Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Xilinx Block Ram initial value problem

Status
Not open for further replies.
X

xenix

Newbie level 4
Joined
Feb 17, 2005
Messages
5
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,316
Hi,

Look up tables consume too much logic source if table is large. I want to store some data on block ram. Data is loaded as initial values to bram. Ram write is disabled, so it will be like a ROM operation.

When i try to read RAM, it always reads zero, is there something wrong with initial value assignment?

INIT_xx are initial value vectors. What are INITP_xx vectors?

Thanks for the replies.

Code: 
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity acitablo1 is
	Port ( 
		modulasyon	: in	STD_LOGIC_VECTOR (8 downto 0); --ram address
		clk			: in	STD_LOGIC; --ram clock
		aci1		: out	STD_LOGIC_VECTOR (13 downto 0) -- data out
		);
end acitablo1;

architecture Behavioral of acitablo1 is


component RAMB16_S18 
-- pragma translate_off
 generic (
	INIT : bit_vector := X"0";
	INIT_00 : bit_vector := X"1818181A181D182018241829182D18321838183E1844184A18501856185D1864"; -- initial values
	INIT_01 : bit_vector := X"1846183F18391833182D18281823181F181B1818181618151814181418151816";
	INIT_02 : bit_vector := X"183318441852185D1865186B186E1870186F186D186A18651860185A1854184D";
	INIT_03 : bit_vector := X"0B060B4B0B900BD4169016C016ED17191743176B179017B217D217EF1809181F";
	INIT_04 : bit_vector := X"122A1263129C12D61310134B138513C013FA1435099009C90A040A420A810AC3";
	INIT_05 : bit_vector := X"0684069206A006AF06BF0FD806E206F5070A071E07331114114A118111B911F1";
	INIT_06 : bit_vector := X"0C4F0C710C94062C062E063106340639063D0643065105EE06590605066D0678";
	INIT_07 : bit_vector := X"05C905DA05EA05F70B510B590B630B710B800B930BA80BBF0BD80BF40C110C2F";
	INIT_08 : bit_vector := X"01840275030D037E03D904250466049E04D004FC0524054805680584059E05B5";
	INIT_09 : bit_vector := X"0756079107D10818086508B9091309100910030C0438003203660258030E00C8";
	INIT_0A : bit_vector := X"04F50514053305520572059205B305D505F8061C06410668069206BE06ED071F";
	INIT_0B : bit_vector := X"0365036E037B038C03A003B703D003EA04050422043F045D047B049904B704D6";
	INIT_0C : bit_vector := X"000000000000000000000644054804BB0457040C03D203A60387037203670363";
	INIT_0D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_0E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_0F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_10 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_11 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_12 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_13 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_14 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_15 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_16 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_17 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_18 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_19 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_20 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_21 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_22 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_23 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_24 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_25 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_26 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_27 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_28 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_29 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_30 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_31 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_32 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_33 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_34 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_35 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_36 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_37 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_38 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_39 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_00 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_01 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_02 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_03 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_04 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_05 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_06 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_07 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	SRVAL : bit_vector := X"0";
	WRITE_MODE : string := "READ_FIRST"
); 
-- pragma translate_on
  port (
	DI     : in std_logic_vector (15 downto 0);
	DIP    : in std_logic_vector (1 downto 0);
	ADDR   : in std_logic_vector (9 downto 0);
	EN     : in std_logic;
	WE     : in std_logic;
	SSR    : in std_logic;
	CLK    : in std_logic;
	DO     : out std_logic_vector (15 downto 0);
	DOP    : out std_logic_vector (1 downto 0)
	); 
end component;

	attribute WRITE_MODE : string;
	attribute WRITE_MODE of U_RAMB16_S18: label is "READ_FIRST";

	signal	addr			:	STD_LOGIC_VECTOR(9 downto 0);	
	signal	di				: STD_LOGIC_VECTOR(15 downto 0);
	signal	dip			: STD_LOGIC_VECTOR(1 downto 0);
	signal	do				: STD_LOGIC_VECTOR(15 downto 0);
	signal	dop			: STD_LOGIC_VECTOR(1 downto 0);


begin

	addr<="0" & (modulasyon-"011011101"); --make it 10 bit, remove the offset and load to addres.

