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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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//
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//
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//
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// ============================================================================
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// ============================================================================
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//
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//
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module DivGoldschmidt(rst, clk, ld, a, b, q, f0, done, lzcnt);
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module DivGoldschmidt(rst, clk, ld, a, b, q, done, lzcnt);
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parameter WID=32;
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parameter WID=32;
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parameter WHOLE=16;
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parameter WHOLE=16;
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parameter POINTS=16;
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parameter POINTS=16;
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parameter LEFT=1'b1;
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parameter LEFT=1'b1;
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localparam SIZE=WID+WHOLE;
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localparam SIZE=WID+WHOLE;
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input clk;
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input clk;
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input ld;
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input ld;
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input [WID-1:0] a;
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input [WID-1:0] a;
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input [WID-1:0] b;
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input [WID-1:0] b;
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output reg [WID*2-1:0] q;
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output reg [WID*2-1:0] q;
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output reg [SIZE-1:0] f0;
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output reg done;
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output reg done;
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output reg [7:0] lzcnt;
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output reg [7:0] lzcnt;
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parameter IDLE = 2'd0;
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parameter IDLE = 2'd0;
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parameter DIV = 2'd1;
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parameter DIV = 2'd1;
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parameter DONE = 2'd2;
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parameter DONE = 2'd2;
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if (shift_left) begin
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if (shift_left) begin
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if (LEFT) begin
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if (LEFT) begin
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N <= {16'd0,a,{WHOLE{1'b0}}} << shft;
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N <= {16'd0,a,{WHOLE{1'b0}}} << shft;
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D <= {16'd0,b,{WHOLE{1'd0}}} << shft;
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D <= {16'd0,b,{WHOLE{1'd0}}} << shft;
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} << shft);
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} << shft);
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f0 <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} << shft);
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end
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end
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else begin
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else begin
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N <= {16'd0,a,{WHOLE{1'b0}}};
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N <= {16'd0,a,{WHOLE{1'b0}}};
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D <= {16'd0,b,{WHOLE{1'd0}}};
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D <= {16'd0,b,{WHOLE{1'd0}}};
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}});
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}});
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f0 <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}});
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end
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end
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end
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end
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else begin
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else begin
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N <= {16'd0,a,{WHOLE{1'b0}}} >> shft;
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N <= {16'd0,a,{WHOLE{1'b0}}} >> shft;
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D <= {16'd0,b,{WHOLE{1'd0}}} >> shft;
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D <= {16'd0,b,{WHOLE{1'd0}}} >> shft;
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} >> shft);
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F <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} >> shft);
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f0 <= {16'd2,{POINTS2{1'b0}}} - ({b,{WHOLE{1'd0}}} >> shft);
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end
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end
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count <= 0;
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count <= 0;
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state <= DIV;
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state <= DIV;
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end
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end
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end
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end
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reg rst;
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reg rst;
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reg clk;
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reg clk;
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reg ld;
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reg ld;
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wire done;
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wire done;
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wire [WID*2-1:0] qo;
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wire [WID*2-1:0] qo;
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wire [7:0] f0;
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reg [3:0] state;
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reg [3:0] state;
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reg [3:0] a, b;
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reg [3:0] a, b;
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reg [7:0] count;
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reg [7:0] count;
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initial begin
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initial begin
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// .isDivi(1'b0),
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// .isDivi(1'b0),
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.a(a),
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.a(a),
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.b(b),
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.b(b),
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// .imm(64'd123),
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// .imm(64'd123),
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.q(qo),
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.q(qo),
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.f0(f0),
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// .ro(ro),
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// .ro(ro),
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// .dvByZr(),
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// .dvByZr(),
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.left_right(),
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.done(done),
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.shift(),
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.lzcnt()
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.done(done)
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);
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);
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endmodule
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endmodule
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No newline at end of file
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No newline at end of file
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