mawais
Junior Member level 2
Hi I am currently working with virtex 2 pro fpga and want to use the dual port ram, the problem I am having is that in simulation it shows right results while when I synthesize my program it does not work accordingly. I have varified this that the problem is only due to the use of dual port ram otherwise the program responds properly. I just want to verify that the code for the dual port line buffer is ok or not which is as under. Its very urgent please help me. Thanks in advance.
best regards,
Muhammad Awais
Hi I want to add that, I have taken the above code from the link
**broken link removed**
page 548-549
also that I am using same clock source for both ports is it OK. OR should i take two clock sources the original to port A and the other its inverted version to the other port B. Please help me.
waiting for reply
best regards,
Muhammad Awais.
best regards,
Muhammad Awais
Code:
entity line_buffer_8b_DP is
Port (clk : in STD_LOGIC
idata1 : in STD_LOGIC_VECTOR (7 downto 0); -- input data port
idata2 : in STD_LOGIC_VECTOR (7 downto 0); -- input data port
P1 : in STD_LOGIC_VECTOR (10 downto 0); -- reference to a memory location
P2 : in STD_LOGIC_VECTOR (10 downto 0); -- reference to a memory location
ena : in STD_LOGIC; -- must be high to enable shifting of data
enb : in STD_LOGIC; -- must be high to enable shifting of data
odata1 : out STD_LOGIC_VECTOR (7 downto 0); -- output data port
odata2 : out STD_LOGIC_VECTOR (7 downto 0); -- output data port
);
end line_buffer_8b_DP;
architecture Behavioral of line_buffer_8b_DP is
begin
RAMB16_S9_S9_inst : RAMB16_S9_S9
generic map (
INIT_A => X"000", -- Value of output RAM registers at startup
INIT_B => X"000", -- Value of output RAM registers at startup
SRVAL_A => X"000", -- Ouput value upon SSR assertion
SRVAL_B => X"000", -- Ouput value upon SSR assertion
WRITE_MODE_A => "READ_FIRST", -- WRITE_FIRST, READ_FIRST or NO_CHANGE
WRITE_MODE_B => "READ_FIRST", -- WRITE_FIRST, READ_FIRST or NO_CHANGE
-- The following INIT_xx declarations specify the initial contents of the RAM
-- Address 0 to 511
INIT_00 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_01 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_02 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_03 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_04 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_05 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_06 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_07 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_08 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_09 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0A => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0B => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0C => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0D => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0E => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_0F => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 512 to 1023
INIT_10 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_11 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_12 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_13 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_14 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_15 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_16 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_17 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_18 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_19 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1A => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1B => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1C => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1D => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1E => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_1F => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 1024 to 1535
INIT_20 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_21 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_22 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_23 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_24 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_25 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_26 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_27 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_28 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_29 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2A => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2B => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2C => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2D => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2E => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_2F => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 1536 to 2047
INIT_30 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_31 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_32 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_33 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_34 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_35 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_36 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_37 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_38 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_39 => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3A => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3B => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3C => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3D => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3E => X"0000000000000000000000000000000000000000000000000000000000000000",
INIT_3F => X"0000000000000000000000000000000000000000000000000000000000000000",
-- The next set of INITP_xx are for the parity bits
-- Address 0 to 511
INITP_00 => X"0000000000000000000000000000000000000000000000000000000000000000",
INITP_01 => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 512 to 1023
INITP_02 => X"0000000000000000000000000000000000000000000000000000000000000000",
INITP_03 => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 1024 to 1535
INITP_04 => X"0000000000000000000000000000000000000000000000000000000000000000",
INITP_05 => X"0000000000000000000000000000000000000000000000000000000000000000",
-- Address 1536 to 2047
INITP_06 => X"0000000000000000000000000000000000000000000000000000000000000000",
INITP_07 => X"0000000000000000000000000000000000000000000000000000000000000000")
port map (
DIA => idata1, -- insert 8 bits data in bus (<7 downto 0>)
DIPA => "0", -- insert 1 bit parity data in bus (or <8 downto 8>)
ADDRA => P1, -- insert 11 bits address bus
ENA => ena, -- insert enable signal
WEA => '1', -- insert write enable signal
SSRA => '0', -- insert set/reset signal
CLKA => clk, -- insert clock signal
DOA => odata1, -- insert 8 bits data out bus (<7 downto 0>)
DOPA => open, -- insert 1 bit parity data out bus (or <8 downto 8>)
--
DIB => idata2, -- insert 8 bits data in bus (<7 downto 0>)
DIPB => "0", -- insert 1 bit parity data in bus (or <8 downto 8>)
ADDRB => P2, -- insert 11 bits address bus
ENB => enb, -- insert enable signal
WEB => '0', -- insert write enable signal
SSRB => '0', -- insert set/reset signal
CLKB => clk , -- insert clock signal
DOB => odata2, -- insert 8 bits data out bus (<7 downto 0>)
DOPB => open -- insert 1 bit parity data out bus (or <8 downto 8>)
);
end Behavioral;Hi I want to add that, I have taken the above code from the link
**broken link removed**
page 548-549
also that I am using same clock source for both ports is it OK. OR should i take two clock sources the original to port A and the other its inverted version to the other port B. Please help me.
waiting for reply
best regards,
Muhammad Awais.
Code:
Code: