAM_PDP_16K_L is
|
611 |
|
|
|
612 |
|
|
generic (
|
613 |
|
|
WADDR_WIDTH_A : integer := 14;
|
614 |
|
|
RADDR_WIDTH_A : integer := 12;
|
615 |
|
|
WADDR_WIDTH_B : integer := 14;
|
616 |
|
|
RADDR_WIDTH_B : integer := 12;
|
617 |
|
|
WDATA_WIDTH_A : integer := 1;
|
618 |
|
|
RDATA_WIDTH_A : integer := 4;
|
619 |
|
|
WDATA_WIDTH_B : integer := 1;
|
620 |
|
|
RDATA_WIDTH_B : integer := 4;
|
621 |
|
|
ARRAY_SIZE : integer := 262144;
|
622 |
|
|
MEM_INIT_FLAG : integer := 0;
|
623 |
|
|
MEM_INIT_FILE : string := ""
|
624 |
|
|
|
625 |
|
|
);
|
626 |
|
|
|
627 |
|
|
port (
|
628 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
629 |
|
|
WEA : in STD_LOGIC ;
|
630 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
631 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
632 |
|
|
REA : in STD_LOGIC ;
|
633 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
634 |
|
|
|
635 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
636 |
|
|
WEB : in STD_LOGIC;
|
637 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
638 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
639 |
|
|
REB : in STD_LOGIC;
|
640 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
|
641 |
|
|
);
|
642 |
|
|
|
643 |
|
|
end SC_BRAM_PDP_16K_L;
|
644 |
|
|
|
645 |
|
|
-- ************************************************************************
|
646 |
|
|
-- Architecture
|
647 |
|
|
-- ************************************************************************
|
648 |
|
|
|
649 |
|
|
architecture LATTICE_BEHAV of SC_BRAM_PDP_16K_L is
|
650 |
|
|
|
651 |
|
|
procedure READ_MEM_INIT_FILE(
|
652 |
|
|
f_name : IN STRING;
|
653 |
|
|
v_MEM : OUT STD_LOGIC_VECTOR
|
654 |
|
|
) IS
|
655 |
|
|
|
656 |
|
|
file f_INIT_FILE : TEXT is MEM_INIT_FILE;
|
657 |
|
|
variable v_WORD : line;
|
658 |
|
|
variable v_GOODFLAG : boolean;
|
659 |
|
|
variable v_WORD_BIT : string (WDATA_WIDTH_A downto 1) ;
|
660 |
|
|
variable v_CHAR : character;
|
661 |
|
|
variable v_OFFSET : integer := 0;
|
662 |
|
|
variable v_LINE : integer := 0;
|
663 |
|
|
|
664 |
|
|
begin
|
665 |
|
|
|
666 |
|
|
while ( not(endfile(f_INIT_FILE)) and (v_LINE < 2**WADDR_WIDTH_A)) loop
|
667 |
|
|
|
668 |
|
|
readline(f_INIT_FILE, v_WORD);
|
669 |
|
|
read(v_WORD, v_WORD_BIT, v_GOODFLAG);
|
670 |
|
|
|
671 |
|
|
for k in 0 to WDATA_WIDTH_A - 1 loop
|
672 |
|
|
v_CHAR := v_WORD_BIT (k + 1);
|
673 |
|
|
if (v_CHAR = '1') then
|
674 |
|
|
v_MEM(v_OFFSET + k) := '1';
|
675 |
|
|
|
676 |
|
|
elsif (v_CHAR = '0') then
|
677 |
|
|
v_MEM(v_OFFSET + k) := '0';
|
678 |
|
|
|
679 |
|
|
-- else
|
680 |
|
|
-- v_MEM(v_OFFSET + k) := 'X';
|
681 |
|
|
|
682 |
|
|
end if;
|
683 |
|
|
end loop;
|
684 |
|
|
|
685 |
|
|
v_LINE := v_LINE + 1;
|
686 |
|
|
v_OFFSET := v_OFFSET + WDATA_WIDTH_A;
|
687 |
|
|
|
688 |
|
|
end loop;
|
689 |
|
|
|
690 |
|
|
end READ_MEM_INIT_FILE;
|
691 |
|
|
--------------------------------------------------------------------------
|
692 |
|
|
-- Function: Valid_Address
|
693 |
|
|
-- Description:
|
694 |
|
|
--------------------------------------------------------------------------
|
695 |
|
|
function Valid_Address (
|
696 |
|
|
IN_ADDR : in std_logic_vector
|
697 |
|
|
) return boolean is
|
698 |
|
|
|
699 |
|
|
variable v_Valid_Flag : boolean := TRUE;
|
700 |
|
|
|
701 |
|
|
begin
|
702 |
|
|
|
703 |
|
|
for i in IN_ADDR'high downto IN_ADDR'low loop
|
704 |
|
|
if (IN_ADDR(i) /= '0' and IN_ADDR(i) /= '1') then
|
705 |
|
|
v_Valid_Flag := FALSE;
|
706 |
|
|
end if;
|
707 |
|
|
end loop;
|
708 |
|
|
|
709 |
|
|
return v_Valid_Flag;
|
710 |
|
|
end Valid_Address;
|
711 |
|
|
|
712 |
|
|
--------------------------------------------------------------------------
|
713 |
|
|
-- Signal Declaration
|
714 |
|
|
--------------------------------------------------------------------------
|
715 |
|
|
|
716 |
|
|
--------- Local signals used to propagate input wire delay ---------------
|
717 |
|
|
|
718 |
|
|
signal WADA_node : std_logic_vector( WADDR_WIDTH_A -1 downto 0) := (others => '0');
|
719 |
|
|
signal WEA_node : std_logic := 'X';
|
720 |
|
|
signal WDA_node : std_logic_vector( WDATA_WIDTH_A -1 downto 0) := (others => 'X');
|
721 |
|
|
signal RADA_node : std_logic_vector( RADDR_WIDTH_A -1 downto 0) := (others => '0');
|
722 |
|
|
signal REA_node : std_logic := 'X';
|
723 |
|
|
signal RDA_node : std_logic_vector( RDATA_WIDTH_A -1 downto 0) := (others => 'X');
|
724 |
|
|
|
725 |
|
|
signal WADB_node : std_logic_vector( WADDR_WIDTH_B -1 downto 0) := (others => '0');
|
726 |
|
|
signal WEB_node : std_logic := 'X';
|
727 |
|
|
signal WDB_node : std_logic_vector( WDATA_WIDTH_B -1 downto 0) := (others => 'X');
|
728 |
|
|
signal RADB_node : std_logic_vector( RADDR_WIDTH_B -1 downto 0) := (others => '0');
|
729 |
|
|
signal REB_node : std_logic := 'X';
|
730 |
|
|
signal RDB_node : std_logic_vector( RDATA_WIDTH_B -1 downto 0) := (others => 'X');
|
731 |
|
|
|
732 |
|
|
-- architecture
|
733 |
|
|
begin
|
734 |
|
|
|
735 |
|
|
WADA_node <= WADA;
|
736 |
|
|
WEA_node <= WEA;
|
737 |
|
|
WDA_node <= WDA;
|
738 |
|
|
RADA_node <= RADA;
|
739 |
|
|
REA_node <= REA;
|
740 |
|
|
RDA <= RDA_node;
|
741 |
|
|
|
742 |
|
|
WADB_node <= WADB;
|
743 |
|
|
WEB_node <= WEB;
|
744 |
|
|
WDB_node <= WDB;
|
745 |
|
|
RADB_node <= RADB;
|
746 |
|
|
REB_node <= REB;
|
747 |
|
|
RDB <= RDB_node;
|
748 |
|
|
|
749 |
|
|
-----------------------------------------
|
750 |
|
|
--------- Behavior process -------------
|
751 |
|
|
-----------------------------------------
|
752 |
|
|
|
753 |
|
|
KERNEL_BEHAV : process( WADA_node, WEA_node, WDA_node, RADA_node, REA_node, WADB_node, WEB_node, WDB_node, RADB_node, REB_node)
|
754 |
|
|
|
755 |
|
|
|
756 |
|
|
--TSPEC: A note about sram initial values and rom mode:
|
757 |
|
|
-- If the user does not provide any values, ... default 0
|
758 |
|
|
-- for all ram locations in JECED
|
759 |
|
|
|
760 |
|
|
variable v_MEM : std_logic_vector(ARRAY_SIZE - 1 downto 0) := ( others => '0' );
|
761 |
|
|
|
762 |
|
|
variable v_INI_DONE : boolean := FALSE;
|
763 |
|
|
variable v_WADDR_A : integer;
|
764 |
|
|
variable v_RADDR_A : integer;
|
765 |
|
|
variable v_WADDR_B : integer;
|
766 |
|
|
variable v_RADDR_B : integer;
|
767 |
|
|
|
768 |
|
|
variable v_WADDRA_Valid_Flag : boolean := TRUE;
|
769 |
|
|
variable v_WADDRB_Valid_Flag : boolean := TRUE;
|
770 |
|
|
variable v_RADDRA_Valid_Flag : boolean := TRUE;
|
771 |
|
|
variable v_RADDRB_Valid_Flag : boolean := TRUE;
|
772 |
|
|
|
773 |
|
|
begin -- Process
|
774 |
|
|
|
775 |
|
|
if( MEM_INIT_FLAG = 1 and v_INI_DONE = FALSE) THEN
|
776 |
|
|
READ_MEM_INIT_FILE(MEM_INIT_FILE, v_MEM);
|
777 |
|
|
v_INI_DONE := TRUE;
|
778 |
|
|
end if;
|
779 |
|
|
|
780 |
|
|
-- Address Check
|
781 |
|
|
v_WADDRA_Valid_Flag := Valid_Address(WADA_node);
|
782 |
|
|
v_WADDRB_Valid_Flag := Valid_Address(WADB_node);
|
783 |
|
|
v_RADDRA_Valid_Flag := Valid_Address(RADA_node);
|
784 |
|
|
v_RADDRB_Valid_Flag := Valid_Address(RADB_node);
|
785 |
|
|
|
786 |
|
|
if ( v_WADDRA_Valid_Flag = TRUE ) then
|
787 |
|
|
v_WADDR_A := CONV_INTEGER(WADA_node);
|
788 |
|
|
-- else
|
789 |
|
|
-- assert (Now = 0 ps)
|
790 |
|
|
-- report "Write AddressA of Port contains invalid bit!"
|
791 |
|
|
-- severity warning;
|
792 |
|
|
end if;
|
793 |
|
|
|
794 |
|
|
if (v_WADDRB_Valid_Flag = TRUE ) then
|
795 |
|
|
v_WADDR_B := CONV_INTEGER(WADB_node);
|
796 |
|
|
-- else
|
797 |
|
|
-- assert (Now = 0 ps)
|
798 |
|
|
-- report "Write AddressB of Port contains invalid bit!"
|
799 |
|
|
-- severity warning;
|
800 |
|
|
end if;
|
801 |
|
|
|
802 |
|
|
if (v_RADDRA_Valid_Flag = TRUE ) then
|
803 |
|
|
v_RADDR_A := CONV_INTEGER(RADA_node);
|
804 |
|
|
-- else
|
805 |
|
|
-- assert (Now = 0 ps)
|
806 |
|
|
-- report "Read AddressA of Port contains invalid bit!"
|
807 |
|
|
-- severity warning;
|
808 |
|
|
end if;
|
809 |
|
|
|
810 |
|
|
if (v_RADDRB_Valid_Flag = TRUE ) then
|
811 |
|
|
v_RADDR_B := CONV_INTEGER(RADB_node);
|
812 |
|
|
-- else
|
813 |
|
|
-- assert (Now = 0 ps)
|
814 |
|
|
-- report "Read AddressB of Port contains invalid bit!"
|
815 |
|
|
-- severity warning;
|
816 |
|
|
end if;
|
817 |
|
|
|
818 |
|
|
-- CHECK Operation
|
819 |
|
|
if (WEA = '1' and WEB = '1' and
|
820 |
|
|
not(
|
821 |
|
|
(v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) < (v_WADDR_B*WDATA_WIDTH_B)
|
822 |
|
|
or
|
823 |
|
|
(v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) < (v_WADDR_A*WDATA_WIDTH_A)
|
824 |
|
|
)
|
825 |
|
|
) then
|
826 |
|
|
assert false
|
827 |
|
|
report " Write collision! Writing in the same memory location using Port A and Port B will cause the memory content invalid."
|
828 |
|
|
severity warning;
|
829 |
|
|
end if;
|
830 |
|
|
|
831 |
|
|
-- MEM Operation
|
832 |
|
|
if (WEA_node = '1') then
|
833 |
|
|
v_MEM((v_WADDR_A*WDATA_WIDTH_A + WDATA_WIDTH_A -1) downto (v_WADDR_A*WDATA_WIDTH_A)) := WDA_node;
|
834 |
|
|
end if;
|
835 |
|
|
|
836 |
|
|
if (WEB_node = '1') then
|
837 |
|
|
v_MEM((v_WADDR_B*WDATA_WIDTH_B + WDATA_WIDTH_B -1) downto (v_WADDR_B*WDATA_WIDTH_B)) := WDB_node;
|
838 |
|
|
end if;
|
839 |
|
|
|
840 |
|
|
if (REA_node = '1') then
|
841 |
|
|
RDA_node <= v_MEM((v_RADDR_A*RDATA_WIDTH_A + RDATA_WIDTH_A -1) downto (v_RADDR_A*RDATA_WIDTH_A));
|
842 |
|
|
-- else
|
843 |
|
|
-- RDA_node <= ( others => 'X');
|
844 |
|
|
end if;
|
845 |
|
|
|
846 |
|
|
if (REB_node = '1') then
|
847 |
|
|
RDB_node <= v_MEM((v_RADDR_B*RDATA_WIDTH_B + RDATA_WIDTH_B -1) downto (v_RADDR_B*RDATA_WIDTH_B));
|
848 |
|
|
-- else
|
849 |
|
|
-- RDB_node <= ( others => 'X');
|
850 |
|
|
end if;
|
851 |
|
|
|
852 |
|
|
end process KERNEL_BEHAV;
|
853 |
|
|
|
854 |
|
|
end LATTICE_BEHAV;
|
855 |
|
|
|
856 |
|
|
|
857 |
|
|
|
858 |
|
|
---************* SC_FIFO_L **************************
|
859 |
|
|
library ieee;
|
860 |
|
|
use ieee.std_logic_1164.all;
|
861 |
|
|
--use ieee.std_logic_arith.all;
|
862 |
|
|
use ieee.std_logic_unsigned.all;
|
863 |
|
|
|
864 |
|
|
entity READ_POINTER_CTRL is
|
865 |
|
|
generic (
|
866 |
|
|
RPOINTER_WIDTH : integer := 9
|
867 |
|
|
);
|
868 |
|
|
port (
|
869 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(RPOINTER_WIDTH -1 downto 0);--QQ
|
870 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
871 |
|
|
RESET_RP : in STD_LOGIC ;
|
872 |
|
|
READ_EN : in STD_LOGIC ;
|
873 |
|
|
READ_CLK : in STD_LOGIC ;
|
874 |
|
|
EMPTY_FLAG : in STD_LOGIC ;
|
875 |
|
|
READ_POINTER : out STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0)
|
876 |
|
|
);
|
877 |
|
|
end READ_POINTER_CTRL;
|
878 |
|
|
|
879 |
|
|
architecture LATTICE_BEHAV of READ_POINTER_CTRL is
|
880 |
|
|
|
881 |
|
|
signal s_READ_POINTER : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0) := (others => '0');
|
882 |
|
|
|
883 |
|
|
begin
|
884 |
|
|
|
885 |
|
|
READ_POINTER <= s_READ_POINTER;
|
886 |
|
|
|
887 |
|
|
process (GLOBAL_RST, RESET_RP, READ_EN, READ_CLK)
|
888 |
|
|
|
889 |
|
|
variable v_READ_POINTER: STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0');
|
890 |
|
|
|
891 |
|
|
begin
|
892 |
|
|
|
893 |
|
|
if GLOBAL_RST = '1' or RESET_RP = '1' then
|
894 |
|
|
|
895 |
|
|
s_READ_POINTER <= (others => '0');
|
896 |
|
|
|
897 |
|
|
elsif (READ_CLK'EVENT and READ_CLK = '1') then
|
898 |
|
|
if (READ_EN = '1' and EMPTY_FLAG = '1') then
|
899 |
|
|
v_READ_POINTER := s_READ_POINTER + '1';
|
900 |
|
|
else
|
901 |
|
|
v_READ_POINTER := s_READ_POINTER;
|
902 |
|
|
end if;
|
903 |
|
|
|
904 |
|
|
if (v_READ_POINTER = TERMINAL_COUNT + 1) then
|
905 |
|
|
s_READ_POINTER <= (others => '0');
|
906 |
|
|
else
|
907 |
|
|
s_READ_POINTER <= v_READ_POINTER;
|
908 |
|
|
end if;
|
909 |
|
|
end if;
|
910 |
|
|
|
911 |
|
|
end process;
|
912 |
|
|
end LATTICE_BEHAV;
|
913 |
|
|
|
914 |
|
|
-- ************************************************************************
|
915 |
|
|
-- FIFO COMPONENTS WRITE_POINTER_CTRL
|
916 |
|
|
-- ************************************************************************
|
917 |
|
|
library ieee;
|
918 |
|
|
use ieee.std_logic_1164.all;
|
919 |
|
|
--use IEEE.std_logic_arith.all;
|
920 |
|
|
use IEEE.std_logic_unsigned.all;
|
921 |
|
|
|
922 |
|
|
entity WRITE_POINTER_CTRL is
|
923 |
|
|
generic (
|
924 |
|
|
WPOINTER_WIDTH : integer := 9;
|
925 |
|
|
WDATA_WIDTH : integer := 32
|
926 |
|
|
);
|
927 |
|
|
port (
|
928 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0);--QQ
|
929 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
930 |
|
|
WRITE_EN : in STD_LOGIC ;
|
931 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
932 |
|
|
FULL_FLAG : in STD_LOGIC ;
|
933 |
|
|
WRITE_POINTER : out STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0)
|
934 |
|
|
|
935 |
|
|
);
|
936 |
|
|
end WRITE_POINTER_CTRL;
|
937 |
|
|
|
938 |
|
|
architecture LATTICE_BEHAV of WRITE_POINTER_CTRL is
|
939 |
|
|
|
940 |
|
|
signal s_WRITE_POINTER : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0):= (others => '0');
|
941 |
|
|
|
942 |
|
|
begin
|
943 |
|
|
|
944 |
|
|
WRITE_POINTER <= s_WRITE_POINTER;
|
945 |
|
|
|
946 |
|
|
process (GLOBAL_RST, WRITE_EN, WRITE_CLK)
|
947 |
|
|
|
948 |
|
|
variable v_WRITE_POINTER: STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0):= (others => '0');
|
949 |
|
|
|
950 |
|
|
begin
|
951 |
|
|
if GLOBAL_RST = '1' then
|
952 |
|
|
s_WRITE_POINTER <= (others => '0');
|
953 |
|
|
|
954 |
|
|
elsif (WRITE_CLK'EVENT and WRITE_CLK = '1') then
|
955 |
|
|
if (WRITE_EN = '1' and FULL_FLAG /= '1') then
|
956 |
|
|
v_WRITE_POINTER := s_WRITE_POINTER + '1';
|
957 |
|
|
else
|
958 |
|
|
v_WRITE_POINTER := s_WRITE_POINTER ;
|
959 |
|
|
end if;
|
960 |
|
|
|
961 |
|
|
if (v_WRITE_POINTER = TERMINAL_COUNT + 1) then
|
962 |
|
|
s_WRITE_POINTER <= (others => '0');
|
963 |
|
|
else
|
964 |
|
|
s_WRITE_POINTER <= v_WRITE_POINTER;
|
965 |
|
|
end if;
|
966 |
|
|
end if;
|
967 |
|
|
end process;
|
968 |
|
|
end LATTICE_BEHAV;
|
969 |
|
|
|
970 |
|
|
-- ************************************************************************
|
971 |
|
|
-- FIFO COMPONENTS FLAG LOGIC
|
972 |
|
|
-- ************************************************************************
|
973 |
|
|
library ieee;
|
974 |
|
|
use ieee.std_logic_1164.all;
|
975 |
|
|
--use IEEE.std_logic_arith.all;
|
976 |
|
|
use IEEE.std_logic_unsigned.all;
|
977 |
|
|
|
978 |
|
|
entity FLAG_LOGIC is
|
979 |
|
|
generic (
|
980 |
|
|
WPOINTER_WIDTH : integer := 9;
|
981 |
|
|
RPOINTER_WIDTH : integer := 9;
|
982 |
|
|
WDATA_WIDTH : integer := 32;
|
983 |
|
|
RDATA_WIDTH : integer := 32;
|
984 |
|
|
AMFULL_X : integer := 1;
|
985 |
|
|
AMEMPTY_Y : integer := 1
|
986 |
|
|
);
|
987 |
|
|
port (
|
988 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0) := (others => '0');--QQ
|
989 |
|
|
R_POINTER : in STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0) := (others => '0');
|
990 |
|
|
W_POINTER : in STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0) := (others => '0');
|
991 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
992 |
|
|
READ_EN : in STD_LOGIC ;
|
993 |
|
|
READ_CLK : in STD_LOGIC ;
|
994 |
|
|
WRITE_EN : in STD_LOGIC ;
|
995 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
996 |
|
|
FULL_D : out STD_LOGIC ;
