module verilog_complex_bus_test (clk,
    data_a,
    data_b,
    result,
    carry,
    overflow);
 input clk;
 input [7:0] data_a;
 input [7:0] data_b;
 output [7:0] result;
 output carry;
 output overflow;

 wire internal_carry;
 wire internal_overflow;
 wire [7:0] stage1;
 wire [7:0] stage2;

 AND2_X1 and0 (.A1(stage1[0]),
    .A2(data_b[0]),
    .ZN(stage2[0]));
 AND2_X1 and1 (.A1(stage1[1]),
    .A2(data_b[1]),
    .ZN(stage2[1]));
 AND2_X1 and2 (.A1(stage1[2]),
    .A2(data_b[2]),
    .ZN(stage2[2]));
 AND2_X1 and3 (.A1(stage1[3]),
    .A2(data_b[3]),
    .ZN(stage2[3]));
 AND2_X1 and4 (.A1(stage1[4]),
    .A2(data_b[4]),
    .ZN(stage2[4]));
 AND2_X1 and5 (.A1(stage1[5]),
    .A2(data_b[5]),
    .ZN(stage2[5]));
 AND2_X1 and6 (.A1(stage1[6]),
    .A2(data_b[6]),
    .ZN(stage2[6]));
 AND2_X1 and7 (.A1(stage1[7]),
    .A2(data_b[7]),
    .ZN(stage2[7]));
 AND2_X1 and_ovfl (.A1(stage2[7]),
    .A2(stage2[6]),
    .ZN(internal_overflow));
 BUF_X1 buf_a0 (.A(data_a[0]),
    .Z(stage1[0]));
 BUF_X1 buf_a1 (.A(data_a[1]),
    .Z(stage1[1]));
 BUF_X1 buf_a2 (.A(data_a[2]),
    .Z(stage1[2]));
 BUF_X1 buf_a3 (.A(data_a[3]),
    .Z(stage1[3]));
 BUF_X1 buf_a4 (.A(data_a[4]),
    .Z(stage1[4]));
 BUF_X1 buf_a5 (.A(data_a[5]),
    .Z(stage1[5]));
 BUF_X1 buf_a6 (.A(data_a[6]),
    .Z(stage1[6]));
 BUF_X1 buf_a7 (.A(data_a[7]),
    .Z(stage1[7]));
 BUF_X1 buf_carry (.A(internal_carry),
    .Z(carry));
 BUF_X1 buf_ovfl (.A(internal_overflow),
    .Z(overflow));
 OR2_X1 or_carry (.A1(stage2[7]),
    .A2(stage2[6]),
    .ZN(internal_carry));
endmodule