Subversion Repositories theia_gpu

`timescale 1ns / 1ps

`include "aDefinitions.v"

//-----------------------------------------------------------

module FixedAddSub

(

input    wire                                   Clock,

input  wire                                     Reset,

input  wire[`LONG_WIDTH-1:0]     A,

input  wire[`LONG_WIDTH-1:0]     B,

output reg[`LONG_WIDTH-1:0]      R,

input   wire                                            iOperation,

input   wire                                    iInputReady,            //Is the input data valid?

output wire                                     OutputReady             //Our output data is ready!

);

reg MyOutputReady = 0;

wire [`LONG_WIDTH-1:0] wB;

assign wB = ( iOperation ) ? ~B + 1'b1 : B;

//Output ready just take 1 cycle

//assign OutputReady = iInputReady;

FFD_POSEDGE_ASYNC_RESET #(1) FFOutputReadyDelay2

(

        .Clock( Clock ),

        .Clear( Reset ),

        .D( iInputReady ),

        .Q( OutputReady )

);

//-------------------------------       

always @ (posedge Clock)

begin

if (iInputReady == 1)

begin

          R = ( A + wB );

end

else

begin

                R = 64'hFFFFFFFF;

end

end // always

endmodule