VLSI: 1 Bit Magnitude Comparator Dataflow Modelling with Testbench
Verilog Code for 1 Bit Magnitude Comparator Dataflow Modelling
module comparator_1_bit(
input x,
input y,
output a, //x>y
output b, //x=y
output c //x<y
);
assign xn = ~ x;
assign yn = ~ y;
assign a = x & yn;
assign c = xn & y;
assign b = ~ ( a | c );
endmodule
//Testbench code for 1 Bit Magnitude Comparator Dataflow Modelling
initial begin
// Initialize
Inputs
x
= 0;y = 0;
// Wait 100
ns for global reset to finish
#100;
// Add
stimulus here
#100;
x=0;y=1;
#100;
x=1;y=0;
#100;
x=1;y=1;
end
Output:
Popular posts from this blog
VLSI: BCD to Excess 3 and Excess 3 to BCD Dataflow Modelling
module bcd_ex3_Dataflow( input a, input b, input c, input d, output w, output x, output y, output z ); assign w = (a | (b & c) | (b & d)); assign x = (((~b) & c) | ((~b) & d) | (b & (~c) & (~d))); assign y = ((c & d) | ((~c) & (~d))); assign z = ~d; endmodule Excess 3 to BCD: module ex3_to_bcd( input w, input x, input y, input z, output a, output b, output c, output d ); assign a = ((w & x) | (w & y & z)); assign b = (((~x) & (~y)) | ((~x) & (~z)) | (x & y & z)); assign c = (((~y) & z) | (y & (~z))); assign d = ~z; endmodule
VLSI: 1-4 DEMUX (Demultiplexer) Dataflow Modelling with Testbench
Verilog Code for 1-4 DEMUX Dataflow Modelling module demux_1_to_4( input d, input s0, input s1, output y0, output y1, output y2, output y3 ); assign s1n = ~ s1; assign s0n = ~ s0; assign y0 = d& s0n & s1n; assign y1 = d & s0 & s1n; assign y2 = d & s0n & s1; assign y3 = d & s0 & s1; endmodule //Testbench code for 1-4 DEMUX Dataflow Modelling initial begin // Initialize Inputs ...
VLSI: 4-1 MUX Dataflow Modelling with Testbench
Verilog Code for 4-1 MUX Dataflow Modelling module m41(out, i0, i1, i2, i3, s0, s1); output out; input i0, i1, i2, i3, s0, s1; assign y0 = (i0 & (~s0) & (~s1)); assign y1 = (i1 & (~s0) & s1); assign y2 = (i2 & s0 & (~s1)); assign y3 = (i3 & s0 & s1); assign out = (y0 | y1 | y2 | y3); endmodule //Testbench code for 4-1 MUX Dataflow Modelling initial begin // Initialize Inputs a = 1;b = 0;c = 0;d = 0;s0 = 0;s1 = 0; ...
1 to 4 DEMUX (Demultiplexer) Verilog CodeStructural/Gate Level Modelling with Testbench
Verilog Code for 1 to 4 DEMUX Structural/Gate Level Modelling 1-4 DEMUX module demux_1_to_4( input d, input s0, input s1, output y0, output y1, output y2, output y3 ); not(s1n,s1),(s0n,s0); and(y0,d,s0n,s1n),(y1,d,s0,s1n),(y2,d,s0n,s1),(y3,d,s0,s1); endmodule //Testbench code for 1 to 4 DEMUX Structural/Gate Level Modelling initial begin // Initialize Inputs d = 1; s0 = 0; s1 = 0; // Wait 100 ns for global reset to finish #100; // Add stimulus here #100;d = 1;s0 = 1;s1 = 0; #100;d = 1;s0 = ...
VLSI: 3-8 Decoder Structural/Gate Level Modelling with Testbench
Verilog Code for 3-8 Decoder Structural/Gate Level Modelling 3-8 Line Decoder module decoder3_to_8( input x, input y, input z, output d0, output d1, output d2, output d3, output d4, output d5, output d6, output d7 ); and (d0,xn,yn,zn),(d1,xn,yn,z),(d2,xn,y,zn),(d3,xn,y,z),(d4,x,yn,zn),(d5,x,yn,z),(d6,x,y,zn),(d7,x,y,z); not (xn,x),(yn,y),(zn,z); endmodule //Testbench code for 3-8 Decoder Structural/Gate Level Modelling initial begin // Initialize Inputs x = 0;y = 0;z = 0; // Wait 100 ns for global reset to finish #100; // Add stimulus here #100;x = 0;y = 0;z = 1; #100;x = 0;y = 1;z = 0; #100;x ...
Comments
Post a Comment