-- ------------------------------------------------------------------------
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-- ------------------------------------------------------------------------
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-- Copyright (C) 2005 Arif Endro Nugroho
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-- Copyright (C) 2005 Arif Endro Nugroho
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-- All rights reserved.
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-- All rights reserved.
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--
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--
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-- Redistribution and use in source and binary forms, with or without
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- are met:
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--
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--
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-- 1. Redistributions of source code must retain the above copyright
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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-- documentation and/or other materials provided with the distribution.
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-- 3. The name of Arif Endro Nugroho may not be used to endorse or promote
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-- products derived from this software without specific prior written
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-- permission.
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--
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--
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-- THIS SOFTWARE IS PROVIDED BY ARIF ENDRO NUGROHO "AS IS" AND ANY EXPRESS
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-- THIS SOFTWARE IS PROVIDED BY ARIF ENDRO NUGROHO "AS IS" AND ANY EXPRESS
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-- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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-- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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-- DISCLAIMED. IN NO EVENT SHALL ARIF ENDRO NUGROHO BE LIABLE FOR ANY
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-- DISCLAIMED. IN NO EVENT SHALL ARIF ENDRO NUGROHO BE LIABLE FOR ANY
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-- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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-- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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-- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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-- POSSIBILITY OF SUCH DAMAGE.
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-- POSSIBILITY OF SUCH DAMAGE.
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--
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--
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-- End Of License.
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-- End Of License.
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-- ------------------------------------------------------------------------
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-- ------------------------------------------------------------------------
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library ieee;
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library ieee;
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use ieee.std_logic_1164.all;
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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 ieee.std_logic_unsigned.all;
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entity counter2bit is
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entity counter2bit is
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port (
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port (
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clock : in std_logic;
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clock : in std_logic;
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clear : in std_logic;
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clear : in std_logic;
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count : out std_logic_vector (1 downto 0)
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count : out std_logic_vector (1 downto 0)
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);
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);
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end counter2bit;
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end counter2bit;
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architecture data_flow of counter2bit is
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architecture data_flow of counter2bit is
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signal tmp : std_logic_vector (1 downto 0) := ( B"00" );
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signal tmp : std_logic_vector (1 downto 0) := ( B"00" );
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begin
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begin
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process (clock, clear)
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process (clock, clear)
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begin
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begin
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if (clear = '1') then
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if (clear = '1') then
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tmp <= "00";
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tmp <= "00";
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elsif (clock = '1' and clock'event) then
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elsif (clock = '1' and clock'event) then
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tmp <= tmp + 1;
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tmp <= tmp + 1;
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end if;
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end if;
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end process;
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end process;
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count <= tmp;
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count <= tmp;
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end data_flow;
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end data_flow;
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