| // Copyright 2020-2022 F4PGA Authors | 
 | // | 
 | // Licensed under the Apache License, Version 2.0 (the "License"); | 
 | // you may not use this file except in compliance with the License. | 
 | // You may obtain a copy of the License at | 
 | // | 
 | //     http://www.apache.org/licenses/LICENSE-2.0 | 
 | // | 
 | // Unless required by applicable law or agreed to in writing, software | 
 | // distributed under the License is distributed on an "AS IS" BASIS, | 
 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
 | // See the License for the specific language governing permissions and | 
 | // limitations under the License. | 
 | // | 
 | // SPDX-License-Identifier: Apache-2.0 | 
 |  | 
 | `timescale 1ps/1ps | 
 |  | 
 | `default_nettype none | 
 |  | 
 | (* blackbox *) | 
 | module QL_DSP1 ( | 
 |     input wire [19:0] a, | 
 |     input wire [17:0] b, | 
 |     (* clkbuf_sink *) | 
 |     input wire clk0, | 
 |     (* clkbuf_sink *) | 
 |     input wire clk1, | 
 |     input wire [ 1:0] feedback0, | 
 |     input wire [ 1:0] feedback1, | 
 |     input wire        load_acc0, | 
 |     input wire        load_acc1, | 
 |     input wire        reset0, | 
 |     input wire        reset1, | 
 |     output reg [37:0] z | 
 | ); | 
 |     parameter MODE_BITS = 27'b00000000000000000000000000; | 
 | endmodule  /* QL_DSP1 */ | 
 |  | 
 |  | 
 |  | 
 | // ---------------------------------------- // | 
 | // ----- DSP cells simulation modules ----- // | 
 | // --------- Control bits in ports -------- // | 
 | // ---------------------------------------- // | 
 |  | 
 | module QL_DSP2 ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     output wire [37:0] z, | 
 |     output wire [17:0] dly_b, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       load_acc, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |  | 
 |     input  wire       f_mode, | 
 |     input  wire [2:0] output_select, | 
 |     input  wire       saturate_enable, | 
 |     input  wire [5:0] shift_right, | 
 |     input  wire       round, | 
 |     input  wire       subtract, | 
 |     input  wire       register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam NBITS_ACC = 64; | 
 |     localparam NBITS_A = 20; | 
 |     localparam NBITS_B = 18; | 
 |     localparam NBITS_Z = 38; | 
 |  | 
 |     wire [NBITS_Z-1:0] dsp_full_z; | 
 |     wire [(NBITS_Z/2)-1:0] dsp_frac0_z; | 
 |     wire [(NBITS_Z/2)-1:0] dsp_frac1_z; | 
 |  | 
 |     wire [NBITS_B-1:0] dsp_full_dly_b; | 
 |     wire [(NBITS_B/2)-1:0] dsp_frac0_dly_b; | 
 |     wire [(NBITS_B/2)-1:0] dsp_frac1_dly_b; | 
 |  | 
 |     assign z = f_mode ? {dsp_frac1_z, dsp_frac0_z} : dsp_full_z; | 
 |     assign dly_b = f_mode ? {dsp_frac1_dly_b, dsp_frac0_dly_b} : dsp_full_dly_b; | 
 |  | 
 |     // Output used when fmode == 1 | 
 |         dsp_t1_sim_cfg_ports #( | 
 |         .NBITS_A(NBITS_A/2), | 
 |             .NBITS_B(NBITS_B/2), | 
 |             .NBITS_ACC(NBITS_ACC/2), | 
 |             .NBITS_Z(NBITS_Z/2) | 
 |         ) dsp_frac0 ( | 
 |             .a_i(a[(NBITS_A/2)-1:0]), | 
 |             .b_i(b[(NBITS_B/2)-1:0]), | 
 |             .z_o(dsp_frac0_z), | 
 |             .dly_b_o(dsp_frac0_dly_b), | 
 |  | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .saturate_enable_i(saturate_enable), | 
 |             .output_select_i(output_select), | 
 |             .round_i(round), | 
 |             .shift_right_i(shift_right), | 
 |             .subtract_i(subtract), | 
 |             .register_inputs_i(register_inputs), | 
 |             .coef_0_i(COEFF_0[(NBITS_A/2)-1:0]), | 
 |             .coef_1_i(COEFF_1[(NBITS_A/2)-1:0]), | 
 |             .coef_2_i(COEFF_2[(NBITS_A/2)-1:0]), | 
 |             .coef_3_i(COEFF_3[(NBITS_A/2)-1:0]) | 
 |         ); | 
 |  | 
 |     // Output used when fmode == 1 | 
 |         dsp_t1_sim_cfg_ports #( | 
 |         .NBITS_A(NBITS_A/2), | 
 |             .NBITS_B(NBITS_B/2), | 
 |             .NBITS_ACC(NBITS_ACC/2), | 
 |             .NBITS_Z(NBITS_Z/2) | 
 |         ) dsp_frac1 ( | 
 |             .a_i(a[NBITS_A-1:NBITS_A/2]), | 
 |             .b_i(b[NBITS_B-1:NBITS_B/2]), | 
 |             .z_o(dsp_frac1_z), | 
 |             .dly_b_o(dsp_frac1_dly_b), | 
 |  | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .saturate_enable_i(saturate_enable), | 
 |             .output_select_i(output_select), | 
 |             .round_i(round), | 
 |             .shift_right_i(shift_right), | 
 |             .subtract_i(subtract), | 
 |             .register_inputs_i(register_inputs), | 
 |             .coef_0_i(COEFF_0[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_1_i(COEFF_1[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_2_i(COEFF_2[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_3_i(COEFF_3[NBITS_A-1:NBITS_A/2]) | 
 |         ); | 
 |  | 
 |     // Output used when fmode == 0 | 
 |         dsp_t1_sim_cfg_ports #( | 
 |             .NBITS_A(NBITS_A), | 
 |             .NBITS_B(NBITS_B), | 
 |             .NBITS_ACC(NBITS_ACC), | 
 |             .NBITS_Z(NBITS_Z) | 
 |         ) dsp_full ( | 
 |             .a_i(a), | 
 |             .b_i(b), | 
 |             .z_o(dsp_full_z), | 
 |             .dly_b_o(dsp_full_dly_b), | 
 |  | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .saturate_enable_i(saturate_enable), | 
 |             .output_select_i(output_select), | 
 |             .round_i(round), | 
 |             .shift_right_i(shift_right), | 
 |             .subtract_i(subtract), | 
 |             .register_inputs_i(register_inputs), | 
 |             .coef_0_i(COEFF_0), | 
