由全加器的逻辑图可以得出全加器的逻辑方程为: p =a⊕b S = p ⊕ Cin Cout = agb + p ⋅Cin 根据全加器的逻辑方程可以写出其 VHDL 数据流模型如下: library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; entity full_adder is Port ( a,b,cin: in bit; s,cout:...
Concurrent signal assignments are concurrently active and re-evaluated when any signal on the right side of the assignment changes value. The re-evaluated result is assigned to the signal on the left-hand side. Supported types of concurrent signal assignments are: Simple Signal Assignment Example, ...
Variables are assigned using variable assignment statements (:<) and are immediately updated inside the scope of the current scope.Discuss this Question 58. An entity can have multiple architectures?True FalseAnswer: A) TrueExplanation:An entity can have multiple architectures....
ENTITY Ram_Rom IS PORT(clk: in std_logic; inaddress : in std_logic_vector(7 downto 0); data : out std_logic_vector(7 downto 0)); end Ram_Rom; ARCHITECTURE new_array_arch OF Ram_Rom IS signal data1 : STD_LOGIC_vector(7 downto 0); begin u1: lpm_rom GEN...
The root entity (highlighted above) is COM5402.vhd. It contains instantiations of the IP protocols and a transmit arbitration mechanism to select the next packet to send to the MAC/PHY. The root also includes the following components: - The PACKET_PARSING.vhd component parses the received ...
ENTITY Ram_Rom IS PORT(clk: in std_logic; inaddress : in std_logic_vector(7 downto 0); data : out std_logic_vector(7 downto 0)); end Ram_Rom; ARCHITECTURE new_array_arch OF Ram_Rom IS signal data1 : STD_LOGIC_vector(7 downto 0); ...