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Rev 182 → Rev 183

/icarus_version/rtl/Module_FixedPointSquareRoot.v
113,11 → 113,39
32'hc20000: O = 32'h13b29d;
32'hc40000: O = 32'h13cc8a;
32'hc60000: O = 32'h13e655;
32'hc80000: O = 32'h140000;
32'hca0000: O = 32'h141989;
32'hcc0000: O = 32'h1432f2;
32'hce0000: O = 32'h144c3b;
32'hd00000: O = 32'h146565;
32'hd20000: O = 32'h147e70;
32'hd40000: O = 32'h14975c;
32'hd60000: O = 32'h14b02b;
32'hd80000: O = 32'h14c8dc;
32'hda0000: O = 32'h14e16f;
32'hdc0000: O = 32'h14f9e6;
32'hde0000: O = 32'h151241;
32'he00000: O = 32'h152a7f;
32'he20000: O = 32'h1542a2;
32'he40000: O = 32'h155aaa;
32'he60000: O = 32'h157296;
32'he80000: O = 32'h158a68;
32'hea0000: O = 32'h15a220;
32'hec0000: O = 32'h15b9be;
32'hee0000: O = 32'h15d142;
32'hf00000: O = 32'h15e8ad;
32'hf20000: O = 32'h160000;
32'hf40000: O = 32'h161739;
32'hf60000: O = 32'h162e5a;
32'hf80000: O = 32'h164564;
32'hfa0000: O = 32'h165c55;
32'hfc0000: O = 32'h16732f;
32'hfe0000: O = 32'h1689f2; //127 -> 1111111,00000000000000000
 
default:
begin
// $display("Shit, got %d",I << `SCALE);
O = 32'hfffffff;
//$display("Shit, got %d\n",I << `SCALE);
O = 32'h00caca;
end
endcase
134,7 → 162,7
output wire [`WIDTH-1:0] Result
);
 
FFD_POSEDGE_SYNCRONOUS_RESET # (1) FFwMultiplicationOutputReadyC_Dealy1
FFD_POSEDGE_SYNCRONOUS_RESET # (1) FFDelay1
(
.Clock( Clock ),
.Reset( Reset ),
143,13 → 171,32
.Q( OutputReady )
);
 
wire [`WIDTH-1:0] wResult;
//LUT only has values from 0 to 127, lets see if the value is bigger than that
wire wNotInLUT;
assign wNotInLUT = Operand[7+`SCALE]; //pero para ese chiste usar 128 en lugar de 4, entonces pueden haber hasta 128*128 = 16384 valores
//If the value is not on the LUT then divide by 4, so SQRT(x) = SQRT(4*x/4)
//=2*SQRT(x/4)
 
wire[`WIDTH-1:0] wScaledOperand;
 
assign wScaledOperand = (wNotInLUT == 1'b0 ) ?
{Operand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}} : //Aproximate the Square root to an integer value
{2'b0,Operand[`WIDTH-1:`SCALE+2],{`SCALE{1'b0}}}; //Shift right two bits (divide by 4)
 
wire [`WIDTH-1:0] wResult,wScaleResult;
SQUAREROOT_LUT SQRT
(
.I({Operand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}}), //Aproximate the Square root to an integer value
.O(wResult)
.I(wScaledOperand),
//.I({Operand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}}), //Aproximate the Square root to an integer value
.O(wScaleResult)
//.O(wResult)
);
 
 
 
assign wResult = (wNotInLUT == 1'b0 ) ? wScaleResult : {wScaleResult[`WIDTH-2:0],1'b0};
 
 
FFD_POSEDGE_SYNCRONOUS_RESET # (`WIDTH) FFRESULT
(
.Clock( Clock ),
158,5 → 205,53
.D( wResult ),
.Q( Result )
);
 
//--------------------------------------------------------------------------------
`ifdef BIGGER
 
FFD_POSEDGE_SYNCRONOUS_RESET # (1) FFDelay1
(
.Clock( Clock ),
.Reset( Reset ),
.Enable(1'b1 ),
.D( iInputReady ),
.Q( OutputReady )
);
 
//LUT only has values from 0 to 127, lets see if the value is bigger than that
wire wNotInLUT;
assign wNotInLUT = Operand[7+`SCALE];
//If the value is not on the LUT then divide by 4, so SQRT(x) = SQRT(64*x/64)
//=16*SQRT(x/64)
 
wire[`WIDTH-1:0] wScaledOperand;
 
assign wScaledOperand = (wNotInLUT == 1'b0 ) ?
{Operand[`WIDTH-1:`SCALE],{`SCALE{1'b0}}} : //Aproximate the Square root to an integer value
{6'b0,Operand[`WIDTH-1:`SCALE+6],{`SCALE{1'b0}}}; //Shift right two bits (divide by 4)
 
wire [`WIDTH-1:0] wResult,wScaleResult;
SQUAREROOT_LUT SQRT
(
.I(wScaledOperand),
.O(wScaleResult)
 
);
 
 
 
assign wResult = (wNotInLUT == 1'b0 ) ? wScaleResult : {wScaleResult[`WIDTH-3:0],1'b0};
 
 
FFD_POSEDGE_SYNCRONOUS_RESET # (`WIDTH) FFRESULT
(
.Clock( Clock ),
.Reset( Reset ),
.Enable(1'b1 ),
.D( wResult ),
.Q( Result )
);
 
`endif
//--------------------------------------------------------------------------------
endmodule
 
/icarus_version/rtl/Module_ROM.v
112,6 → 112,8
//This is the first code that gets executed after the machine is
//externally configured ie after the MST_I goes from 1 to zero.
//It sets initial values for some of the internal registers
 
 
 
0: I = { `ZERO ,`CREG_LAST_t ,`VOID ,`VOID };
//Set the last 't' to very positive value(500)

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