 |             .coef_1_i(COEFF_1), | 
 |             .coef_2_i(COEFF_2), | 
 |             .coef_3_i(COEFF_3) | 
 |         ); | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |  | 
 |     input  wire       f_mode, | 
 |     input  wire [2:0] output_select, | 
 |     input  wire       register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .clk(1'b0), | 
 |         .reset(reset), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(1'b0), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: a * b (0) | 
 |         .saturate_enable(1'b0), | 
 |         .shift_right(6'b0), | 
 |         .round(1'b0), | 
 |         .subtract(1'b0), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 | 	 | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 |         (a[0] => z[0]) = 0; | 
 |         (a[1] => z[0]) = 0; | 
 |         (a[2] => z[0]) = 0; | 
 |         (a[3] => z[0]) = 0; | 
 |         (a[4] => z[0]) = 0; | 
 |         (a[5] => z[0]) = 0; | 
 |         (a[6] => z[0]) = 0; | 
 |         (a[7] => z[0]) = 0; | 
 |         (a[8] => z[0]) = 0; | 
 |         (a[9] => z[0]) = 0; | 
 |         (a[10] => z[0]) = 0; | 
 |         (a[11] => z[0]) = 0; | 
 |         (a[12] => z[0]) = 0; | 
 |         (a[13] => z[0]) = 0; | 
 |         (a[14] => z[0]) = 0; | 
 |         (a[15] => z[0]) = 0; | 
 |         (a[16] => z[0]) = 0; | 
 |         (a[17] => z[0]) = 0; | 
 |         (a[18] => z[0]) = 0; | 
 |         (a[19] => z[0]) = 0; | 
 |         (b[0] => z[0]) = 0; | 
 |         (b[1] => z[0]) = 0; | 
 |         (b[2] => z[0]) = 0; | 
 |         (b[3] => z[0]) = 0; | 
 |         (b[4] => z[0]) = 0; | 
 |         (b[5] => z[0]) = 0; | 
 |         (b[6] => z[0]) = 0; | 
 |         (b[7] => z[0]) = 0; | 
 |         (b[8] => z[0]) = 0; | 
 |         (b[9] => z[0]) = 0; | 
 |         (b[10] => z[0]) = 0; | 
 |         (b[11] => z[0]) = 0; | 
 |         (b[12] => z[0]) = 0; | 
 |         (b[13] => z[0]) = 0; | 
 |         (b[14] => z[0]) = 0; | 
 |         (b[15] => z[0]) = 0; | 
 |         (b[16] => z[0]) = 0; | 
 |         (b[17] => z[0]) = 0; | 
 |         (a[0] => z[1]) = 0; | 
 |         (a[1] => z[1]) = 0; | 
 |         (a[2] => z[1]) = 0; | 
 |         (a[3] => z[1]) = 0; | 
 |         (a[4] => z[1]) = 0; | 
 |         (a[5] => z[1]) = 0; | 
 |         (a[6] => z[1]) = 0; | 
 |         (a[7] => z[1]) = 0; | 
 |         (a[8] => z[1]) = 0; | 
 |         (a[9] => z[1]) = 0; | 
 |         (a[10] => z[1]) = 0; | 
 |         (a[11] => z[1]) = 0; | 
 |         (a[12] => z[1]) = 0; | 
 |         (a[13] => z[1]) = 0; | 
 |         (a[14] => z[1]) = 0; | 
 |         (a[15] => z[1]) = 0; | 
 |         (a[16] => z[1]) = 0; | 
 |         (a[17] => z[1]) = 0; | 
 |         (a[18] => z[1]) = 0; | 
 |         (a[19] => z[1]) = 0; | 
 |         (b[0] => z[1]) = 0; | 
 |         (b[1] => z[1]) = 0; | 
 |         (b[2] => z[1]) = 0; | 
 |         (b[3] => z[1]) = 0; | 
 |         (b[4] => z[1]) = 0; | 
 |         (b[5] => z[1]) = 0; | 
 |         (b[6] => z[1]) = 0; | 
 |         (b[7] => z[1]) = 0; | 
 |         (b[8] => z[1]) = 0; | 
 |         (b[9] => z[1]) = 0; | 
 |         (b[10] => z[1]) = 0; | 
 |         (b[11] => z[1]) = 0; | 
 |         (b[12] => z[1]) = 0; | 
 |         (b[13] => z[1]) = 0; | 
 |         (b[14] => z[1]) = 0; | 
 |         (b[15] => z[1]) = 0; | 
 |         (b[16] => z[1]) = 0; | 
 |         (b[17] => z[1]) = 0; | 
 |         (a[0] => z[2]) = 0; | 
 |         (a[1] => z[2]) = 0; | 
 |         (a[2] => z[2]) = 0; | 
 |         (a[3] => z[2]) = 0; | 
 |         (a[4] => z[2]) = 0; | 
 |         (a[5] => z[2]) = 0; | 
 |         (a[6] => z[2]) = 0; | 
 |         (a[7] => z[2]) = 0; | 
 |         (a[8] => z[2]) = 0; | 
 |         (a[9] => z[2]) = 0; | 
 |         (a[10] => z[2]) = 0; | 
 |         (a[11] => z[2]) = 0; | 
 |         (a[12] => z[2]) = 0; | 
 |         (a[13] => z[2]) = 0; | 
 |         (a[14] => z[2]) = 0; | 
 |         (a[15] => z[2]) = 0; | 
 |         (a[16] => z[2]) = 0; | 
 |         (a[17] => z[2]) = 0; | 
 |         (a[18] => z[2]) = 0; | 
 |         (a[19] => z[2]) = 0; | 
 |         (b[0] => z[2]) = 0; | 
 |         (b[1] => z[2]) = 0; | 
 |         (b[2] => z[2]) = 0; | 
 |         (b[3] => z[2]) = 0; | 
 |         (b[4] => z[2]) = 0; | 
 |         (b[5] => z[2]) = 0; | 
 |         (b[6] => z[2]) = 0; | 
 |         (b[7] => z[2]) = 0; | 
 |         (b[8] => z[2]) = 0; | 
 |         (b[9] => z[2]) = 0; | 
 |         (b[10] => z[2]) = 0; | 
 |         (b[11] => z[2]) = 0; | 
 |         (b[12] => z[2]) = 0; | 
 |         (b[13] => z[2]) = 0; | 
 |         (b[14] => z[2]) = 0; | 
 |         (b[15] => z[2]) = 0; | 
 |         (b[16] => z[2]) = 0; | 
 |         (b[17] => z[2]) = 0; | 
 |         (a[0] => z[3]) = 0; | 
 |         (a[1] => z[3]) = 0; | 
 |         (a[2] => z[3]) = 0; | 
 |         (a[3] => z[3]) = 0; | 
 |         (a[4] => z[3]) = 0; | 
 |         (a[5] => z[3]) = 0; | 
 |         (a[6] => z[3]) = 0; | 
 |         (a[7] => z[3]) = 0; | 
 |         (a[8] => z[3]) = 0; | 
 |         (a[9] => z[3]) = 0; | 
 |         (a[10] => z[3]) = 0; | 
 |         (a[11] => z[3]) = 0; | 
 |         (a[12] => z[3]) = 0; | 
 |         (a[13] => z[3]) = 0; | 
 |         (a[14] => z[3]) = 0; | 
 |         (a[15] => z[3]) = 0; | 
 |         (a[16] => z[3]) = 0; | 
 |         (a[17] => z[3]) = 0; | 
 |         (a[18] => z[3]) = 0; | 
 |         (a[19] => z[3]) = 0; | 
 |         (b[0] => z[3]) = 0; | 
 |         (b[1] => z[3]) = 0; | 
 |         (b[2] => z[3]) = 0; | 
 |         (b[3] => z[3]) = 0; | 
 |         (b[4] => z[3]) = 0; | 
 |         (b[5] => z[3]) = 0; | 
 |         (b[6] => z[3]) = 0; | 
