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+/*
+ * 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
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * 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
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+module VCC (output V);
+ assign V = 1'b1;
+endmodule // VCC
+
+module GND (output G);
+ assign G = 1'b0;
+endmodule // GND
+
+/* Altera Cyclone IV (GX) devices Input Buffer Primitive */
+module cycloneiv_io_ibuf
+ (output o, input i, input ibar);
+ assign ibar = ibar;
+ assign o = i;
+endmodule // fiftyfivenm_io_ibuf
+
+/* Altera Cyclone IV (GX) devices Output Buffer Primitive */
+module cycloneiv_io_obuf
+ (output o, input i, input oe);
+ assign o = i;
+ assign oe = oe;
+endmodule // fiftyfivenm_io_obuf
+
+/* Altera Cyclone IV (GX) 4-input non-fracturable LUT Primitive */
+module cycloneiv_lcell_comb
+ (output combout, cout,
+ input dataa, datab, datac, datad, cin);
+
+ /* Internal parameters which define the behaviour
+ of the LUT primitive.
+ lut_mask define the lut function, can be expressed in 16-digit bin or hex.
+ sum_lutc_input define the type of LUT (combinational | arithmetic).
+ dont_touch for retiming || carry options.
+ lpm_type for WYSIWYG */
+
+ parameter lut_mask = 16'hFFFF;
+ parameter dont_touch = "off";
+ parameter lpm_type = "cycloneiv_lcell_comb";
+ parameter sum_lutc_input = "datac";
+
+ reg [1:0] lut_type;
+ reg cout_rt;
+ reg combout_rt;
+ wire dataa_w;
+ wire datab_w;
+ wire datac_w;
+ wire datad_w;
+ wire cin_w;
+
+ assign dataa_w = dataa;
+ assign datab_w = datab;
+ assign datac_w = datac;
+ assign datad_w = datad;
+
+ function lut_data;
+ input [15:0] mask;
+ input dataa, datab, datac, datad;
+ reg [7:0] s3;
+ reg [3:0] s2;
+ reg [1:0] s1;
+ begin
+ s3 = datad ? mask[15:8] : mask[7:0];
+ s2 = datac ? s3[7:4] : s3[3:0];
+ s1 = datab ? s2[3:2] : s2[1:0];
+ lut_data = dataa ? s1[1] : s1[0];
+ end
+
+ endfunction
+
+ initial begin
+ if (sum_lutc_input == "datac") lut_type = 0;
+ else
+ if (sum_lutc_input == "cin") lut_type = 1;
+ else begin
+ $error("Error in sum_lutc_input. Parameter %s is not a valid value.\n", sum_lutc_input);
+ $finish();
+ end
+ end
+
+ always @(dataa_w or datab_w or datac_w or datad_w or cin_w) begin
+ if (lut_type == 0) begin // logic function
+ combout_rt = lut_data(lut_mask, dataa_w, datab_w,
+ datac_w, datad_w);
+ end
+ else if (lut_type == 1) begin // arithmetic function
+ combout_rt = lut_data(lut_mask, dataa_w, datab_w,
+ cin_w, datad_w);
+ end
+ cout_rt = lut_data(lut_mask, dataa_w, datab_w, cin_w, 'b0);
+ end
+
+ assign combout = combout_rt & 1'b1;
+ assign cout = cout_rt & 1'b1;
+
+endmodule // cycloneiv_lcell_comb
+
+/* Altera D Flip-Flop Primitive */
+module dffeas
+ (output q,
+ input d, clk, clrn, prn, ena,
+ input asdata, aload, sclr, sload);
+
+ // Timing simulation is not covered
+ parameter power_up="dontcare";
+ parameter is_wysiwyg="false";
+
+ reg q_tmp;
+ wire reset;
+ reg [7:0] debug_net;
+
+ assign reset = (prn && sclr && ~clrn && ena);
+ assign q = q_tmp & 1'b1;
+
+ always @(posedge clk, posedge aload) begin
+ if(reset) q_tmp <= 0;
+ else q_tmp <= d;
+ end
+ assign q = q_tmp;
+
+endmodule // dffeas
+
+/* Cyclone IV GX altpll clearbox model */
+(* blackbox *)
+module cycloneiv_pll
+ (inclk,
+ fbin,
+ fbout,
+ clkswitch,
+ areset,
+ pfdena,
+ scanclk,
+ scandata,
+ scanclkena,
+ configupdate,
+ clk,
+ phasecounterselect,
+ phaseupdown,
+ phasestep,
+ clkbad,
+ activeclock,
+ locked,
+ scandataout,
+ scandone,
+ phasedone,
+ vcooverrange,
+ vcounderrange,
+ fref,
+ icdrclk);
+
+ parameter operation_mode = "normal";
+ parameter pll_type = "auto";
+ parameter compensate_clock = "clock0";
+ parameter inclk0_input_frequency = 0;
