mux_4_32_ca_if.v

来自「Vlerilog HDL高级数字设计源码」· Verilog 代码 · 共 17 行

module Mux_4_32_if   (mux_out, data_3, data_2, data_1, data_0, select, enable);
  output 	[31: 0] 	mux_out;
  input 	[31: 0] 	data_3, data_2, data_1, data_0;
  input 	[1: 0] 	select;
  input 		enable;
  reg 	[31: 0]	mux_int;

  assign mux_out = enable ? mux_int : 32'bz;

  always @ ( data_3 or data_2 or data_1 or data_0 or select)
    if (select == 0) mux_int = data_0; else
      if (select == 1) mux_int = data_1; else 
        if (select == 2) mux_int = data_2; else 
          if (select == 3) mux_int = data_3; else mux_int = 32'bx;
endmodule