yosys/tests/asicworld/code_hdl_models_encoder_usi...

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2013-01-05 04:13:26 -06:00
//-----------------------------------------------------
// Design Name : encoder_using_case
// File Name : encoder_using_case.v
// Function : Encoder using Case
// Coder : Deepak Kumar Tala
//-----------------------------------------------------
module encoder_using_case(
binary_out , // 4 bit binary Output
encoder_in , // 16-bit Input
enable // Enable for the encoder
);
output [3:0] binary_out ;
input enable ;
input [15:0] encoder_in ;
reg [3:0] binary_out ;
always @ (enable or encoder_in)
begin
binary_out = 0;
if (enable) begin
case (encoder_in)
16'h0002 : binary_out = 1;
16'h0004 : binary_out = 2;
16'h0008 : binary_out = 3;
16'h0010 : binary_out = 4;
16'h0020 : binary_out = 5;
16'h0040 : binary_out = 6;
16'h0080 : binary_out = 7;
16'h0100 : binary_out = 8;
16'h0200 : binary_out = 9;
16'h0400 : binary_out = 10;
16'h0800 : binary_out = 11;
16'h1000 : binary_out = 12;
16'h2000 : binary_out = 13;
16'h4000 : binary_out = 14;
16'h8000 : binary_out = 15;
endcase
end
end
endmodule