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`timescale 1ns / 1ps

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

// Company: 

// Engineer:

//

// Create Date:    10:54:17 11/21/05

// Design Name:    

// Module Name:    rxDAchecker

// Project Name:   

// Target Device:  

// Tool versions:  

// Description:

//

// Dependencies:

// 

// Revision:

// Revision 0.01 - File Created

// Additional Comments:

// 

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

module rxDAchecker(local_invalid, broad_valid, multi_valid, MAC_Addr, da_addr);

    output local_invalid;

         output broad_valid;

         output multi_valid;

    input [47:0] MAC_Addr;

         input [47:0] da_addr;

         parameter Multicast = 48'h0180C2000001;

         parameter Broadcast = 48'hffffffffffff;

         // check individual MAC address

         wire broad_valid_1;

         assign multi_valid   = (da_addr~^Multicast);

         assign broad_valid_1 = (da_addr[7:0] ~^ Broadcast[7:0]);

         assign broad_valid   = broad_valid_1 &(da_addr[47:8] ~^ Broadcast[47:8]);

         assign local_invalid = da_addr^MAC_Addr;

endmodule