	dip<="00"; -- parity is not used, load with zero
	di<=x"0000"; -- write is disabled, so this is unimportant

	aci1<=do(13 downto 0); --data is loaded to output

U_RAMB16_S18: RAMB16_S18
  port map (
	DI     => di, -- insert 16 bits data in bus (<15 downto 0>)
	DIP    => dip, -- insert 2 bits parity data in bus (or <17 downto 16>)
	ADDR   => addr, -- insert 10 bits address bus	
	EN     => '1', -- insert enable signal --always enable
	WE     => '0', -- insert write enable signal  -- ROM operation, dont write
	SSR    => '0', -- insert set/reset signal
	CLK    => clk, -- insert clock signal
	DO     => do, -- insert 16 bits data out bus (<15 downto 0>)
	DOP    => dop-- insert 2 bits parity data out bus (or <17 downto 16>)
	);	
	
end Behavioral;
 

I found the solution. My initial value assigntment method was for simulation, not for implementation. In order to implement initial values, attribute method should be used.

Working code :

Code: 
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity acitablo1 is
	Port ( 
		modulasyon	: in	STD_LOGIC_VECTOR (8 downto 0); --ram address
		clk			: in	STD_LOGIC; --ram clock
		aci1		: out	STD_LOGIC_VECTOR (13 downto 0) -- data out
		);
end acitablo1;

