mux8x4.v

这个是用可编程器件进行仿真CPU的程序

//**************************************************
//** Revision    :  0.1
//** File name   :  mux8x4.v
//** Module name :  mux8x4
//** Discription :
//** Simulator   :  Max+plus II
//** Synthesizer :  Max+plus II
//** Author      :  IamFree
//** Last modified:    @ 2006///
//** Created date:  2006/03/10
//**************************************************

module mux8x4(mux_out,mux_sel,mux_a,mux_b,mux_c,mux_d);
//Parameter define
parameter width=8;

//Port define
output [width-1:0] mux_out;
input  [1:0]       mux_sel;
input  [width-1:0] mux_a;
input  [width-1:0] mux_b;
input  [width-1:0] mux_c;
input  [width-1:0] mux_d;

//Port type
reg    [width-1:0] mux_out;

//Body
always @(mux_sel or mux_a or mux_b or mux_c or mux_d)
 begin
  case(mux_sel)
   2'b00:mux_out=mux_a;
   2'b01:mux_out=mux_b;
   2'b10:mux_out=mux_c;
   2'b11:mux_out=mux_d;
  endcase
 end

endmodule