picoblaze_pushbutton_tb.v

xilinx ISE 实例代码。可用ISE直接打开

module picoblaze_pushbutton_TB();

reg sr_clk;
reg sr_rst_n;
reg [ 7: 0] sr_addr;
reg         sr_wr;
reg         sr_rd;
reg [ 7: 0] sr_datain;
wire [ 7: 0] s_DataBus;
reg [ 3: 0] sr_pushbutton;
wire        s_interrupt;

initial begin
  sr_clk = 0;
  forever #10 sr_clk = ! sr_clk;
end

initial begin
  sr_rst_n = 0;
  sr_addr = 8'h0;
  sr_wr   = 0;
  sr_rd = 0;
  sr_pushbutton = 4'hF;
  sr_datain = 4'h0;
  #105 sr_rst_n = 1;
  #51 sr_pushbutton = 4'hE;
    
  


end



picoblaze_pushbutton system_inst(
  .iCLK(sr_clk),    
  .iRST_N(sr_rst_n),  
  .iADDR(sr_addr),   
  .iDATAIN(sr_datain), 
  .iWR(sr_wr),     
  .iRD(sr_rd),     
  .oHC_DBUS(s_DataBus),
  
  .iPUSHBUTTON(sr_pushbutton),
  .oINTERRUPT(s_interrupt)

);

endmodule