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Line 154... |
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module FixedPointSquareRoot
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module FixedPointSquareRoot
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(
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(
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input wire Clock,
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input wire Clock,
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input wire Reset,
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input wire Reset,
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input wire[`LONG_WIDTH-1:0] Operand,
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input wire[`LONG_WIDTH-1:0] iOperand,
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input wire iInputReady,
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input wire iInputReady,
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output wire OutputReady,
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output wire oOutputReady,
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output wire [`WIDTH-1:0] Result
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output wire [`WIDTH-1:0] oResult
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);
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);
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FFD_POSEDGE_SYNCRONOUS_RESET # (1) FFDelay1
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FFD_POSEDGE_SYNCRONOUS_RESET # (1) FFDelay1
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(
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(
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.Clock( Clock ),
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.Clock( Clock ),
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.Reset( Reset ),
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.Reset( Reset ),
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.Enable(1'b1 ),
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.Enable(1'b1 ),
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.D( iInputReady ),
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.D( iInputReady ),
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.Q( OutputReady )
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.Q( oOutputReady )
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);
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);
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//LUT only has values from 0 to 127, lets see if the value is bigger than that
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//LUT only has values from 0 to 127, lets see if the value is bigger than that
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wire wNotInLUT;
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wire wNotInLUT;
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assign wNotInLUT = Operand[7+`SCALE];
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assign wNotInLUT = iOperand[7+`SCALE];
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//If the value is not on the LUT then divide by 64, so SQRT(x) = SQRT(64*x/64)
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//If the value is not on the LUT then divide by 64, so SQRT(x) = SQRT(64*x/64)
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//=16*SQRT(x/64)
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//=16*SQRT(x/64)
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wire[`WIDTH-1:0] wScaledOperand;
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wire[`WIDTH-1:0] wScaledOperand;
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assign wScaledOperand = (wNotInLUT == 1'b0 ) ?
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assign wScaledOperand = (wNotInLUT == 1'b0 ) ?
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{Operand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}} : //Aproximate the Square root to an integer value
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{iOperand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}} : //Aproximate the Square root to an integer value
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{6'b0,Operand[`WIDTH-1:`SCALE+6],{`SCALE{1'b0}}}; //Shift right two bits (divide by 4)
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{6'b0,iOperand[`WIDTH-1:`SCALE+6],{`SCALE{1'b0}}}; //Shift right two bits (divide by 4)
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wire [`WIDTH-1:0] wResult,wScaleResult;
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wire [`WIDTH-1:0] wResult,wScaleResult;
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SQUAREROOT_LUT SQRT
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SQUAREROOT_LUT SQRT
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(
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(
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.I(wScaledOperand),
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.I(wScaledOperand),
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Line 201... |
(
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(
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.Clock( Clock ),
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.Clock( Clock ),
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.Reset( Reset ),
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.Reset( Reset ),
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.Enable(1'b1 ),
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.Enable(1'b1 ),
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.D( wResult ),
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.D( wResult ),
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.Q( Result )
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.Q( oResult )
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);
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);
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//--------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------
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endmodule
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endmodule
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