Subversion Repositories gpib_controller

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--This file is part of fpga_gpib_controller.

--

-- Fpga_gpib_controller is free software: you can redistribute it and/or modify

-- it under the terms of the GNU General Public License as published by

-- the Free Software Foundation, either version 3 of the License, or

-- (at your option) any later version.

--

-- Fpga_gpib_controller is distributed in the hope that it will be useful,

-- but WITHOUT ANY WARRANTY; without even the implied warranty of

-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-- GNU General Public License for more details.

-- You should have received a copy of the GNU General Public License

-- along with Fpga_gpib_controller.  If not, see <http://www.gnu.org/licenses/>.

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-- Entity: SettingsReg0

-- Date:2011-11-09  

-- Author: Andrzej Paluch

--

-- Description ${cursor}

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library ieee;

use ieee.std_logic_1164.all;

use ieee.std_logic_unsigned.all;

library ieee;

use ieee.std_logic_1164.all;

use ieee.std_logic_unsigned.all;

entity SettingsReg1 is

        port (

                reset : in std_logic;

                strobe : in std_logic;

                data_in : in std_logic_vector (15 downto 0);

                data_out : out std_logic_vector (15 downto 0);

                -- gpib

                myAddr : out std_logic_vector (4 downto 0);

                T1 : out std_logic_vector (7 downto 0)

        );

end SettingsReg1;

architecture arch of SettingsReg1 is

        signal inner_buf : std_logic_vector (15 downto 0);

begin

        inner_buf(15 downto 13) <= "000";

        data_out <= inner_buf;

        myAddr <= inner_buf(4 downto 0);

        T1 <= inner_buf(12 downto 5);

        process (reset, strobe) begin

                if reset = '1' then

                        -- default 132*Tclk = 2uS and addr=1

                        inner_buf(12 downto 0) <= "1000010000001";

                elsif rising_edge(strobe) then

                        inner_buf(12 downto 0) <= data_in(12 downto 0);

                end if;

        end process;

end arch;