 |         (b[7] => z[3]) = 0; | 
 |         (b[8] => z[3]) = 0; | 
 |         (b[9] => z[3]) = 0; | 
 |         (b[10] => z[3]) = 0; | 
 |         (b[11] => z[3]) = 0; | 
 |         (b[12] => z[3]) = 0; | 
 |         (b[13] => z[3]) = 0; | 
 |         (b[14] => z[3]) = 0; | 
 |         (b[15] => z[3]) = 0; | 
 |         (b[16] => z[3]) = 0; | 
 |         (b[17] => z[3]) = 0; | 
 |         (a[0] => z[4]) = 0; | 
 |         (a[1] => z[4]) = 0; | 
 |         (a[2] => z[4]) = 0; | 
 |         (a[3] => z[4]) = 0; | 
 |         (a[4] => z[4]) = 0; | 
 |         (a[5] => z[4]) = 0; | 
 |         (a[6] => z[4]) = 0; | 
 |         (a[7] => z[4]) = 0; | 
 |         (a[8] => z[4]) = 0; | 
 |         (a[9] => z[4]) = 0; | 
 |         (a[10] => z[4]) = 0; | 
 |         (a[11] => z[4]) = 0; | 
 |         (a[12] => z[4]) = 0; | 
 |         (a[13] => z[4]) = 0; | 
 |         (a[14] => z[4]) = 0; | 
 |         (a[15] => z[4]) = 0; | 
 |         (a[16] => z[4]) = 0; | 
 |         (a[17] => z[4]) = 0; | 
 |         (a[18] => z[4]) = 0; | 
 |         (a[19] => z[4]) = 0; | 
 |         (b[0] => z[4]) = 0; | 
 |         (b[1] => z[4]) = 0; | 
 |         (b[2] => z[4]) = 0; | 
 |         (b[3] => z[4]) = 0; | 
 |         (b[4] => z[4]) = 0; | 
 |         (b[5] => z[4]) = 0; | 
 |         (b[6] => z[4]) = 0; | 
 |         (b[7] => z[4]) = 0; | 
 |         (b[8] => z[4]) = 0; | 
 |         (b[9] => z[4]) = 0; | 
 |         (b[10] => z[4]) = 0; | 
 |         (b[11] => z[4]) = 0; | 
 |         (b[12] => z[4]) = 0; | 
 |         (b[13] => z[4]) = 0; | 
 |         (b[14] => z[4]) = 0; | 
 |         (b[15] => z[4]) = 0; | 
 |         (b[16] => z[4]) = 0; | 
 |         (b[17] => z[4]) = 0; | 
 |         (a[0] => z[5]) = 0; | 
 |         (a[1] => z[5]) = 0; | 
 |         (a[2] => z[5]) = 0; | 
 |         (a[3] => z[5]) = 0; | 
 |         (a[4] => z[5]) = 0; | 
 |         (a[5] => z[5]) = 0; | 
 |         (a[6] => z[5]) = 0; | 
 |         (a[7] => z[5]) = 0; | 
 |         (a[8] => z[5]) = 0; | 
 |         (a[9] => z[5]) = 0; | 
 |         (a[10] => z[5]) = 0; | 
 |         (a[11] => z[5]) = 0; | 
 |         (a[12] => z[5]) = 0; | 
 |         (a[13] => z[5]) = 0; | 
 |         (a[14] => z[5]) = 0; | 
 |         (a[15] => z[5]) = 0; | 
 |         (a[16] => z[5]) = 0; | 
 |         (a[17] => z[5]) = 0; | 
 |         (a[18] => z[5]) = 0; | 
 |         (a[19] => z[5]) = 0; | 
 |         (b[0] => z[5]) = 0; | 
 |         (b[1] => z[5]) = 0; | 
 |         (b[2] => z[5]) = 0; | 
 |         (b[3] => z[5]) = 0; | 
 |         (b[4] => z[5]) = 0; | 
 |         (b[5] => z[5]) = 0; | 
 |         (b[6] => z[5]) = 0; | 
 |         (b[7] => z[5]) = 0; | 
 |         (b[8] => z[5]) = 0; | 
 |         (b[9] => z[5]) = 0; | 
 |         (b[10] => z[5]) = 0; | 
 |         (b[11] => z[5]) = 0; | 
 |         (b[12] => z[5]) = 0; | 
 |         (b[13] => z[5]) = 0; | 
 |         (b[14] => z[5]) = 0; | 
 |         (b[15] => z[5]) = 0; | 
 |         (b[16] => z[5]) = 0; | 
 |         (b[17] => z[5]) = 0; | 
 |         (a[0] => z[6]) = 0; | 
 |         (a[1] => z[6]) = 0; | 
 |         (a[2] => z[6]) = 0; | 
 |         (a[3] => z[6]) = 0; | 
 |         (a[4] => z[6]) = 0; | 
 |         (a[5] => z[6]) = 0; | 
 |         (a[6] => z[6]) = 0; | 
 |         (a[7] => z[6]) = 0; | 
 |         (a[8] => z[6]) = 0; | 
 |         (a[9] => z[6]) = 0; | 
 |         (a[10] => z[6]) = 0; | 
 |         (a[11] => z[6]) = 0; | 
 |         (a[12] => z[6]) = 0; | 
 |         (a[13] => z[6]) = 0; | 
 |         (a[14] => z[6]) = 0; | 
 |         (a[15] => z[6]) = 0; | 
 |         (a[16] => z[6]) = 0; | 
 |         (a[17] => z[6]) = 0; | 
 |         (a[18] => z[6]) = 0; | 
 |         (a[19] => z[6]) = 0; | 
 |         (b[0] => z[6]) = 0; | 
 |         (b[1] => z[6]) = 0; | 
 |         (b[2] => z[6]) = 0; | 
 |         (b[3] => z[6]) = 0; | 
 |         (b[4] => z[6]) = 0; | 
 |         (b[5] => z[6]) = 0; | 
 |         (b[6] => z[6]) = 0; | 
 |         (b[7] => z[6]) = 0; | 
 |         (b[8] => z[6]) = 0; | 
 |         (b[9] => z[6]) = 0; | 
 |         (b[10] => z[6]) = 0; | 
 |         (b[11] => z[6]) = 0; | 
 |         (b[12] => z[6]) = 0; | 
 |         (b[13] => z[6]) = 0; | 
 |         (b[14] => z[6]) = 0; | 
 |         (b[15] => z[6]) = 0; | 
 |         (b[16] => z[6]) = 0; | 
 |         (b[17] => z[6]) = 0; | 
 |         (a[0] => z[7]) = 0; | 
 |         (a[1] => z[7]) = 0; | 
 |         (a[2] => z[7]) = 0; | 
 |         (a[3] => z[7]) = 0; | 
 |         (a[4] => z[7]) = 0; | 
 |         (a[5] => z[7]) = 0; | 
 |         (a[6] => z[7]) = 0; | 
 |         (a[7] => z[7]) = 0; | 
 |         (a[8] => z[7]) = 0; | 
 |         (a[9] => z[7]) = 0; | 
 |         (a[10] => z[7]) = 0; | 
 |         (a[11] => z[7]) = 0; | 
 |         (a[12] => z[7]) = 0; | 
 |         (a[13] => z[7]) = 0; | 
 |         (a[14] => z[7]) = 0; | 
 |         (a[15] => z[7]) = 0; | 
 |         (a[16] => z[7]) = 0; | 
 |         (a[17] => z[7]) = 0; | 
 |         (a[18] => z[7]) = 0; | 
 |         (a[19] => z[7]) = 0; | 
 |         (b[0] => z[7]) = 0; | 
 |         (b[1] => z[7]) = 0; | 
 |         (b[2] => z[7]) = 0; | 
 |         (b[3] => z[7]) = 0; | 
 |         (b[4] => z[7]) = 0; | 
 |         (b[5] => z[7]) = 0; | 
 |         (b[6] => z[7]) = 0; | 
 |         (b[7] => z[7]) = 0; | 
 |         (b[8] => z[7]) = 0; | 
 |         (b[9] => z[7]) = 0; | 
 |         (b[10] => z[7]) = 0; | 
 |         (b[11] => z[7]) = 0; | 
 |         (b[12] => z[7]) = 0; | 
 |         (b[13] => z[7]) = 0; | 
 |         (b[14] => z[7]) = 0; | 
 |         (b[15] => z[7]) = 0; | 
 |         (b[16] => z[7]) = 0; | 
