// 不封函数 // assign c = {a[0], a[1], a[2], a[3]}; // assign d = {b[0], b[1], b[2], b[3]}; assign c = END_CONVERT(a); assign d = END_CONVERT(b); // 封函数 function [3:0] END_CONVERT; input [3:0] a; //input [3:0] b; begin assign END_CONVERT = {a[0], a[1], a[2], a[3]};...