|
997 |
|
|
EMPTY_D : out STD_LOGIC ;
|
998 |
|
|
AMFULL_D : out STD_LOGIC ;
|
999 |
|
|
AMEMPTY_D : out STD_LOGIC
|
1000 |
|
|
);
|
1001 |
|
|
end FLAG_LOGIC;
|
1002 |
|
|
|
1003 |
|
|
architecture LATTICE_BEHAV of FLAG_LOGIC is
|
1004 |
|
|
--------------------------------------------------------------------------
|
1005 |
|
|
-- Function: Valid_Address
|
1006 |
|
|
-- Description:
|
1007 |
|
|
--------------------------------------------------------------------------
|
1008 |
|
|
function Valid_Pointer (
|
1009 |
|
|
IN_ADDR : in STD_LOGIC_VECTOR
|
1010 |
|
|
) return BOOLEAN is
|
1011 |
|
|
|
1012 |
|
|
variable v_Valid_Flag : BOOLEAN := TRUE;
|
1013 |
|
|
|
1014 |
|
|
begin
|
1015 |
|
|
|
1016 |
|
|
for i in IN_ADDR'high downto IN_ADDR'low loop
|
1017 |
|
|
if (IN_ADDR(i) /= '0' and IN_ADDR(i) /= '1') then
|
1018 |
|
|
v_Valid_Flag := FALSE;
|
1019 |
|
|
end if;
|
1020 |
|
|
end loop;
|
1021 |
|
|
|
1022 |
|
|
return v_Valid_Flag;
|
1023 |
|
|
end Valid_Pointer;
|
1024 |
|
|
|
1025 |
|
|
--------------------------------------------------------------------------
|
1026 |
|
|
-- Function: Calculate_Offset
|
1027 |
|
|
-- Description:
|
1028 |
|
|
--------------------------------------------------------------------------
|
1029 |
|
|
function Calculate_Offset (
|
1030 |
|
|
IN_TC : in STD_LOGIC_VECTOR;
|
1031 |
|
|
TC_LENGTH: in INTEGER
|
1032 |
|
|
) return STD_LOGIC_VECTOR is
|
1033 |
|
|
|
1034 |
|
|
variable vTC_FULL: STD_LOGIC_VECTOR (TC_LENGTH -1 downto 0) := (others => '1');
|
1035 |
|
|
variable vTC_TEMP: STD_LOGIC_VECTOR (TC_LENGTH -1 downto 0) := (others => '0');
|
1036 |
|
|
variable vOFFSET : STD_LOGIC_VECTOR (TC_LENGTH -1 downto 0) := (others => '0');
|
1037 |
|
|
begin
|
1038 |
|
|
vTC_TEMP := IN_TC;
|
1039 |
|
|
vOFFSET := vTC_FULL-vTC_TEMP;
|
1040 |
|
|
return vOFFSET;
|
1041 |
|
|
end Calculate_Offset;
|
1042 |
|
|
|
1043 |
|
|
begin
|
1044 |
|
|
|
1045 |
|
|
--------------------------------------------------------------------------
|
1046 |
|
|
-- Function: Main Process
|
1047 |
|
|
-- Description:
|
1048 |
|
|
--------------------------------------------------------------------------
|
1049 |
|
|
FULL_AMFULL: process (GLOBAL_RST, WRITE_EN, WRITE_CLK, W_POINTER, R_POINTER)
|
1050 |
|
|
variable v_WP_Valid_Flag : boolean := TRUE;
|
1051 |
|
|
variable v_RP_Valid_Flag : boolean := TRUE;
|
1052 |
|
|
--variable v_WP_Check_FULL_TMP : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1053 |
|
|
variable v_WP_Check_AMFL_TMP : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0) := (others => '0'); --QQ
|
1054 |
|
|
variable v_WP_Check_AMFL_TMP1 : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0) := (others => '0'); --QQ
|
1055 |
|
|
variable v_WP_Check_FULL : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0) := (others => '0'); --QQ
|
1056 |
|
|
variable v_WP_Check_AMFL : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0) := (others => '0'); --QQ
|
1057 |
|
|
|
1058 |
|
|
begin
|
1059 |
|
|
v_WP_Valid_Flag := Valid_Pointer(W_POINTER);
|
1060 |
|
|
v_RP_Valid_Flag := Valid_Pointer(R_POINTER);
|
1061 |
|
|
if( v_WP_Valid_Flag = TRUE) then
|
1062 |
|
|
v_WP_Check_AMFL_TMP := W_POINTER + AMFULL_X + 1;
|
1063 |
|
|
end if;
|
1064 |
|
|
|
1065 |
|
|
v_WP_Check_AMFL_TMP1 := v_WP_Check_AMFL_TMP + Calculate_Offset(TERMINAL_COUNT, WPOINTER_WIDTH);
|
1066 |
|
|
|
1067 |
|
|
if ( v_WP_Valid_Flag = TRUE and W_POINTER = TERMINAL_COUNT ) then
|
1068 |
|
|
v_WP_Check_FULL := (others => '0');
|
1069 |
|
|
elsif( v_WP_Valid_Flag = TRUE ) then
|
1070 |
|
|
v_WP_Check_FULL := W_POINTER + 1;
|
1071 |
|
|
end if;
|
1072 |
|
|
|
1073 |
|
|
if GLOBAL_RST = '1' then
|
1074 |
|
|
FULL_D <= '0';
|
1075 |
|
|
AMFULL_D <= '0';
|
1076 |
|
|
|
1077 |
|
|
elsif( v_WP_Valid_Flag = TRUE and v_RP_Valid_Flag = TRUE) then
|
1078 |
|
|
|
1079 |
|
|
if R_POINTER = v_WP_Check_FULL then
|
1080 |
|
|
FULL_D <= '1';
|
1081 |
|
|
else
|
1082 |
|
|
FULL_D <= '0';
|
1083 |
|
|
end if;
|
1084 |
|
|
|
1085 |
|
|
if (W_POINTER > R_POINTER) then
|
1086 |
|
|
if (v_WP_Check_AMFL_TMP1 < W_POINTER) then
|
1087 |
|
|
if v_WP_Check_AMFL_TMP1 >= R_POINTER then
|
1088 |
|
|
AMFULL_D <= '1';
|
1089 |
|
|
else
|
1090 |
|
|
AMFULL_D <= '0';
|
1091 |
|
|
end if;
|
1092 |
|
|
else
|
1093 |
|
|
AMFULL_D <= '0';
|
1094 |
|
|
end if;
|
1095 |
|
|
elsif (W_POINTER < R_POINTER) then
|
1096 |
|
|
if (v_WP_Check_AMFL_TMP1 < W_POINTER) then
|
1097 |
|
|
AMFULL_D <= '1';
|
1098 |
|
|
elsif (v_WP_Check_AMFL_TMP >= R_POINTER) then
|
1099 |
|
|
AMFULL_D <= '1';
|
1100 |
|
|
else
|
1101 |
|
|
AMFULL_D <= '0';
|
1102 |
|
|
end if;
|
1103 |
|
|
end if;
|
1104 |
|
|
|
1105 |
|
|
end if;
|
1106 |
|
|
|
1107 |
|
|
end process FULL_AMFULL;
|
1108 |
|
|
|
1109 |
|
|
EMPTY_AMEMPTY: process (GLOBAL_RST, READ_EN, READ_CLK, W_POINTER, R_POINTER)
|
1110 |
|
|
variable v_WP_Valid_Flag : boolean := TRUE;
|
1111 |
|
|
variable v_RP_Valid_Flag : boolean := TRUE;
|
1112 |
|
|
variable v_RP_Check_EMPT_TMP : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1113 |
|
|
variable v_RP_Check_AMET_TMP : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1114 |
|
|
variable v_RP_Check_AMET_TMP1 : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1115 |
|
|
--variable v_RP_Check_EMPT : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1116 |
|
|
variable v_RP_Check_AMET : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0'); --QQ
|
1117 |
|
|
|
1118 |
|
|
begin
|
1119 |
|
|
v_WP_Valid_Flag := Valid_Pointer(W_POINTER);
|
1120 |
|
|
v_RP_Valid_Flag := Valid_Pointer(R_POINTER);
|
1121 |
|
|
if( v_RP_Valid_Flag = TRUE and v_WP_Valid_Flag = TRUE) then
|
1122 |
|
|
v_RP_Check_AMET_TMP := R_POINTER + AMEMPTY_Y ; -- Different from TSPEC QQ 07 17,2002
|
1123 |
|
|
end if;
|
1124 |
|
|
v_RP_Check_AMET_TMP1 := v_RP_Check_AMET_TMP + Calculate_Offset(TERMINAL_COUNT, RPOINTER_WIDTH);
|
1125 |
|
|
|
1126 |
|
|
if GLOBAL_RST = '1' then
|
1127 |
|
|
EMPTY_D <= '0';
|
1128 |
|
|
AMEMPTY_D <= '0';
|
1129 |
|
|
elsif( v_WP_Valid_Flag = TRUE and v_RP_Valid_Flag = TRUE) then
|
1130 |
|
|
if R_POINTER = W_POINTER then -- Different from TSPEC QQ 07 17,2002
|
1131 |
|
|
EMPTY_D <= '0';
|
1132 |
|
|
else
|
1133 |
|
|
EMPTY_D <= '1';
|
1134 |
|
|
end if;
|
1135 |
|
|
|
1136 |
|
|
|
1137 |
|
|
if (W_POINTER < R_POINTER) then
|
1138 |
|
|
if (v_RP_Check_AMET_TMP1 < R_POINTER) then
|
1139 |
|
|
v_RP_Check_AMET := v_RP_Check_AMET_TMP + Calculate_Offset(TERMINAL_COUNT, RPOINTER_WIDTH);
|
1140 |
|
|
if v_RP_Check_AMET >= W_POINTER then
|
1141 |
|
|
AMEMPTY_D <= '0';
|
1142 |
|
|
else
|
1143 |
|
|
AMEMPTY_D <= '1';
|
1144 |
|
|
end if;
|
1145 |
|
|
else
|
1146 |
|
|
AMEMPTY_D <= '1';
|
1147 |
|
|
end if;
|
1148 |
|
|
elsif (W_POINTER > R_POINTER) then
|
1149 |
|
|
if (v_RP_Check_AMET_TMP1 < R_POINTER) then
|
1150 |
|
|
AMEMPTY_D <= '0';
|
1151 |
|
|
elsif (v_RP_Check_AMET_TMP >= W_POINTER) then
|
1152 |
|
|
AMEMPTY_D <= '0';
|
1153 |
|
|
else
|
1154 |
|
|
AMEMPTY_D <= '1';
|
1155 |
|
|
end if;
|
1156 |
|
|
elsif (W_POINTER = R_POINTER) then
|
1157 |
|
|
AMEMPTY_D <= '0';
|
1158 |
|
|
end if;
|
1159 |
|
|
end if;
|
1160 |
|
|
end process EMPTY_AMEMPTY;
|
1161 |
|
|
|
1162 |
|
|
end LATTICE_BEHAV;
|
1163 |
|
|
|
1164 |
|
|
LIBRARY ieee;
|
1165 |
|
|
USE ieee.std_logic_1164.ALL;
|
1166 |
|
|
---USE ieee.std_logic_arith.ALL;
|
1167 |
|
|
USE ieee.std_logic_unsigned.ALL;
|
1168 |
|
|
|
1169 |
|
|
--LIBRARY SC_LIB;
|
1170 |
|
|
--USE SC_LIB.SC_FIFO_COMPS.ALL;
|
1171 |
|
|
|
1172 |
|
|
entity SC_FIFO_16K_L is
|
1173 |
|
|
generic (
|
1174 |
|
|
TERMINAL_COUNT : integer := 511; --QQ: Word number < 2**WADDR_WIDTH
|
1175 |
|
|
WADDR_WIDTH : integer := 9;
|
1176 |
|
|
WDATA_WIDTH : integer := 32;
|
1177 |
|
|
RADDR_WIDTH : integer := 9;
|
1178 |
|
|
RDATA_WIDTH : integer := 32;
|
1179 |
|
|
ALMOST_FULL_X : integer := 1;
|
1180 |
|
|
ALMOST_EMPTY_Y : integer := 1;
|
1181 |
|
|
MEM_INIT_FLAG : integer := 0;
|
1182 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
1183 |
|
|
|
1184 |
|
|
);
|
1185 |
|
|
|
1186 |
|
|
port (
|
1187 |
|
|
WE : in STD_LOGIC ;
|
1188 |
|
|
WCLK : in STD_LOGIC ;
|
1189 |
|
|
RST : in STD_LOGIC ;
|
1190 |
|
|
RPRST : in STD_LOGIC ;
|
1191 |
|
|
RE : in STD_LOGIC ;
|
1192 |
|
|
RCLK : in STD_LOGIC ;
|
1193 |
|
|
FULLIN : in STD_LOGIC ;
|
1194 |
|
|
EMPTYIN : in STD_LOGIC ;
|
1195 |
|
|
DI : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
1196 |
|
|
|
1197 |
|
|
FULL : out STD_LOGIC ;
|
1198 |
|
|
EMPTY : out STD_LOGIC ;
|
1199 |
|
|
AMFULL : out STD_LOGIC ;
|
1200 |
|
|
AMEMPTY : out STD_LOGIC ;
|
1201 |
|
|
DO : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
1202 |
|
|
|
1203 |
|
|
);
|
1204 |
|
|
|
1205 |
|
|
end SC_FIFO_16K_L;
|
1206 |
|
|
|
1207 |
|
|
-- ************************************************************************
|
1208 |
|
|
-- architecture
|
1209 |
|
|
-- ************************************************************************
|
1210 |
|
|
|
1211 |
|
|
architecture LATTICE_BEHAV of SC_FIFO_16K_L is
|
1212 |
|
|
|
1213 |
|
|
---------------------------------------------------------
|
1214 |
|
|
-- Function: TO_STD_VECTOR
|
1215 |
|
|
---------------------------------------------------------
|
1216 |
|
|
function TO_STD_VECTOR ( INPUT_STRING : string; INPUT_LENGTH: integer)
|
1217 |
|
|
return std_logic_vector is
|
1218 |
|
|
|
1219 |
|
|
variable vDATA_STD_VEC: std_logic_vector(INPUT_LENGTH -1 downto 0) := (others => '0');
|
1220 |
|
|
variable vTRANS: string(INPUT_LENGTH downto 1) := (others => '0');
|
1221 |
|
|
|
1222 |
|
|
begin
|
1223 |
|
|
vTRANS := INPUT_STRING;
|
1224 |
|
|
|
1225 |
|
|
for i in INPUT_LENGTH downto 1 loop
|
1226 |
|
|
if (vTRANS(i) = '1') then
|
1227 |
|
|
vDATA_STD_VEC(i-1) := '1';
|
1228 |
|
|
elsif ( vTRANS(i) ='0') then
|
1229 |
|
|
vDATA_STD_VEC(i-1) := '0';
|
1230 |
|
|
end if;
|
1231 |
|
|
end loop;
|
1232 |
|
|
return vDATA_STD_VEC;
|
1233 |
|
|
end TO_STD_VECTOR;
|
1234 |
|
|
|
1235 |
|
|
---------------------------------------------------------
|
1236 |
|
|
-- Function: INT_TO_VEC
|
1237 |
|
|
---------------------------------------------------------
|
1238 |
|
|
function INT_TO_VEC ( INPUT_INT : integer; INPUT_LENGTH: integer)
|
1239 |
|
|
return std_logic_vector is
|
1240 |
|
|
|
1241 |
|
|
variable vDATA_STD_VEC: std_logic_vector(INPUT_LENGTH -1 downto 0) := (others => '0');
|
1242 |
|
|
variable vTRANS: integer := 0;
|
1243 |
|
|
variable vQUOTIENT: integer := 0;
|
1244 |
|
|
|
1245 |
|
|
begin
|
1246 |
|
|
vQUOTIENT := INPUT_INT;
|
1247 |
|
|
|
1248 |
|
|
for i in 0 to INPUT_LENGTH -1 loop
|
1249 |
|
|
vTRANS := 0;
|
1250 |
|
|
while vQUOTIENT >1 loop
|
1251 |
|
|
vQUOTIENT := vQUOTIENT - 2;
|
1252 |
|
|
vTRANS := vTRANS + 1;
|
1253 |
|
|
end loop;
|
1254 |
|
|
case vQUOTIENT is
|
1255 |
|
|
when 1 =>
|
1256 |
|
|
vDATA_STD_VEC(i) := '1';
|
1257 |
|
|
when 0 =>
|
1258 |
|
|
vDATA_STD_VEC(i) := '0';
|
1259 |
|
|
when others =>
|
1260 |
|
|
null;
|
1261 |
|
|
end case;
|
1262 |
|
|
vQUOTIENT := vTRANS;
|
1263 |
|
|
end loop;
|
1264 |
|
|
return vDATA_STD_VEC;
|
1265 |
|
|
end INT_TO_VEC;
|
1266 |
|
|
---------------------------------------------------------
|
1267 |
|
|
-- Components Definition
|
1268 |
|
|
---------------------------------------------------------
|
1269 |
|
|
|
1270 |
|
|
component SC_BRAM_16K_L_SYNC
|
1271 |
|
|
|
1272 |
|
|
generic (
|
1273 |
|
|
WADDR_WIDTH_A : integer := 14;
|
1274 |
|
|
RADDR_WIDTH_A : integer := 12;
|
1275 |
|
|
WADDR_WIDTH_B : integer := 14;
|
1276 |
|
|
RADDR_WIDTH_B : integer := 12;
|
1277 |
|
|
WDATA_WIDTH_A : integer := 1;
|
1278 |
|
|
RDATA_WIDTH_A : integer := 4;
|
1279 |
|
|
WDATA_WIDTH_B : integer := 1;
|
1280 |
|
|
RDATA_WIDTH_B : integer := 4;
|
1281 |
|
|
ARRAY_SIZE : integer := 16384;
|
1282 |
|
|
MEM_INIT_FLAG : integer := 0;
|
1283 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
1284 |
|
|
|
1285 |
|
|
);
|
1286 |
|
|
|
1287 |
|
|
port (
|
1288 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
1289 |
|
|
WEA : in STD_LOGIC ;
|
1290 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
1291 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
1292 |
|
|
REA : in STD_LOGIC ;
|
1293 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
1294 |
|
|
|
1295 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
1296 |
|
|
WEB : in STD_LOGIC;
|
1297 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
1298 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
1299 |
|
|
REB : in STD_LOGIC;
|
1300 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0);
|
1301 |
|
|
WCLK : in STD_LOGIC;
|
1302 |
|
|
RCLK : in STD_LOGIC
|
1303 |
|
|
);
|
1304 |
|
|
end component;
|
1305 |
|
|
|
1306 |
|
|
component READ_POINTER_CTRL
|
1307 |
|
|
|
1308 |
|
|
generic (
|
1309 |
|
|
RPOINTER_WIDTH : integer := 9
|
1310 |
|
|
);
|
1311 |
|
|
port (
|
1312 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(RPOINTER_WIDTH -1 downto 0);--QQ
|
1313 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1314 |
|
|
RESET_RP : in STD_LOGIC ;
|
1315 |
|
|
READ_EN : in STD_LOGIC ;
|
1316 |
|
|
READ_CLK : in STD_LOGIC ;
|
1317 |
|
|
EMPTY_FLAG : in STD_LOGIC ;
|
1318 |
|
|
READ_POINTER : out STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0)
|
1319 |
|
|
);
|
1320 |
|
|
end component;
|
1321 |
|
|
|
1322 |
|
|
component WRITE_POINTER_CTRL
|
1323 |
|
|
generic (
|
1324 |
|
|
WPOINTER_WIDTH : integer := 9;
|
1325 |
|
|
WDATA_WIDTH : integer := 32
|
1326 |
|
|
);
|
1327 |
|
|
port (
|
1328 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0);--QQ
|
1329 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1330 |
|
|
WRITE_EN : in STD_LOGIC ;
|
1331 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
1332 |
|
|
FULL_FLAG : in STD_LOGIC ;
|
1333 |
|
|
WRITE_POINTER : out STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0)
|
1334 |
|
|
);
|
1335 |
|
|
end component;
|
1336 |
|
|
|
1337 |
|
|
component FLAG_LOGIC
|
1338 |
|
|
generic (
|
1339 |
|
|
WPOINTER_WIDTH : integer := 9;
|
1340 |
|
|
RPOINTER_WIDTH : integer := 9;
|
1341 |
|
|
WDATA_WIDTH : integer := 32;
|
1342 |
|
|
RDATA_WIDTH : integer := 32;
|
1343 |
|
|
AMFULL_X : integer := 1;
|
1344 |
|
|
AMEMPTY_Y : integer := 1
|
1345 |
|
|
);
|
1346 |
|
|
port (
|
1347 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0);--QQ
|
1348 |
|
|
R_POINTER : in STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0);
|
1349 |
|
|
W_POINTER : in STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0);
|
1350 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1351 |
|
|
READ_EN : in STD_LOGIC ;
|
1352 |
|
|
READ_CLK : in STD_LOGIC ;
|
1353 |
|
|
WRITE_EN : in STD_LOGIC ;
|
1354 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
1355 |
|
|
FULL_D : out STD_LOGIC ;
|
1356 |
|
|
EMPTY_D : out STD_LOGIC ;
|
1357 |
|
|
AMFULL_D : out STD_LOGIC ;
|
1358 |
|
|
AMEMPTY_D : out STD_LOGIC
|
1359 |
|
|
);
|
1360 |
|
|
end component;
|
1361 |
|
|
-- Signal Declaration
|
1362 |
|
|
|
1363 |
|
|
signal WE_node : STD_LOGIC := '0';
|
1364 |
|
|
signal WCLK_node : STD_LOGIC := '0';
|
1365 |
|
|
signal RST_node : STD_LOGIC := '0';
|
1366 |
|
|
signal RPRST_node : STD_LOGIC := '0';
|
1367 |
|
|
signal RE_node : STD_LOGIC := '0';
