techlibs/xilinx/xc6s_ff_map.v

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
   5  *
   6  *  Permission to use, copy, modify, and/or distribute this software for any
   7  *  purpose with or without fee is hereby granted, provided that the above
   8  *  copyright notice and this permission notice appear in all copies.
   9  *
  10  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 // ============================================================================
  21 // FF mapping
  22
  23 `ifndef _NO_FFS
  24
  25 module  \$_DFF_N_   (input D, C, output Q);
  26   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  27   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  28     FDSE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .S(1'b0));
  29   else
  30     FDRE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .R(1'b0));
  31   endgenerate
  32 endmodule
  33 module  \$_DFF_P_   (input D, C, output Q);
  34   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  35   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  36     FDSE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .S(1'b0));
  37   else
  38     FDRE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .R(1'b0));
  39   endgenerate
  40 endmodule
  41
  42 module  \$_DFFE_NP_ (input D, C, E, output Q);
  43   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  44   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  45     FDSE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E),    .S(1'b0));
  46   else
  47     FDRE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E),    .R(1'b0));
  48   endgenerate
  49 endmodule
  50 module  \$_DFFE_PP_ (input D, C, E, output Q);
  51   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  52   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  53     FDSE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E),    .S(1'b0));
  54   else
  55     FDRE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E),    .R(1'b0));
  56   endgenerate
  57 endmodule
  58
  59 module  \$_DFF_NN0_ (input D, C, R, output Q);
  60   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  61   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  62     $error("Spartan 6 doesn't support FFs with asynchronous reset initialized to 1");
  63   else
  64     FDCE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR(!R));
  65   endgenerate
  66 endmodule
  67 module  \$_DFF_NP0_ (input D, C, R, output Q);
  68   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  69   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  70     $error("Spartan 6 doesn't support FFs with asynchronous reset initialized to 1");
  71   else
  72     FDCE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR( R));
  73   endgenerate
  74 endmodule
  75 module  \$_DFF_PN0_ (input D, C, R, output Q);
  76   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  77   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  78     $error("Spartan 6 doesn't support FFs with asynchronous reset initialized to 1");
  79   else
  80     FDCE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR(!R));
  81   endgenerate
  82 endmodule
  83 module  \$_DFF_PP0_ (input D, C, R, output Q);
  84   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  85   generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
  86     $error("Spartan 6 doesn't support FFs with asynchronous reset initialized to 1");
  87   else
  88     FDCE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR( R));
  89   endgenerate
  90 endmodule
  91
  92 module  \$_DFF_NN1_ (input D, C, R, output Q);
  93   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
  94   generate if (_TECHMAP_WIREINIT_Q_ === 1'b0)
  95     $error("Spartan 6 doesn't support FFs with asynchronous set initialized to 0");
  96   else
  97     FDPE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE(!R));
  98   endgenerate
  99 endmodule
 100 module  \$_DFF_NP1_ (input D, C, R, output Q);
 101   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
 102   generate if (_TECHMAP_WIREINIT_Q_ === 1'b0)
 103     $error("Spartan 6 doesn't support FFs with asynchronous set initialized to 0");
 104   else
 105     FDPE_1 #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE( R));
 106   endgenerate
 107 endmodule
 108 module  \$_DFF_PN1_ (input D, C, R, output Q);
 109   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
 110   generate if (_TECHMAP_WIREINIT_Q_ === 1'b0)
 111     $error("Spartan 6 doesn't support FFs with asynchronous set initialized to 0");
 112   else
 113     FDPE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE(!R));
 114   endgenerate
 115 endmodule
 116 module  \$_DFF_PP1_ (input D, C, R, output Q);
 117   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
 118   generate if (_TECHMAP_WIREINIT_Q_ === 1'b0)
 119     $error("Spartan 6 doesn't support FFs with asynchronous set initialized to 0");
 120   else
 121     FDPE   #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE( R));
 122   endgenerate
 123 endmodule
 124
 125 `endif
 126