 |         (b[17] => z[7]) = 0; | 
 |         (a[0] => z[8]) = 0; | 
 |         (a[1] => z[8]) = 0; | 
 |         (a[2] => z[8]) = 0; | 
 |         (a[3] => z[8]) = 0; | 
 |         (a[4] => z[8]) = 0; | 
 |         (a[5] => z[8]) = 0; | 
 |         (a[6] => z[8]) = 0; | 
 |         (a[7] => z[8]) = 0; | 
 |         (a[8] => z[8]) = 0; | 
 |         (a[9] => z[8]) = 0; | 
 |         (a[10] => z[8]) = 0; | 
 |         (a[11] => z[8]) = 0; | 
 |         (a[12] => z[8]) = 0; | 
 |         (a[13] => z[8]) = 0; | 
 |         (a[14] => z[8]) = 0; | 
 |         (a[15] => z[8]) = 0; | 
 |         (a[16] => z[8]) = 0; | 
 |         (a[17] => z[8]) = 0; | 
 |         (a[18] => z[8]) = 0; | 
 |         (a[19] => z[8]) = 0; | 
 |         (b[0] => z[8]) = 0; | 
 |         (b[1] => z[8]) = 0; | 
 |         (b[2] => z[8]) = 0; | 
 |         (b[3] => z[8]) = 0; | 
 |         (b[4] => z[8]) = 0; | 
 |         (b[5] => z[8]) = 0; | 
 |         (b[6] => z[8]) = 0; | 
 |         (b[7] => z[8]) = 0; | 
 |         (b[8] => z[8]) = 0; | 
 |         (b[9] => z[8]) = 0; | 
 |         (b[10] => z[8]) = 0; | 
 |         (b[11] => z[8]) = 0; | 
 |         (b[12] => z[8]) = 0; | 
 |         (b[13] => z[8]) = 0; | 
 |         (b[14] => z[8]) = 0; | 
 |         (b[15] => z[8]) = 0; | 
 |         (b[16] => z[8]) = 0; | 
 |         (b[17] => z[8]) = 0; | 
 |         (a[0] => z[9]) = 0; | 
 |         (a[1] => z[9]) = 0; | 
 |         (a[2] => z[9]) = 0; | 
 |         (a[3] => z[9]) = 0; | 
 |         (a[4] => z[9]) = 0; | 
 |         (a[5] => z[9]) = 0; | 
 |         (a[6] => z[9]) = 0; | 
 |         (a[7] => z[9]) = 0; | 
 |         (a[8] => z[9]) = 0; | 
 |         (a[9] => z[9]) = 0; | 
 |         (a[10] => z[9]) = 0; | 
 |         (a[11] => z[9]) = 0; | 
 |         (a[12] => z[9]) = 0; | 
 |         (a[13] => z[9]) = 0; | 
 |         (a[14] => z[9]) = 0; | 
 |         (a[15] => z[9]) = 0; | 
 |         (a[16] => z[9]) = 0; | 
 |         (a[17] => z[9]) = 0; | 
 |         (a[18] => z[9]) = 0; | 
 |         (a[19] => z[9]) = 0; | 
 |         (b[0] => z[9]) = 0; | 
 |         (b[1] => z[9]) = 0; | 
 |         (b[2] => z[9]) = 0; | 
 |         (b[3] => z[9]) = 0; | 
 |         (b[4] => z[9]) = 0; | 
 |         (b[5] => z[9]) = 0; | 
 |         (b[6] => z[9]) = 0; | 
 |         (b[7] => z[9]) = 0; | 
 |         (b[8] => z[9]) = 0; | 
 |         (b[9] => z[9]) = 0; | 
 |         (b[10] => z[9]) = 0; | 
 |         (b[11] => z[9]) = 0; | 
 |         (b[12] => z[9]) = 0; | 
 |         (b[13] => z[9]) = 0; | 
 |         (b[14] => z[9]) = 0; | 
 |         (b[15] => z[9]) = 0; | 
 |         (b[16] => z[9]) = 0; | 
 |         (b[17] => z[9]) = 0; | 
 |         (a[0] => z[10]) = 0; | 
 |         (a[1] => z[10]) = 0; | 
 |         (a[2] => z[10]) = 0; | 
 |         (a[3] => z[10]) = 0; | 
 |         (a[4] => z[10]) = 0; | 
 |         (a[5] => z[10]) = 0; | 
 |         (a[6] => z[10]) = 0; | 
 |         (a[7] => z[10]) = 0; | 
 |         (a[8] => z[10]) = 0; | 
 |         (a[9] => z[10]) = 0; | 
 |         (a[10] => z[10]) = 0; | 
 |         (a[11] => z[10]) = 0; | 
 |         (a[12] => z[10]) = 0; | 
 |         (a[13] => z[10]) = 0; | 
 |         (a[14] => z[10]) = 0; | 
 |         (a[15] => z[10]) = 0; | 
 |         (a[16] => z[10]) = 0; | 
 |         (a[17] => z[10]) = 0; | 
 |         (a[18] => z[10]) = 0; | 
 |         (a[19] => z[10]) = 0; | 
 |         (b[0] => z[10]) = 0; | 
 |         (b[1] => z[10]) = 0; | 
 |         (b[2] => z[10]) = 0; | 
 |         (b[3] => z[10]) = 0; | 
 |         (b[4] => z[10]) = 0; | 
 |         (b[5] => z[10]) = 0; | 
 |         (b[6] => z[10]) = 0; | 
 |         (b[7] => z[10]) = 0; | 
 |         (b[8] => z[10]) = 0; | 
 |         (b[9] => z[10]) = 0; | 
 |         (b[10] => z[10]) = 0; | 
 |         (b[11] => z[10]) = 0; | 
 |         (b[12] => z[10]) = 0; | 
 |         (b[13] => z[10]) = 0; | 
 |         (b[14] => z[10]) = 0; | 
 |         (b[15] => z[10]) = 0; | 
 |         (b[16] => z[10]) = 0; | 
 |         (b[17] => z[10]) = 0; | 
 |         (a[0] => z[11]) = 0; | 
 |         (a[1] => z[11]) = 0; | 
 |         (a[2] => z[11]) = 0; | 
 |         (a[3] => z[11]) = 0; | 
 |         (a[4] => z[11]) = 0; | 
 |         (a[5] => z[11]) = 0; | 
 |         (a[6] => z[11]) = 0; | 
 |         (a[7] => z[11]) = 0; | 
 |         (a[8] => z[11]) = 0; | 
 |         (a[9] => z[11]) = 0; | 
 |         (a[10] => z[11]) = 0; | 
 |         (a[11] => z[11]) = 0; | 
 |         (a[12] => z[11]) = 0; | 
 |         (a[13] => z[11]) = 0; | 
 |         (a[14] => z[11]) = 0; | 
 |         (a[15] => z[11]) = 0; | 
 |         (a[16] => z[11]) = 0; | 
 |         (a[17] => z[11]) = 0; | 
 |         (a[18] => z[11]) = 0; | 
 |         (a[19] => z[11]) = 0; | 
 |         (b[0] => z[11]) = 0; | 
 |         (b[1] => z[11]) = 0; | 
 |         (b[2] => z[11]) = 0; | 
 |         (b[3] => z[11]) = 0; | 
 |         (b[4] => z[11]) = 0; | 
 |         (b[5] => z[11]) = 0; | 
 |         (b[6] => z[11]) = 0; | 
 |         (b[7] => z[11]) = 0; | 
 |         (b[8] => z[11]) = 0; | 
 |         (b[9] => z[11]) = 0; | 
 |         (b[10] => z[11]) = 0; | 
 |         (b[11] => z[11]) = 0; | 
 |         (b[12] => z[11]) = 0; | 
 |         (b[13] => z[11]) = 0; | 
 |         (b[14] => z[11]) = 0; | 
 |         (b[15] => z[11]) = 0; | 
 |         (b[16] => z[11]) = 0; | 
 |         (b[17] => z[11]) = 0; | 
 |         (a[0] => z[12]) = 0; | 
 |         (a[1] => z[12]) = 0; | 
 |         (a[2] => z[12]) = 0; | 
 |         (a[3] => z[12]) = 0; | 
 |         (a[4] => z[12]) = 0; | 
 |         (a[5] => z[12]) = 0; | 