|
1368 |
|
|
signal RCLK_node : STD_LOGIC := '0';
|
1369 |
|
|
signal FULLIN_node : STD_LOGIC := '0';
|
1370 |
|
|
signal EMPTYIN_node : STD_LOGIC := '0';
|
1371 |
|
|
signal DI_node : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => '0');
|
1372 |
|
|
|
1373 |
|
|
signal DI_reg : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => '0');
|
1374 |
|
|
signal FULLIN_reg : STD_LOGIC := '0';
|
1375 |
|
|
signal EMPTYIN_reg : STD_LOGIC := '0';
|
1376 |
|
|
|
1377 |
|
|
signal FULL_node : STD_LOGIC := '0';
|
1378 |
|
|
signal EMPTY_node : STD_LOGIC := '0';
|
1379 |
|
|
signal AMFULL_node : STD_LOGIC := '0';
|
1380 |
|
|
signal AMEMPTY_node : STD_LOGIC := '0';
|
1381 |
|
|
signal DO_node : STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0) := (others => '0');
|
1382 |
|
|
|
1383 |
|
|
signal TC_node : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => '0');
|
1384 |
|
|
|
1385 |
|
|
signal FULL_reg : STD_LOGIC := '0';
|
1386 |
|
|
signal EMPTY_reg : STD_LOGIC := '0';
|
1387 |
|
|
signal AMFULL_reg : STD_LOGIC := '0';
|
1388 |
|
|
signal AMEMPTY_reg : STD_LOGIC := '0';
|
1389 |
|
|
|
1390 |
|
|
signal RP_node : STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0) := (others => '0');
|
1391 |
|
|
signal WP_node : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => '0');
|
1392 |
|
|
|
1393 |
|
|
signal GND_sig : STD_LOGIC := '0';
|
1394 |
|
|
-- architecture
|
1395 |
|
|
|
1396 |
|
|
begin
|
1397 |
|
|
|
1398 |
|
|
GND_sig <= '0';
|
1399 |
|
|
WE_node <= WE and not(FULL_node);
|
1400 |
|
|
WCLK_node <= WCLK;
|
1401 |
|
|
RST_node <= RST;
|
1402 |
|
|
RPRST_node <= RPRST;
|
1403 |
|
|
RE_node <= RE and EMPTY_node;
|
1404 |
|
|
RCLK_node <= RCLK;
|
1405 |
|
|
FULLIN_node <= FULLIN;
|
1406 |
|
|
EMPTYIN_node <= EMPTYIN;
|
1407 |
|
|
DI_node <= DI;
|
1408 |
|
|
--TC_node <= TO_STD_VECTOR(TERMINAL_COUNT,WADDR_WIDTH);
|
1409 |
|
|
TC_node <= INT_TO_VEC(TERMINAL_COUNT,WADDR_WIDTH);
|
1410 |
|
|
|
1411 |
|
|
--FULL <= FULL_node;
|
1412 |
|
|
FULL <= FULL_node when (RE_node = '0') else FULL_reg;
|
1413 |
|
|
--AMFULL <= AMFULL_node;
|
1414 |
|
|
AMFULL <= AMFULL_node when (RE_node = '0') else AMFULL_reg;
|
1415 |
|
|
EMPTY <= not EMPTY_node;
|
1416 |
|
|
AMEMPTY <= not AMEMPTY_node;
|
1417 |
|
|
|
1418 |
|
|
DO <= DO_node;
|
1419 |
|
|
|
1420 |
|
|
-- Register Port DI inputs
|
1421 |
|
|
register_DI_inputs: process (RST_node, WCLK_node)
|
1422 |
|
|
begin
|
1423 |
|
|
if (RST_node = '1') then
|
1424 |
|
|
DI_reg <= (others =>'0');
|
1425 |
|
|
elsif (WCLK_node'event and WCLK_node = '1') then
|
1426 |
|
|
if (WE_node = '1') then
|
1427 |
|
|
DI_reg <= DI_node after 1 ps;
|
1428 |
|
|
end if;
|
1429 |
|
|
end if;
|
1430 |
|
|
end process register_DI_inputs;
|
1431 |
|
|
|
1432 |
|
|
-- Register flag inputs
|
1433 |
|
|
register_flag_inputs: process (RST_node, WCLK_node, RCLK_node)
|
1434 |
|
|
begin
|
1435 |
|
|
if (RST_node = '1') then
|
1436 |
|
|
FULLIN_reg <= '0';
|
1437 |
|
|
EMPTYIN_reg <= '0';
|
1438 |
|
|
else
|
1439 |
|
|
|
1440 |
|
|
if (WCLK_node'event and WCLK_node = '1') then
|
1441 |
|
|
-- WE_reg <= WE_node and not (FULL_reg); --QQ
|
1442 |
|
|
if (WE_node = '1') then
|
1443 |
|
|
FULLIN_reg <= FULLIN_node;
|
1444 |
|
|
end if;
|
1445 |
|
|
end if;
|
1446 |
|
|
|
1447 |
|
|
if (RCLK_node'event and RCLK_node = '1') then
|
1448 |
|
|
-- RE_reg <= RE_node and EMPTY_reg; --QQ
|
1449 |
|
|
if (RE_node = '1') then
|
1450 |
|
|
EMPTYIN_reg <= EMPTYIN_node;
|
1451 |
|
|
end if;
|
1452 |
|
|
end if;
|
1453 |
|
|
|
1454 |
|
|
end if;
|
1455 |
|
|
end process register_flag_inputs;
|
1456 |
|
|
|
1457 |
|
|
-- Register flag outputs
|
1458 |
|
|
register_flag_outputs: process (RST_node, WCLK_node, RCLK_node)
|
1459 |
|
|
begin
|
1460 |
|
|
if (RST_node = '1') then
|
1461 |
|
|
FULL_node <= '0';
|
1462 |
|
|
AMFULL_node <= '0';
|
1463 |
|
|
EMPTY_node <= '0';
|
1464 |
|
|
AMEMPTY_node <= '0';
|
1465 |
|
|
else
|
1466 |
|
|
if (WCLK_node'event and WCLK_node = '1') then
|
1467 |
|
|
FULL_node <= FULL_reg;
|
1468 |
|
|
AMFULL_node <= AMFULL_reg;
|
1469 |
|
|
end if;
|
1470 |
|
|
if (RCLK_node'event and RCLK_node = '1') then
|
1471 |
|
|
EMPTY_node <= EMPTY_reg;
|
1472 |
|
|
AMEMPTY_node <= AMEMPTY_reg;
|
1473 |
|
|
end if;
|
1474 |
|
|
end if;
|
1475 |
|
|
end process register_flag_outputs;
|
1476 |
|
|
|
1477 |
|
|
-- READ_POINTER_CTRL instance for FIFO
|
1478 |
|
|
FIFO_RPC_INST: READ_POINTER_CTRL
|
1479 |
|
|
generic map (
|
1480 |
|
|
RPOINTER_WIDTH => RADDR_WIDTH
|
1481 |
|
|
)
|
1482 |
|
|
port map (
|
1483 |
|
|
TERMINAL_COUNT => TC_node,
|
1484 |
|
|
GLOBAL_RST => RST_node,
|
1485 |
|
|
RESET_RP => RPRST_node,
|
1486 |
|
|
READ_EN => RE_node,
|
1487 |
|
|
READ_CLK => RCLK_node,
|
1488 |
|
|
EMPTY_FLAG => EMPTY_reg,
|
1489 |
|
|
READ_POINTER => RP_node
|
1490 |
|
|
);
|
1491 |
|
|
|
1492 |
|
|
-- WRITE_POINTER_CTRL instance for FIFO
|
1493 |
|
|
FIFO_WPC_INST: WRITE_POINTER_CTRL
|
1494 |
|
|
generic map (
|
1495 |
|
|
WPOINTER_WIDTH => WADDR_WIDTH,
|
1496 |
|
|
WDATA_WIDTH => WDATA_WIDTH
|
1497 |
|
|
)
|
1498 |
|
|
port map (
|
1499 |
|
|
TERMINAL_COUNT => TC_node,
|
1500 |
|
|
GLOBAL_RST => RST_node,
|
1501 |
|
|
WRITE_EN => WE_node,
|
1502 |
|
|
WRITE_CLK => WCLK_node,
|
1503 |
|
|
FULL_FLAG => FULL_reg,
|
1504 |
|
|
WRITE_POINTER => WP_node
|
1505 |
|
|
);
|
1506 |
|
|
|
1507 |
|
|
-- FLAG_LOGIC instance for FIFO
|
1508 |
|
|
FIFO_FL_INST: FLAG_LOGIC
|
1509 |
|
|
generic map (
|
1510 |
|
|
WPOINTER_WIDTH => WADDR_WIDTH,
|
1511 |
|
|
RPOINTER_WIDTH => RADDR_WIDTH,
|
1512 |
|
|
WDATA_WIDTH => WDATA_WIDTH,
|
1513 |
|
|
RDATA_WIDTH => RDATA_WIDTH,
|
1514 |
|
|
AMFULL_X => ALMOST_FULL_X,
|
1515 |
|
|
AMEMPTY_Y => ALMOST_EMPTY_Y
|
1516 |
|
|
)
|
1517 |
|
|
port map(
|
1518 |
|
|
TERMINAL_COUNT => TC_node,
|
1519 |
|
|
R_POINTER => RP_node,
|
1520 |
|
|
W_POINTER => WP_node,
|
1521 |
|
|
GLOBAL_RST => RST_node,
|
1522 |
|
|
READ_EN => RE_node,
|
1523 |
|
|
READ_CLK => RCLK_node,
|
1524 |
|
|
WRITE_EN => WE_node,
|
1525 |
|
|
WRITE_CLK => WCLK_node,
|
1526 |
|
|
FULL_D => FULL_reg,
|
1527 |
|
|
EMPTY_D => EMPTY_reg,
|
1528 |
|
|
AMFULL_D => AMFULL_reg,
|
1529 |
|
|
AMEMPTY_D => AMEMPTY_reg
|
1530 |
|
|
);
|
1531 |
|
|
|
1532 |
|
|
-- BRAM instance for FIFO
|
1533 |
|
|
FIFO_BRAM_INST: SC_BRAM_16K_L_SYNC
|
1534 |
|
|
|
1535 |
|
|
generic map(
|
1536 |
|
|
WADDR_WIDTH_A => WADDR_WIDTH,
|
1537 |
|
|
RADDR_WIDTH_A => RADDR_WIDTH,
|
1538 |
|
|
WADDR_WIDTH_B => WADDR_WIDTH,
|
1539 |
|
|
RADDR_WIDTH_B => RADDR_WIDTH,
|
1540 |
|
|
WDATA_WIDTH_A => WDATA_WIDTH,
|
1541 |
|
|
RDATA_WIDTH_A => RDATA_WIDTH,
|
1542 |
|
|
WDATA_WIDTH_B => WDATA_WIDTH,
|
1543 |
|
|
RDATA_WIDTH_B => RDATA_WIDTH,
|
1544 |
|
|
ARRAY_SIZE => open,
|
1545 |
|
|
MEM_INIT_FLAG => MEM_INIT_FLAG,
|
1546 |
|
|
MEM_INIT_FILE => MEM_INIT_FILE
|
1547 |
|
|
|
1548 |
|
|
)
|
1549 |
|
|
port map (
|
1550 |
|
|
WADA => WP_node,
|
1551 |
|
|
WEA => WE_node,
|
1552 |
|
|
WDA => DI_node,
|
1553 |
|
|
RADA => RP_node,
|
1554 |
|
|
REA => RE_node,
|
1555 |
|
|
RDA => DO_node,
|
1556 |
|
|
|
1557 |
|
|
WADB => WP_node,
|
1558 |
|
|
WEB => GND_sig,
|
1559 |
|
|
WDB => DI_node,
|
1560 |
|
|
RADB => RP_node,
|
1561 |
|
|
REB => GND_sig,
|
1562 |
|
|
RDB => open,
|
1563 |
|
|
WCLK => WCLK_node,
|
1564 |
|
|
RCLK => RCLK_node
|
1565 |
|
|
);
|
1566 |
|
|
|
1567 |
|
|
end LATTICE_BEHAV;
|
1568 |
|
|
|
1569 |
|
|
-- ************************************************************************
|
1570 |
|
|
--
|
1571 |
|
|
-- FIFO V2: Behavioral Model
|
1572 |
|
|
-- ************************************************************************
|
1573 |
|
|
--
|
1574 |
|
|
-- Filename: SC_FIFO_V2.vhd
|
1575 |
|
|
-- Description: FIFO behavioral model.
|
1576 |
|
|
|
1577 |
|
|
-- ************************************************************************
|
1578 |
|
|
-- FIFO COMPONENTS READ_POINTER_CTRL_V2
|
1579 |
|
|
-- ************************************************************************
|
1580 |
|
|
library ieee;
|
1581 |
|
|
use ieee.std_logic_1164.all;
|
1582 |
|
|
use ieee.std_logic_arith.all;
|
1583 |
|
|
use ieee.std_logic_unsigned.all;
|
1584 |
|
|
|
1585 |
|
|
entity READ_POINTER_CTRL_V2 is
|
1586 |
|
|
generic (
|
1587 |
|
|
RPOINTER_WIDTH : integer := 9
|
1588 |
|
|
);
|
1589 |
|
|
port (
|
1590 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(RPOINTER_WIDTH -1 downto 0);--QQ
|
1591 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1592 |
|
|
RESET_RP : in STD_LOGIC ;
|
1593 |
|
|
READ_EN : in STD_LOGIC ;
|
1594 |
|
|
READ_CLK : in STD_LOGIC ;
|
1595 |
|
|
EMPTY_FLAG : in STD_LOGIC ;
|
1596 |
|
|
READ_POINTER : out STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0)
|
1597 |
|
|
);
|
1598 |
|
|
end READ_POINTER_CTRL_V2;
|
1599 |
|
|
|
1600 |
|
|
architecture LATTICE_BEHAV of READ_POINTER_CTRL_V2 is
|
1601 |
|
|
|
1602 |
|
|
signal s_READ_POINTER : STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0) := (others => '0');
|
1603 |
|
|
|
1604 |
|
|
begin
|
1605 |
|
|
|
1606 |
|
|
READ_POINTER <= s_READ_POINTER;
|
1607 |
|
|
|
1608 |
|
|
process (GLOBAL_RST, RESET_RP, READ_EN, READ_CLK)
|
1609 |
|
|
|
1610 |
|
|
variable v_READ_POINTER: STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0):= (others => '0');
|
1611 |
|
|
|
1612 |
|
|
begin
|
1613 |
|
|
|
1614 |
|
|
if GLOBAL_RST = '1' or RESET_RP = '1' then
|
1615 |
|
|
|
1616 |
|
|
s_READ_POINTER <= TERMINAL_COUNT;
|
1617 |
|
|
|
1618 |
|
|
elsif (READ_CLK'EVENT and READ_CLK = '1') then
|
1619 |
|
|
if (READ_EN = '1' and EMPTY_FLAG = '1') then
|
1620 |
|
|
v_READ_POINTER := s_READ_POINTER + '1';
|
1621 |
|
|
|
1622 |
|
|
else
|
1623 |
|
|
v_READ_POINTER := s_READ_POINTER;
|
1624 |
|
|
end if;
|
1625 |
|
|
|
1626 |
|
|
if (v_READ_POINTER = TERMINAL_COUNT + 1) then
|
1627 |
|
|
s_READ_POINTER <= (others => '0');
|
1628 |
|
|
else
|
1629 |
|
|
s_READ_POINTER <= v_READ_POINTER;
|
1630 |
|
|
end if;
|
1631 |
|
|
end if;
|
1632 |
|
|
|
1633 |
|
|
end process;
|
1634 |
|
|
end LATTICE_BEHAV;
|
1635 |
|
|
|
1636 |
|
|
-- ************************************************************************
|
1637 |
|
|
-- FIFO COMPONENTS WRITE_POINTER_CTRL_V2
|
1638 |
|
|
-- ************************************************************************
|
1639 |
|
|
library ieee;
|
1640 |
|
|
use ieee.std_logic_1164.all;
|
1641 |
|
|
use IEEE.std_logic_arith.all;
|
1642 |
|
|
use IEEE.std_logic_unsigned.all;
|
1643 |
|
|
|
1644 |
|
|
entity WRITE_POINTER_CTRL_V2 is
|
1645 |
|
|
generic (
|
1646 |
|
|
WPOINTER_WIDTH : integer := 9;
|
1647 |
|
|
WDATA_WIDTH : integer := 32
|
1648 |
|
|
);
|
1649 |
|
|
port (
|
1650 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0);--QQ
|
1651 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1652 |
|
|
WRITE_EN : in STD_LOGIC ;
|
1653 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
1654 |
|
|
FULL_FLAG : in STD_LOGIC ;
|
1655 |
|
|
WRITE_POINTER : out STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0)
|
1656 |
|
|
|
1657 |
|
|
);
|
1658 |
|
|
end WRITE_POINTER_CTRL_V2;
|
1659 |
|
|
|
1660 |
|
|
architecture LATTICE_BEHAV of WRITE_POINTER_CTRL_V2 is
|
1661 |
|
|
|
1662 |
|
|
signal s_WRITE_POINTER : STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0):= (others => '0');
|
1663 |
|
|
|
1664 |
|
|
begin
|
1665 |
|
|
|
1666 |
|
|
WRITE_POINTER <= s_WRITE_POINTER;
|
1667 |
|
|
|
1668 |
|
|
process (GLOBAL_RST, WRITE_EN, WRITE_CLK)
|
1669 |
|
|
|
1670 |
|
|
variable v_WRITE_POINTER: STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0):= (others => '0');
|
1671 |
|
|
|
1672 |
|
|
begin
|
1673 |
|
|
if GLOBAL_RST = '1' then
|
1674 |
|
|
s_WRITE_POINTER <= TERMINAL_COUNT ;
|
1675 |
|
|
|
1676 |
|
|
elsif (WRITE_CLK'EVENT and WRITE_CLK = '1') then
|
1677 |
|
|
if (WRITE_EN = '1' and FULL_FLAG /= '1') then
|
1678 |
|
|
v_WRITE_POINTER := s_WRITE_POINTER + '1';
|
1679 |
|
|
else
|
1680 |
|
|
v_WRITE_POINTER := s_WRITE_POINTER ;
|
1681 |
|
|
end if;
|
1682 |
|
|
|
1683 |
|
|
if (v_WRITE_POINTER = TERMINAL_COUNT + 1) then
|
1684 |
|
|
s_WRITE_POINTER <= (others => '0');
|
1685 |
|
|
else
|
1686 |
|
|
s_WRITE_POINTER <= v_WRITE_POINTER ;
|
1687 |
|
|
end if;
|
1688 |
|
|
end if;
|
1689 |
|
|
end process;
|
1690 |
|
|
end LATTICE_BEHAV;
|
1691 |
|
|
|
1692 |
|
|
-- ************************************************************************
|
1693 |
|
|
-- FIFO V2 COMPONENTS FLAG LOGIC
|
1694 |
|
|
-- ************************************************************************
|
1695 |
|
|
library ieee;
|
1696 |
|
|
use ieee.std_logic_1164.all;
|
1697 |
|
|
use ieee.std_logic_arith.all;
|
1698 |
|
|
use ieee.std_logic_unsigned.all;
|
1699 |
|
|
use ieee.math_real.all;
|
1700 |
|
|
|
1701 |
|
|
entity FLAG_LOGIC_V2 is
|
1702 |
|
|
generic (
|
1703 |
|
|
WDATA_WIDTH : integer := 32;
|
1704 |
|
|
RDATA_WIDTH : integer := 32;
|
1705 |
|
|
AMFULL_X : integer := 1;
|
1706 |
|
|
AMEMPTY_Y : integer := 1
|
1707 |
|
|
);
|
1708 |
|
|
port (
|
1709 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1710 |
|
|
FIFO_CAP : in integer ;
|
1711 |
|
|
FIFO_PTR : in integer ;
|
1712 |
|
|
FULL_D : out STD_LOGIC ;
|
1713 |
|
|
EMPTY_D : out STD_LOGIC ;
|
1714 |
|
|
AMFULL_D : out STD_LOGIC ;
|
1715 |
|
|
AMEMPTY_D : out STD_LOGIC
|
1716 |
|
|
);
|
1717 |
|
|
end FLAG_LOGIC_V2;
|
1718 |
|
|
|
1719 |
|
|
architecture LATTICE_BEHAV of FLAG_LOGIC_V2 is
|
1720 |
|
|
|
1721 |
|
|
begin
|
1722 |
|
|
--------------------------------------------------------------------------
|
1723 |
|
|
-- Function: Main Process
|
1724 |
|
|
-- Description:
|
1725 |
|
|
--------------------------------------------------------------------------
|
1726 |
|
|
FULL_AMFULL_EMPTY_AMEMPTY: process (GLOBAL_RST, FIFO_CAP, FIFO_PTR)
|
1727 |
|
|
|
1728 |
|
|
begin
|
1729 |
|
|
|
1730 |
|
|
if GLOBAL_RST = '1' then
|
1731 |
|
|
FULL_D <= '0';
|
1732 |
|
|
AMFULL_D <= '0';
|
1733 |
|
|
EMPTY_D <= '0';
|
1734 |
|
|
AMEMPTY_D <= '0';
|
1735 |
|
|
else
|
1736 |
|
|
if (FIFO_CAP - FIFO_PTR < WDATA_WIDTH) then
|
1737 |
|
|
FULL_D <= '1';
|
1738 |
|
|
else
|
1739 |
|
|
FULL_D <= '0';
|
1740 |
|
|
end if;
|
1741 |
|
|
|
1742 |
|
|
if (FIFO_CAP - FIFO_PTR < WDATA_WIDTH + AMFULL_X * WDATA_WIDTH) then
|
1743 |
|
|
AMFULL_D <= '1';
|
1744 |
|
|
else
|
1745 |
|
|
AMFULL_D <= '0';
|
1746 |
|
|
end if;
|
1747 |
|
|
|
1748 |
|
|
if (FIFO_PTR < RDATA_WIDTH) then
|
1749 |
|
|
EMPTY_D <= '0';
|
1750 |
|
|
else
|
1751 |
|
|
EMPTY_D <= '1';
|
1752 |
|
|
end if;
|
1753 |
|
|
|
1754 |
|
|
if (FIFO_PTR < RDATA_WIDTH + AMEMPTY_Y * RDATA_WIDTH) then
|
1755 |
|
|
AMEMPTY_D <= '0';
|
1756 |
|
|
else
|
1757 |
|
|
AMEMPTY_D <= '1';
|
1758 |
|
|
end if;
|
1759 |
|
|
end if;
|
1760 |
|
|
|
1761 |
|
|
end process FULL_AMFULL_EMPTY_AMEMPTY;
|
1762 |
|
|
|
1763 |
|
|
end LATTICE_BEHAV;
|
1764 |
|
|
|
1765 |
|
|
|
1766 |
|
|
-- ************************************************************************
|
1767 |
|
|
-- FIFO V2 Main Body
|
1768 |
|
|
-- READ_POINTER_CTRL_V2
|
1769 |
|
|
-- WRITE_POINTER_CTRL_V2
|
1770 |
|
|
-- FLAG_LOGIC_V2
|
1771 |
|
|
-- SC_BRAM_16K
|
1772 |
|
|
-- ************************************************************************
|
1773 |
|
|
-- ************************************************************************
