module ternary_full_adder ( input [1:0] A, [1:0] B, [1:0] c_in, output [1:0] sum, [1:0] c_out ); wire [1:0] temp1 = 2'b01; wire [1:0] temp2 = 2'b00; wire [1:0] a0, a1, a2, b0, b1, b2, a20; wire [1:0] i0, i1, i2, i3, i4; wire [1:0] i5, i6, i7, i8, i9, i10, i11, i12, i13, i14, i15, i16, i17; wire [1:0] o0, o1, o2, o3, o4, o5, o6, o7, o8, o9; wire [1:0] c0, c1, c2; wire [1:0] h0, h1, h2, h3, h4, h5, h6, h7; wire [1:0] t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12, t13, t14, t15, t16; wire [1:0] g0, g1, g2, g3, g4, g5, g6, g7, g8, g9, g10, g11, g12, g13, g14, g15; mask mk_1(A, a0, a1, a2); mask mk_2(B, b0, b1, b2); mask mk_3(c_in, c0, c1, c2); andgate3 and3_1(a2,b0,c0, i0); andgate3 and3_2(a1,b0,c1, i1); andgate3 and3_3(a0,b0,c2, i2); andgate3 and3_4(a1,b1,c0, i3); andgate3 and3_5(a0,b1,c1, i4); andgate3 and3_6(a2,b1,c2, i5); andgate3 and3_7(a0,b2,c0, i6); andgate3 and3_8(a2,b2,c1, i7); andgate3 and3_9(a1,b2,c2, i8); andgate3 and3_10(a1,b0,c0, i9); andgate3 and3_11(a0,b0,c1, i10); orgate or__(a2, a0, a20); andgate3 and3_12(a20,b0,c2, i11); // note a20 andgate3 and3_13(a0,b1,c0, i12); andgate3 and3_14(a2,b1,c1, i13); andgate3 and3_15(a1,B,c2, i14); andgate3 and3_16(a2,b2,c0, i15); andgate3 and3_17(a1,b2,c1, i16); andgate3 and3_18(temp2,b2,c2, i17); orgate or_1(i9, i10, o0); orgate or_2(o0, i11, o1); orgate or_3(o1, i12, o2); orgate or_4(o2, i13, o3); orgate or_5(o3, i14, o4); orgate or_6(o4, i15, o5); orgate or_7(o5, i16, o6); orgate or_8(o6, i17, o7); andgate and_1(o7, temp1, o8); // 1.f2 orgate or_9(i0, i1, h0); orgate or_10(h0, i2, h1); orgate or_11(h1, i3, h2); orgate or_12(h2, i4, h3); orgate or_13(h3, i5, h4); orgate or_14(h4, i6, h5); orgate or_15(h5, i7, h6); orgate or_16(h6, i8, h7); orgate or_17_(h7, o8, sum); // sum // carry andgate3 and3_19(a2,b2,c2, t0); // f1 andgate3 and3_20(a0,b1,c2, t1); andgate3 and3_21(a0,b2,c2, t2); andgate3 and3_22(a0,b2,c1, t3); andgate3 and3_23(a1,b2,c0, t4); andgate3 and3_24(a2,b2,c0, t5); andgate3 and3_25(a1,b1,c1, t6); andgate3 and3_26(a1,b2,c1, t7); andgate3 and3_27(a1,b0,c2, t8); andgate3 and3_28(a1,b1,c2, t9); andgate3 and3_29(a1,b2,c2, t10); andgate3 and3_25_(a2,b0,c2, t11); andgate3 and3_26_(a2,b1,c2, t12); andgate3 and3_27_(a2,b0,c1, t13); andgate3 and3_28_(a2,b1,c1, t14); andgate3 and3_29_(a2,b2,c1, t15); andgate3 and3_9_(a2,b1,c0, t16); orgate or_17(t1, t2, g0); orgate or_18(g0, t3, g1); orgate or_19(g1, t4, g2); orgate or_20(g2, t5, g3); orgate or_21(g3, t6, g4); orgate or_22(g4, t7, g5); orgate or_23(g5, t8, g6); orgate or_24(g6, t9, g7); orgate or_25(g7, t10, g8); orgate or_21_(g8, t11, g9); orgate or_22_(g9, t12, g10); orgate or_23_(g10, t13, g11); orgate or_24_(g11, t14, g12); orgate or_25_(g12, t15, g13); orgate or_5_(g13, t16, g14); //f2 andgate and_2(g14, temp1, g15); // 1.f2 orgate or_26(g15, t0, c_out); // carry endmodule