merge bin2bcd implementation from testbench into `master`

1 files changed, 33 insertions, 0 deletions

diff --git a/adder-and-display/adder-and-display.srcs/sources_1/bin2bcd.vhd b/adder-and-display/adder-and-display.srcs/sources_1/bin2bcd.vhd
new file mode 100644
index 0000000..548c9e5
--- /dev/null
+++ b/adder-and-display/adder-and-display.srcs/sources_1/bin2bcd.vhd
@@ -0,0 +1,33 @@
+library IEEE;
+use IEEE.STD_LOGIC_1164.ALL;
+
+entity bin2bcd is port(
+	I: in std_logic_vector(4 downto 0);
+	X: out std_logic_vector(3 downto 0);
+	Y: out std_logic_vector(3 downto 0));
+end bin2bcd;
+
+architecture Behavioral of bin2bcd is
+begin
+	with I select
+		X <=
+			b"0000" when b"00000" | b"01010" | b"10100" | b"11110",
+			b"0001" when b"00001" | b"01011" | b"10101" | b"11111",
+			b"0010" when b"00010" | b"01100" | b"10110",
+			b"0011" when b"00011" | b"01101" | b"10111",
+			b"0100" when b"00100" | b"01110" | b"11000",
+			b"0101" when b"00101" | b"01111" | b"11001",
+			b"0110" when b"00110" | b"10000" | b"11010",
+			b"0111" when b"00111" | b"10001" | b"11011",
+			b"1000" when b"01000" | b"10010" | b"11100",
+			b"1001" when b"01001" | b"10011" | b"11101",
+			(others => '0') when others;
+	with I select
+		Y <=
+			b"0000" when b"00000" | b"00001" | b"00010" | b"00011" | b"00100" | b"00101" | b"00110" | b"00111" | b"01000" | b"01001",
+			b"0001" when b"01010" | b"01011" | b"01100" | b"01101" | b"01110" | b"01111" | b"10000" | b"10001" | b"10010" | b"10011",
+			b"0010" when b"10100" | b"10101" | b"10110" | b"10111" | b"11000" | b"11001" | b"11010" | b"11011" | b"11100" | b"11101",
+			b"0011" when b"11110" | b"11111",
+			(others => '0') when others;
+end Behavioral;
+