Subversion Repositories bu_pacman

`timescale 1ns / 1ps

//////////////////////////////////////////////////////////////////////////////////

// Company: 

// Engineer: 

// 

// Create Date:    00:50:54 11/20/2008 

// Design Name: 

// Module Name:    buffer_machine 

// Project Name: 

// Target Devices: 

// Tool versions: 

// Description: 

//

// Dependencies: 

//

// Revision: 

// Revision 0.01 - File Created

// Additional Comments: 

//

//////////////////////////////////////////////////////////////////////////////////

module buffer_machine(hcount,vcount,buf_cntrl);

//Inputs

input [10:0] hcount;

input [10:0] vcount;

//Outputs

output buf_cntrl;

//regs

reg buf_cntrl;

reg buf_state = 0;

//parameters

parameter state1 = 0;

parameter state2 = 1;

always @ (hcount,vcount)

begin

        if(hcount == 639 && vcount == 479) begin

                case(buf_state)

                        state1: begin

                                buf_state <= state2;

                                buf_cntrl <= 1;

                                end

                        state2: begin

                                buf_state <= state1;

                                buf_cntrl <= 0;

                                end

                        endcase

                end

end

endmodule