module spec_trans(scan_code,byte,bit, shift,ss);
    input [7:0] scan_code;
    output reg [2:0] byte;
    output reg [2:0] bit;
    output reg shift,ss;

/*
	7	  6    5  4  3  2  1  0

4 	B         H    Y  6  5  T  G  V
3 	N         J    U  7  4  R  F  C
2 	M         K    I  8  3  E  D  X
1 	SYMBOL    L    0  9  2  W  S  Z
 	SHIFT
0 	SPACE   ENTER  P  0  1  Q  A  shift

*/

   always @(scan_code) begin
   shift <= 0; 
   case (scan_code)

    8'h74 : begin // =>
      	byte <= 2;
     	bit <= 4;
	shift <= 1;
      // 8
    end

    8'h75 : begin  // UP
      	byte <= 3;
     	bit <= 4;
	shift <= 1;
      // 7
    end

   8'h6b : begin  // <=
      	byte <= 4;
     	bit <= 3;
	shift <= 1;
      // 5
    end

    8'h72 : begin     // DOWN
      	byte <= 4;
     	bit <= 4;
	shift <= 1;
      // 6
    end
 

    8'h66: begin
          // backspace map to shift-0
	byte <= 0;
     	bit <= 4;
	shift <= 1;
    end


    8'h59: begin
          // right shift
	byte <= 0;
     	bit <= 0;
	shift <= 1;
    end
    8'h12: begin
          // shift
	byte <= 0;
     	bit <= 0;
    end
    8'h11: begin
          // alt
	byte <= 1;
     	bit <= 7;
    end

    8'h5a: begin
          // Carriage return ("enter" key)
	byte <= 0;
     	bit <= 6;
    end
    8'h29 : begin
      // Space
      	byte <= 0;
     	bit <= 7;
    end
    8'h45 : begin
      	byte <= 0;
     	bit <= 4;
      // 0
    end
    8'h16 : begin
      	byte <= 0;
     	bit <= 3;
      // 1
    end
    8'h1e : begin
      	byte <= 1;
     	bit <= 3;
      // 2
    end
    8'h26 : begin
      	byte <= 2;
     	bit <= 3;
      // 3
    end
    8'h25 : begin
      	byte <= 3;
     	bit <= 3;
      // 4
    end
    8'h2e : begin
      	byte <= 4;
     	bit <= 3;
      // 5
    end
    8'h36 : begin
      	byte <= 4;
     	bit <= 4;
      // 6
    end
    8'h3d : begin
      	byte <= 3;
     	bit <= 4;
      // 7
    end
    8'h3e : begin
      	byte <= 2;
     	bit <= 4;
      // 8
    end
    8'h46 : begin
      	byte <= 1;
     	bit <= 4;
      // 9
    end
    8'h1c : begin
      	byte <= 0;
     	bit <= 1;
      // a
    end
    8'h32 : begin
      	byte <= 4;
     	bit <= 7;
      // b
    end
    8'h21 : begin
      	byte <= 3;
     	bit <= 0;
      // c
    end
    8'h23 : begin
      	byte <= 2;
     	bit <= 1;
      // d
    end
    8'h24 : begin
      	byte <= 2;
     	bit <= 2;
      // e
    end
    8'h2b : begin
      	byte <= 3;
     	bit <= 1;
      // f
    end
    8'h34 : begin
      	byte <= 4;
     	bit <= 1;
      // g
    end
    8'h33 : begin
      	byte <= 4;
     	bit <= 6;
      // h
    end
    8'h43 : begin
      	byte <= 2;
     	bit <= 5;
      // i
    end
    8'h3b : begin
      	byte <= 3;
     	bit <= 6;
      // j
    end
    8'h42 : begin
      	byte <= 2;
     	bit <= 6;
      // k
    end
    8'h4b : begin
      	byte <= 1;
     	bit <= 6;
      // l
    end
    8'h3a : begin
      	byte <= 2;
     	bit <= 7;
      // m
    end
    8'h31 : begin
      	byte <= 3;
     	bit <= 7;
      // n
    end
    8'h44 : begin
      	byte <= 1;
     	bit <= 5;
      // o
    end
    8'h4d : begin
      	byte <= 0;
     	bit <= 5;
      // p
    end
    8'h15 : begin
      	byte <= 0;
     	bit <= 2;
      // q
    end
    8'h2d : begin
      	byte <= 3;
     	bit <= 2;
      // r
    end
    8'h1b : begin
      	byte <= 1;
     	bit <= 1;
      // s
    end
    8'h2c : begin
      	byte <= 4;
     	bit <= 2;
     // t
    end
    8'h3c : begin
      	byte <= 3;
     	bit <= 5;
      // u
    end
    8'h2a : begin
      	byte <= 4;
     	bit <= 0;
      // v
    end
    8'h1d : begin
      	byte <= 1;
     	bit <= 2;
      // w
    end
    8'h22 : begin
      	byte <= 2;
     	bit <= 0;
      // x
    end
    8'h35 : begin
      	byte <= 4;
     	bit <= 5;
      // y
    end
    8'h1a : begin
      	byte <= 1;
     	bit <= 0;
      // z
    end

    default : begin
      	byte <= 5;
     	bit <= 7;
      // 0x00 used for unlisted characters.
    end
    endcase
   end //always


endmodule