design/sys/iop/niu/rtl/niu_pio_decoder_6to64.v

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//
// OpenSPARC T2 Processor File: niu_pio_decoder_6to64.v
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
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/***********************************************/
/* This file is genetated from decoder.c       */
/* This program is created by John Lo          */
/***********************************************/

module niu_pio_decoder_6to64 (clk,reset,ldgn,ldgn_map);
input            clk;
input            reset;

input  [5:0]     ldgn;
output [63:0]    ldgn_map;


reg    [63:0]    ldgn_map_int;
reg    [63:0]    ldgn_map;

 always @ (ldgn)
   casex(ldgn[5:0])  /* synopsys parallel_case full_case */
 /* --------- the first 32 ------------------- */
     6'd0: ldgn_map_int[63:0] = 64'h1;
     6'd1: ldgn_map_int[63:0] = 64'h2;
     6'd2: ldgn_map_int[63:0] = 64'h4;
     6'd3: ldgn_map_int[63:0] = 64'h8;
     6'd4: ldgn_map_int[63:0] = 64'h10;
     6'd5: ldgn_map_int[63:0] = 64'h20;
     6'd6: ldgn_map_int[63:0] = 64'h40;
     6'd7: ldgn_map_int[63:0] = 64'h80;
     6'd8: ldgn_map_int[63:0] = 64'h100;
     6'd9: ldgn_map_int[63:0] = 64'h200;
     6'd10: ldgn_map_int[63:0] = 64'h400;
     6'd11: ldgn_map_int[63:0] = 64'h800;
     6'd12: ldgn_map_int[63:0] = 64'h1000;
     6'd13: ldgn_map_int[63:0] = 64'h2000;
     6'd14: ldgn_map_int[63:0] = 64'h4000;
     6'd15: ldgn_map_int[63:0] = 64'h8000;
     6'd16: ldgn_map_int[63:0] = 64'h10000;
     6'd17: ldgn_map_int[63:0] = 64'h20000;
     6'd18: ldgn_map_int[63:0] = 64'h40000;
     6'd19: ldgn_map_int[63:0] = 64'h80000;
     6'd20: ldgn_map_int[63:0] = 64'h100000;
     6'd21: ldgn_map_int[63:0] = 64'h200000;
     6'd22: ldgn_map_int[63:0] = 64'h400000;
     6'd23: ldgn_map_int[63:0] = 64'h800000;
     6'd24: ldgn_map_int[63:0] = 64'h1000000;
     6'd25: ldgn_map_int[63:0] = 64'h2000000;
     6'd26: ldgn_map_int[63:0] = 64'h4000000;
     6'd27: ldgn_map_int[63:0] = 64'h8000000;
     6'd28: ldgn_map_int[63:0] = 64'h10000000;
     6'd29: ldgn_map_int[63:0] = 64'h20000000;
     6'd30: ldgn_map_int[63:0] = 64'h40000000;
     6'd31: ldgn_map_int[63:0] = 64'h80000000;
 /* --------- the second 32 ------------------------ */
     6'd32: ldgn_map_int[63:0] = 64'h1_00000000;
     6'd33: ldgn_map_int[63:0] = 64'h2_00000000;
     6'd34: ldgn_map_int[63:0] = 64'h4_00000000;
     6'd35: ldgn_map_int[63:0] = 64'h8_00000000;
     6'd36: ldgn_map_int[63:0] = 64'h10_00000000;
     6'd37: ldgn_map_int[63:0] = 64'h20_00000000;
     6'd38: ldgn_map_int[63:0] = 64'h40_00000000;
     6'd39: ldgn_map_int[63:0] = 64'h80_00000000;
     6'd40: ldgn_map_int[63:0] = 64'h100_00000000;
     6'd41: ldgn_map_int[63:0] = 64'h200_00000000;
     6'd42: ldgn_map_int[63:0] = 64'h400_00000000;
     6'd43: ldgn_map_int[63:0] = 64'h800_00000000;
     6'd44: ldgn_map_int[63:0] = 64'h1000_00000000;
     6'd45: ldgn_map_int[63:0] = 64'h2000_00000000;
     6'd46: ldgn_map_int[63:0] = 64'h4000_00000000;
     6'd47: ldgn_map_int[63:0] = 64'h8000_00000000;
     6'd48: ldgn_map_int[63:0] = 64'h10000_00000000;
     6'd49: ldgn_map_int[63:0] = 64'h20000_00000000;
     6'd50: ldgn_map_int[63:0] = 64'h40000_00000000;
     6'd51: ldgn_map_int[63:0] = 64'h80000_00000000;
     6'd52: ldgn_map_int[63:0] = 64'h100000_00000000;
     6'd53: ldgn_map_int[63:0] = 64'h200000_00000000;
     6'd54: ldgn_map_int[63:0] = 64'h400000_00000000;
     6'd55: ldgn_map_int[63:0] = 64'h800000_00000000;
     6'd56: ldgn_map_int[63:0] = 64'h1000000_00000000;
     6'd57: ldgn_map_int[63:0] = 64'h2000000_00000000;
     6'd58: ldgn_map_int[63:0] = 64'h4000000_00000000;
     6'd59: ldgn_map_int[63:0] = 64'h8000000_00000000;
     6'd60: ldgn_map_int[63:0] = 64'h10000000_00000000;
     6'd61: ldgn_map_int[63:0] = 64'h20000000_00000000;
     6'd62: ldgn_map_int[63:0] = 64'h40000000_00000000;
     6'd63: ldgn_map_int[63:0] = 64'h80000000_00000000;
     default: ldgn_map_int[63:0] = 64'b0;
  endcase

always @ (posedge clk)
 begin
  if (reset)
   ldgn_map <= 64'b0 ;
  else
   ldgn_map <= ldgn_map_int ;
 end

endmodule // niu_pio_decoder_6to64