module cpu(clk,rst,rd,wr,addr,data,opcode,fetch,ir_addr,pc_addr);
  input clk,rst;
  output rd,wr;
  output[4:0]addr;
  output[2:0]opcode;
  output fetch;
  output[4:0]ir_addr,pc_addr;
  inout[7:0]data;
  wire clk,rst;
  wire[7:0] data;
  wire[4:0]addr;
  wire rd,wr;
  wire fetch,alu_ena;
  wire[2:0] opcode;
  wire[4:0] ir_addr,pc_addr;
  wire[7:0] alu_out,accum;
  wire zero,inc_pc,load_acc,load_pc,load_ir;
  register m_register (.data(data),.load_ir(load_ir),.rst(rst),.clk(clk),.opcode(opcode),.ir_addr(ir_addr));
  accum m_accum (.data(alu_out),.load_acc(load_acc),.clk(clk),.rst(rst),.accum(accum));
  alu m_alu (.zero(zero),.data(data),.accum(accum),.clk(clk),.opcode(opcode),.alu_out(alu_out));
  machine m_machine (.inc_pc(inc_pc),.load_acc(load_acc),.load_pc(load_pc),.load_dr(load_dr),.rst(rst),.fetch(fetch),.rd(rd),.wr(wr),.clk(clk),.load_ir(load_ir),.zero(zero),.opcode(opcode));
  adr m_addrchoose (.fetch(fetch),.ir_addr(ir_addr),.pc_addr(pc_addr),.addr(addr));
  counter m_counter (.inc_pc(inc_pc),.rst(rst),.ir_addr(ir_addr),.load_pc(load_pc),.pc_addr(pc_addr));
  fetch m_fetch (.clk(clk),.rst(rst),.fetch(fetch));
  dr m_dr (.data(data),.alu_out(alu_out),.clk(clk),.rst(rst),.load_dr(load_dr));
endmodule

我这个算不算顶层模块