|
1774 |
|
|
-- Top Design Entity definition
|
1775 |
|
|
-- ************************************************************************
|
1776 |
|
|
|
1777 |
|
|
library ieee;
|
1778 |
|
|
use ieee.std_logic_1164.all;
|
1779 |
|
|
use ieee.std_logic_arith.all;
|
1780 |
|
|
use ieee.std_logic_unsigned.all;
|
1781 |
|
|
|
1782 |
|
|
entity SC_FIFO_V2_16K_L is
|
1783 |
|
|
|
1784 |
|
|
generic (
|
1785 |
|
|
TERMINAL_COUNT : integer := 511; --QQ: Word number < 2**WADDR_WIDTH
|
1786 |
|
|
WADDR_WIDTH : integer := 9;
|
1787 |
|
|
WDATA_WIDTH : integer := 32;
|
1788 |
|
|
RADDR_WIDTH : integer := 8;
|
1789 |
|
|
RDATA_WIDTH : integer := 64;
|
1790 |
|
|
ALMOST_FULL_X : integer := 2;
|
1791 |
|
|
ALMOST_EMPTY_Y : integer := 2;
|
1792 |
|
|
MEM_INIT_FLAG : integer := 0;
|
1793 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
1794 |
|
|
|
1795 |
|
|
);
|
1796 |
|
|
|
1797 |
|
|
port (
|
1798 |
|
|
WE : in STD_LOGIC ;
|
1799 |
|
|
WCLK : in STD_LOGIC ;
|
1800 |
|
|
RST : in STD_LOGIC ;
|
1801 |
|
|
RPRST : in STD_LOGIC ;
|
1802 |
|
|
RE : in STD_LOGIC ;
|
1803 |
|
|
RCLK : in STD_LOGIC ;
|
1804 |
|
|
FULLIN : in STD_LOGIC ;
|
1805 |
|
|
EMPTYIN : in STD_LOGIC ;
|
1806 |
|
|
DI : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
1807 |
|
|
|
1808 |
|
|
FULL : out STD_LOGIC ;
|
1809 |
|
|
EMPTY : out STD_LOGIC ;
|
1810 |
|
|
AMFULL : out STD_LOGIC ;
|
1811 |
|
|
AMEMPTY : out STD_LOGIC ;
|
1812 |
|
|
DO : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
1813 |
|
|
|
1814 |
|
|
);
|
1815 |
|
|
|
1816 |
|
|
end SC_FIFO_V2_16K_L ;
|
1817 |
|
|
|
1818 |
|
|
-- ************************************************************************
|
1819 |
|
|
-- architecture
|
1820 |
|
|
-- ************************************************************************
|
1821 |
|
|
|
1822 |
|
|
architecture LATTICE_BEHAV of SC_FIFO_V2_16K_L is
|
1823 |
|
|
|
1824 |
|
|
---------------------------------------------------------
|
1825 |
|
|
-- Function: TO_STD_VECTOR
|
1826 |
|
|
---------------------------------------------------------
|
1827 |
|
|
function TO_STD_VECTOR ( INPUT_STRING : string; INPUT_LENGTH: integer)
|
1828 |
|
|
return std_logic_vector is
|
1829 |
|
|
|
1830 |
|
|
variable vDATA_STD_VEC: std_logic_vector(INPUT_LENGTH -1 downto 0) := (others => '0');
|
1831 |
|
|
variable vTRANS: string(INPUT_LENGTH downto 1) := (others => '0');
|
1832 |
|
|
|
1833 |
|
|
begin
|
1834 |
|
|
vTRANS := INPUT_STRING;
|
1835 |
|
|
|
1836 |
|
|
for i in INPUT_LENGTH downto 1 loop
|
1837 |
|
|
if (vTRANS(i) = '1') then
|
1838 |
|
|
vDATA_STD_VEC(i-1) := '1';
|
1839 |
|
|
elsif ( vTRANS(i) ='0') then
|
1840 |
|
|
vDATA_STD_VEC(i-1) := '0';
|
1841 |
|
|
end if;
|
1842 |
|
|
end loop;
|
1843 |
|
|
return vDATA_STD_VEC;
|
1844 |
|
|
end TO_STD_VECTOR;
|
1845 |
|
|
|
1846 |
|
|
---------------------------------------------------------
|
1847 |
|
|
-- Components Definition
|
1848 |
|
|
---------------------------------------------------------
|
1849 |
|
|
|
1850 |
|
|
component SC_BRAM_16K_L
|
1851 |
|
|
|
1852 |
|
|
generic (
|
1853 |
|
|
WADDR_WIDTH_A : integer := 14;
|
1854 |
|
|
RADDR_WIDTH_A : integer := 12;
|
1855 |
|
|
WADDR_WIDTH_B : integer := 14;
|
1856 |
|
|
RADDR_WIDTH_B : integer := 12;
|
1857 |
|
|
WDATA_WIDTH_A : integer := 1;
|
1858 |
|
|
RDATA_WIDTH_A : integer := 4;
|
1859 |
|
|
WDATA_WIDTH_B : integer := 1;
|
1860 |
|
|
RDATA_WIDTH_B : integer := 4;
|
1861 |
|
|
ARRAY_SIZE : integer := 16384;
|
1862 |
|
|
MEM_INIT_FLAG : integer := 0;
|
1863 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
1864 |
|
|
|
1865 |
|
|
);
|
1866 |
|
|
|
1867 |
|
|
port (
|
1868 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
1869 |
|
|
WEA : in STD_LOGIC ;
|
1870 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
1871 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
1872 |
|
|
REA : in STD_LOGIC ;
|
1873 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
1874 |
|
|
|
1875 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
1876 |
|
|
WEB : in STD_LOGIC;
|
1877 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
1878 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
1879 |
|
|
REB : in STD_LOGIC;
|
1880 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
|
1881 |
|
|
);
|
1882 |
|
|
end component;
|
1883 |
|
|
|
1884 |
|
|
component READ_POINTER_CTRL_V2
|
1885 |
|
|
|
1886 |
|
|
generic (
|
1887 |
|
|
RPOINTER_WIDTH : integer := 9
|
1888 |
|
|
);
|
1889 |
|
|
port (
|
1890 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(RPOINTER_WIDTH -1 downto 0);
|
1891 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1892 |
|
|
RESET_RP : in STD_LOGIC ;
|
1893 |
|
|
READ_EN : in STD_LOGIC ;
|
1894 |
|
|
READ_CLK : in STD_LOGIC ;
|
1895 |
|
|
EMPTY_FLAG : in STD_LOGIC ;
|
1896 |
|
|
READ_POINTER : out STD_LOGIC_VECTOR (RPOINTER_WIDTH -1 downto 0)
|
1897 |
|
|
);
|
1898 |
|
|
end component;
|
1899 |
|
|
|
1900 |
|
|
component WRITE_POINTER_CTRL_V2
|
1901 |
|
|
generic (
|
1902 |
|
|
WPOINTER_WIDTH : integer := 9;
|
1903 |
|
|
WDATA_WIDTH : integer := 32
|
1904 |
|
|
);
|
1905 |
|
|
port (
|
1906 |
|
|
TERMINAL_COUNT : in STD_LOGIC_VECTOR(WPOINTER_WIDTH -1 downto 0);
|
1907 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1908 |
|
|
WRITE_EN : in STD_LOGIC ;
|
1909 |
|
|
WRITE_CLK : in STD_LOGIC ;
|
1910 |
|
|
FULL_FLAG : in STD_LOGIC ;
|
1911 |
|
|
WRITE_POINTER : out STD_LOGIC_VECTOR (WPOINTER_WIDTH -1 downto 0)
|
1912 |
|
|
);
|
1913 |
|
|
end component;
|
1914 |
|
|
|
1915 |
|
|
component FLAG_LOGIC_V2
|
1916 |
|
|
generic (
|
1917 |
|
|
WDATA_WIDTH : integer := 32;
|
1918 |
|
|
RDATA_WIDTH : integer := 32;
|
1919 |
|
|
AMFULL_X : integer := 1;
|
1920 |
|
|
AMEMPTY_Y : integer := 1
|
1921 |
|
|
);
|
1922 |
|
|
port (
|
1923 |
|
|
GLOBAL_RST : in STD_LOGIC ;
|
1924 |
|
|
FIFO_CAP : in integer ;
|
1925 |
|
|
FIFO_PTR : in integer ;
|
1926 |
|
|
FULL_D : out STD_LOGIC ;
|
1927 |
|
|
EMPTY_D : out STD_LOGIC ;
|
1928 |
|
|
AMFULL_D : out STD_LOGIC ;
|
1929 |
|
|
AMEMPTY_D : out STD_LOGIC
|
1930 |
|
|
);
|
1931 |
|
|
end component;
|
1932 |
|
|
-- Signal Declaration
|
1933 |
|
|
|
1934 |
|
|
signal WE_node : STD_LOGIC := 'X';
|
1935 |
|
|
signal WCLK_node : STD_LOGIC := 'X';
|
1936 |
|
|
signal RST_node : STD_LOGIC := 'X';
|
1937 |
|
|
signal RPRST_node : STD_LOGIC := 'X';
|
1938 |
|
|
signal RE_node : STD_LOGIC := 'X';
|
1939 |
|
|
signal RCLK_node : STD_LOGIC := 'X';
|
1940 |
|
|
signal FULLIN_node : STD_LOGIC := 'X';
|
1941 |
|
|
signal EMPTYIN_node : STD_LOGIC := 'X';
|
1942 |
|
|
signal DI_node : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => 'X');
|
1943 |
|
|
|
1944 |
|
|
signal DI_reg : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => 'X');
|
1945 |
|
|
signal WE_reg : STD_LOGIC := 'X';
|
1946 |
|
|
signal RE_reg : STD_LOGIC := 'X';
|
1947 |
|
|
signal FULLIN_reg : STD_LOGIC := 'X';
|
1948 |
|
|
signal EMPTYIN_reg : STD_LOGIC := 'X';
|
1949 |
|
|
|
1950 |
|
|
signal FULL_node : STD_LOGIC := 'X';
|
1951 |
|
|
signal EMPTY_node : STD_LOGIC := 'X';
|
1952 |
|
|
signal AMFULL_node : STD_LOGIC := 'X';
|
1953 |
|
|
signal AMEMPTY_node : STD_LOGIC := 'X';
|
1954 |
|
|
signal DO_node : STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0) := (others => 'X');
|
1955 |
|
|
|
1956 |
|
|
signal TC_W_node : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => 'X');
|
1957 |
|
|
signal TC_R_node : STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0) := (others => 'X');
|
1958 |
|
|
|
1959 |
|
|
signal FULL_reg : STD_LOGIC := 'X';
|
1960 |
|
|
signal EMPTY_reg : STD_LOGIC := 'X';
|
1961 |
|
|
signal AMFULL_reg : STD_LOGIC := 'X';
|
1962 |
|
|
signal AMEMPTY_reg : STD_LOGIC := 'X';
|
1963 |
|
|
|
1964 |
|
|
signal RP_node : STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0) := (others => 'X');
|
1965 |
|
|
signal WP_node : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => '0');
|
1966 |
|
|
signal GND_sig : STD_LOGIC := 'X';
|
1967 |
|
|
|
1968 |
|
|
--QQ FIFOV2
|
1969 |
|
|
signal FIFO_capacity : integer := 0;
|
1970 |
|
|
signal FIFO_pointer : integer := 0;
|
1971 |
|
|
-- architecture
|
1972 |
|
|
|
1973 |
|
|
begin
|
1974 |
|
|
FIFO_capacity <= (TERMINAL_COUNT + 1) * WDATA_WIDTH;
|
1975 |
|
|
|
1976 |
|
|
GND_sig <= '0';
|
1977 |
|
|
WE_node <= WE and not (FULL_node);
|
1978 |
|
|
WCLK_node <= WCLK;
|
1979 |
|
|
RST_node <= RST;
|
1980 |
|
|
RPRST_node <= RPRST;
|
1981 |
|
|
RE_node <= RE;
|
1982 |
|
|
RCLK_node <= RCLK;
|
1983 |
|
|
FULLIN_node <= FULLIN;
|
1984 |
|
|
EMPTYIN_node <= EMPTYIN;
|
1985 |
|
|
DI_node <= DI;
|
1986 |
|
|
|
1987 |
|
|
TC_W_node <= CONV_STD_LOGIC_VECTOR(TERMINAL_COUNT,WADDR_WIDTH);
|
1988 |
|
|
TC_R_node <= CONV_STD_LOGIC_VECTOR((TERMINAL_COUNT+1)*(WDATA_WIDTH/RDATA_WIDTH)-1,RADDR_WIDTH);
|
1989 |
|
|
|
1990 |
|
|
|
1991 |
|
|
--FULL <= FULL_node;
|
1992 |
|
|
FULL <= FULL_node when (RE_node = '0') else FULL_reg;
|
1993 |
|
|
--AMFULL <= AMFULL_node;
|
1994 |
|
|
AMFULL <= AMFULL_node when (RE_node = '0') else AMFULL_reg;
|
1995 |
|
|
EMPTY <= not EMPTY_node;
|
1996 |
|
|
AMEMPTY <= not AMEMPTY_node;
|
1997 |
|
|
|
1998 |
|
|
DO <= DO_node;
|
1999 |
|
|
|
2000 |
|
|
-- Register Port DI inputs
|
2001 |
|
|
register_DI_inputs: process (RST_node, WCLK_node)
|
2002 |
|
|
begin
|
2003 |
|
|
if (RST_node = '1') then
|
2004 |
|
|
DI_reg <= (others =>'0');
|
2005 |
|
|
elsif (WCLK_node'event and WCLK_node = '1') then
|
2006 |
|
|
if (WE_node = '1') then
|
2007 |
|
|
DI_reg <= DI_node after 1 ps;
|
2008 |
|
|
end if;
|
2009 |
|
|
end if;
|
2010 |
|
|
end process register_DI_inputs;
|
2011 |
|
|
|
2012 |
|
|
-- Register flag inputs
|
2013 |
|
|
register_flag_inputs: process (RST_node, WCLK_node, RCLK_node)
|
2014 |
|
|
begin
|
2015 |
|
|
if (RST_node = '1') then
|
2016 |
|
|
FULLIN_reg <= '0';
|
2017 |
|
|
EMPTYIN_reg <= '0';
|
2018 |
|
|
WE_reg <= '0';
|
2019 |
|
|
RE_reg <= '0';
|
2020 |
|
|
else
|
2021 |
|
|
|
2022 |
|
|
if (WCLK_node'event and WCLK_node = '1') then
|
2023 |
|
|
WE_reg <= WE_node and not FULL_reg; --Fix DTS14659
|
2024 |
|
|
--WE_reg <= WE_node;
|
2025 |
|
|
if (WE_node = '1') then
|
2026 |
|
|
FULLIN_reg <= FULLIN_node;
|
2027 |
|
|
end if;
|
2028 |
|
|
end if;
|
2029 |
|
|
|
2030 |
|
|
if (RCLK_node'event and RCLK_node = '1') then
|
2031 |
|
|
RE_reg <= RE_node and EMPTY_reg;
|
2032 |
|
|
if (RE_node = '1') then
|
2033 |
|
|
EMPTYIN_reg <= EMPTYIN_node;
|
2034 |
|
|
end if;
|
2035 |
|
|
end if;
|
2036 |
|
|
|
2037 |
|
|
end if;
|
2038 |
|
|
end process register_flag_inputs;
|
2039 |
|
|
|
2040 |
|
|
-- Register flag outputs
|
2041 |
|
|
register_flag_outputs: process (RST_node, WCLK_node, RCLK_node)
|
2042 |
|
|
begin
|
2043 |
|
|
if (RST_node = '1') then
|
2044 |
|
|
FULL_node <= '0';
|
2045 |
|
|
AMFULL_node <= '0';
|
2046 |
|
|
EMPTY_node <= '0';
|
2047 |
|
|
AMEMPTY_node <= '0';
|
2048 |
|
|
else
|
2049 |
|
|
if (WCLK_node'event and WCLK_node = '1') then
|
2050 |
|
|
FULL_node <= FULL_reg;
|
2051 |
|
|
AMFULL_node <= AMFULL_reg;
|
2052 |
|
|
end if;
|
2053 |
|
|
if (RCLK_node'event and RCLK_node = '1') then
|
2054 |
|
|
EMPTY_node <= EMPTY_reg;
|
2055 |
|
|
AMEMPTY_node <= AMEMPTY_reg;
|
2056 |
|
|
end if;
|
2057 |
|
|
end if;
|
2058 |
|
|
end process register_flag_outputs;
|
2059 |
|
|
|
2060 |
|
|
-- Set FIFO_pointer
|
2061 |
|
|
FIFO_CAP_POINTER: process ( RP_node, WP_node, RST_node, RPRST_node)
|
2062 |
|
|
begin
|
2063 |
|
|
--WP ++, FIFO_CAP --
|
2064 |
|
|
if (WP_node'event and RP_node'event) then
|
2065 |
|
|
FIFO_pointer <= FIFO_pointer + WDATA_WIDTH - RDATA_WIDTH;
|
2066 |
|
|
elsif(WP_node'event) then
|
2067 |
|
|
FIFO_pointer <= FIFO_pointer + WDATA_WIDTH;
|
2068 |
|
|
end if;
|
2069 |
|
|
--RPRST Active, FIFO_CAP --
|
2070 |
|
|
--RP ++, FIFO_CAP ++
|
2071 |
|
|
if (RST_node = '1') then
|
2072 |
|
|
FIFO_pointer <= 0;
|
2073 |
|
|
elsif (RPRST_node = '1') then
|
2074 |
|
|
FIFO_pointer <= (CONV_INTEGER(WP_node)+1) * WDATA_WIDTH;
|
2075 |
|
|
elsif (RP_node'event and not(WP_node'event)) then
|
2076 |
|
|
FIFO_pointer <= FIFO_pointer - RDATA_WIDTH;
|
2077 |
|
|
end if;
|
2078 |
|
|
end process FIFO_CAP_POINTER;
|
2079 |
|
|
|
2080 |
|
|
|
2081 |
|
|
-- READ_POINTER_CTRL_V2 instance for FIFO
|
2082 |
|
|
FIFO_RPC_INST: READ_POINTER_CTRL_V2
|
2083 |
|
|
generic map (
|
2084 |
|
|
RPOINTER_WIDTH => RADDR_WIDTH
|
2085 |
|
|
)
|
2086 |
|
|
port map (
|
2087 |
|
|
TERMINAL_COUNT => TC_R_node,
|
2088 |
|
|
GLOBAL_RST => RST_node,
|
2089 |
|
|
RESET_RP => RPRST_node,
|
2090 |
|
|
READ_EN => RE_node,
|
2091 |
|
|
READ_CLK => RCLK_node,
|
2092 |
|
|
EMPTY_FLAG => EMPTY_reg,
|
2093 |
|
|
READ_POINTER => RP_node
|
2094 |
|
|
);
|
2095 |
|
|
|
2096 |
|
|
-- WRITE_POINTER_CTRL_V2 instance for FIFO
|
2097 |
|
|
FIFO_WPC_INST: WRITE_POINTER_CTRL_V2
|
2098 |
|
|
generic map (
|
2099 |
|
|
WPOINTER_WIDTH => WADDR_WIDTH,
|
2100 |
|
|
WDATA_WIDTH => WDATA_WIDTH
|
2101 |
|
|
)
|
2102 |
|
|
port map (
|
2103 |
|
|
TERMINAL_COUNT => TC_W_node,
|
2104 |
|
|
GLOBAL_RST => RST_node,
|
2105 |
|
|
WRITE_EN => WE_node,
|
2106 |
|
|
WRITE_CLK => WCLK_node,
|
2107 |
|
|
FULL_FLAG => FULL_reg,
|
2108 |
|
|
WRITE_POINTER => WP_node
|
2109 |
|
|
);
|
2110 |
|
|
|
2111 |
|
|
-- FLAG_LOGIC_V2 instance for FIFO
|
2112 |
|
|
FIFO_FL_INST: FLAG_LOGIC_V2
|
2113 |
|
|
generic map (
|
2114 |
|
|
WDATA_WIDTH => WDATA_WIDTH,
|
2115 |
|
|
RDATA_WIDTH => RDATA_WIDTH,
|
2116 |
|
|
AMFULL_X => ALMOST_FULL_X,
|
2117 |
|
|
AMEMPTY_Y => ALMOST_EMPTY_Y
|
2118 |
|
|
)
|
2119 |
|
|
port map(
|
2120 |
|
|
GLOBAL_RST => RST_node,
|
2121 |
|
|
FIFO_CAP => FIFO_capacity,
|
2122 |
|
|
FIFO_PTR => FIFO_pointer,
|
2123 |
|
|
FULL_D => FULL_reg,
|
2124 |
|
|
EMPTY_D => EMPTY_reg,
|
2125 |
|
|
AMFULL_D => AMFULL_reg,
|
2126 |
|
|
AMEMPTY_D => AMEMPTY_reg
|
2127 |
|
|
);
|
2128 |
|
|
|
2129 |
|
|
-- BRAM instance for FIFO
|
2130 |
|
|
FIFO_BRAM_INST: SC_BRAM_16K_L
|
2131 |
|
|
|
2132 |
|
|
generic map(
|
2133 |
|
|
WADDR_WIDTH_A => WADDR_WIDTH,
|
2134 |
|
|
RADDR_WIDTH_A => RADDR_WIDTH,
|
2135 |
|
|
WADDR_WIDTH_B => WADDR_WIDTH,
|
2136 |
|
|
RADDR_WIDTH_B => RADDR_WIDTH,
|
2137 |
|
|
WDATA_WIDTH_A => WDATA_WIDTH,
|
2138 |
|
|
RDATA_WIDTH_A => RDATA_WIDTH,
|
2139 |
|
|
WDATA_WIDTH_B => WDATA_WIDTH,
|
2140 |
|
|
RDATA_WIDTH_B => RDATA_WIDTH,
|
2141 |
|
|
ARRAY_SIZE => open,
|
2142 |
|
|
MEM_INIT_FLAG => MEM_INIT_FLAG,
|
2143 |
|
|
MEM_INIT_FILE => MEM_INIT_FILE
|
2144 |
|
|
|
2145 |
|
|
)
|
2146 |
|
|
port map (
|
2147 |
|
|
WADA => WP_node,
|
2148 |
|
|
WEA => WE_reg,
|
2149 |
|
|
WDA => DI_reg,
|
2150 |
|
|
RADA => RP_node,
|
2151 |
|
|
REA => RE_reg,
|
2152 |
|
|
RDA => DO_node,
|
2153 |
|
|
|
2154 |
|
|
WADB => WP_node,
|
2155 |
|
|
WEB => GND_sig,
|
2156 |
|
|
WDB => DI_reg,
|
2157 |
|
|
RADB => RP_node,
|
2158 |
|
|
REB => GND_sig,
|
2159 |
|
|
RDB => open
|
2160 |
|
|
);
|
2161 |
|
|
|
2162 |
|
|
end LATTICE_BEHAV;
|
2163 |
|
|
-- ************************************************************************
|
2164 |
|
|
--
|
2165 |
|
|
-- DPRAM: Behavioral Model
|
2166 |
|
|
-- ************************************************************************
|
2167 |
|
|
--
|
2168 |
|
|
-- Filename: SC_DP_RAM.vhd
|
2169 |
|
|
-- Description: Single Port BRAM behavioral model.
