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author | saurabhb17 | 2019-12-18 15:13:23 +0530 |
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committer | saurabhb17 | 2019-12-18 15:13:23 +0530 |
commit | eb95026ab9007631eb8e2a1c54dcd38fabcb60ad (patch) | |
tree | 8695e410cfe16a3b2e37600cd64b3f0b9a5673e2 /Example/full_adder | |
parent | 04d9c666b4bb19936dfa469f536fb38107e631eb (diff) | |
download | nghdl-eb95026ab9007631eb8e2a1c54dcd38fabcb60ad.tar.gz nghdl-eb95026ab9007631eb8e2a1c54dcd38fabcb60ad.tar.bz2 nghdl-eb95026ab9007631eb8e2a1c54dcd38fabcb60ad.zip |
Examples Restructered
Diffstat (limited to 'Example/full_adder')
-rw-r--r-- | Example/full_adder/full_adder_sl.vhdl | 19 | ||||
-rw-r--r-- | Example/full_adder/full_adder_sl_slv.vhdl | 19 | ||||
-rw-r--r-- | Example/full_adder/full_adder_slv.vhdl | 19 | ||||
-rw-r--r-- | Example/full_adder/full_adder_structural.vhdl | 87 |
4 files changed, 0 insertions, 144 deletions
diff --git a/Example/full_adder/full_adder_sl.vhdl b/Example/full_adder/full_adder_sl.vhdl deleted file mode 100644 index e830563..0000000 --- a/Example/full_adder/full_adder_sl.vhdl +++ /dev/null @@ -1,19 +0,0 @@ -library ieee; -use ieee.std_logic_1164.all; -use ieee.numeric_std.all; - -entity full_adder_sl is - port ( - i_bit1 : in std_logic; - i_bit2 : in std_logic; - i_bit3 : in std_logic; - o_sum : out std_logic; - o_carry : out std_logic - ); -end full_adder_sl; - -architecture rtl of full_adder_sl is -begin - o_sum <= i_bit1 xor i_bit2 xor i_bit3; - o_carry <= (i_bit1 and i_bit2) or (i_bit2 and i_bit3) or (i_bit3 and i_bit1); -end rtl;
\ No newline at end of file diff --git a/Example/full_adder/full_adder_sl_slv.vhdl b/Example/full_adder/full_adder_sl_slv.vhdl deleted file mode 100644 index 7de9c1b..0000000 --- a/Example/full_adder/full_adder_sl_slv.vhdl +++ /dev/null @@ -1,19 +0,0 @@ -library ieee; -use ieee.std_logic_1164.all; -use ieee.numeric_std.all; - -entity full_adder_sl_slv is - port ( - i_bit1 : in std_logic; - i_bit2 : in std_logic; - i_bit3 : in std_logic_vector(0 downto 0); - o_sum : out std_logic; - o_carry : out std_logic_vector(0 downto 0) - ); -end full_adder_sl_slv; - -architecture rtl of full_adder_sl_slv is -begin - o_sum <= i_bit1 xor i_bit2 xor i_bit3(0); - o_carry(0) <= (i_bit1 and i_bit2) or (i_bit2 and i_bit3(0)) or (i_bit3(0) and i_bit1); -end rtl;
\ No newline at end of file diff --git a/Example/full_adder/full_adder_slv.vhdl b/Example/full_adder/full_adder_slv.vhdl deleted file mode 100644 index a0495f0..0000000 --- a/Example/full_adder/full_adder_slv.vhdl +++ /dev/null @@ -1,19 +0,0 @@ -library ieee; -use ieee.std_logic_1164.all; -use ieee.numeric_std.all; - -entity full_adder_slv is - port ( - i_bit1 : in std_logic_vector(0 downto 0); - i_bit2 : in std_logic_vector(0 downto 0); - i_bit3 : in std_logic_vector(0 downto 0); - o_sum : out std_logic_vector(0 downto 0); - o_carry : out std_logic_vector(0 downto 0) - ); -end full_adder_slv; - -architecture rtl of full_adder_slv is -begin - o_sum <= i_bit1 xor i_bit2 xor i_bit3; - o_carry <= (i_bit1 and i_bit2) or (i_bit2 and i_bit3) or (i_bit3 and i_bit1); -end rtl; diff --git a/Example/full_adder/full_adder_structural.vhdl b/Example/full_adder/full_adder_structural.vhdl deleted file mode 100644 index eb06a3d..0000000 --- a/Example/full_adder/full_adder_structural.vhdl +++ /dev/null @@ -1,87 +0,0 @@ -library ieee; -use ieee.std_logic_1164.all; - -entity full_adder_structural is -port(a: in std_logic; - b: in std_logic; - cin: in std_logic; - sum: out std_logic; - carry: out std_logic); -end full_adder_structural; - -library ieee; -use ieee.std_logic_1164.all; - -entity andgate is -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end andgate; - -architecture e1 of andgate is -begin -z <= a and b; -end e1; - -library ieee; -use ieee.std_logic_1164.all; - -entity xorgate is -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end xorgate; - -architecture e2 of xorgate is -begin -z <= a xor b; -end e2; - -library ieee; -use ieee.std_logic_1164.all; - -entity orgate is -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end orgate; - -architecture e3 of orgate is -begin -z <= a or b; -end e3; - - - -architecture structural of full_adder_structural is - -component andgate -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end component; - -component xorgate -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end component; - -component orgate -port(a: in std_logic; - b: in std_logic; - z: out std_logic); -end component; - -signal c1,c2,c3: std_logic; - -begin - -u1 : xorgate port map(a,b,c1); -u2 : xorgate port map(c1,cin,sum); -u3 : andgate port map(c1,cin,c2); -u4 : andgate port map(a,b,c3); -u5 : orgate port map(c2,c3,carry); - - -end structural;
\ No newline at end of file |