6 bit Full adder using 3 bit Full adder
Full Adder Full Adder : module full_add(output s,c,input a,b,cin); assign s=a^b^cin; assign c= (a&b)|cin &(a^b); endmodule 3bit Full Adder module bit3_full (s,c,a,b,cin); output [2:0]s;output c;input [2:0] a,b;input cin; reg w1,w2; full_add full_adder_Inst1 ( s[0],w1,a[0],b[0],cin); full_add full_adder_Inst2 ( s[1],w2,a[1],b[1],w1); full_add full_adder_Inst3 ( s[2],c,a[2],b[2],w2); endmodule 6bit Full Adder module sbit_full(s,c,a,b,cin); output [5:0]s;output c;input [5:0] a,b;input cin; reg w1; bit3_full bit3_full_insta1 (s[2:0],w1,a[2:0],b[2:0],cin); bit3_full bit3_full_insta2 (s[5:3],c,a[5:3],b[5:3],w1); endmodule TESTBENCH : module test ; wire [5:0] s; wire c; reg [5:0] a,b; reg cin; sbit_full insta (.s(s),.c(c),.a(a),.b(b),.cin(cin)); initial begin...