Adder Subtractor2
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Name- Karanbeer Singh Roll No- B37 Reg No-11210257 Section- E1201 Aim: Implement Half Adder, Full Adder, Half Substractor and Full Subtractor in Verilog. Learning Objectives: Learn to implement various operations. Learn to implement wire function. Program codes: Half Adder module hhimanshu_A22(s, c, a, b); output s; output c; input a; input b; assign s=a^b; assign c=a&b; endmodule TEST BENCH module ch_v; // Inputs reg a; reg b; // Outputs wire s; wire c; // Instantiate the Unit Under Test (UUT) hhimanshu_A22 uut ( .s(s), .c(c), .a(a), .b(b)
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Adder Subrator verilog HDL
Transcript of Adder Subtractor2
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Name- Karanbeer Singh
Roll No- B37
Reg No-11210257
Section- E1201
Aim: Implement Half Adder, Full Adder, Half Substractor and Full Subtractor in Verilog.
Learning Objectives:
Learn to implement various operations.
Learn to implement wire function.
Program codes:
Half Adder
module hhimanshu_A22(s, c, a,
b); output s; output c; input
a;
input b; assign
s=a^b; assign
c=a&b;
endmodule
TEST BENCH
module ch_v;
// Inputs
reg a;
reg b;
// Outputs
wire s;
wire c;
// Instantiate the Unit Under Test (UUT)
hhimanshu_A22 uut (
.s(s),
.c(c),
.a(a),
.b(b)
-
);
initial begin // Initialize
Inputs a = 0; b =
0;
// Wait 100 ns for global reset to finish
#4; a
= 0; b
= 1;
#4;
a = 1;
b = 0;
#4;
a = 1;
b = 1;
end
endmodule
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Full Adder
module FA(s, c, x, y,
z); output s;
output c; input x;
input y; input z;
wire p,q,r; xor(s,x,y,z);
and(p,x,y); and(q,y,z);
and(r,x,z); or(c,p,q,r);
endmodule
TEST BENCH
module v_v;
// Inputs
reg x;
reg y;
reg z;
// Outputs
wire s;
wire c;
// Instantiate the Unit Under Test (UUT)
FA uut (
.s(s),
.c(c),
.x(x),
.y(y),
.z(z)
);
initial begin // Initialize
Inputs x = 0; y =
0; z = 0;
// Wait 100 ns for global reset to finish
#2; x
= 0; y
= 0; z
= 1;
#2;
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x = 0; y = 1; z =
0; #2;
x = 0; y = 1; z =
1; #2;
x = 1; y = 0; z =
0; #2;
x = 1; y = 0; z =
1; #2;
x = 1; y = 1; z =
0; #2;
x = 1; y = 1; z =
1; end
endmodule
Half Subtractor
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module HS(d, b, x,
y); output d;
output b; input x;
input y; wire p;
xor(d,x,y); not(p,y);
and(b,x,p);
endmodule
TEST BENCH
module k_v;
// Inputs
reg x;
reg y;
// Outputs
wire d;
wire b;
// Instantiate the Unit Under Test (UUT)
HS uut (
.d(d),
.b(b),
.x(x),
.y(y)
);
initial begin // Initialize
Inputs x = 0; y =
0;
// Wait 100 ns for global reset to finish
#3; x
= 0; y
= 1;
#3; x
= 1; y
= 0;
#3; x
= 1; y
= 1;
end
endmodule
-
Full Subtractor:
module FS(d, b, x, y, z);
output d; output b;
input x; input y; input
z; wire p,q,r,s; assign
d=((x^y)^z); assign s=~x;
assign p=s&y; assign
q=s&z; assign r=y&z;
assign b=((p|q)|r);
endmodule
TEST BENCH
module f_v;
// Inputs
reg x;
reg y;
reg z;
-
// Outputs
wire d;
wire b;
// Instantiate the Unit Under Test (UUT)
FS uut (
.d(d),
.b(b),
.x(x),
.y(y),
.z(z)
);
initial begin // Initialize
Inputs x = 0; y =
0; z = 0;
// Wait 100 ns for global reset to finish
#2; x
= 0; y
= 0; z
= 1;
#2; x
= 0; y
= 1; z
= 0;
#2; x
= 0; y
= 1; z
= 1;
#2; x
= 1; y
= 0; z
= 0;
#2; x
= 1; y
= 0; z
= 1;
#2; x
= 1; y
= 1; z
= 0;
#2; x
= 1; y
= 1; z
= 1;
-
end
endmodule