|
2170 |
|
|
-- History:
|
2171 |
|
|
-- May. 30, 2002 Read memory initialization file feature
|
2172 |
|
|
-- ************************************************************************
|
2173 |
|
|
|
2174 |
|
|
LIBRARY ieee, std;
|
2175 |
|
|
USE ieee.std_logic_1164.ALL;
|
2176 |
|
|
USE ieee.std_logic_unsigned.ALL;
|
2177 |
|
|
USE std.textio.all;
|
2178 |
|
|
USE work.components.all;
|
2179 |
|
|
|
2180 |
|
|
-- ************************************************************************
|
2181 |
|
|
-- Entity definition
|
2182 |
|
|
-- Draft "generic" members
|
2183 |
|
|
-- ************************************************************************
|
2184 |
|
|
|
2185 |
|
|
entity SC_DPRAM_16K_L is
|
2186 |
|
|
|
2187 |
|
|
generic (
|
2188 |
|
|
AWRITE_MODE : string := "NORMAL";
|
2189 |
|
|
BWRITE_MODE : string := "NORMAL";
|
2190 |
|
|
ADDR_WIDTH_A : integer := 13;
|
2191 |
|
|
DATA_WIDTH_A : integer := 2;
|
2192 |
|
|
ADDR_WIDTH_B : integer := 14;
|
2193 |
|
|
DATA_WIDTH_B : integer := 1;
|
2194 |
|
|
MEM_INIT_FLAG : integer := 1;
|
2195 |
|
|
ARRAY_SIZE : integer := 16384;
|
2196 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
2197 |
|
|
|
2198 |
|
|
);
|
2199 |
|
|
|
2200 |
|
|
port (
|
2201 |
|
|
CENA : in STD_LOGIC ;
|
2202 |
|
|
CLKA : in STD_LOGIC ;
|
2203 |
|
|
WRA : in STD_LOGIC ;
|
2204 |
|
|
CSA : in STD_LOGIC_VECTOR (1 downto 0);
|
2205 |
|
|
RSTA : in STD_LOGIC ;
|
2206 |
|
|
DIA : in STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0);
|
2207 |
|
|
ADA : in STD_LOGIC_VECTOR (ADDR_WIDTH_A -1 downto 0);
|
2208 |
|
|
DOA : out STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0);
|
2209 |
|
|
|
2210 |
|
|
CENB : in STD_LOGIC ;
|
2211 |
|
|
CLKB : in STD_LOGIC ;
|
2212 |
|
|
WRB : in STD_LOGIC ;
|
2213 |
|
|
CSB : in STD_LOGIC_VECTOR (1 downto 0);
|
2214 |
|
|
RSTB : in STD_LOGIC ;
|
2215 |
|
|
DIB : in STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0);
|
2216 |
|
|
ADB : in STD_LOGIC_VECTOR (ADDR_WIDTH_B -1 downto 0);
|
2217 |
|
|
DOB : out STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0)
|
2218 |
|
|
|
2219 |
|
|
);
|
2220 |
|
|
|
2221 |
|
|
end SC_DPRAM_16K_L ;
|
2222 |
|
|
|
2223 |
|
|
-- ************************************************************************
|
2224 |
|
|
-- architecture
|
2225 |
|
|
-- ************************************************************************
|
2226 |
|
|
|
2227 |
|
|
architecture LATTICE_BEHAV of SC_DPRAM_16K_L is
|
2228 |
|
|
|
2229 |
|
|
component SC_BRAM_16K_L
|
2230 |
|
|
|
2231 |
|
|
generic (
|
2232 |
|
|
AWRITE_MODE : string := "NORMAL";
|
2233 |
|
|
BWRITE_MODE : string := "NORMAL";
|
2234 |
|
|
WADDR_WIDTH_A : integer := 14;
|
2235 |
|
|
RADDR_WIDTH_A : integer := 12;
|
2236 |
|
|
WADDR_WIDTH_B : integer := 14;
|
2237 |
|
|
RADDR_WIDTH_B : integer := 12;
|
2238 |
|
|
WDATA_WIDTH_A : integer := 1;
|
2239 |
|
|
RDATA_WIDTH_A : integer := 4;
|
2240 |
|
|
WDATA_WIDTH_B : integer := 1;
|
2241 |
|
|
RDATA_WIDTH_B : integer := 4;
|
2242 |
|
|
ARRAY_SIZE : integer := 16384;
|
2243 |
|
|
MEM_INIT_FLAG : integer := 0;
|
2244 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
2245 |
|
|
|
2246 |
|
|
);
|
2247 |
|
|
|
2248 |
|
|
port (
|
2249 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
2250 |
|
|
WEA : in STD_LOGIC ;
|
2251 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
2252 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
2253 |
|
|
REA : in STD_LOGIC ;
|
2254 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
2255 |
|
|
|
2256 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
2257 |
|
|
WEB : in STD_LOGIC;
|
2258 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
2259 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
2260 |
|
|
REB : in STD_LOGIC;
|
2261 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
|
2262 |
|
|
);
|
2263 |
|
|
end component;
|
2264 |
|
|
|
2265 |
|
|
procedure READ_MEM_INIT_FILE(
|
2266 |
|
|
f_name : IN STRING;
|
2267 |
|
|
v_MEM : OUT STD_LOGIC_VECTOR
|
2268 |
|
|
) IS
|
2269 |
|
|
|
2270 |
|
|
file f_INIT_FILE : TEXT is MEM_INIT_FILE;
|
2271 |
|
|
variable v_WORD : line;
|
2272 |
|
|
variable v_GOODFLAG : boolean;
|
2273 |
|
|
variable v_WORD_BIT : string (DATA_WIDTH_A downto 1) ;
|
2274 |
|
|
variable v_CHAR : character;
|
2275 |
|
|
variable v_OFFSET : integer := 0;
|
2276 |
|
|
variable v_LINE : integer := 0;
|
2277 |
|
|
|
2278 |
|
|
begin
|
2279 |
|
|
|
2280 |
|
|
while ( not(endfile(f_INIT_FILE)) and (v_LINE < 2**ADDR_WIDTH_A)) loop
|
2281 |
|
|
|
2282 |
|
|
readline(f_INIT_FILE, v_WORD);
|
2283 |
|
|
read(v_WORD, v_WORD_BIT, v_GOODFLAG);
|
2284 |
|
|
|
2285 |
|
|
for k in 0 to DATA_WIDTH_A - 1 loop
|
2286 |
|
|
v_CHAR := v_WORD_BIT (k + 1);
|
2287 |
|
|
if (v_CHAR = '1') then
|
2288 |
|
|
v_MEM(v_OFFSET + k) := '1';
|
2289 |
|
|
|
2290 |
|
|
elsif (v_CHAR = '0') then
|
2291 |
|
|
v_MEM(v_OFFSET + k) := '0';
|
2292 |
|
|
|
2293 |
|
|
-- else
|
2294 |
|
|
-- v_MEM(v_OFFSET + k) := 'X';
|
2295 |
|
|
|
2296 |
|
|
end if;
|
2297 |
|
|
end loop;
|
2298 |
|
|
|
2299 |
|
|
v_LINE := v_LINE + 1;
|
2300 |
|
|
v_OFFSET := v_OFFSET + DATA_WIDTH_A;
|
2301 |
|
|
|
2302 |
|
|
end loop;
|
2303 |
|
|
|
2304 |
|
|
end READ_MEM_INIT_FILE;
|
2305 |
|
|
|
2306 |
|
|
-- Signal Declaration
|
2307 |
|
|
|
2308 |
|
|
signal CENA_node : STD_LOGIC := 'X';
|
2309 |
|
|
signal CLKA_node : STD_LOGIC := 'X';
|
2310 |
|
|
signal WRA_node : STD_LOGIC := 'X';
|
2311 |
|
|
signal CSA_node : STD_LOGIC_VECTOR (1 downto 0) := (others => 'X');
|
2312 |
|
|
signal RSTA_node : STD_LOGIC := 'X';
|
2313 |
|
|
signal DIA_node : STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0) := (others => 'X');
|
2314 |
|
|
signal ADA_node : STD_LOGIC_VECTOR (ADDR_WIDTH_A -1 downto 0) := (others => '0');
|
2315 |
|
|
signal DOA_node : STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0) := (others => 'X');
|
2316 |
|
|
|
2317 |
|
|
signal DIA_reg : STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0) := (others => 'X');
|
2318 |
|
|
signal ADA_reg : STD_LOGIC_VECTOR (ADDR_WIDTH_A -1 downto 0) := (others => 'X');
|
2319 |
|
|
signal ENA_reg : STD_LOGIC := 'X';
|
2320 |
|
|
signal RENA_reg : STD_LOGIC := 'X';
|
2321 |
|
|
|
2322 |
|
|
signal CENB_node : STD_LOGIC := 'X';
|
2323 |
|
|
signal CLKB_node : STD_LOGIC := 'X';
|
2324 |
|
|
signal WRB_node : STD_LOGIC := 'X';
|
2325 |
|
|
signal CSB_node : STD_LOGIC_VECTOR (1 downto 0) := (others => 'X');
|
2326 |
|
|
signal RSTB_node : STD_LOGIC := 'X';
|
2327 |
|
|
signal DIB_node : STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0) := (others => 'X');
|
2328 |
|
|
signal ADB_node : STD_LOGIC_VECTOR (ADDR_WIDTH_B -1 downto 0) := (others => 'X');
|
2329 |
|
|
signal DOB_node : STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0) := (others => 'X');
|
2330 |
|
|
|
2331 |
|
|
signal DIB_reg : STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0) := (others => 'X');
|
2332 |
|
|
signal ADB_reg : STD_LOGIC_VECTOR (ADDR_WIDTH_B -1 downto 0) := (others => 'X');
|
2333 |
|
|
signal ENB_reg : STD_LOGIC := 'X';
|
2334 |
|
|
signal RENB_reg : STD_LOGIC := 'X';
|
2335 |
|
|
signal v_MEM : STD_LOGIC_VECTOR(ARRAY_SIZE - 1 downto 0) := ( others => '0' );
|
2336 |
|
|
signal v_ADA : INTEGER;
|
2337 |
|
|
signal v_ADB : INTEGER;
|
2338 |
|
|
|
2339 |
|
|
|
2340 |
|
|
-- architecture
|
2341 |
|
|
|
2342 |
|
|
begin
|
2343 |
|
|
|
2344 |
|
|
CENA_node <= CENA;
|
2345 |
|
|
CLKA_node <= CLKA;
|
2346 |
|
|
WRA_node <= WRA;
|
2347 |
|
|
CSA_node <= CSA;
|
2348 |
|
|
RSTA_node <= RSTA;
|
2349 |
|
|
DIA_node <= DIA;
|
2350 |
|
|
ADA_node <= ADA;
|
2351 |
|
|
-- DOA <= DOA_node;
|
2352 |
|
|
|
2353 |
|
|
CENB_node <= CENB;
|
2354 |
|
|
CLKB_node <= CLKB;
|
2355 |
|
|
WRB_node <= WRB;
|
2356 |
|
|
CSB_node <= CSB;
|
2357 |
|
|
RSTB_node <= RSTB;
|
2358 |
|
|
DIB_node <= DIB;
|
2359 |
|
|
ADB_node <= ADB;
|
2360 |
|
|
-- DOB <= DOB_node;
|
2361 |
|
|
|
2362 |
|
|
init_process : process
|
2363 |
|
|
variable v_INI_DONE : boolean := FALSE;
|
2364 |
|
|
variable v_MEM_i : std_logic_vector(ARRAY_SIZE - 1 downto 0) := ( others => '0' );
|
2365 |
|
|
begin
|
2366 |
|
|
if( MEM_INIT_FLAG = 1 and v_INI_DONE = FALSE) THEN
|
2367 |
|
|
READ_MEM_INIT_FILE(MEM_INIT_FILE, v_MEM_i);
|
2368 |
|
|
v_INI_DONE := TRUE;
|
2369 |
|
|
end if;
|
2370 |
|
|
|
2371 |
|
|
v_MEM <= v_MEM_i;
|
2372 |
|
|
wait;
|
2373 |
|
|
end process;
|
2374 |
|
|
|
2375 |
|
|
process(ADA_node, ADB_node)
|
2376 |
|
|
begin
|
2377 |
|
|
if (Valid_Address(ADA_node) = TRUE) then
|
2378 |
|
|
v_ADA <= CONV_INTEGER(ADA_node);
|
2379 |
|
|
end if;
|
2380 |
|
|
|
2381 |
|
|
if (Valid_Address(ADB_node) = TRUE) then
|
2382 |
|
|
v_ADB <= CONV_INTEGER(ADB_node);
|
2383 |
|
|
end if;
|
2384 |
|
|
end process;
|
2385 |
|
|
|
2386 |
|
|
-- Register Port A DI/ AD / Enable inputs
|
2387 |
|
|
register_A_inputs: process (CLKA_node, RSTA_node)
|
2388 |
|
|
begin
|
2389 |
|
|
if (RSTA_node = '1') then
|
2390 |
|
|
DIA_reg <= (others =>'0');
|
2391 |
|
|
ADA_reg <= (others =>'0');
|
2392 |
|
|
ENA_reg <= '0';
|
2393 |
|
|
RENA_reg <= '1';
|
2394 |
|
|
elsif (CLKA_node'event and CLKA_node = '1') then
|
2395 |
|
|
if (CENA_node = '1') then
|
2396 |
|
|
DIA_reg <= DIA_node;
|
2397 |
|
|
ADA_reg <= ADA_node;
|
2398 |
|
|
ENA_reg <= WRA_node and CSA_node(0) and CSA_node(1);
|
2399 |
|
|
RENA_reg <= '1';
|
2400 |
|
|
end if;
|
2401 |
|
|
end if;
|
2402 |
|
|
end process register_A_inputs;
|
2403 |
|
|
|
2404 |
|
|
-- Register Port B DI/ AD / Enable inputs
|
2405 |
|
|
register_B_inputs: process (CLKB_node, RSTB_node)
|
2406 |
|
|
begin
|
2407 |
|
|
if (RSTB_node = '1') then
|
2408 |
|
|
DIB_reg <= (others =>'0');
|
2409 |
|
|
ADB_reg <= (others =>'0');
|
2410 |
|
|
ENB_reg <= '0';
|
2411 |
|
|
RENB_reg <= '1';
|
2412 |
|
|
elsif (CLKB_node'event and CLKB_node = '1') then
|
2413 |
|
|
if (CENB_node = '1') then
|
2414 |
|
|
DIB_reg <= DIB_node;
|
2415 |
|
|
ADB_reg <= ADB_node;
|
2416 |
|
|
ENB_reg <= WRB_node and CSB_node(0) and CSB_node(1);
|
2417 |
|
|
RENB_reg <= '1';
|
2418 |
|
|
end if;
|
2419 |
|
|
end if;
|
2420 |
|
|
end process register_B_inputs;
|
2421 |
|
|
|
2422 |
|
|
v_MEM_process: process (CLKA_node, CLKB_node)
|
2423 |
|
|
begin
|
2424 |
|
|
if (ENA_reg = '1' and CENA_node = '1') then
|
2425 |
|
|
if (CLKA_node'event and CLKA_node = '1') then
|
2426 |
|
|
for i in 0 to DATA_WIDTH_A - 1 loop
|
2427 |
|
|
v_MEM(v_ADA*DATA_WIDTH_A+i) <= DIA_node(i) after 1 ps;
|
2428 |
|
|
end loop;
|
2429 |
|
|
end if;
|
2430 |
|
|
end if;
|
2431 |
|
|
if (ENB_reg = '1' and CENB_node = '1') then
|
2432 |
|
|
if (CLKB_node'event and CLKB_node = '1') then
|
2433 |
|
|
for i in 0 to DATA_WIDTH_B - 1 loop
|
2434 |
|
|
v_MEM(v_ADB*DATA_WIDTH_B+i) <= DIB_node(i) after 1 ps;
|
2435 |
|
|
end loop;
|
2436 |
|
|
end if;
|
2437 |
|
|
end if;
|
2438 |
|
|
end process;
|
2439 |
|
|
|
2440 |
|
|
DOA_output_process: process (RSTA_node, ENA_reg, CENA_node, DOA_node, CLKA_node)
|
2441 |
|
|
begin
|
2442 |
|
|
if (RSTA_node = '1') then
|
2443 |
|
|
DOA <= (others => '0');
|
2444 |
|
|
elsif (CLKA_node = '1' and CENA_node = '1') then
|
2445 |
|
|
if (ENA_reg = '1') then
|
2446 |
|
|
if (AWRITE_MODE = "RD_BEFORE_WR") then
|
2447 |
|
|
for j in 0 to DATA_WIDTH_A - 1 loop
|
2448 |
|
|
DOA(j) <= v_MEM(v_ADA*DATA_WIDTH_A+j);
|
2449 |
|
|
end loop;
|
2450 |
|
|
else
|
2451 |
|
|
DOA <= DOA_node;
|
2452 |
|
|
end if;
|
2453 |
|
|
else
|
2454 |
|
|
DOA <= DOA_node;
|
2455 |
|
|
end if;
|
2456 |
|
|
end if;
|
2457 |
|
|
end process;
|
2458 |
|
|
|
2459 |
|
|
DOB_output_process: process (RSTB_node, ENB_reg, CENB_node, DOB_node, CLKB_node)
|
2460 |
|
|
begin
|
2461 |
|
|
if (RSTB_node = '1') then
|
2462 |
|
|
DOB <= (others => '0');
|
2463 |
|
|
elsif (CLKB_node = '1' and CENB_node = '1') then
|
2464 |
|
|
if (ENB_reg = '1') then
|
2465 |
|
|
if (BWRITE_MODE = "RD_BEFORE_WR") then
|
2466 |
|
|
for j in 0 to DATA_WIDTH_B - 1 loop
|
2467 |
|
|
DOB(j) <= v_MEM(v_ADB*DATA_WIDTH_B+j);
|
2468 |
|
|
end loop;
|
2469 |
|
|
else
|
2470 |
|
|
DOB <= DOB_node;
|
2471 |
|
|
end if;
|
2472 |
|
|
else
|
2473 |
|
|
DOB <= DOB_node;
|
2474 |
|
|
end if;
|
2475 |
|
|
end if;
|
2476 |
|
|
end process;
|
2477 |
|
|
|
2478 |
|
|
-- BRAM instance for SPRAM
|
2479 |
|
|
DPRAM_INST: SC_BRAM_16K_L
|
2480 |
|
|
|
2481 |
|
|
generic map(
|
2482 |
|
|
AWRITE_MODE => AWRITE_MODE,
|
2483 |
|
|
BWRITE_MODE => BWRITE_MODE,
|
2484 |
|
|
WADDR_WIDTH_A => ADDR_WIDTH_A,
|
2485 |
|
|
RADDR_WIDTH_A => ADDR_WIDTH_A,
|
2486 |
|
|
WADDR_WIDTH_B => ADDR_WIDTH_B,
|
2487 |
|
|
RADDR_WIDTH_B => ADDR_WIDTH_B,
|
2488 |
|
|
WDATA_WIDTH_A => DATA_WIDTH_A,
|
2489 |
|
|
RDATA_WIDTH_A => DATA_WIDTH_A,
|
2490 |
|
|
WDATA_WIDTH_B => DATA_WIDTH_B,
|
2491 |
|
|
RDATA_WIDTH_B => DATA_WIDTH_B,
|
2492 |
|
|
ARRAY_SIZE => ARRAY_SIZE,
|
2493 |
|
|
MEM_INIT_FLAG => MEM_INIT_FLAG,
|
2494 |
|
|
MEM_INIT_FILE => MEM_INIT_FILE
|
2495 |
|
|
|
2496 |
|
|
)
|
2497 |
|
|
port map (
|
2498 |
|
|
WADA => ADA_reg,
|
2499 |
|
|
WEA => ENA_reg,
|
2500 |
|
|
WDA => DIA_reg,
|
2501 |
|
|
RADA => ADA_reg,
|
2502 |
|
|
REA => RENA_reg,
|
2503 |
|
|
RDA => DOA_node,
|
2504 |
|
|
|
2505 |
|
|
WADB => ADB_reg,
|
2506 |
|
|
WEB => ENB_reg,
|
2507 |
|
|
WDB => DIB_reg,
|
2508 |
|
|
RADB => ADB_reg,
|
2509 |
|
|
REB => RENB_reg,
|
2510 |
|
|
RDB => DOB_node
|
2511 |
|
|
);
|
2512 |
|
|
|
2513 |
|
|
end LATTICE_BEHAV;
|
2514 |
|
|
|
2515 |
|
|
|
2516 |
|
|
|
2517 |
|
|
|
2518 |
|
|
-- ************************************************************************
|
2519 |
|
|
--
|
2520 |
|
|
-- PseudoDPRAM: Behavioral Model
|
2521 |
|
|
-- ************************************************************************
|
2522 |
|
|
--
|
2523 |
|
|
-- Filename: SC_PDP_RAM.vhd
|
2524 |
|
|
-- Description: Pseudo Dual Port BRAM behavioral model.
