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Verilog: Half Subtractor Behavioral Modelling with Testbench Code
Verilog Code Half Subtractor Behavioral Modelling module Half_Sub ( input a, b; output diff, borr ); always @(a or b) assign {borr,diff} = (~a) + b; endmodule // test-bench initial begin a=0; b=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; #100 a=1; b=0; #100 a=1; b=1; end initial begin #100 $ monitor (“a=%b, b=%b, diff=%b, borr=%b”, a, b, diff, borr); end endmodule Xilinx Output: Half Subtractor Behavioral Modelling Verilog Code
Verilog: Half Adder Behavioral Modelling with Testbench Code
Verilog Code Half Adder Behavioral Modelling module Half_Adder ( input a, b; output sum, carry ); always @(a or b) assign {carry,sum} = a + b; endmodule // test-bench initial begin a=0; b=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; #100 a=1; b=0; #100 a=1; b=1; end initial begin #100 $ monitor (“a=%b, b=%b, sum=%b, carry=%b”, a, b, sum, carry); end endmodule Xilinx Output: Half Adder Verilog Code Behavioral Modelling
Full Subtractor Verilog Code in Behavioral Modelling with Testbench Code
Full Subtractor Verilog Code in Behavioral Modelling module Full_Sub ( input a, b, bin; output diff, borr ); always @(a or b or bin) assign {borr,diff} = (~a) + b + bin; endmodule // test-bench initial begin a=0; b=0; bin=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; bin=0; #100 a=1; b=0; bin=0; #100 a=1; b=1; bin=0; end initial begin #100 $ monitor (“a=%b, b=%b, bin=%b, diff=%b, borr=%b”, a, b, bin, diff, borr); end endmodule Xilinx Output: Full Subtractor Verilog Code Behavioral Modelling
Verilog: XNOR Gate Behavioral Modelling with Testbench Code
Verilog Code XNOR Gate Behavioral Modelling module XNOR_GATE ( input a, b, output out ); reg out; always @(a or b) begin if (a==b) out = 1’b1; else out = 1’b0; endmodule //test-bench initial begin a=0; b=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; #100 a=1; b=0; #100 a=1; b=1; end initial begin #100 $ monitor (“a=%b, b=%b, out=%b”, a, b, out); end endmodule Xilinx Output: Verilog XNOR Gate Behavioral Modelling Response
Verilog: XOR Gate Behavioral Modelling with Testbench Code
Verilog Code XOR Gate Behavioral Modelling module XOR_GATE ( input a, b, output out ); reg out; always @(a or b) begin if (a==b) out = 1’b0; else out = 1’b1; endmodule //test-bench initial begin a=0; b=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; #100 a=1; b=0; #100 a=1; b=1; end initial begin #100 $ monitor (“a=%b, b=%b, out=%b”, a, b, out); end endmodule Xilinx Output: XOR Gate Verilog Behavioral Modelling
Verilog: NOR Gate Behavioral Modelling with Testbench Code
Verilog Code NOR Gate Behavioral Modelling module NOR_GATE ( input a, b, output out ); reg out; always @(a or b) begin if (a==0 & b==0) out = 1’b1; else out = 1’b0; endmodule //test-bench initial begin a=0; b=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; b=1; #100 a=1; b=0; #100 a=1; b=1; end initial begin #100 $ monitor (“a=%b, b=%b, out=%b”, a, b, out); end endmodule Xilinx Output: NOR Gate Behavioral Modelling Verilog
Verilog: NOT Gate Behavioral Modelling with Testbench Code
Verilog Code NOT Gate Behavioral Modelling // main module NOT_GATE ( input a; output out ); reg out; always @(a) begin if (a==0) out = 1’b1; else out = 1’b0; endmodule // test-bench initial begin a=0; #100; //wait 100ns for global reset to finish //add stimulus here #100 a=0; #100 a=1; end initial begin #100 $ monitor (“a=%b, out=%b”, a, out); end endmodule Xilinx Output: Not Gate Behavioral Modelling
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VLSI: 1-4 DEMUX (Demultiplexer) Dataflow Modelling with Testbench
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VLSI: 4-1 MUX Dataflow Modelling with Testbench
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Full Subtractor Verilog Code in Structural/Gate Level Modelling with Testbench
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Verilog: 8 to 1 Multiplexer (8-1 MUX) Dataflow Modelling with Testbench Code
Verilog Code for 8 to 1 Multiplexer Dataflow Modelling module mux_8to1( input a, input b, input c, input D0, input D1, input D2, input D3, input D4, input D5, input D6, input D7, output out, ); module m81( output out, input D0, D1, D2, D3, D4, D5, D6, D7, S0, S1, S2); assign S1bar=~S1; assign S0bar=~S0; assign S2bar=~S2; assign out = (D0 & S2bar & S1bar & S0bar) | (D1 & S2bar & S1bar & S0) | (D2 & S2bar & S1 & S0bar) + (D3 & S2bar & S1 & S0) + (D4 & S2 & S1bar & S0bar) + (D5 & S2 & S1bar & S0) + (D6 & S2 & S1 & S0bar) + (D7 & S2 & S1 & S0); endmodule //Testbench code for 8-1 MUX Dataflow Modelling initial begin // Initialize Inputs a= 0;b = 0;c = 0;D0 = 1;D1 = 0;D2 = 0;D3 = 0;D4 = 0;D5 = 0;D6 = 0;D7 = 0; // Wait 100 ns for global reset to finish #100; // Add stimulus here #100; a = 0;b = 0;c = 1;d0 = ...
VLSI: Half Subtractor and Full Subtractor Gate Level Modelling
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