 |         (a[6] => z[12]) = 0; | 
 |         (a[7] => z[12]) = 0; | 
 |         (a[8] => z[12]) = 0; | 
 |         (a[9] => z[12]) = 0; | 
 |         (a[10] => z[12]) = 0; | 
 |         (a[11] => z[12]) = 0; | 
 |         (a[12] => z[12]) = 0; | 
 |         (a[13] => z[12]) = 0; | 
 |         (a[14] => z[12]) = 0; | 
 |         (a[15] => z[12]) = 0; | 
 |         (a[16] => z[12]) = 0; | 
 |         (a[17] => z[12]) = 0; | 
 |         (a[18] => z[12]) = 0; | 
 |         (a[19] => z[12]) = 0; | 
 |         (b[0] => z[12]) = 0; | 
 |         (b[1] => z[12]) = 0; | 
 |         (b[2] => z[12]) = 0; | 
 |         (b[3] => z[12]) = 0; | 
 |         (b[4] => z[12]) = 0; | 
 |         (b[5] => z[12]) = 0; | 
 |         (b[6] => z[12]) = 0; | 
 |         (b[7] => z[12]) = 0; | 
 |         (b[8] => z[12]) = 0; | 
 |         (b[9] => z[12]) = 0; | 
 |         (b[10] => z[12]) = 0; | 
 |         (b[11] => z[12]) = 0; | 
 |         (b[12] => z[12]) = 0; | 
 |         (b[13] => z[12]) = 0; | 
 |         (b[14] => z[12]) = 0; | 
 |         (b[15] => z[12]) = 0; | 
 |         (b[16] => z[12]) = 0; | 
 |         (b[17] => z[12]) = 0; | 
 |         (a[0] => z[13]) = 0; | 
 |         (a[1] => z[13]) = 0; | 
 |         (a[2] => z[13]) = 0; | 
 |         (a[3] => z[13]) = 0; | 
 |         (a[4] => z[13]) = 0; | 
 |         (a[5] => z[13]) = 0; | 
 |         (a[6] => z[13]) = 0; | 
 |         (a[7] => z[13]) = 0; | 
 |         (a[8] => z[13]) = 0; | 
 |         (a[9] => z[13]) = 0; | 
 |         (a[10] => z[13]) = 0; | 
 |         (a[11] => z[13]) = 0; | 
 |         (a[12] => z[13]) = 0; | 
 |         (a[13] => z[13]) = 0; | 
 |         (a[14] => z[13]) = 0; | 
 |         (a[15] => z[13]) = 0; | 
 |         (a[16] => z[13]) = 0; | 
 |         (a[17] => z[13]) = 0; | 
 |         (a[18] => z[13]) = 0; | 
 |         (a[19] => z[13]) = 0; | 
 |         (b[0] => z[13]) = 0; | 
 |         (b[1] => z[13]) = 0; | 
 |         (b[2] => z[13]) = 0; | 
 |         (b[3] => z[13]) = 0; | 
 |         (b[4] => z[13]) = 0; | 
 |         (b[5] => z[13]) = 0; | 
 |         (b[6] => z[13]) = 0; | 
 |         (b[7] => z[13]) = 0; | 
 |         (b[8] => z[13]) = 0; | 
 |         (b[9] => z[13]) = 0; | 
 |         (b[10] => z[13]) = 0; | 
 |         (b[11] => z[13]) = 0; | 
 |         (b[12] => z[13]) = 0; | 
 |         (b[13] => z[13]) = 0; | 
 |         (b[14] => z[13]) = 0; | 
 |         (b[15] => z[13]) = 0; | 
 |         (b[16] => z[13]) = 0; | 
 |         (b[17] => z[13]) = 0; | 
 |         (a[0] => z[14]) = 0; | 
 |         (a[1] => z[14]) = 0; | 
 |         (a[2] => z[14]) = 0; | 
 |         (a[3] => z[14]) = 0; | 
 |         (a[4] => z[14]) = 0; | 
 |         (a[5] => z[14]) = 0; | 
 |         (a[6] => z[14]) = 0; | 
 |         (a[7] => z[14]) = 0; | 
 |         (a[8] => z[14]) = 0; | 
 |         (a[9] => z[14]) = 0; | 
 |         (a[10] => z[14]) = 0; | 
 |         (a[11] => z[14]) = 0; | 
 |         (a[12] => z[14]) = 0; | 
 |         (a[13] => z[14]) = 0; | 
 |         (a[14] => z[14]) = 0; | 
 |         (a[15] => z[14]) = 0; | 
 |         (a[16] => z[14]) = 0; | 
 |         (a[17] => z[14]) = 0; | 
 |         (a[18] => z[14]) = 0; | 
 |         (a[19] => z[14]) = 0; | 
 |         (b[0] => z[14]) = 0; | 
 |         (b[1] => z[14]) = 0; | 
 |         (b[2] => z[14]) = 0; | 
 |         (b[3] => z[14]) = 0; | 
 |         (b[4] => z[14]) = 0; | 
 |         (b[5] => z[14]) = 0; | 
 |         (b[6] => z[14]) = 0; | 
 |         (b[7] => z[14]) = 0; | 
 |         (b[8] => z[14]) = 0; | 
 |         (b[9] => z[14]) = 0; | 
 |         (b[10] => z[14]) = 0; | 
 |         (b[11] => z[14]) = 0; | 
 |         (b[12] => z[14]) = 0; | 
 |         (b[13] => z[14]) = 0; | 
 |         (b[14] => z[14]) = 0; | 
 |         (b[15] => z[14]) = 0; | 
 |         (b[16] => z[14]) = 0; | 
 |         (b[17] => z[14]) = 0; | 
 |         (a[0] => z[15]) = 0; | 
 |         (a[1] => z[15]) = 0; | 
 |         (a[2] => z[15]) = 0; | 
 |         (a[3] => z[15]) = 0; | 
 |         (a[4] => z[15]) = 0; | 
 |         (a[5] => z[15]) = 0; | 
 |         (a[6] => z[15]) = 0; | 
 |         (a[7] => z[15]) = 0; | 
 |         (a[8] => z[15]) = 0; | 
 |         (a[9] => z[15]) = 0; | 
 |         (a[10] => z[15]) = 0; | 
 |         (a[11] => z[15]) = 0; | 
 |         (a[12] => z[15]) = 0; | 
 |         (a[13] => z[15]) = 0; | 
 |         (a[14] => z[15]) = 0; | 
 |         (a[15] => z[15]) = 0; | 
 |         (a[16] => z[15]) = 0; | 
 |         (a[17] => z[15]) = 0; | 
 |         (a[18] => z[15]) = 0; | 
 |         (a[19] => z[15]) = 0; | 
 |         (b[0] => z[15]) = 0; | 
 |         (b[1] => z[15]) = 0; | 
 |         (b[2] => z[15]) = 0; | 
 |         (b[3] => z[15]) = 0; | 
 |         (b[4] => z[15]) = 0; | 
 |         (b[5] => z[15]) = 0; | 
 |         (b[6] => z[15]) = 0; | 
 |         (b[7] => z[15]) = 0; | 
 |         (b[8] => z[15]) = 0; | 
 |         (b[9] => z[15]) = 0; | 
 |         (b[10] => z[15]) = 0; | 
 |         (b[11] => z[15]) = 0; | 
 |         (b[12] => z[15]) = 0; | 
 |         (b[13] => z[15]) = 0; | 
 |         (b[14] => z[15]) = 0; | 
 |         (b[15] => z[15]) = 0; | 
 |         (b[16] => z[15]) = 0; | 
 |         (b[17] => z[15]) = 0; | 
 |         (a[0] => z[16]) = 0; | 
 |         (a[1] => z[16]) = 0; | 
 |         (a[2] => z[16]) = 0; | 
 |         (a[3] => z[16]) = 0; | 
 |         (a[4] => z[16]) = 0; | 
 |         (a[5] => z[16]) = 0; | 
 |         (a[6] => z[16]) = 0; | 
 |         (a[7] => z[16]) = 0; | 
 |         (a[8] => z[16]) = 0; | 
 |         (a[9] => z[16]) = 0; | 
 |         (a[10] => z[16]) = 0; | 
 |         (a[11] => z[16]) = 0; | 