architecture Behavioral of acitablo1 is

	attribute INIT_00 : string;
	attribute INIT_01 : string;
	attribute INIT_02 : string;
	attribute INIT_03 : string;
	attribute INIT_04 : string;
	attribute INIT_05 : string;
	attribute INIT_06 : string;
	attribute INIT_07 : string;
	attribute INIT_08 : string;
	attribute INIT_09 : string;
	attribute INIT_0A : string;
	attribute INIT_0B : string;
	attribute INIT_0C : string;
	attribute INIT_0D : string;
	attribute INIT_0E : string;
	attribute INIT_0F : string;
	attribute INIT_10 : string;
	attribute INIT_11 : string;
	attribute INIT_12 : string;
	attribute INIT_13 : string;
	attribute INIT_14 : string;
	attribute INIT_15 : string;
	attribute INIT_16 : string;
	attribute INIT_17 : string;
	attribute INIT_18 : string;
	attribute INIT_19 : string;
	attribute INIT_1A : string;
	attribute INIT_1B : string;
	attribute INIT_1C : string;
	attribute INIT_1D : string;
	attribute INIT_1E : string;
	attribute INIT_1F : string;
	attribute INIT_20 : string;
	attribute INIT_21 : string;
	attribute INIT_22 : string;
	attribute INIT_23 : string;
	attribute INIT_24 : string;
	attribute INIT_25 : string;
	attribute INIT_26 : string;
	attribute INIT_27 : string;
	attribute INIT_28 : string;
	attribute INIT_29 : string;
	attribute INIT_2A : string;
	attribute INIT_2B : string;
	attribute INIT_2C : string;
	attribute INIT_2D : string;
	attribute INIT_2E : string;
	attribute INIT_2F : string;
	attribute INIT_30 : string;
	attribute INIT_31 : string;
	attribute INIT_32 : string;
	attribute INIT_33 : string;
	attribute INIT_34 : string;
	attribute INIT_35 : string;
	attribute INIT_36 : string;
	attribute INIT_37 : string;
	attribute INIT_38 : string;
	attribute INIT_39 : string;
	attribute INIT_3A : string;
	attribute INIT_3B : string;
	attribute INIT_3C : string;
	attribute INIT_3D : string;
	attribute INIT_3E : string;
	attribute INIT_3F : string;
	attribute INITP_00 : string;
	attribute INITP_01 : string;
	attribute INITP_02 : string;
	attribute INITP_03 : string;
	attribute INITP_04 : string;
	attribute INITP_05 : string;
	attribute INITP_06 : string;
	attribute INITP_07 : string;
	--
	-- Attributes to define ROM contents during implementation synthesis.
	--
	attribute INIT_00 of U_RAMB16_S18 : label is "1818181A181D182018241829182D18321838183E1844184A18501856185D1864";
	attribute INIT_01 of U_RAMB16_S18 : label is "1846183F18391833182D18281823181F181B1818181618151814181418151816";
	attribute INIT_02 of U_RAMB16_S18 : label is "183318441852185D1865186B186E1870186F186D186A18651860185A1854184D";
	attribute INIT_03 of U_RAMB16_S18 : label is "0B060B4B0B900BD4169016C016ED17191743176B179017B217D217EF1809181F";
	attribute INIT_04 of U_RAMB16_S18 : label is "122A1263129C12D61310134B138513C013FA1435099009C90A040A420A810AC3";
	attribute INIT_05 of U_RAMB16_S18 : label is "0684069206A006AF06BF0FD806E206F5070A071E07331114114A118111B911F1";
	attribute INIT_06 of U_RAMB16_S18 : label is "0C4F0C710C94062C062E063106340639063D0643065105EE06590605066D0678";
	attribute INIT_07 of U_RAMB16_S18 : label is "05C905DA05EA05F70B510B590B630B710B800B930BA80BBF0BD80BF40C110C2F";
	attribute INIT_08 of U_RAMB16_S18 : label is "01840275030D037E03D904250466049E04D004FC0524054805680584059E05B5";
	attribute INIT_09 of U_RAMB16_S18 : label is "0756079107D10818086508B9091309100910030C0438003203660258030E00C8";
	attribute INIT_0A of U_RAMB16_S18 : label is "04F50514053305520572059205B305D505F8061C06410668069206BE06ED071F";
	attribute INIT_0B of U_RAMB16_S18 : label is "0365036E037B038C03A003B703D003EA04050422043F045D047B049904B704D6";
	attribute INIT_0C of U_RAMB16_S18 : label is "000000000000000000000644054804BB0457040C03D203A60387037203670363";
	attribute INIT_0D of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_0E of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_0F of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_10 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_11 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_12 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_13 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_14 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_15 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_16 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_17 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_18 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_19 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1A of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1B of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1C of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1D of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1E of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_1F of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_20 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_21 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_22 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_23 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_24 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_25 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_26 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_27 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_28 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_29 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2A of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2B of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2C of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2D of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2E of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_2F of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_30 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_31 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_32 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_33 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_34 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_35 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_36 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_37 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_38 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_39 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3A of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3B of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3C of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3D of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3E of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INIT_3F of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_00 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_01 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_02 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_03 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_04 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_05 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_06 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";
	attribute INITP_07 of U_RAMB16_S18 : label is "0000000000000000000000000000000000000000000000000000000000000000";