+ parameter inclk1_input_frequency = 0;
+ parameter self_reset_on_loss_lock = "off";
+ parameter switch_over_type = "auto";
+ parameter switch_over_counter = 1;
+ parameter enable_switch_over_counter = "off";
+ parameter bandwidth = 0;
+ parameter bandwidth_type = "auto";
+ parameter use_dc_coupling = "false";
+ parameter lock_high = 0;
+ parameter lock_low = 0;
+ parameter lock_window_ui = "0.05";
+ parameter test_bypass_lock_detect = "off";
+ parameter clk0_output_frequency = 0;
+ parameter clk0_multiply_by = 0;
+ parameter clk0_divide_by = 0;
+ parameter clk0_phase_shift = "0";
+ parameter clk0_duty_cycle = 50;
+ parameter clk1_output_frequency = 0;
+ parameter clk1_multiply_by = 0;
+ parameter clk1_divide_by = 0;
+ parameter clk1_phase_shift = "0";
+ parameter clk1_duty_cycle = 50;
+ parameter clk2_output_frequency = 0;
+ parameter clk2_multiply_by = 0;
+ parameter clk2_divide_by = 0;
+ parameter clk2_phase_shift = "0";
+ parameter clk2_duty_cycle = 50;
+ parameter clk3_output_frequency = 0;
+ parameter clk3_multiply_by = 0;
+ parameter clk3_divide_by = 0;
+ parameter clk3_phase_shift = "0";
+ parameter clk3_duty_cycle = 50;
+ parameter clk4_output_frequency = 0;
+ parameter clk4_multiply_by = 0;
+ parameter clk4_divide_by = 0;
+ parameter clk4_phase_shift = "0";
+ parameter clk4_duty_cycle = 50;
+ parameter pfd_min = 0;
+ parameter pfd_max = 0;
+ parameter vco_min = 0;
+ parameter vco_max = 0;
+ parameter vco_center = 0;
+ // Advanced user parameters
+ parameter m_initial = 1;
+ parameter m = 0;
+ parameter n = 1;
+ parameter c0_high = 1;
+ parameter c0_low = 1;
+ parameter c0_initial = 1;
+ parameter c0_mode = "bypass";
+ parameter c0_ph = 0;
+ parameter c1_high = 1;
+ parameter c1_low = 1;
+ parameter c1_initial = 1;
+ parameter c1_mode = "bypass";
+ parameter c1_ph = 0;
+ parameter c2_high = 1;
+ parameter c2_low = 1;
+ parameter c2_initial = 1;
+ parameter c2_mode = "bypass";
+ parameter c2_ph = 0;
+ parameter c3_high = 1;
+ parameter c3_low = 1;
+ parameter c3_initial = 1;
+ parameter c3_mode = "bypass";
+ parameter c3_ph = 0;
+ parameter c4_high = 1;
+ parameter c4_low = 1;
+ parameter c4_initial = 1;
+ parameter c4_mode = "bypass";
+ parameter c4_ph = 0;
+ parameter m_ph = 0;
+ parameter clk0_counter = "unused";
+ parameter clk1_counter = "unused";
+ parameter clk2_counter = "unused";
+ parameter clk3_counter = "unused";
+ parameter clk4_counter = "unused";
+ parameter c1_use_casc_in = "off";
+ parameter c2_use_casc_in = "off";
+ parameter c3_use_casc_in = "off";
+ parameter c4_use_casc_in = "off";
+ parameter m_test_source = -1;
+ parameter c0_test_source = -1;
+ parameter c1_test_source = -1;
+ parameter c2_test_source = -1;
+ parameter c3_test_source = -1;
+ parameter c4_test_source = -1;
+ parameter vco_multiply_by = 0;
+ parameter vco_divide_by = 0;
+ parameter vco_post_scale = 1;
+ parameter vco_frequency_control = "auto";
+ parameter vco_phase_shift_step = 0;
+ parameter charge_pump_current = 10;
+ parameter loop_filter_r = "1.0";
+ parameter loop_filter_c = 0;
+ parameter pll_compensation_delay = 0;
+ parameter lpm_type = "cycloneiv_pll";
+ parameter phase_counter_select_width = 3;
+
+ input [1:0] inclk;
+ input fbin;
+ input clkswitch;
+ input areset;
+ input pfdena;
+ input [phase_counter_select_width - 1:0] phasecounterselect;
+ input phaseupdown;
+ input phasestep;
+ input scanclk;
+ input scanclkena;
+ input scandata;
+ input configupdate;
+
+ output [4:0] clk;
+ output [1:0] clkbad;
+ output activeclock;
+ output locked;
+ output scandataout;
+ output scandone;
+ output fbout;
+ output phasedone;
+ output vcooverrange;
+ output vcounderrange;
+ output fref;
+ output icdrclk;
+
+endmodule // cycloneive_pll
+
+
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