 |         (a[12] => z[16]) = 0; | 
 |         (a[13] => z[16]) = 0; | 
 |         (a[14] => z[16]) = 0; | 
 |         (a[15] => z[16]) = 0; | 
 |         (a[16] => z[16]) = 0; | 
 |         (a[17] => z[16]) = 0; | 
 |         (a[18] => z[16]) = 0; | 
 |         (a[19] => z[16]) = 0; | 
 |         (b[0] => z[16]) = 0; | 
 |         (b[1] => z[16]) = 0; | 
 |         (b[2] => z[16]) = 0; | 
 |         (b[3] => z[16]) = 0; | 
 |         (b[4] => z[16]) = 0; | 
 |         (b[5] => z[16]) = 0; | 
 |         (b[6] => z[16]) = 0; | 
 |         (b[7] => z[16]) = 0; | 
 |         (b[8] => z[16]) = 0; | 
 |         (b[9] => z[16]) = 0; | 
 |         (b[10] => z[16]) = 0; | 
 |         (b[11] => z[16]) = 0; | 
 |         (b[12] => z[16]) = 0; | 
 |         (b[13] => z[16]) = 0; | 
 |         (b[14] => z[16]) = 0; | 
 |         (b[15] => z[16]) = 0; | 
 |         (b[16] => z[16]) = 0; | 
 |         (b[17] => z[16]) = 0; | 
 |         (a[0] => z[17]) = 0; | 
 |         (a[1] => z[17]) = 0; | 
 |         (a[2] => z[17]) = 0; | 
 |         (a[3] => z[17]) = 0; | 
 |         (a[4] => z[17]) = 0; | 
 |         (a[5] => z[17]) = 0; | 
 |         (a[6] => z[17]) = 0; | 
 |         (a[7] => z[17]) = 0; | 
 |         (a[8] => z[17]) = 0; | 
 |         (a[9] => z[17]) = 0; | 
 |         (a[10] => z[17]) = 0; | 
 |         (a[11] => z[17]) = 0; | 
 |         (a[12] => z[17]) = 0; | 
 |         (a[13] => z[17]) = 0; | 
 |         (a[14] => z[17]) = 0; | 
 |         (a[15] => z[17]) = 0; | 
 |         (a[16] => z[17]) = 0; | 
 |         (a[17] => z[17]) = 0; | 
 |         (a[18] => z[17]) = 0; | 
 |         (a[19] => z[17]) = 0; | 
 |         (b[0] => z[17]) = 0; | 
 |         (b[1] => z[17]) = 0; | 
 |         (b[2] => z[17]) = 0; | 
 |         (b[3] => z[17]) = 0; | 
 |         (b[4] => z[17]) = 0; | 
 |         (b[5] => z[17]) = 0; | 
 |         (b[6] => z[17]) = 0; | 
 |         (b[7] => z[17]) = 0; | 
 |         (b[8] => z[17]) = 0; | 
 |         (b[9] => z[17]) = 0; | 
 |         (b[10] => z[17]) = 0; | 
 |         (b[11] => z[17]) = 0; | 
 |         (b[12] => z[17]) = 0; | 
 |         (b[13] => z[17]) = 0; | 
 |         (b[14] => z[17]) = 0; | 
 |         (b[15] => z[17]) = 0; | 
 |         (b[16] => z[17]) = 0; | 
 |         (b[17] => z[17]) = 0; | 
 |         (a[0] => z[18]) = 0; | 
 |         (a[1] => z[18]) = 0; | 
 |         (a[2] => z[18]) = 0; | 
 |         (a[3] => z[18]) = 0; | 
 |         (a[4] => z[18]) = 0; | 
 |         (a[5] => z[18]) = 0; | 
 |         (a[6] => z[18]) = 0; | 
 |         (a[7] => z[18]) = 0; | 
 |         (a[8] => z[18]) = 0; | 
 |         (a[9] => z[18]) = 0; | 
 |         (a[10] => z[18]) = 0; | 
 |         (a[11] => z[18]) = 0; | 
 |         (a[12] => z[18]) = 0; | 
 |         (a[13] => z[18]) = 0; | 
 |         (a[14] => z[18]) = 0; | 
 |         (a[15] => z[18]) = 0; | 
 |         (a[16] => z[18]) = 0; | 
 |         (a[17] => z[18]) = 0; | 
 |         (a[18] => z[18]) = 0; | 
 |         (a[19] => z[18]) = 0; | 
 |         (b[0] => z[18]) = 0; | 
 |         (b[1] => z[18]) = 0; | 
 |         (b[2] => z[18]) = 0; | 
 |         (b[3] => z[18]) = 0; | 
 |         (b[4] => z[18]) = 0; | 
 |         (b[5] => z[18]) = 0; | 
 |         (b[6] => z[18]) = 0; | 
 |         (b[7] => z[18]) = 0; | 
 |         (b[8] => z[18]) = 0; | 
 |         (b[9] => z[18]) = 0; | 
 |         (b[10] => z[18]) = 0; | 
 |         (b[11] => z[18]) = 0; | 
 |         (b[12] => z[18]) = 0; | 
 |         (b[13] => z[18]) = 0; | 
 |         (b[14] => z[18]) = 0; | 
 |         (b[15] => z[18]) = 0; | 
 |         (b[16] => z[18]) = 0; | 
 |         (b[17] => z[18]) = 0; | 
 |         (a[0] => z[19]) = 0; | 
 |         (a[1] => z[19]) = 0; | 
 |         (a[2] => z[19]) = 0; | 
 |         (a[3] => z[19]) = 0; | 
 |         (a[4] => z[19]) = 0; | 
 |         (a[5] => z[19]) = 0; | 
 |         (a[6] => z[19]) = 0; | 
 |         (a[7] => z[19]) = 0; | 
 |         (a[8] => z[19]) = 0; | 
 |         (a[9] => z[19]) = 0; | 
 |         (a[10] => z[19]) = 0; | 
 |         (a[11] => z[19]) = 0; | 
 |         (a[12] => z[19]) = 0; | 
 |         (a[13] => z[19]) = 0; | 
 |         (a[14] => z[19]) = 0; | 
 |         (a[15] => z[19]) = 0; | 
 |         (a[16] => z[19]) = 0; | 
 |         (a[17] => z[19]) = 0; | 
 |         (a[18] => z[19]) = 0; | 
 |         (a[19] => z[19]) = 0; | 
 |         (b[0] => z[19]) = 0; | 
 |         (b[1] => z[19]) = 0; | 
 |         (b[2] => z[19]) = 0; | 
 |         (b[3] => z[19]) = 0; | 
 |         (b[4] => z[19]) = 0; | 
 |         (b[5] => z[19]) = 0; | 
 |         (b[6] => z[19]) = 0; | 
 |         (b[7] => z[19]) = 0; | 
 |         (b[8] => z[19]) = 0; | 
 |         (b[9] => z[19]) = 0; | 
 |         (b[10] => z[19]) = 0; | 
 |         (b[11] => z[19]) = 0; | 
 |         (b[12] => z[19]) = 0; | 
 |         (b[13] => z[19]) = 0; | 
 |         (b[14] => z[19]) = 0; | 
 |         (b[15] => z[19]) = 0; | 
 |         (b[16] => z[19]) = 0; | 
 |         (b[17] => z[19]) = 0; | 
 |         (a[0] => z[20]) = 0; | 
 |         (a[1] => z[20]) = 0; | 
 |         (a[2] => z[20]) = 0; | 
 |         (a[3] => z[20]) = 0; | 
 |         (a[4] => z[20]) = 0; | 
 |         (a[5] => z[20]) = 0; | 
 |         (a[6] => z[20]) = 0; | 
 |         (a[7] => z[20]) = 0; | 
 |         (a[8] => z[20]) = 0; | 
 |         (a[9] => z[20]) = 0; | 
 |         (a[10] => z[20]) = 0; | 
 |         (a[11] => z[20]) = 0; | 
 |         (a[12] => z[20]) = 0; | 
 |         (a[13] => z[20]) = 0; | 
 |         (a[14] => z[20]) = 0; | 
 |         (a[15] => z[20]) = 0; | 
 |         (a[16] => z[20]) = 0; | 
