夏宇闻老师的代码，在ise编译代码不通过

zjsx8192 · 发表于 2020-11-5 18:18:59

夏宇闻老师的代码，在ise中编译不通过：
task shift_in;
      output[7:0] shift_t;

      begin
         @(posedge SCL) shift_t[7] = SDA;
         @(posedge SCL) shift_t[6] = SDA;
         @(posedge SCL) shift_t[5] = SDA;
         @(posedge SCL) shift_t[4] = SDA;
         @(posedge SCL) shift_t[3] = SDA;
         @(posedge SCL) shift_t[2] = SDA;
         @(posedge SCL) shift_t[1] = SDA;
         @(posedge SCL) shift_t[0] = SDA;
         @(negedge SCL)
            begin
                  #100;
                  out_flag = 1;    //应答信号输出
                  sda_buf = 0;
            end

         @(negedge SCL) #100 out_flag = 0;
      end
endtask
这段代码在ise13版本中编译不过，是代码问题还是编译器问题呢？改怎么修改？