component RAMB16_S18 
-- pragma translate_off
 generic (
	INIT : bit_vector := X"0";
	INIT_00 : bit_vector := X"1818181A181D182018241829182D18321838183E1844184A18501856185D1864"; -- initial values
	INIT_01 : bit_vector := X"1846183F18391833182D18281823181F181B1818181618151814181418151816";
	INIT_02 : bit_vector := X"183318441852185D1865186B186E1870186F186D186A18651860185A1854184D";
	INIT_03 : bit_vector := X"0B060B4B0B900BD4169016C016ED17191743176B179017B217D217EF1809181F";
	INIT_04 : bit_vector := X"122A1263129C12D61310134B138513C013FA1435099009C90A040A420A810AC3";
	INIT_05 : bit_vector := X"0684069206A006AF06BF0FD806E206F5070A071E07331114114A118111B911F1";
	INIT_06 : bit_vector := X"0C4F0C710C94062C062E063106340639063D0643065105EE06590605066D0678";
	INIT_07 : bit_vector := X"05C905DA05EA05F70B510B590B630B710B800B930BA80BBF0BD80BF40C110C2F";
	INIT_08 : bit_vector := X"01840275030D037E03D904250466049E04D004FC0524054805680584059E05B5";
	INIT_09 : bit_vector := X"0756079107D10818086508B9091309100910030C0438003203660258030E00C8";
	INIT_0A : bit_vector := X"04F50514053305520572059205B305D505F8061C06410668069206BE06ED071F";
	INIT_0B : bit_vector := X"0365036E037B038C03A003B703D003EA04050422043F045D047B049904B704D6";
	INIT_0C : bit_vector := X"000000000000000000000644054804BB0457040C03D203A60387037203670363";
	INIT_0D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_0E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_0F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_10 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_11 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_12 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_13 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_14 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_15 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_16 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_17 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_18 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_19 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_1F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_20 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_21 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_22 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_23 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_24 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_25 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_26 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_27 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_28 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_29 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_2F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_30 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_31 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_32 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_33 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_34 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_35 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_36 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_37 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_38 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_39 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3A : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3B : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3C : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3D : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3E : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INIT_3F : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_00 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_01 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_02 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_03 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_04 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_05 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_06 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	INITP_07 : bit_vector := X"0000000000000000000000000000000000000000000000000000000000000000";
	SRVAL : bit_vector := X"0";
	WRITE_MODE : string := "READ_FIRST"
); 
-- pragma translate_on
  port (
	DI     : in std_logic_vector (15 downto 0);
	DIP    : in std_logic_vector (1 downto 0);
	ADDR   : in std_logic_vector (9 downto 0);
	EN     : in std_logic;
	WE     : in std_logic;
	SSR    : in std_logic;
	CLK    : in std_logic;
	DO     : out std_logic_vector (15 downto 0);
	DOP    : out std_logic_vector (1 downto 0)
	); 
end component;

	attribute WRITE_MODE : string;
	attribute WRITE_MODE of U_RAMB16_S18: label is "READ_FIRST";

	signal	addr			:	STD_LOGIC_VECTOR(9 downto 0);	
	signal	di				: STD_LOGIC_VECTOR(15 downto 0);
	signal	dip			: STD_LOGIC_VECTOR(1 downto 0);
	signal	do				: STD_LOGIC_VECTOR(15 downto 0);
	signal	dop			: STD_LOGIC_VECTOR(1 downto 0);


begin

	addr<="0" & (modulasyon-"011011101"); --make it 10 bit, remove the offset and load to addres.

	dip<="00"; -- parity is not used, load with zero
	di<=x"0000"; -- write is disabled, so this is unimportant

	aci1<=do(13 downto 0); --data is loaded to output

U_RAMB16_S18: RAMB16_S18
  port map (
	DI     => di, -- insert 16 bits data in bus (<15 downto 0>)
	DIP    => dip, -- insert 2 bits parity data in bus (or <17 downto 16>)
	ADDR   => addr, -- insert 10 bits address bus	
	EN     => '1', -- insert enable signal --always enable
	WE     => '0', -- insert write enable signal  -- ROM operation, dont write
	SSR    => '0', -- insert set/reset signal
	CLK    => clk, -- insert clock signal
	DO     => do, -- insert 16 bits data out bus (<15 downto 0>)
	DOP    => dop-- insert 2 bits parity data out bus (or <17 downto 16>)
	);	
	
end Behavioral;
 

you are putting
-- pragma translate_off
-- pragma translate_on

which will not use the code between them for synthesis
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top