 |         (a[17] => z[20]) = 0; | 
 |         (a[18] => z[20]) = 0; | 
 |         (a[19] => z[20]) = 0; | 
 |         (b[0] => z[20]) = 0; | 
 |         (b[1] => z[20]) = 0; | 
 |         (b[2] => z[20]) = 0; | 
 |         (b[3] => z[20]) = 0; | 
 |         (b[4] => z[20]) = 0; | 
 |         (b[5] => z[20]) = 0; | 
 |         (b[6] => z[20]) = 0; | 
 |         (b[7] => z[20]) = 0; | 
 |         (b[8] => z[20]) = 0; | 
 |         (b[9] => z[20]) = 0; | 
 |         (b[10] => z[20]) = 0; | 
 |         (b[11] => z[20]) = 0; | 
 |         (b[12] => z[20]) = 0; | 
 |         (b[13] => z[20]) = 0; | 
 |         (b[14] => z[20]) = 0; | 
 |         (b[15] => z[20]) = 0; | 
 |         (b[16] => z[20]) = 0; | 
 |         (b[17] => z[20]) = 0; | 
 |         (a[0] => z[21]) = 0; | 
 |         (a[1] => z[21]) = 0; | 
 |         (a[2] => z[21]) = 0; | 
 |         (a[3] => z[21]) = 0; | 
 |         (a[4] => z[21]) = 0; | 
 |         (a[5] => z[21]) = 0; | 
 |         (a[6] => z[21]) = 0; | 
 |         (a[7] => z[21]) = 0; | 
 |         (a[8] => z[21]) = 0; | 
 |         (a[9] => z[21]) = 0; | 
 |         (a[10] => z[21]) = 0; | 
 |         (a[11] => z[21]) = 0; | 
 |         (a[12] => z[21]) = 0; | 
 |         (a[13] => z[21]) = 0; | 
 |         (a[14] => z[21]) = 0; | 
 |         (a[15] => z[21]) = 0; | 
 |         (a[16] => z[21]) = 0; | 
 |         (a[17] => z[21]) = 0; | 
 |         (a[18] => z[21]) = 0; | 
 |         (a[19] => z[21]) = 0; | 
 |         (b[0] => z[21]) = 0; | 
 |         (b[1] => z[21]) = 0; | 
 |         (b[2] => z[21]) = 0; | 
 |         (b[3] => z[21]) = 0; | 
 |         (b[4] => z[21]) = 0; | 
 |         (b[5] => z[21]) = 0; | 
 |         (b[6] => z[21]) = 0; | 
 |         (b[7] => z[21]) = 0; | 
 |         (b[8] => z[21]) = 0; | 
 |         (b[9] => z[21]) = 0; | 
 |         (b[10] => z[21]) = 0; | 
 |         (b[11] => z[21]) = 0; | 
 |         (b[12] => z[21]) = 0; | 
 |         (b[13] => z[21]) = 0; | 
 |         (b[14] => z[21]) = 0; | 
 |         (b[15] => z[21]) = 0; | 
 |         (b[16] => z[21]) = 0; | 
 |         (b[17] => z[21]) = 0; | 
 |         (a[0] => z[22]) = 0; | 
 |         (a[1] => z[22]) = 0; | 
 |         (a[2] => z[22]) = 0; | 
 |         (a[3] => z[22]) = 0; | 
 |         (a[4] => z[22]) = 0; | 
 |         (a[5] => z[22]) = 0; | 
 |         (a[6] => z[22]) = 0; | 
 |         (a[7] => z[22]) = 0; | 
 |         (a[8] => z[22]) = 0; | 
 |         (a[9] => z[22]) = 0; | 
 |         (a[10] => z[22]) = 0; | 
 |         (a[11] => z[22]) = 0; | 
 |         (a[12] => z[22]) = 0; | 
 |         (a[13] => z[22]) = 0; | 
 |         (a[14] => z[22]) = 0; | 
 |         (a[15] => z[22]) = 0; | 
 |         (a[16] => z[22]) = 0; | 
 |         (a[17] => z[22]) = 0; | 
 |         (a[18] => z[22]) = 0; | 
 |         (a[19] => z[22]) = 0; | 
 |         (b[0] => z[22]) = 0; | 
 |         (b[1] => z[22]) = 0; | 
 |         (b[2] => z[22]) = 0; | 
 |         (b[3] => z[22]) = 0; | 
 |         (b[4] => z[22]) = 0; | 
 |         (b[5] => z[22]) = 0; | 
 |         (b[6] => z[22]) = 0; | 
 |         (b[7] => z[22]) = 0; | 
 |         (b[8] => z[22]) = 0; | 
 |         (b[9] => z[22]) = 0; | 
 |         (b[10] => z[22]) = 0; | 
 |         (b[11] => z[22]) = 0; | 
 |         (b[12] => z[22]) = 0; | 
 |         (b[13] => z[22]) = 0; | 
 |         (b[14] => z[22]) = 0; | 
 |         (b[15] => z[22]) = 0; | 
 |         (b[16] => z[22]) = 0; | 
 |         (b[17] => z[22]) = 0; | 
 |         (a[0] => z[23]) = 0; | 
 |         (a[1] => z[23]) = 0; | 
 |         (a[2] => z[23]) = 0; | 
 |         (a[3] => z[23]) = 0; | 
 |         (a[4] => z[23]) = 0; | 
 |         (a[5] => z[23]) = 0; | 
 |         (a[6] => z[23]) = 0; | 
 |         (a[7] => z[23]) = 0; | 
 |         (a[8] => z[23]) = 0; | 
 |         (a[9] => z[23]) = 0; | 
 |         (a[10] => z[23]) = 0; | 
 |         (a[11] => z[23]) = 0; | 
 |         (a[12] => z[23]) = 0; | 
 |         (a[13] => z[23]) = 0; | 
 |         (a[14] => z[23]) = 0; | 
 |         (a[15] => z[23]) = 0; | 
 |         (a[16] => z[23]) = 0; | 
 |         (a[17] => z[23]) = 0; | 
 |         (a[18] => z[23]) = 0; | 
 |         (a[19] => z[23]) = 0; | 
 |         (b[0] => z[23]) = 0; | 
 |         (b[1] => z[23]) = 0; | 
 |         (b[2] => z[23]) = 0; | 
 |         (b[3] => z[23]) = 0; | 
 |         (b[4] => z[23]) = 0; | 
 |         (b[5] => z[23]) = 0; | 
 |         (b[6] => z[23]) = 0; | 
 |         (b[7] => z[23]) = 0; | 
 |         (b[8] => z[23]) = 0; | 
 |         (b[9] => z[23]) = 0; | 
 |         (b[10] => z[23]) = 0; | 
 |         (b[11] => z[23]) = 0; | 
 |         (b[12] => z[23]) = 0; | 
 |         (b[13] => z[23]) = 0; | 
 |         (b[14] => z[23]) = 0; | 
 |         (b[15] => z[23]) = 0; | 
 |         (b[16] => z[23]) = 0; | 
 |         (b[17] => z[23]) = 0; | 
 |         (a[0] => z[24]) = 0; | 
 |         (a[1] => z[24]) = 0; | 
 |         (a[2] => z[24]) = 0; | 
 |         (a[3] => z[24]) = 0; | 
 |         (a[4] => z[24]) = 0; | 
 |         (a[5] => z[24]) = 0; | 
 |         (a[6] => z[24]) = 0; | 
 |         (a[7] => z[24]) = 0; | 
 |         (a[8] => z[24]) = 0; | 
 |         (a[9] => z[24]) = 0; | 
 |         (a[10] => z[24]) = 0; | 
 |         (a[11] => z[24]) = 0; | 
 |         (a[12] => z[24]) = 0; | 
 |         (a[13] => z[24]) = 0; | 
 |         (a[14] => z[24]) = 0; | 
 |         (a[15] => z[24]) = 0; | 
 |         (a[16] => z[24]) = 0; | 
 |         (a[17] => z[24]) = 0; | 
 |         (a[18] => z[24]) = 0; | 
 |         (a[19] => z[24]) = 0; | 
 |         (b[0] => z[24]) = 0; | 
 |         (b[1] => z[24]) = 0; | 
 |         (b[2] => z[24]) = 0; | 