|
2525 |
|
|
-- History:
|
2526 |
|
|
-- May. 30, 2002 Read memory initialization file feature
|
2527 |
|
|
-- ************************************************************************
|
2528 |
|
|
|
2529 |
|
|
LIBRARY ieee;
|
2530 |
|
|
USE ieee.std_logic_1164.ALL;
|
2531 |
|
|
USE ieee.std_logic_unsigned.ALL;
|
2532 |
|
|
|
2533 |
|
|
-- ************************************************************************
|
2534 |
|
|
-- Entity definition
|
2535 |
|
|
-- Draft "generic" members
|
2536 |
|
|
-- ************************************************************************
|
2537 |
|
|
|
2538 |
|
|
entity SC_PDPRAM_16K_L is
|
2539 |
|
|
|
2540 |
|
|
generic (
|
2541 |
|
|
WADDR_WIDTH : integer := 13;
|
2542 |
|
|
WDATA_WIDTH : integer := 2;
|
2543 |
|
|
RADDR_WIDTH : integer := 13;
|
2544 |
|
|
RDATA_WIDTH : integer := 2;
|
2545 |
|
|
MEM_INIT_FLAG : integer := 1;
|
2546 |
|
|
ARRAY_SIZE : integer := 16384;
|
2547 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
2548 |
|
|
|
2549 |
|
|
);
|
2550 |
|
|
|
2551 |
|
|
port (
|
2552 |
|
|
WCEN : in STD_LOGIC ;
|
2553 |
|
|
WCLK : in STD_LOGIC ;
|
2554 |
|
|
WE : in STD_LOGIC ;
|
2555 |
|
|
WCS : in STD_LOGIC_VECTOR (1 downto 0);
|
2556 |
|
|
RCLK : in STD_LOGIC;
|
2557 |
|
|
RCEN : in STD_LOGIC;
|
2558 |
|
|
RST : in STD_LOGIC ;
|
2559 |
|
|
|
2560 |
|
|
WD : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
2561 |
|
|
WAD : in STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0);
|
2562 |
|
|
RAD : in STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0);
|
2563 |
|
|
RD : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
2564 |
|
|
);
|
2565 |
|
|
|
2566 |
|
|
end SC_PDPRAM_16K_L ;
|
2567 |
|
|
|
2568 |
|
|
-- ************************************************************************
|
2569 |
|
|
-- architecture
|
2570 |
|
|
-- ************************************************************************
|
2571 |
|
|
|
2572 |
|
|
architecture LATTICE_BEHAV of SC_PDPRAM_16K_L is
|
2573 |
|
|
|
2574 |
|
|
component SC_BRAM_16K_L
|
2575 |
|
|
|
2576 |
|
|
generic (
|
2577 |
|
|
WADDR_WIDTH_A : integer := 14;
|
2578 |
|
|
RADDR_WIDTH_A : integer := 12;
|
2579 |
|
|
WADDR_WIDTH_B : integer := 14;
|
2580 |
|
|
RADDR_WIDTH_B : integer := 12;
|
2581 |
|
|
WDATA_WIDTH_A : integer := 1;
|
2582 |
|
|
RDATA_WIDTH_A : integer := 4;
|
2583 |
|
|
WDATA_WIDTH_B : integer := 1;
|
2584 |
|
|
RDATA_WIDTH_B : integer := 4;
|
2585 |
|
|
ARRAY_SIZE : integer := 16384;
|
2586 |
|
|
MEM_INIT_FLAG : integer := 0;
|
2587 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
2588 |
|
|
|
2589 |
|
|
);
|
2590 |
|
|
|
2591 |
|
|
port (
|
2592 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
2593 |
|
|
WEA : in STD_LOGIC ;
|
2594 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
2595 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
2596 |
|
|
REA : in STD_LOGIC ;
|
2597 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
2598 |
|
|
|
2599 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
2600 |
|
|
WEB : in STD_LOGIC;
|
2601 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
2602 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
2603 |
|
|
REB : in STD_LOGIC;
|
2604 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
|
2605 |
|
|
);
|
2606 |
|
|
end component;
|
2607 |
|
|
|
2608 |
|
|
-- Signal Declaration
|
2609 |
|
|
|
2610 |
|
|
signal WCEN_node : STD_LOGIC := 'X';
|
2611 |
|
|
signal WCLK_node : STD_LOGIC := 'X';
|
2612 |
|
|
signal WE_node : STD_LOGIC := 'X';
|
2613 |
|
|
signal WCS_node : STD_LOGIC_VECTOR (1 downto 0) := (others => 'X');
|
2614 |
|
|
signal RCEN_node : STD_LOGIC := 'X';
|
2615 |
|
|
signal RCLK_node : STD_LOGIC := 'X';
|
2616 |
|
|
signal RST_node : STD_LOGIC := 'X';
|
2617 |
|
|
signal WD_node : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => 'X');
|
2618 |
|
|
signal WAD_node : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => 'X');
|
2619 |
|
|
signal RD_node : STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0) := (others => 'X');
|
2620 |
|
|
signal RAD_node : STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0) := (others => 'X');
|
2621 |
|
|
|
2622 |
|
|
|
2623 |
|
|
signal WD_reg : STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0) := (others => 'X');
|
2624 |
|
|
signal WAD_reg : STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0) := (others => 'X');
|
2625 |
|
|
signal RAD_reg : STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0) := (others => 'X');
|
2626 |
|
|
signal EN_reg : STD_LOGIC := 'X';
|
2627 |
|
|
signal REN_reg : STD_LOGIC := 'X';
|
2628 |
|
|
signal GND_sig : STD_LOGIC;
|
2629 |
|
|
signal VCC_sig : STD_LOGIC;
|
2630 |
|
|
|
2631 |
|
|
-- architecture
|
2632 |
|
|
|
2633 |
|
|
begin
|
2634 |
|
|
GND_sig <= '0';
|
2635 |
|
|
VCC_sig <= '1';
|
2636 |
|
|
WCEN_node <= WCEN;
|
2637 |
|
|
WCLK_node <= WCLK;
|
2638 |
|
|
WE_node <= WE;
|
2639 |
|
|
WCS_node <= WCS;
|
2640 |
|
|
RCEN_node <= RCEN;
|
2641 |
|
|
RCLK_node <= RCLK;
|
2642 |
|
|
RST_node <= RST;
|
2643 |
|
|
WD_node <= WD;
|
2644 |
|
|
WAD_node <= WAD;
|
2645 |
|
|
RAD_node <= RAD;
|
2646 |
|
|
-- RD <= RD_node;
|
2647 |
|
|
|
2648 |
|
|
RD_output : process (RD_node, RST_node)
|
2649 |
|
|
begin
|
2650 |
|
|
if (RST_node = '1') then
|
2651 |
|
|
RD <= (others => '0');
|
2652 |
|
|
else
|
2653 |
|
|
RD <= RD_node;
|
2654 |
|
|
end if;
|
2655 |
|
|
end process;
|
2656 |
|
|
|
2657 |
|
|
-- Register WD/WAD/ Enable inputs
|
2658 |
|
|
register_write_inputs: process (WCLK_node, RST_node)
|
2659 |
|
|
begin
|
2660 |
|
|
if (RST_node = '1') then
|
2661 |
|
|
WD_reg <= (others =>'0');
|
2662 |
|
|
WAD_reg <= (others =>'0');
|
2663 |
|
|
EN_reg <= '0';
|
2664 |
|
|
REN_reg <= '1';
|
2665 |
|
|
elsif (WCLK_node'event and WCLK_node = '1') then
|
2666 |
|
|
if (WCEN_node = '1') then
|
2667 |
|
|
WD_reg <= WD_node;
|
2668 |
|
|
WAD_reg <= WAD_node;
|
2669 |
|
|
EN_reg <= WE_node and WCS_node(0) and WCS_node(1);
|
2670 |
|
|
REN_reg <= '1';
|
2671 |
|
|
end if;
|
2672 |
|
|
end if;
|
2673 |
|
|
end process register_write_inputs;
|
2674 |
|
|
|
2675 |
|
|
-- Register RAD inputs
|
2676 |
|
|
register_read_inputs: process (RCLK_node, RST_node)
|
2677 |
|
|
begin
|
2678 |
|
|
if (RST_node = '1') then
|
2679 |
|
|
RAD_reg <= (others =>'0');
|
2680 |
|
|
elsif (RCLK_node'event and RCLK_node = '1') then
|
2681 |
|
|
if (RCEN_node = '1') then
|
2682 |
|
|
RAD_reg <= RAD_node;
|
2683 |
|
|
end if;
|
2684 |
|
|
end if;
|
2685 |
|
|
end process register_read_inputs;
|
2686 |
|
|
|
2687 |
|
|
-- BRAM instance for SPRAM
|
2688 |
|
|
PDPRAM_INST: SC_BRAM_16K_L
|
2689 |
|
|
|
2690 |
|
|
generic map(
|
2691 |
|
|
WADDR_WIDTH_A => WADDR_WIDTH,
|
2692 |
|
|
RADDR_WIDTH_A => RADDR_WIDTH,
|
2693 |
|
|
WADDR_WIDTH_B => WADDR_WIDTH,
|
2694 |
|
|
RADDR_WIDTH_B => RADDR_WIDTH,
|
2695 |
|
|
WDATA_WIDTH_A => WDATA_WIDTH,
|
2696 |
|
|
RDATA_WIDTH_A => RDATA_WIDTH,
|
2697 |
|
|
WDATA_WIDTH_B => WDATA_WIDTH,
|
2698 |
|
|
RDATA_WIDTH_B => RDATA_WIDTH,
|
2699 |
|
|
ARRAY_SIZE => ARRAY_SIZE,
|
2700 |
|
|
MEM_INIT_FLAG => MEM_INIT_FLAG,
|
2701 |
|
|
MEM_INIT_FILE => MEM_INIT_FILE
|
2702 |
|
|
)
|
2703 |
|
|
port map (
|
2704 |
|
|
WADA => WAD_reg,
|
2705 |
|
|
WEA => EN_reg,
|
2706 |
|
|
WDA => WD_reg,
|
2707 |
|
|
RADA => RAD_reg,
|
2708 |
|
|
REA => REN_reg,
|
2709 |
|
|
RDA => RD_node,
|
2710 |
|
|
|
2711 |
|
|
WADB => WAD_reg,
|
2712 |
|
|
WEB => GND_sig,
|
2713 |
|
|
WDB => WD_reg,
|
2714 |
|
|
RADB => RAD_reg,
|
2715 |
|
|
REB => GND_sig,
|
2716 |
|
|
RDB => open
|
2717 |
|
|
);
|
2718 |
|
|
|
2719 |
|
|
end LATTICE_BEHAV;
|
2720 |
|
|
|
2721 |
|
|
|
2722 |
|
|
|
2723 |
|
|
-- ************************************************************************
|
2724 |
|
|
--
|
2725 |
|
|
-- SPRAM: Behavioral Model
|
2726 |
|
|
-- ************************************************************************
|
2727 |
|
|
--
|
2728 |
|
|
-- Filename: SC_SP_RAM.vhd
|
2729 |
|
|
-- Description: Single Port BRAM behavioral model.
|
2730 |
|
|
-- History:
|
2731 |
|
|
-- May. 30, 2002 Read memory initialization file feature
|
2732 |
|
|
-- ************************************************************************
|
2733 |
|
|
|
2734 |
|
|
LIBRARY ieee, std;
|
2735 |
|
|
USE ieee.std_logic_1164.ALL;
|
2736 |
|
|
USE ieee.std_logic_unsigned.ALL;
|
2737 |
|
|
USE std.textio.all;
|
2738 |
|
|
USE work.components.all;
|
2739 |
|
|
|
2740 |
|
|
-- ************************************************************************
|
2741 |
|
|
-- Entity definition
|
2742 |
|
|
-- Draft "generic" members
|
2743 |
|
|
-- ************************************************************************
|
2744 |
|
|
|
2745 |
|
|
entity SC_SPRAM_16K_L is
|
2746 |
|
|
|
2747 |
|
|
generic (
|
2748 |
|
|
WRITE_MODE : string := "NORMAL";
|
2749 |
|
|
ADDR_WIDTH : integer := 13;
|
2750 |
|
|
DATA_WIDTH : integer := 2;
|
2751 |
|
|
MEM_INIT_FLAG : integer := 1;
|
2752 |
|
|
ARRAY_SIZE : integer := 16384;
|
2753 |
|
|
MEM_INIT_FILE : string := "qq.dat"
|
2754 |
|
|
|
2755 |
|
|
);
|
2756 |
|
|
|
2757 |
|
|
port (
|
2758 |
|
|
CEN : in STD_LOGIC ;
|
2759 |
|
|
CLK : in STD_LOGIC ;
|
2760 |
|
|
WR : in STD_LOGIC ;
|
2761 |
|
|
CS : in STD_LOGIC_VECTOR (1 downto 0);
|
2762 |
|
|
RST : in STD_LOGIC ;
|
2763 |
|
|
DI : in STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0);
|
2764 |
|
|
AD : in STD_LOGIC_VECTOR (ADDR_WIDTH-1 downto 0);
|
2765 |
|
|
DO : out STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0)
|
2766 |
|
|
);
|
2767 |
|
|
|
2768 |
|
|
end SC_SPRAM_16K_L ;
|
2769 |
|
|
|
2770 |
|
|
-- ************************************************************************
|
2771 |
|
|
-- architecture
|
2772 |
|
|
-- ************************************************************************
|
2773 |
|
|
|
2774 |
|
|
architecture LATTICE_BEHAV of SC_SPRAM_16K_L is
|
2775 |
|
|
|
2776 |
|
|
component SC_BRAM_16K_L
|
2777 |
|
|
|
2778 |
|
|
generic (
|
2779 |
|
|
AWRITE_MODE : string := "NORMAL";
|
2780 |
|
|
BWRITE_MODE : string := "NORMAL";
|
2781 |
|
|
WADDR_WIDTH_A : integer := 14;
|
2782 |
|
|
RADDR_WIDTH_A : integer := 12;
|
2783 |
|
|
WADDR_WIDTH_B : integer := 14;
|
2784 |
|
|
RADDR_WIDTH_B : integer := 12;
|
2785 |
|
|
WDATA_WIDTH_A : integer := 1;
|
2786 |
|
|
RDATA_WIDTH_A : integer := 4;
|
2787 |
|
|
WDATA_WIDTH_B : integer := 1;
|
2788 |
|
|
RDATA_WIDTH_B : integer := 4;
|
2789 |
|
|
ARRAY_SIZE : integer := 16384;
|
2790 |
|
|
MEM_INIT_FLAG : integer := 1;
|
2791 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
2792 |
|
|
|
2793 |
|
|
);
|
2794 |
|
|
|
2795 |
|
|
port (
|
2796 |
|
|
WADA : in STD_LOGIC_VECTOR (WADDR_WIDTH_A -1 downto 0);
|
2797 |
|
|
WEA : in STD_LOGIC ;
|
2798 |
|
|
WDA : in STD_LOGIC_VECTOR (WDATA_WIDTH_A -1 downto 0);
|
2799 |
|
|
RADA : in STD_LOGIC_VECTOR (RADDR_WIDTH_A -1 downto 0);
|
2800 |
|
|
REA : in STD_LOGIC ;
|
2801 |
|
|
RDA : out STD_LOGIC_VECTOR (RDATA_WIDTH_A -1 downto 0);
|
2802 |
|
|
|
2803 |
|
|
WADB : in STD_LOGIC_VECTOR (WADDR_WIDTH_B -1 downto 0);
|
2804 |
|
|
WEB : in STD_LOGIC;
|
2805 |
|
|
WDB : in STD_LOGIC_VECTOR (WDATA_WIDTH_B -1 downto 0);
|
2806 |
|
|
RADB : in STD_LOGIC_VECTOR (RADDR_WIDTH_B -1 downto 0);
|
2807 |
|
|
REB : in STD_LOGIC;
|
2808 |
|
|
RDB : out STD_LOGIC_VECTOR (RDATA_WIDTH_B -1 downto 0)
|
2809 |
|
|
);
|
2810 |
|
|
end component;
|
2811 |
|
|
|
2812 |
|
|
procedure READ_MEM_INIT_FILE(
|
2813 |
|
|
f_name : IN STRING;
|
2814 |
|
|
v_MEM : OUT STD_LOGIC_VECTOR
|
2815 |
|
|
) IS
|
2816 |
|
|
|
2817 |
|
|
file f_INIT_FILE : TEXT is MEM_INIT_FILE;
|
2818 |
|
|
variable v_WORD : line;
|
2819 |
|
|
variable v_GOODFLAG : boolean;
|
2820 |
|
|
variable v_WORD_BIT : string (DATA_WIDTH downto 1) ;
|
2821 |
|
|
variable v_CHAR : character;
|
2822 |
|
|
variable v_OFFSET : integer := 0;
|
2823 |
|
|
variable v_LINE : integer := 0;
|
2824 |
|
|
|
2825 |
|
|
begin
|
2826 |
|
|
|
2827 |
|
|
while ( not(endfile(f_INIT_FILE)) and (v_LINE < 2**ADDR_WIDTH)) loop
|
2828 |
|
|
|
2829 |
|
|
readline(f_INIT_FILE, v_WORD);
|
2830 |
|
|
read(v_WORD, v_WORD_BIT, v_GOODFLAG);
|
2831 |
|
|
|
2832 |
|
|
for k in 0 to DATA_WIDTH - 1 loop
|
2833 |
|
|
v_CHAR := v_WORD_BIT (k + 1);
|
2834 |
|
|
if (v_CHAR = '1') then
|
2835 |
|
|
v_MEM(v_OFFSET + k) := '1';
|
2836 |
|
|
|
2837 |
|
|
elsif (v_CHAR = '0') then
|
2838 |
|
|
v_MEM(v_OFFSET + k) := '0';
|
2839 |
|
|
|
2840 |
|
|
-- else
|
2841 |
|
|
-- v_MEM(v_OFFSET + k) := 'X';
|
2842 |
|
|
|
2843 |
|
|
end if;
|
2844 |
|
|
end loop;
|
2845 |
|
|
|
2846 |
|
|
v_LINE := v_LINE + 1;
|
2847 |
|
|
v_OFFSET := v_OFFSET + DATA_WIDTH;
|
2848 |
|
|
|
2849 |
|
|
end loop;
|
2850 |
|
|
|
2851 |
|
|
end READ_MEM_INIT_FILE;
|
2852 |
|
|
|
2853 |
|
|
-- Signal Declaration
|
2854 |
|
|
|
2855 |
|
|
signal CEN_node : STD_LOGIC := 'X';
|
2856 |
|
|
signal CLK_node : STD_LOGIC := 'X';
|
2857 |
|
|
signal WR_node : STD_LOGIC := 'X';
|
2858 |
|
|
signal CS_node : STD_LOGIC_VECTOR (1 downto 0) := (others => 'X');
|
2859 |
|
|
signal RST_node : STD_LOGIC := 'X';
|
2860 |
|
|
signal DI_node : STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0) := (others => 'X');
|
2861 |
|
|
signal AD_node : STD_LOGIC_VECTOR (ADDR_WIDTH-1 downto 0) := (others => '0');
|
2862 |
|
|
signal DO_node : STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0) := (others => 'X');
|
2863 |
|
|
|
2864 |
|
|
signal DI_reg : STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0) := (others => 'X');
|
2865 |
|
|
signal AD_reg : STD_LOGIC_VECTOR (ADDR_WIDTH-1 downto 0) := (others => 'X');
|
2866 |
|
|
signal EN_reg : STD_LOGIC := 'X';
|
2867 |
|
|
signal REN_reg : STD_LOGIC := 'X';
|
2868 |
|
|
|
2869 |
|
|
signal GND_sig : STD_LOGIC;
|
2870 |
|
|
signal VCC_sig : STD_LOGIC;
|
2871 |
|
|
|
2872 |
|
|
signal v_MEM : STD_LOGIC_VECTOR((2**ADDR_WIDTH) * DATA_WIDTH-1 downto 0) := (others => '0');
|
2873 |
|
|
signal v_AD : integer;
|
2874 |
|
|
|
2875 |
|
|
-- architecture
|
2876 |
|
|
|
2877 |
|
|
begin
|
2878 |
|
|
GND_sig <= '0';
|
2879 |
|
|
VCC_sig <= '1';
|
2880 |
|
|
|
2881 |
|
|
CEN_node <= CEN;
|
2882 |
|
|
CLK_node <= CLK;
|
2883 |
|
|
WR_node <= WR;
|
2884 |
|
|
CS_node <= CS;
|
2885 |
|
|
RST_node <= RST;
|
2886 |
|
|
DI_node <= DI;
|
2887 |
|
|
AD_node <= AD;
|
2888 |
|
|
-- DO <= DO_node;
|
2889 |
|
|
|
2890 |
|
|
init_process : process
|
2891 |
|
|
variable v_INI_DONE : boolean := FALSE;
|
2892 |
|
|
variable v_MEM_i : std_logic_vector(ARRAY_SIZE - 1 downto 0) := ( others => '0' );
|
2893 |
|
|
begin
|
2894 |
|
|
if( MEM_INIT_FLAG = 1 and v_INI_DONE = FALSE) THEN
|
2895 |
|
|
READ_MEM_INIT_FILE(MEM_INIT_FILE, v_MEM_i);
|
2896 |
|
|
v_INI_DONE := TRUE;
|
2897 |
|
|
end if;
|
2898 |
|
|
v_MEM <= v_MEM_i;
|
2899 |
|
|
wait;
|
2900 |
|
|
end process;
|
2901 |
|
|
|
2902 |
|
|
process(AD_node)
|
2903 |
|
|
begin
|
2904 |
|
|
if (Valid_Address(AD_node) = TRUE) then
|
2905 |
|
|
v_AD <= CONV_INTEGER(AD_node);
|
2906 |
|
|
end if;
|
2907 |
|
|
end process;
|
2908 |
|
|
|
2909 |
|
|
-- Register DI/ AD / Enable inputs
|
2910 |
|
|
register_inputs: process (CLK_node, RST_node)
|
2911 |
|
|
begin
|
2912 |
|
|
if (RST_node = '1') then
|
2913 |
|
|
DI_reg <= (others =>'0');
|
2914 |
|
|
