From 8b5598a275b0b0bad61feb1d2afabd42c2e38daf Mon Sep 17 00:00:00 2001 From: crupest Date: Fri, 24 Dec 2021 19:36:03 +0800 Subject: import(life): ... --- .../life/computer-organization-experiment/alu.vhdl | 25 ---------------------- 1 file changed, 25 deletions(-) delete mode 100644 works/life/computer-organization-experiment/alu.vhdl (limited to 'works/life/computer-organization-experiment/alu.vhdl') diff --git a/works/life/computer-organization-experiment/alu.vhdl b/works/life/computer-organization-experiment/alu.vhdl deleted file mode 100644 index 5eed3df..0000000 --- a/works/life/computer-organization-experiment/alu.vhdl +++ /dev/null @@ -1,25 +0,0 @@ -LIBRARY IEEE; -USE IEEE.STD_LOGIC_1164.ALL; -use ieee.numeric_std.all; - -entity alu is - port ( - A, B: in std_logic_vector(31 downto 0); - ALUC: in std_logic_vector(3 downto 0); - S: out std_logic_vector(31 downto 0); - Z: out std_logic); -end entity; - -architecture Behavioral of alu is -begin - S <= A + B when ALUC(2 downto 0) = B"000" - else A - B when ALUC(2 downto 0) ?= B"001" - else A and B when ALUC(2 downto 0) ?= B"100" - else A or B when ALUC(2 downto 0) ?= B"101" - else A xor B when ALUC(2 downto 0) ?= B"010" - else std_logic_vector(signed(A) sll 16) and H"FFFF0000" when ALUC(2 downto 0) ?= B"110" - else std_logic_vector(signed(A) sll to_integer(unsigned(B))) when ALUC ?= B"0011" - else std_logic_vector(signed(A) srl to_integer(unsigned(B))) when ALUC ?= B"0111" - else std_logic_vector(signed(A) sra to_integer(unsigned(B))) when ALUC ?= B"1111"; - Z <= S ?= H"00000000"; -end architecture; -- cgit v1.2.3