mirror of https://github.com/YosysHQ/yosys.git
88 lines
4.2 KiB
Verilog
88 lines
4.2 KiB
Verilog
module \$_DFF_N_ (input D, C, output Q); SB_DFFN _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C)); endmodule
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module \$_DFF_P_ (input D, C, output Q); SB_DFF _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C)); endmodule
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module \$_DFFE_NN_ (input D, C, E, output Q); SB_DFFNE _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(!E)); endmodule
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module \$_DFFE_PN_ (input D, C, E, output Q); SB_DFFE _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(!E)); endmodule
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module \$_DFFE_NP_ (input D, C, E, output Q); SB_DFFNE _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E)); endmodule
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module \$_DFFE_PP_ (input D, C, E, output Q); SB_DFFE _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E)); endmodule
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module \$_DFF_NN0_ (input D, C, R, output Q); SB_DFFNR _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(!R)); endmodule
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module \$_DFF_NN1_ (input D, C, R, output Q); SB_DFFNS _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .S(!R)); endmodule
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module \$_DFF_PN0_ (input D, C, R, output Q); SB_DFFR _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(!R)); endmodule
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module \$_DFF_PN1_ (input D, C, R, output Q); SB_DFFS _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .S(!R)); endmodule
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module \$_DFF_NP0_ (input D, C, R, output Q); SB_DFFNR _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(R)); endmodule
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module \$_DFF_NP1_ (input D, C, R, output Q); SB_DFFNS _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .S(R)); endmodule
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module \$_DFF_PP0_ (input D, C, R, output Q); SB_DFFR _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(R)); endmodule
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module \$_DFF_PP1_ (input D, C, R, output Q); SB_DFFS _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .S(R)); endmodule
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module \$__DFFE_NN0 (input D, C, E, R, output Q); SB_DFFNER _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .R(!R)); endmodule
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module \$__DFFE_NN1 (input D, C, E, R, output Q); SB_DFFNES _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .S(!R)); endmodule
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module \$__DFFE_PN0 (input D, C, E, R, output Q); SB_DFFER _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .R(!R)); endmodule
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module \$__DFFE_PN1 (input D, C, E, R, output Q); SB_DFFES _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .S(!R)); endmodule
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module \$__DFFE_NP0 (input D, C, E, R, output Q); SB_DFFNER _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .R(R)); endmodule
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module \$__DFFE_NP1 (input D, C, E, R, output Q); SB_DFFNES _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .S(R)); endmodule
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module \$__DFFE_PP0 (input D, C, E, R, output Q); SB_DFFER _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .R(R)); endmodule
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module \$__DFFE_PP1 (input D, C, E, R, output Q); SB_DFFES _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .E(E), .S(R)); endmodule
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`ifndef NO_LUT
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module \$lut (A, Y);
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parameter WIDTH = 0;
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parameter LUT = 0;
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input [WIDTH-1:0] A;
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output Y;
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generate
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if (WIDTH == 1) begin
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localparam [15:0] INIT = {{8{LUT[1]}}, {8{LUT[0]}}};
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SB_LUT4 #(.LUT_INIT(INIT)) _TECHMAP_REPLACE_ (.O(Y),
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.I0(1'b0), .I1(1'b0), .I2(1'b0), .I3(A[0]));
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end else
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if (WIDTH == 2) begin
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localparam [15:0] INIT = {{4{LUT[3]}}, {4{LUT[1]}}, {4{LUT[2]}}, {4{LUT[0]}}};
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SB_LUT4 #(.LUT_INIT(INIT)) _TECHMAP_REPLACE_ (.O(Y),
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.I0(1'b0), .I1(1'b0), .I2(A[1]), .I3(A[0]));
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end else
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if (WIDTH == 3) begin
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localparam [15:0] INIT = {{2{LUT[7]}}, {2{LUT[3]}}, {2{LUT[5]}}, {2{LUT[1]}}, {2{LUT[6]}}, {2{LUT[2]}}, {2{LUT[4]}}, {2{LUT[0]}}};
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SB_LUT4 #(.LUT_INIT(INIT)) _TECHMAP_REPLACE_ (.O(Y),
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.I0(1'b0), .I1(A[2]), .I2(A[1]), .I3(A[0]));
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end else
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if (WIDTH == 4) begin
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localparam [15:0] INIT = {LUT[15], LUT[7], LUT[11], LUT[3], LUT[13], LUT[5], LUT[9], LUT[1], LUT[14], LUT[6], LUT[10], LUT[2], LUT[12], LUT[4], LUT[8], LUT[0]};
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SB_LUT4 #(.LUT_INIT(INIT)) _TECHMAP_REPLACE_ (.O(Y),
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.I0(A[3]), .I1(A[2]), .I2(A[1]), .I3(A[0]));
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end else begin
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wire _TECHMAP_FAIL_ = 1;
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end
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endgenerate
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endmodule
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`endif
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`ifdef _ABC
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module \$__ICE40_CARRY_LUT4 (output CO, O, input A, B, CI);
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SB_CARRY carry (
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.I0(A),
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.I1(B),
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.CI(CI),
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.CO(CO)
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);
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SB_LUT4 #(
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// I0: 1010 1010 1010 1010
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// I1: 1100 1100 1100 1100
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// I2: 1111 0000 1111 0000
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// I3: 1111 1111 0000 0000
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.LUT_INIT(16'b 0110_1001_1001_0110)
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) adder (
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.I0(1'b0),
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.I1(A),
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.I2(B),
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.I3(CI),
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.O(O)
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);
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endmodule
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`endif
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