怎样写testbench 本文的实际编程环境：ISE 6.2i.03 ModelSim 5.8 SE Synplify Pro 7.6 编程语言 VHDL 在ISE 中调用ModelSim 进行仿真-、assert (s_cyi((DWIDTH-1)/4) = 0 ) and (s_ovi = 0 ) and (s_qutnt = conv_std_logic_vector(v_quot,DWIDTH)) and (s_rmndr = conv_std_log