AD_reg <= (others =>'0');
|
2915 |
|
|
EN_reg <= '0';
|
2916 |
|
|
REN_reg <= '1';
|
2917 |
|
|
elsif (CLK_node'event and CLK_node = '1') then
|
2918 |
|
|
if (CEN_node = '1') then
|
2919 |
|
|
DI_reg <= DI_node;
|
2920 |
|
|
AD_reg <= AD_node;
|
2921 |
|
|
EN_reg <= WR_node and CS_node(0) and CS_node(1);
|
2922 |
|
|
REN_reg <= '1';
|
2923 |
|
|
end if;
|
2924 |
|
|
end if;
|
2925 |
|
|
end process register_inputs;
|
2926 |
|
|
|
2927 |
|
|
v_MEM_process: process (EN_reg, DI_node, v_AD, CLK_node)
|
2928 |
|
|
begin
|
2929 |
|
|
if (CLK_node'event and CLK_node = '1') then
|
2930 |
|
|
if (EN_reg = '1' and CEN_node = '1') then
|
2931 |
|
|
for i in 0 to DATA_WIDTH - 1 loop
|
2932 |
|
|
v_MEM(v_AD*DATA_WIDTH+i) <= DI_node(i) after 1 ps;
|
2933 |
|
|
end loop;
|
2934 |
|
|
end if;
|
2935 |
|
|
end if;
|
2936 |
|
|
end process;
|
2937 |
|
|
|
2938 |
|
|
DO_output_process: process (RST_node, EN_reg, DO_node, CLK_node)
|
2939 |
|
|
begin
|
2940 |
|
|
if (RST_node = '1') then
|
2941 |
|
|
DO <= (others => '0');
|
2942 |
|
|
elsif (CLK_node = '1' and CEN_node = '1') then
|
2943 |
|
|
if (EN_reg = '1') then
|
2944 |
|
|
if (WRITE_MODE = "RD_BEFORE_WR") then
|
2945 |
|
|
for j in 0 to DATA_WIDTH - 1 loop
|
2946 |
|
|
DO(j) <= v_MEM(v_AD*DATA_WIDTH+j);
|
2947 |
|
|
end loop;
|
2948 |
|
|
else
|
2949 |
|
|
DO <= DO_node;
|
2950 |
|
|
end if;
|
2951 |
|
|
else
|
2952 |
|
|
DO <= DO_node;
|
2953 |
|
|
end if;
|
2954 |
|
|
end if;
|
2955 |
|
|
end process;
|
2956 |
|
|
|
2957 |
|
|
-- BRAM instance for SPRAM
|
2958 |
|
|
SPRAM_INST: SC_BRAM_16K_L
|
2959 |
|
|
|
2960 |
|
|
generic map(
|
2961 |
|
|
AWRITE_MODE => WRITE_MODE,
|
2962 |
|
|
WADDR_WIDTH_A => ADDR_WIDTH,
|
2963 |
|
|
RADDR_WIDTH_A => ADDR_WIDTH,
|
2964 |
|
|
WADDR_WIDTH_B => ADDR_WIDTH,
|
2965 |
|
|
RADDR_WIDTH_B => ADDR_WIDTH,
|
2966 |
|
|
WDATA_WIDTH_A => DATA_WIDTH,
|
2967 |
|
|
RDATA_WIDTH_A => DATA_WIDTH,
|
2968 |
|
|
WDATA_WIDTH_B => DATA_WIDTH,
|
2969 |
|
|
RDATA_WIDTH_B => DATA_WIDTH,
|
2970 |
|
|
ARRAY_SIZE => open,
|
2971 |
|
|
MEM_INIT_FLAG => MEM_INIT_FLAG,
|
2972 |
|
|
MEM_INIT_FILE => MEM_INIT_FILE
|
2973 |
|
|
)
|
2974 |
|
|
port map (
|
2975 |
|
|
WADA => AD_reg,
|
2976 |
|
|
WEA => EN_reg,
|
2977 |
|
|
WDA => DI_reg,
|
2978 |
|
|
RADA => AD_reg,
|
2979 |
|
|
REA => REN_reg,
|
2980 |
|
|
RDA => DO_node,
|
2981 |
|
|
|
2982 |
|
|
WADB => AD_reg,
|
2983 |
|
|
WEB => GND_sig,
|
2984 |
|
|
WDB => DI_reg,
|
2985 |
|
|
RADB => AD_reg,
|
2986 |
|
|
REB => GND_sig,
|
2987 |
|
|
RDB => open
|
2988 |
|
|
);
|
2989 |
|
|
|
2990 |
|
|
end LATTICE_BEHAV;
|
2991 |
|
|
|
2992 |
|
|
|
2993 |
|
|
|
2994 |
|
|
library IEEE;
|
2995 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
2996 |
|
|
library IEEE;
|
2997 |
|
|
use IEEE.VITAL_Timing.all;
|
2998 |
|
|
|
2999 |
|
|
entity fifo_dc is
|
3000 |
|
|
generic (
|
3001 |
|
|
module_type : string := "FIFO_DC";
|
3002 |
|
|
module_width : integer := 1;
|
3003 |
|
|
module_widthu : integer := 1;
|
3004 |
|
|
module_numwords : integer := 2;
|
3005 |
|
|
module_amfull_flag : integer := 1;
|
3006 |
|
|
module_amempty_flag : integer := 1;
|
3007 |
|
|
module_hint : string := "UNUSED");
|
3008 |
|
|
|
3009 |
|
|
port (
|
3010 |
|
|
Data : in std_logic_vector (module_width-1 downto 0);
|
3011 |
|
|
WrClock : in std_logic;
|
3012 |
|
|
WrEn : in std_logic;
|
3013 |
|
|
RdClock : in std_logic;
|
3014 |
|
|
RdEn : in std_logic;
|
3015 |
|
|
Reset : in std_logic;
|
3016 |
|
|
RPReset : in std_logic;
|
3017 |
|
|
Q : out std_logic_vector (module_width-1 downto 0);
|
3018 |
|
|
Full : out std_logic;
|
3019 |
|
|
Empty : out std_logic;
|
3020 |
|
|
AlmostFull : out std_logic;
|
3021 |
|
|
AlmostEmpty : out std_logic);
|
3022 |
|
|
|
3023 |
|
|
end fifo_dc;
|
3024 |
|
|
|
3025 |
|
|
architecture fun_simulation of fifo_dc is
|
3026 |
|
|
|
3027 |
|
|
component SC_FIFO_16K_L
|
3028 |
|
|
|
3029 |
|
|
generic (
|
3030 |
|
|
WADDR_WIDTH : integer := 9;
|
3031 |
|
|
WDATA_WIDTH : integer := 32;
|
3032 |
|
|
RADDR_WIDTH : integer := 9;
|
3033 |
|
|
RDATA_WIDTH : integer := 32;
|
3034 |
|
|
ALMOST_FULL_X : integer := 1;
|
3035 |
|
|
ALMOST_EMPTY_Y : integer := 1;
|
3036 |
|
|
MEM_INIT_FLAG : integer := 0;
|
3037 |
|
|
TERMINAL_COUNT : integer := 511;
|
3038 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
3039 |
|
|
|
3040 |
|
|
);
|
3041 |
|
|
|
3042 |
|
|
port (
|
3043 |
|
|
WE : in STD_LOGIC ;
|
3044 |
|
|
WCLK : in STD_LOGIC ;
|
3045 |
|
|
RST : in STD_LOGIC ;
|
3046 |
|
|
RPRST : in STD_LOGIC ;
|
3047 |
|
|
RE : in STD_LOGIC ;
|
3048 |
|
|
RCLK : in STD_LOGIC ;
|
3049 |
|
|
FULLIN : in STD_LOGIC ;
|
3050 |
|
|
EMPTYIN : in STD_LOGIC ;
|
3051 |
|
|
DI : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
3052 |
|
|
|
3053 |
|
|
FULL : out STD_LOGIC ;
|
3054 |
|
|
EMPTY : out STD_LOGIC ;
|
3055 |
|
|
AMFULL : out STD_LOGIC ;
|
3056 |
|
|
AMEMPTY : out STD_LOGIC ;
|
3057 |
|
|
DO : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
3058 |
|
|
|
3059 |
|
|
);
|
3060 |
|
|
|
3061 |
|
|
end component;
|
3062 |
|
|
|
3063 |
|
|
signal Rst, FullIn, EmptyIn : std_logic;
|
3064 |
|
|
|
3065 |
|
|
|
3066 |
|
|
begin
|
3067 |
|
|
|
3068 |
|
|
Rst <= '1';
|
3069 |
|
|
FullIn <= '0';
|
3070 |
|
|
EmptyIn <= '1';
|
3071 |
|
|
|
3072 |
|
|
|
3073 |
|
|
SC_FIFO_inst : SC_FIFO_16K_L
|
3074 |
|
|
|
3075 |
|
|
generic map (
|
3076 |
|
|
WADDR_WIDTH => module_widthu,
|
3077 |
|
|
WDATA_WIDTH => module_width,
|
3078 |
|
|
RADDR_WIDTH => module_widthu,
|
3079 |
|
|
RDATA_WIDTH => module_width,
|
3080 |
|
|
ALMOST_FULL_X => module_amfull_flag,
|
3081 |
|
|
ALMOST_EMPTY_Y => module_amempty_flag,
|
3082 |
|
|
MEM_INIT_FLAG => 0,
|
3083 |
|
|
TERMINAL_COUNT => module_numwords - 1,
|
3084 |
|
|
MEM_INIT_FILE => open )
|
3085 |
|
|
|
3086 |
|
|
port map (
|
3087 |
|
|
WE => WrEn,
|
3088 |
|
|
WCLK => WrClock,
|
3089 |
|
|
RST => Reset,
|
3090 |
|
|
RPRST => RPReset,
|
3091 |
|
|
RE => RdEn,
|
3092 |
|
|
RCLK => RdClock,
|
3093 |
|
|
FULLIN => FullIn,
|
3094 |
|
|
EMPTYIN => EmptyIn,
|
3095 |
|
|
DI => Data,
|
3096 |
|
|
|
3097 |
|
|
FULL => Full,
|
3098 |
|
|
EMPTY => Empty,
|
3099 |
|
|
AMFULL => AlmostFull,
|
3100 |
|
|
AMEMPTY => AlmostEmpty,
|
3101 |
|
|
DO => Q
|
3102 |
|
|
);
|
3103 |
|
|
|
3104 |
|
|
end;library IEEE;
|
3105 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
3106 |
|
|
library IEEE;
|
3107 |
|
|
use IEEE.VITAL_Timing.all;
|
3108 |
|
|
|
3109 |
|
|
entity fifo_dcx is
|
3110 |
|
|
generic (
|
3111 |
|
|
module_type : string := "FIFO_DCX";
|
3112 |
|
|
module_widthw : integer := 1;
|
3113 |
|
|
module_widthr : integer := 1;
|
3114 |
|
|
module_widthuw : integer := 1;
|
3115 |
|
|
module_widthur : integer := 1;
|
3116 |
|
|
module_numwordsw : integer := 2;
|
3117 |
|
|
module_numwordsr : integer := 2;
|
3118 |
|
|
module_amfull_flag : integer := 1;
|
3119 |
|
|
module_amempty_flag : integer := 1;
|
3120 |
|
|
module_hint : string := "UNUSED");
|
3121 |
|
|
|
3122 |
|
|
port (
|
3123 |
|
|
Data : in std_logic_vector (module_widthw-1 downto 0);
|
3124 |
|
|
WrClock : in std_logic;
|
3125 |
|
|
WrEn : in std_logic;
|
3126 |
|
|
RdClock : in std_logic;
|
3127 |
|
|
RdEn : in std_logic;
|
3128 |
|
|
Reset : in std_logic;
|
3129 |
|
|
RPReset : in std_logic;
|
3130 |
|
|
Q : out std_logic_vector (module_widthr-1 downto 0);
|
3131 |
|
|
Full : out std_logic;
|
3132 |
|
|
Empty : out std_logic;
|
3133 |
|
|
AlmostFull : out std_logic;
|
3134 |
|
|
AlmostEmpty : out std_logic);
|
3135 |
|
|
|
3136 |
|
|
end fifo_dcx;
|
3137 |
|
|
|
3138 |
|
|
architecture fun_simulation of fifo_dcx is
|
3139 |
|
|
|
3140 |
|
|
component SC_FIFO_V2_16K_L
|
3141 |
|
|
|
3142 |
|
|
generic (
|
3143 |
|
|
WADDR_WIDTH : integer := 9;
|
3144 |
|
|
WDATA_WIDTH : integer := 32;
|
3145 |
|
|
RADDR_WIDTH : integer := 9;
|
3146 |
|
|
RDATA_WIDTH : integer := 32;
|
3147 |
|
|
ALMOST_FULL_X : integer := 1;
|
3148 |
|
|
ALMOST_EMPTY_Y : integer := 1;
|
3149 |
|
|
MEM_INIT_FLAG : integer := 0;
|
3150 |
|
|
TERMINAL_COUNT : integer := 511;
|
3151 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
3152 |
|
|
|
3153 |
|
|
);
|
3154 |
|
|
|
3155 |
|
|
port (
|
3156 |
|
|
WE : in STD_LOGIC ;
|
3157 |
|
|
WCLK : in STD_LOGIC ;
|
3158 |
|
|
RST : in STD_LOGIC ;
|
3159 |
|
|
RPRST : in STD_LOGIC ;
|
3160 |
|
|
RE : in STD_LOGIC ;
|
3161 |
|
|
RCLK : in STD_LOGIC ;
|
3162 |
|
|
FULLIN : in STD_LOGIC ;
|
3163 |
|
|
EMPTYIN : in STD_LOGIC ;
|
3164 |
|
|
DI : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
3165 |
|
|
|
3166 |
|
|
FULL : out STD_LOGIC ;
|
3167 |
|
|
EMPTY : out STD_LOGIC ;
|
3168 |
|
|
AMFULL : out STD_LOGIC ;
|
3169 |
|
|
AMEMPTY : out STD_LOGIC ;
|
3170 |
|
|
DO : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
3171 |
|
|
|
3172 |
|
|
);
|
3173 |
|
|
|
3174 |
|
|
end component;
|
3175 |
|
|
|
3176 |
|
|
signal FullIn, EmptyIn : std_logic;
|
3177 |
|
|
|
3178 |
|
|
|
3179 |
|
|
begin
|
3180 |
|
|
|
3181 |
|
|
FullIn <= '0';
|
3182 |
|
|
EmptyIn <= '1';
|
3183 |
|
|
|
3184 |
|
|
|
3185 |
|
|
SC_FIFO_inst : SC_FIFO_V2_16K_L
|
3186 |
|
|
|
3187 |
|
|
generic map (
|
3188 |
|
|
WADDR_WIDTH => module_widthuw,
|
3189 |
|
|
WDATA_WIDTH => module_widthw,
|
3190 |
|
|
RADDR_WIDTH => module_widthur,
|
3191 |
|
|
RDATA_WIDTH => module_widthr,
|
3192 |
|
|
ALMOST_FULL_X => module_amfull_flag,
|
3193 |
|
|
ALMOST_EMPTY_Y => module_amempty_flag,
|
3194 |
|
|
MEM_INIT_FLAG => 0,
|
3195 |
|
|
TERMINAL_COUNT => module_numwordsw - 1,
|
3196 |
|
|
MEM_INIT_FILE => open )
|
3197 |
|
|
|
3198 |
|
|
port map (
|
3199 |
|
|
WE => WrEn,
|
3200 |
|
|
WCLK => WrClock,
|
3201 |
|
|
RST => Reset,
|
3202 |
|
|
RPRST => RPReset,
|
3203 |
|
|
RE => RdEn,
|
3204 |
|
|
RCLK => RdClock,
|
3205 |
|
|
FULLIN => FullIn,
|
3206 |
|
|
EMPTYIN => EmptyIn,
|
3207 |
|
|
DI => Data,
|
3208 |
|
|
|
3209 |
|
|
FULL => Full,
|
3210 |
|
|
EMPTY => Empty,
|
3211 |
|
|
AMFULL => AlmostFull,
|
3212 |
|
|
AMEMPTY => AlmostEmpty,
|
3213 |
|
|
DO => Q
|
3214 |
|
|
);
|
3215 |
|
|
|
3216 |
|
|
end;
|
3217 |
|
|
library IEEE;
|
3218 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
3219 |
|
|
library IEEE;
|
3220 |
|
|
use IEEE.VITAL_Timing.all;
|
3221 |
|
|
|
3222 |
|
|
use work.components.all;
|
3223 |
|
|
|
3224 |
|
|
entity ram_dp is
|
3225 |
|
|
generic(
|
3226 |
|
|
module_type : string := "RAM_DP";
|
3227 |
|
|
module_widthw : integer := 1;
|
3228 |
|
|
module_widthr : integer := 1;
|
3229 |
|
|
module_numwordsw : integer := 1;
|
3230 |
|
|
module_widthadw : integer := 1;
|
3231 |
|
|
module_widthadr : integer := 1;
|
3232 |
|
|
module_numwordsr : integer := 1;
|
3233 |
|
|
module_indata : string := "REGISTERED";
|
3234 |
|
|
module_outdata : string := "UNREGISTERED";
|
3235 |
|
|
module_addressw_control : string := "REGISTERED";
|
3236 |
|
|
module_addressr_control : string := "REGISTERED";
|
3237 |
|
|
module_gsr : string := "DISABLED";
|
3238 |
|
|
module_hint : string := "UNUSED";
|
3239 |
|
|
module_init_file : string := "");
|
3240 |
|
|
|
3241 |
|
|
|
3242 |
|
|
port(
|
3243 |
|
|
Data : in std_logic_vector (module_widthw-1 downto 0);
|
3244 |
|
|
WrAddress : in std_logic_vector (module_widthadw-1 downto 0);
|
3245 |
|
|
RdAddress : in std_logic_vector (module_widthadr-1 downto 0);
|
3246 |
|
|
WrClock : in std_logic;
|
3247 |
|
|
WrClockEn : in std_logic;
|
3248 |
|
|
RdClock : in std_logic;
|
3249 |
|
|
RdClockEn : in std_logic;
|
3250 |
|
|
WE : in std_logic;
|
3251 |
|
|
Reset : in std_logic;
|
3252 |
|
|
Q : out std_logic_vector (module_widthr-1 downto 0));
|
3253 |
|
|
|
3254 |
|
|
end ram_dp;
|
3255 |
|
|
|
3256 |
|
|
architecture fun_simulation of ram_dp is
|
3257 |
|
|
|
3258 |
|
|
component SC_PDPRAM_16K_L
|
3259 |
|
|
|
3260 |
|
|
generic (
|
3261 |
|
|
WADDR_WIDTH : integer := 13;
|
3262 |
|
|
WDATA_WIDTH : integer := 2;
|
3263 |
|
|
RADDR_WIDTH : integer := 13;
|
3264 |
|
|
RDATA_WIDTH : integer := 2;
|
3265 |
|
|
ARRAY_SIZE : integer := 511;
|
3266 |
|
|
MEM_INIT_FLAG : integer := 0;
|
3267 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
3268 |
|
|
|
3269 |
|
|
);
|
3270 |
|
|
|
3271 |
|
|
port (
|
3272 |
|
|
WCEN : in STD_LOGIC ;
|
3273 |
|
|
WCLK : in STD_LOGIC ;
|
3274 |
|
|
WE : in STD_LOGIC ;
|
3275 |
|
|
WCS : in STD_LOGIC_VECTOR (1 downto 0);
|
3276 |
|
|
RCLK : in STD_LOGIC;
|
3277 |
|
|
RCEN : in STD_LOGIC;
|
3278 |
|
|
RST : in STD_LOGIC ;
|
3279 |
|
|
|
3280 |
|
|
WD : in STD_LOGIC_VECTOR (WDATA_WIDTH -1 downto 0);
|
3281 |
|
|
WAD : in STD_LOGIC_VECTOR (WADDR_WIDTH -1 downto 0);
|
3282 |
|
|
RAD : in STD_LOGIC_VECTOR (RADDR_WIDTH -1 downto 0);
|
3283 |
|
|
RD : out STD_LOGIC_VECTOR (RDATA_WIDTH -1 downto 0)
|
3284 |
|
|
);
|
3285 |
|
|
|
3286 |
|
|
end component;
|
3287 |
|
|
|
3288 |
|
|
signal cs : std_logic_vector ( 1 downto 0);
|
3289 |
|
|
signal Q_K : std_logic_vector (module_widthr-1 downto 0);
|
3290 |
|
|
signal Q_K_reg : std_logic_vector (module_widthr-1 downto 0);
|
3291 |
|
|
CONSTANT module_init_flag : integer := init_flag(module_init_file);
|
3292 |
|
|
|
3293 |
|
|
begin
|
3294 |
|
|
|
3295 |
|
|
cs <= "11";
|
3296 |
|
|
|
3297 |
|
|
OutRegister : process(RdClock, Reset)
|
3298 |
|
|
begin
|
3299 |
|
|
if (Reset = '1') then
|
3300 |
|
|
Q_K_reg <= (others => '0');
|
3301 |
|
|
elsif (RdClock'EVENT and RdClock = '1') then
|
3302 |
|
|
if (RdClockEn = '1') then
|
3303 |
|
|
Q_K_reg <= Q_K;
|
3304 |
|
|
elsif (RdClockEn /= '0') then
|
3305 |
|
|
Q_K_reg <= (others => 'X');
|
3306 |
|
|
end if;
|
3307 |
|
|
end if;
|
3308 |
|
|
end process;
|
3309 |
|
|
|
3310 |
|
|
SelectOut : process (Q_K , Q_K_reg)
|
3311 |
|
|
begin
|
3312 |
|
|
if(module_outdata = "UNREGISTERED" and module_addressr_control = "REGISTERED") then
|
3313 |
|
|
Q <= Q_K;
|
3314 |
|
|
elsif(module_outdata = "REGISTERED" and module_addressr_control = "REGISTERED") then
|
3315 |
|
|
Q <= Q_K_reg;
|
3316 |
|
|
elsif(module_indata = "UNREGISTERED") then
|
3317 |
|
|
assert false report "Error: module_indata should be REGISTERED" severity ERROR;
|
3318 |
|
|
elsif(module_addressw_control = "UNREGISTERED") then
|
3319 |
|
|
assert false report "Error: module_addressw_control should be REGISTERED" severity ERROR;
|
3320 |
|
|
elsif(module_addressr_control = "UNREGISTERED") then
|
3321 |
|
|
assert false report "Error: module_addressr_control should be REGISTERED" severity ERROR;
|
3322 |
|
|
end if;
|
3323 |
|
|
end process;
|
3324 |
|
|
|
3325 |
|
|
|
3326 |
|
|
PDPRAM_inst : SC_PDPRAM_16K_L
|
3327 |
|
|
|
3328 |
|
|
generic map(
|
3329 |
|
|
WADDR_WIDTH => module_widthadw,
|
3330 |
|
|
WDATA_WIDTH => module_widthw,
|
3331 |
|
|
RADDR_WIDTH => module_widthadr,
|
3332 |
|
|
RDATA_WIDTH => module_widthr,
|
3333 |
|
|
MEM_INIT_FLAG => module_init_flag,
|
3334 |
|
|
ARRAY_SIZE => module_numwordsw*module_widthw,
|
3335 |
|
|
MEM_INIT_FILE => module_init_file)
|
3336 |
|
|
|
3337 |
|
|
port map(
|
3338 |
|
|
WCEN => WrClockEn,
|
3339 |
|
|
WCLK => WrClock,
|
3340 |
|
|
WE => WE,
|
3341 |
|
|
WCS => cs,
|
3342 |
|
|
RCLK => RdClock,
|
3343 |
|
|
RCEN => RdClockEn,
|
3344 |
|
|
RST => Reset,
|
3345 |
|
|
|
3346 |
|
|
WD => Data,
|
3347 |
|
|
WAD => WrAddress,
|
3348 |
|
|
RAD => RdAddress,
|
3349 |
|
|
RD => Q_K
|
3350 |
|
|
);
|
3351 |
