techlibs/intel/cycloneiv/cells_map.v

/*
 *  yosys -- Yosys Open SYnthesis Suite
 *
 *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
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 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
// > c60k28 (Viacheslav, VT) [at] yandex [dot] com
// > Intel FPGA technology mapping. User must first simulate the generated \
// > netlist before going to test it on board.
// > Changelog: 1) The missing power_up parameter in the techmap introduces a problem in Quartus mapper. Fixed.

// Normal mode DFF negedge clk, negedge reset
module  \$_DFF_N_ (input D, C, output Q);
   parameter WYSIWYG="TRUE";
   parameter power_up=1'bx;
   dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(1'b1), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0));
endmodule
// Normal mode DFF
module  \$_DFF_P_ (input D, C, output Q);
   parameter WYSIWYG="TRUE";
   parameter power_up=1'bx;
   dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(1'b1), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0));
endmodule

// Async Active Low Reset DFF
module  \$_DFF_PN0_ (input D, C, R, output Q);
   parameter WYSIWYG="TRUE";
   parameter power_up=1'bx;
   dffeas #(.is_wysiwyg(WYSIWYG), .power_up("power_up")) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0));
endmodule
// Async Active High Reset DFF
module  \$_DFF_PP0_ (input D, C, R, output Q);
   parameter WYSIWYG="TRUE";
   parameter power_up=1'bx;
   wire R_i = ~ R;
   dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R_i), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0));
endmodule

module  \$__DFFE_PP0 (input D, C, E, R, output Q);
   parameter WYSIWYG="TRUE";
   parameter power_up=1'bx;
   wire E_i = ~ E;
   dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(E_i), .sload(1'b0));
endmodule

// Input buffer map
module \$__inpad (input I, output O);
    cycloneiv_io_ibuf _TECHMAP_REPLACE_ (.o(O), .i(I), .ibar(1'b0));
endmodule

// Output buffer map
module \$__outpad (input I, output O);
    cycloneiv_io_obuf _TECHMAP_REPLACE_ (.o(O), .i(I), .oe(1'b1));
endmodule

// LUT Map
/* 0 -> datac
   1 -> cin */
module \$lut (A, Y);
   parameter WIDTH  = 0;
   parameter LUT    = 0;
   input [WIDTH-1:0] A;
   output            Y;
   generate
      if (WIDTH == 1) begin
	   assign Y = ~A[0]; // Not need to spend 1 logic cell for such an easy function
      end else
      if (WIDTH == 2) begin
           cycloneiv_lcell_comb #(.lut_mask({4{LUT}}), .sum_lutc_input("datac")) _TECHMAP_REPLACE_ (.combout(Y), .dataa(A[0]), .datab(A[1]), .datac(1'b1),.datad(1'b1));
      end else
      if(WIDTH == 3) begin
	   cycloneiv_lcell_comb #(.lut_mask({2{LUT}}), .sum_lutc_input("datac")) _TECHMAP_REPLACE_ (.combout(Y), .dataa(A[0]), .datab(A[1]), .datac(A[2]),.datad(1'b1));
      end else
      if(WIDTH == 4) begin
	   cycloneiv_lcell_comb #(.lut_mask(LUT), .sum_lutc_input("datac")) _TECHMAP_REPLACE_ (.combout(Y), .dataa(A[0]), .datab(A[1]), .datac(A[2]),.datad(A[3]));
      end else
	   wire _TECHMAP_FAIL_ = 1;
   endgenerate
endmodule //