|
|
end;library IEEE;
|
3352 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
3353 |
|
|
library IEEE;
|
3354 |
|
|
use IEEE.VITAL_Timing.all;
|
3355 |
|
|
|
3356 |
|
|
use work.components.all;
|
3357 |
|
|
|
3358 |
|
|
entity ram_dp_true is
|
3359 |
|
|
generic (
|
3360 |
|
|
module_type : string := "RAM_DP_TRUE";
|
3361 |
|
|
module_widtha : positive;
|
3362 |
|
|
module_widthada : positive;
|
3363 |
|
|
module_numwordsa : positive;
|
3364 |
|
|
module_widthb : positive;
|
3365 |
|
|
module_widthadb : positive;
|
3366 |
|
|
module_numwordsb : positive;
|
3367 |
|
|
module_indata : string :="REGISTERED";
|
3368 |
|
|
module_outdata : string :="UNREGISTERED";
|
3369 |
|
|
module_addressa_control : string :="REGISTERED";
|
3370 |
|
|
module_addressb_control : string :="REGISTERED";
|
3371 |
|
|
module_init_file : string := "";
|
3372 |
|
|
module_hint : string :="UNUSED";
|
3373 |
|
|
module_gsr : string := "DISABLED";
|
3374 |
|
|
module_writemode_a : string := "NORMAL";
|
3375 |
|
|
module_writemode_b : string := "NORMAL");
|
3376 |
|
|
port (
|
3377 |
|
|
DataInA : in std_logic_vector(module_widtha-1 downto 0);
|
3378 |
|
|
AddressA : in std_logic_vector(module_widthada-1 downto 0);
|
3379 |
|
|
DataInB : in std_logic_vector(module_widthb-1 downto 0);
|
3380 |
|
|
AddressB : in std_logic_vector(module_widthadb-1 downto 0);
|
3381 |
|
|
ClockA : in std_logic := '0';
|
3382 |
|
|
ClockEnA : in std_logic := '0';
|
3383 |
|
|
ClockB : in std_logic := '0';
|
3384 |
|
|
ClockEnB : in std_logic := '0';
|
3385 |
|
|
WrA : in std_logic;
|
3386 |
|
|
WrB : in std_logic;
|
3387 |
|
|
ResetA : in std_logic;
|
3388 |
|
|
ResetB : in std_logic;
|
3389 |
|
|
QA : out std_logic_vector(module_widtha-1 downto 0);
|
3390 |
|
|
QB : out std_logic_vector(module_widthb-1 downto 0));
|
3391 |
|
|
end ram_dp_true;
|
3392 |
|
|
|
3393 |
|
|
architecture fun_simulation of ram_dp_true is
|
3394 |
|
|
|
3395 |
|
|
component SC_DPRAM_16K_L
|
3396 |
|
|
generic (
|
3397 |
|
|
AWRITE_MODE : string := "NORMAL";
|
3398 |
|
|
BWRITE_MODE : string := "NORMAL";
|
3399 |
|
|
ADDR_WIDTH_A : integer := 13;
|
3400 |
|
|
DATA_WIDTH_A : integer := 2;
|
3401 |
|
|
ADDR_WIDTH_B : integer := 14;
|
3402 |
|
|
DATA_WIDTH_B : integer := 1;
|
3403 |
|
|
MEM_INIT_FLAG : integer := 0;
|
3404 |
|
|
ARRAY_SIZE : integer := 511;
|
3405 |
|
|
MEM_INIT_FILE : string := "mem_init_file"
|
3406 |
|
|
);
|
3407 |
|
|
port (
|
3408 |
|
|
CENA : in STD_LOGIC ;
|
3409 |
|
|
CLKA : in STD_LOGIC ;
|
3410 |
|
|
WRA : in STD_LOGIC ;
|
3411 |
|
|
CSA : in STD_LOGIC_VECTOR (1 downto 0);
|
3412 |
|
|
RSTA : in STD_LOGIC ;
|
3413 |
|
|
DIA : in STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0);
|
3414 |
|
|
ADA : in STD_LOGIC_VECTOR (ADDR_WIDTH_A -1 downto 0);
|
3415 |
|
|
DOA : out STD_LOGIC_VECTOR (DATA_WIDTH_A -1 downto 0);
|
3416 |
|
|
|
3417 |
|
|
CENB : in STD_LOGIC ;
|
3418 |
|
|
CLKB : in STD_LOGIC ;
|
3419 |
|
|
WRB : in STD_LOGIC ;
|
3420 |
|
|
CSB : in STD_LOGIC_VECTOR (1 downto 0);
|
3421 |
|
|
RSTB : in STD_LOGIC ;
|
3422 |
|
|
DIB : in STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0);
|
3423 |
|
|
ADB : in STD_LOGIC_VECTOR (ADDR_WIDTH_B -1 downto 0);
|
3424 |
|
|
DOB : out STD_LOGIC_VECTOR (DATA_WIDTH_B -1 downto 0)
|
3425 |
|
|
);
|
3426 |
|
|
|
3427 |
|
|
end component;
|
3428 |
|
|
|
3429 |
|
|
signal CS : std_logic_vector ( 1 downto 0);
|
3430 |
|
|
signal QA_int, QA_int_reg : std_logic_vector(module_widtha-1 downto 0);
|
3431 |
|
|
signal QB_int, QB_int_reg : std_logic_vector(module_widthb-1 downto 0);
|
3432 |
|
|
CONSTANT module_init_flag : integer := init_flag(module_init_file);
|
3433 |
|
|
|
3434 |
|
|
begin
|
3435 |
|
|
|
3436 |
|
|
CS <= "11";
|
3437 |
|
|
|
3438 |
|
|
OutRegisterA : process(ClockA, ResetA)
|
3439 |
|
|
begin
|
3440 |
|
|
if(ResetA = '1') then QA_int_reg <= (others => '0');
|
3441 |
|
|
elsif (ClockA'EVENT and ClockA = '1') then
|
3442 |
|
|
if (ClockEnA = '1') then
|
3443 |
|
|
QA_int_reg <= QA_int;
|
3444 |
|
|
elsif (ClockEnA /= '0') then
|
3445 |
|
|
QA_int_reg <= (others => 'X');
|
3446 |
|
|
end if;
|
3447 |
|
|
end if;
|
3448 |
|
|
end process;
|
3449 |
|
|
|
3450 |
|
|
OutRegisterB : process(ClockB, ResetB)
|
3451 |
|
|
begin
|
3452 |
|
|
if(ResetB = '1') then QB_int_reg <= (others => '0');
|
3453 |
|
|
elsif (ClockB'EVENT and ClockB = '1') then
|
3454 |
|
|
if (ClockEnB = '1') then
|
3455 |
|
|
QB_int_reg <= QB_int;
|
3456 |
|
|
elsif (ClockEnB /= '0') then
|
3457 |
|
|
QB_int_reg <= (others => 'X');
|
3458 |
|
|
end if;
|
3459 |
|
|
end if;
|
3460 |
|
|
end process;
|
3461 |
|
|
|
3462 |
|
|
SelectA : process (QA_int , QA_int_reg)
|
3463 |
|
|
begin
|
3464 |
|
|
if(module_outdata = "UNREGISTERED" and module_addressa_control = "REGISTERED") then
|
3465 |
|
|
QA <= QA_int;
|
3466 |
|
|
elsif(module_outdata = "REGISTERED" and module_addressa_control = "REGISTERED") then
|
3467 |
|
|
QA <= QA_int_reg;
|
3468 |
|
|
elsif(module_indata = "UNREGISTERED") then
|
3469 |
|
|
assert false report "Error: module_indata should be REGISTERED" severity ERROR;
|
3470 |
|
|
elsif(module_addressa_control = "UNREGISTERED") then
|
3471 |
|
|
assert false report "Error: module_addressa_control should be REGISTERED" severity ERROR;
|
3472 |
|
|
end if;
|
3473 |
|
|
end process;
|
3474 |
|
|
|
3475 |
|
|
SelectB : process (QB_int , QB_int_reg)
|
3476 |
|
|
begin
|
3477 |
|
|
if(module_outdata = "UNREGISTERED" and module_addressb_control = "REGISTERED") then
|
3478 |
|
|
QB <= QB_int;
|
3479 |
|
|
elsif(module_outdata = "REGISTERED" and module_addressb_control = "REGISTERED") then
|
3480 |
|
|
QB <= QB_int_reg;
|
3481 |
|
|
elsif(module_addressa_control = "UNREGISTERED") then
|
3482 |
|
|
assert false report "Error: module_addressa_control should be REGISTERED" severity ERROR;
|
3483 |
|
|
end if;
|
3484 |
|
|
end process;
|
3485 |
|
|
|
3486 |
|
|
RAM_DP_INST : SC_DPRAM_16K_L
|
3487 |
|
|
|
3488 |
|
|
generic map(
|
3489 |
|
|
ADDR_WIDTH_A => module_widthada,
|
3490 |
|
|
DATA_WIDTH_A => module_widtha,
|
3491 |
|
|
ADDR_WIDTH_B => module_widthadb,
|
3492 |
|
|
DATA_WIDTH_B => module_widthb,
|
3493 |
|
|
MEM_INIT_FLAG => module_init_flag,
|
3494 |
|
|
ARRAY_SIZE => module_numwordsa*module_widtha,
|
3495 |
|
|
MEM_INIT_FILE => module_init_file,
|
3496 |
|
|
AWRITE_MODE => module_writemode_a,
|
3497 |
|
|
BWRITE_MODE => module_writemode_b
|
3498 |
|
|
)
|
3499 |
|
|
port map (
|
3500 |
|
|
CENA => ClockEnA,
|
3501 |
|
|
CLKA => ClockA,
|
3502 |
|
|
WRA => WrA,
|
3503 |
|
|
CSA => CS,
|
3504 |
|
|
RSTA => ResetA,
|
3505 |
|
|
DIA => DataInA,
|
3506 |
|
|
ADA => AddressA,
|
3507 |
|
|
DOA => QA_int,
|
3508 |
|
|
|
3509 |
|
|
CENB => ClockEnB,
|
3510 |
|
|
CLKB => ClockB,
|
3511 |
|
|
WRB => WrB,
|
3512 |
|
|
CSB => CS,
|
3513 |
|
|
RSTB => ResetB,
|
3514 |
|
|
DIB => DataInB,
|
3515 |
|
|
ADB => AddressB,
|
3516 |
|
|
DOB => QB_int
|
3517 |
|
|
);
|
3518 |
|
|
end;
|
3519 |
|
|
library IEEE;
|
3520 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
3521 |
|
|
library IEEE;
|
3522 |
|
|
use IEEE.VITAL_Timing.all;
|
3523 |
|
|
|
3524 |
|
|
use work.components.all;
|
3525 |
|
|
|
3526 |
|
|
entity ram_dq is
|
3527 |
|
|
generic(
|
3528 |
|
|
module_type : string := "RAM_DQ";
|
3529 |
|
|
module_width : integer := 1;
|
3530 |
|
|
module_numwords : integer := 1;
|
3531 |
|
|
module_widthad : integer := 1;
|
3532 |
|
|
module_indata : string := "REGISTERED";
|
3533 |
|
|
module_outdata : string := "UNREGISTERED";
|
3534 |
|
|
module_address_control : string := "REGISTERED";
|
3535 |
|
|
module_init_file : string := "";
|
3536 |
|
|
module_hint : string := "UNUSED";
|
3537 |
|
|
module_gsr : string := "DISABLED";
|
3538 |
|
|
module_writemode : string := "NORMAL");
|
3539 |
|
|
|
3540 |
|
|
port(
|
3541 |
|
|
|
3542 |
|
|
Data : in std_logic_vector (module_width-1 downto 0);
|
3543 |
|
|
Address : in std_logic_vector (module_widthad-1 downto 0);
|
3544 |
|
|
Clock : in std_logic;
|
3545 |
|
|
ClockEn : in std_logic;
|
3546 |
|
|
WE : in std_logic;
|
3547 |
|
|
Reset : in std_logic;
|
3548 |
|
|
Q : out std_logic_vector (module_width-1 downto 0));
|
3549 |
|
|
end ram_dq;
|
3550 |
|
|
|
3551 |
|
|
|
3552 |
|
|
architecture fun_simulation of ram_dq is
|
3553 |
|
|
|
3554 |
|
|
|
3555 |
|
|
component SC_SPRAM_16K_L
|
3556 |
|
|
|
3557 |
|
|
generic (
|
3558 |
|
|
WRITE_MODE : string := "NORMAL";
|
3559 |
|
|
ADDR_WIDTH : integer := 13;
|
3560 |
|
|
DATA_WIDTH : integer := 2;
|
3561 |
|
|
MEM_INIT_FLAG : integer := 1;
|
3562 |
|
|
ARRAY_SIZE : integer := 511;
|
3563 |
|
|
MEM_INIT_FILE : string := "qq.dat"
|
3564 |
|
|
|
3565 |
|
|
);
|
3566 |
|
|
|
3567 |
|
|
port (
|
3568 |
|
|
CEN : in STD_LOGIC ;
|
3569 |
|
|
CLK : in STD_LOGIC ;
|
3570 |
|
|
WR : in STD_LOGIC ;
|
3571 |
|
|
CS : in STD_LOGIC_VECTOR (1 downto 0);
|
3572 |
|
|
RST : in STD_LOGIC ;
|
3573 |
|
|
DI : in STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0);
|
3574 |
|
|
AD : in STD_LOGIC_VECTOR (ADDR_WIDTH-1 downto 0);
|
3575 |
|
|
DO : out STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0)
|
3576 |
|
|
);
|
3577 |
|
|
|
3578 |
|
|
end component;
|
3579 |
|
|
|
3580 |
|
|
signal cs : std_logic_vector (1 downto 0);
|
3581 |
|
|
signal Q_K : std_logic_vector (module_width-1 downto 0);
|
3582 |
|
|
signal Q_K_reg : std_logic_vector (module_width-1 downto 0);
|
3583 |
|
|
CONSTANT module_init_flag : integer := init_flag(module_init_file);
|
3584 |
|
|
|
3585 |
|
|
begin
|
3586 |
|
|
|
3587 |
|
|
cs <= "11";
|
3588 |
|
|
|
3589 |
|
|
OutRegister : process(Clock, Reset)
|
3590 |
|
|
begin
|
3591 |
|
|
if (Reset = '1') then
|
3592 |
|
|
Q_K_reg <= (others => '0');
|
3593 |
|
|
elsif (Clock'EVENT and Clock = '1') then
|
3594 |
|
|
if (ClockEn = '1') then
|
3595 |
|
|
Q_K_reg <= Q_K;
|
3596 |
|
|
elsif (ClockEn /= '0') then
|
3597 |
|
|
Q_K_reg <= (others => 'X');
|
3598 |
|
|
end if;
|
3599 |
|
|
end if;
|
3600 |
|
|
end process;
|
3601 |
|
|
|
3602 |
|
|
SelectOut : process (Q_K , Q_K_reg)
|
3603 |
|
|
begin
|
3604 |
|
|
if(module_outdata = "UNREGISTERED" and module_address_control = "REGISTERED") then
|
3605 |
|
|
Q <= Q_K;
|
3606 |
|
|
elsif(module_outdata = "REGISTERED" and module_address_control = "REGISTERED") then
|
3607 |
|
|
Q <= Q_K_reg;
|
3608 |
|
|
elsif(module_indata = "UNREGISTERED") then
|
3609 |
|
|
assert false report "Error: module_indata should be REGISTERED" severity ERROR;
|
3610 |
|
|
elsif(module_address_control = "UNREGISTERED") then
|
3611 |
|
|
assert false report "Error: module_address_control should be REGISTERED" severity ERROR;
|
3612 |
|
|
end if;
|
3613 |
|
|
end process;
|
3614 |
|
|
|
3615 |
|
|
SPRAM_inst : SC_SPRAM_16K_L
|
3616 |
|
|
|
3617 |
|
|
generic map (
|
3618 |
|
|
ADDR_WIDTH => module_widthad,
|
3619 |
|
|
DATA_WIDTH => module_width,
|
3620 |
|
|
MEM_INIT_FLAG => module_init_flag,
|
3621 |
|
|
ARRAY_SIZE => module_numwords * module_width,
|
3622 |
|
|
MEM_INIT_FILE => module_init_file,
|
3623 |
|
|
WRITE_MODE => module_writemode)
|
3624 |
|
|
|
3625 |
|
|
port map (
|
3626 |
|
|
CEN => ClockEn,
|
3627 |
|
|
CLK => Clock,
|
3628 |
|
|
WR => WE,
|
3629 |
|
|
CS => cs,
|
3630 |
|
|
RST => Reset,
|
3631 |
|
|
DI => Data,
|
3632 |
|
|
AD => Address,
|
3633 |
|
|
DO => Q_K
|
3634 |
|
|
);
|
3635 |
|
|
end;
|
3636 |
|
|
library IEEE;
|
3637 |
|
|
use IEEE.STD_LOGIC_1164.all;
|
3638 |
|
|
library IEEE;
|
3639 |
|
|
use IEEE.VITAL_Timing.all;
|
3640 |
|
|
|
3641 |
|
|
entity rom is
|
3642 |
|
|
generic (
|
3643 |
|
|
module_type : string := "ROM";
|
3644 |
|
|
module_width : integer := 1;
|
3645 |
|
|
module_numwords : integer := 1;
|
3646 |
|
|
module_widthad : integer := 1;
|
3647 |
|
|
module_outdata : string := "REGISTERED";
|
3648 |
|
|
module_address_control : string := "REGISTERED";
|
3649 |
|
|
module_init_file : string := "init_file";
|
3650 |
|
|
module_gsr : string := "DISABLED";
|
3651 |
|
|
module_hint : string := "UNUSED");
|
3652 |
|
|
port (
|
3653 |
|
|
Address : in std_logic_vector (module_widthad-1 downto 0);
|
3654 |
|
|
OutClock : in std_logic;
|
3655 |
|
|
OutClockEn : in std_logic;
|
3656 |
|
|
Reset : in std_logic;
|
3657 |
|
|
Q : out std_logic_vector (module_width-1 downto 0));
|
3658 |
|
|
end rom;
|
3659 |
|
|
|
3660 |
|
|
architecture fun_simulation of rom is
|
3661 |
|
|
|
3662 |
|
|
component SC_SPRAM_16K_L
|
3663 |
|
|
|
3664 |
|
|
generic (
|
3665 |
|
|
ADDR_WIDTH : integer := 13;
|
3666 |
|
|
DATA_WIDTH : integer := 2;
|
3667 |
|
|
ARRAY_SIZE : integer := 511;
|
3668 |
|
|
MEM_INIT_FLAG : integer := 1;
|
3669 |
|
|
MEM_INIT_FILE : string := "qq.dat"
|
3670 |
|
|
|
3671 |
|
|
);
|
3672 |
|
|
|
3673 |
|
|
port (
|
3674 |
|
|
CEN : in STD_LOGIC ;
|
3675 |
|
|
CLK : in STD_LOGIC ;
|
3676 |
|
|
WR : in STD_LOGIC ;
|
3677 |
|
|
CS : in STD_LOGIC_VECTOR (1 downto 0);
|
3678 |
|
|
RST : in STD_LOGIC ;
|
3679 |
|
|
DI : in STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0);
|
3680 |
|
|
AD : in STD_LOGIC_VECTOR (ADDR_WIDTH-1 downto 0);
|
3681 |
|
|
DO : out STD_LOGIC_VECTOR (DATA_WIDTH-1 downto 0)
|
3682 |
|
|
);
|
3683 |
|
|
|
3684 |
|
|
end component;
|
3685 |
|
|
|
3686 |
|
|
signal cs : std_logic_vector ( 1 downto 0);
|
3687 |
|
|
signal DI_sig : std_logic_vector (module_width-1 downto 0);
|
3688 |
|
|
signal WE_sig : std_logic;
|
3689 |
|
|
|
3690 |
|
|
signal Q_K : std_logic_vector (module_width-1 downto 0);
|
3691 |
|
|
signal Q_K_reg : std_logic_vector (module_width-1 downto 0);
|
3692 |
|
|
|
3693 |
|
|
begin
|
3694 |
|
|
|
3695 |
|
|
cs <= "11";
|
3696 |
|
|
WE_sig <= '0';
|
3697 |
|
|
|
3698 |
|
|
OutRegister : process(OutClock, Reset)
|
3699 |
|
|
begin
|
3700 |
|
|
if (Reset = '1') then
|
3701 |
|
|
Q_K_reg <= (others => '0');
|
3702 |
|
|
elsif (OutClock'EVENT and OutClock = '1') then
|
3703 |
|
|
if(OutClockEn = '1') then
|
3704 |
|
|
Q_K_reg <= Q_K;
|
3705 |
|
|
elsif(OutClockEn /= '0') then
|
3706 |
|
|
Q_K_reg <= (others => 'X' );
|
3707 |
|
|
end if;
|
3708 |
|
|
end if;
|
3709 |
|
|
end process;
|
3710 |
|
|
|
3711 |
|
|
SelectOut : process (Q_K , Q_K_reg)
|
3712 |
|
|
begin
|
3713 |
|
|
if(module_outdata = "UNREGISTERED" and module_address_control = "REGISTERED") then
|
3714 |
|
|
Q <= Q_K;
|
3715 |
|
|
elsif(module_outdata = "REGISTERED" and module_address_control = "REGISTERED") then
|
3716 |
|
|
Q <= Q_K_reg;
|
3717 |
|
|
elsif(module_address_control = "UNREGISTERED") then
|
3718 |
|
|
assert false report "Error: module_address_control should be REGISTERED" severity ERROR;
|
3719 |
|
|
end if;
|
3720 |
|
|
end process;
|
3721 |
|
|
|
3722 |
|
|
SPRAM_inst : SC_SPRAM_16K_L
|
3723 |
|
|
|
3724 |
|
|
generic map(
|
3725 |
|
|
ADDR_WIDTH => module_widthad,
|
3726 |
|
|
DATA_WIDTH => module_width,
|
3727 |
|
|
MEM_INIT_FLAG => 1,
|
3728 |
|
|
ARRAY_SIZE => module_numwords * module_width,
|
3729 |
|
|
MEM_INIT_FILE => module_init_file)
|
3730 |
|
|
|
3731 |
|
|
port map(
|
3732 |
|
|
CEN => OutClockEn,
|
3733 |
|
|
CLK => OutClock,
|
3734 |
|
|
WR => WE_sig,
|
3735 |
|
|
CS => cs,
|
3736 |
|
|
RST => Reset,
|
3737 |
|
|
DI => DI_sig,
|
3738 |
|
|
AD => Address,
|
3739 |
|
|
DO => Q_K
|
3740 |
|
|
);
|
3741 |
|
|
end;
|