 |         (b[3] => z[24]) = 0; | 
 |         (b[4] => z[24]) = 0; | 
 |         (b[5] => z[24]) = 0; | 
 |         (b[6] => z[24]) = 0; | 
 |         (b[7] => z[24]) = 0; | 
 |         (b[8] => z[24]) = 0; | 
 |         (b[9] => z[24]) = 0; | 
 |         (b[10] => z[24]) = 0; | 
 |         (b[11] => z[24]) = 0; | 
 |         (b[12] => z[24]) = 0; | 
 |         (b[13] => z[24]) = 0; | 
 |         (b[14] => z[24]) = 0; | 
 |         (b[15] => z[24]) = 0; | 
 |         (b[16] => z[24]) = 0; | 
 |         (b[17] => z[24]) = 0; | 
 |         (a[0] => z[25]) = 0; | 
 |         (a[1] => z[25]) = 0; | 
 |         (a[2] => z[25]) = 0; | 
 |         (a[3] => z[25]) = 0; | 
 |         (a[4] => z[25]) = 0; | 
 |         (a[5] => z[25]) = 0; | 
 |         (a[6] => z[25]) = 0; | 
 |         (a[7] => z[25]) = 0; | 
 |         (a[8] => z[25]) = 0; | 
 |         (a[9] => z[25]) = 0; | 
 |         (a[10] => z[25]) = 0; | 
 |         (a[11] => z[25]) = 0; | 
 |         (a[12] => z[25]) = 0; | 
 |         (a[13] => z[25]) = 0; | 
 |         (a[14] => z[25]) = 0; | 
 |         (a[15] => z[25]) = 0; | 
 |         (a[16] => z[25]) = 0; | 
 |         (a[17] => z[25]) = 0; | 
 |         (a[18] => z[25]) = 0; | 
 |         (a[19] => z[25]) = 0; | 
 |         (b[0] => z[25]) = 0; | 
 |         (b[1] => z[25]) = 0; | 
 |         (b[2] => z[25]) = 0; | 
 |         (b[3] => z[25]) = 0; | 
 |         (b[4] => z[25]) = 0; | 
 |         (b[5] => z[25]) = 0; | 
 |         (b[6] => z[25]) = 0; | 
 |         (b[7] => z[25]) = 0; | 
 |         (b[8] => z[25]) = 0; | 
 |         (b[9] => z[25]) = 0; | 
 |         (b[10] => z[25]) = 0; | 
 |         (b[11] => z[25]) = 0; | 
 |         (b[12] => z[25]) = 0; | 
 |         (b[13] => z[25]) = 0; | 
 |         (b[14] => z[25]) = 0; | 
 |         (b[15] => z[25]) = 0; | 
 |         (b[16] => z[25]) = 0; | 
 |         (b[17] => z[25]) = 0; | 
 |         (a[0] => z[26]) = 0; | 
 |         (a[1] => z[26]) = 0; | 
 |         (a[2] => z[26]) = 0; | 
 |         (a[3] => z[26]) = 0; | 
 |         (a[4] => z[26]) = 0; | 
 |         (a[5] => z[26]) = 0; | 
 |         (a[6] => z[26]) = 0; | 
 |         (a[7] => z[26]) = 0; | 
 |         (a[8] => z[26]) = 0; | 
 |         (a[9] => z[26]) = 0; | 
 |         (a[10] => z[26]) = 0; | 
 |         (a[11] => z[26]) = 0; | 
 |         (a[12] => z[26]) = 0; | 
 |         (a[13] => z[26]) = 0; | 
 |         (a[14] => z[26]) = 0; | 
 |         (a[15] => z[26]) = 0; | 
 |         (a[16] => z[26]) = 0; | 
 |         (a[17] => z[26]) = 0; | 
 |         (a[18] => z[26]) = 0; | 
 |         (a[19] => z[26]) = 0; | 
 |         (b[0] => z[26]) = 0; | 
 |         (b[1] => z[26]) = 0; | 
 |         (b[2] => z[26]) = 0; | 
 |         (b[3] => z[26]) = 0; | 
 |         (b[4] => z[26]) = 0; | 
 |         (b[5] => z[26]) = 0; | 
 |         (b[6] => z[26]) = 0; | 
 |         (b[7] => z[26]) = 0; | 
 |         (b[8] => z[26]) = 0; | 
 |         (b[9] => z[26]) = 0; | 
 |         (b[10] => z[26]) = 0; | 
 |         (b[11] => z[26]) = 0; | 
 |         (b[12] => z[26]) = 0; | 
 |         (b[13] => z[26]) = 0; | 
 |         (b[14] => z[26]) = 0; | 
 |         (b[15] => z[26]) = 0; | 
 |         (b[16] => z[26]) = 0; | 
 |         (b[17] => z[26]) = 0; | 
 |         (a[0] => z[27]) = 0; | 
 |         (a[1] => z[27]) = 0; | 
 |         (a[2] => z[27]) = 0; | 
 |         (a[3] => z[27]) = 0; | 
 |         (a[4] => z[27]) = 0; | 
 |         (a[5] => z[27]) = 0; | 
 |         (a[6] => z[27]) = 0; | 
 |         (a[7] => z[27]) = 0; | 
 |         (a[8] => z[27]) = 0; | 
 |         (a[9] => z[27]) = 0; | 
 |         (a[10] => z[27]) = 0; | 
 |         (a[11] => z[27]) = 0; | 
 |         (a[12] => z[27]) = 0; | 
 |         (a[13] => z[27]) = 0; | 
 |         (a[14] => z[27]) = 0; | 
 |         (a[15] => z[27]) = 0; | 
 |         (a[16] => z[27]) = 0; | 
 |         (a[17] => z[27]) = 0; | 
 |         (a[18] => z[27]) = 0; | 
 |         (a[19] => z[27]) = 0; | 
 |         (b[0] => z[27]) = 0; | 
 |         (b[1] => z[27]) = 0; | 
 |         (b[2] => z[27]) = 0; | 
 |         (b[3] => z[27]) = 0; | 
 |         (b[4] => z[27]) = 0; | 
 |         (b[5] => z[27]) = 0; | 
 |         (b[6] => z[27]) = 0; | 
 |         (b[7] => z[27]) = 0; | 
 |         (b[8] => z[27]) = 0; | 
 |         (b[9] => z[27]) = 0; | 
 |         (b[10] => z[27]) = 0; | 
 |         (b[11] => z[27]) = 0; | 
 |         (b[12] => z[27]) = 0; | 
 |         (b[13] => z[27]) = 0; | 
 |         (b[14] => z[27]) = 0; | 
 |         (b[15] => z[27]) = 0; | 
 |         (b[16] => z[27]) = 0; | 
 |         (b[17] => z[27]) = 0; | 
 |         (a[0] => z[28]) = 0; | 
 |         (a[1] => z[28]) = 0; | 
 |         (a[2] => z[28]) = 0; | 
 |         (a[3] => z[28]) = 0; | 
 |         (a[4] => z[28]) = 0; | 
 |         (a[5] => z[28]) = 0; | 
 |         (a[6] => z[28]) = 0; | 
 |         (a[7] => z[28]) = 0; | 
 |         (a[8] => z[28]) = 0; | 
 |         (a[9] => z[28]) = 0; | 
 |         (a[10] => z[28]) = 0; | 
 |         (a[11] => z[28]) = 0; | 
 |         (a[12] => z[28]) = 0; | 
 |         (a[13] => z[28]) = 0; | 
 |         (a[14] => z[28]) = 0; | 
 |         (a[15] => z[28]) = 0; | 
 |         (a[16] => z[28]) = 0; | 
 |         (a[17] => z[28]) = 0; | 
 |         (a[18] => z[28]) = 0; | 
 |         (a[19] => z[28]) = 0; | 
 |         (b[0] => z[28]) = 0; | 
 |         (b[1] => z[28]) = 0; | 
 |         (b[2] => z[28]) = 0; | 
 |         (b[3] => z[28]) = 0; | 
 |         (b[4] => z[28]) = 0; | 
 |         (b[5] => z[28]) = 0; | 
 |         (b[6] => z[28]) = 0; | 
 |         (b[7] => z[28]) = 0; | 
 |         (b[8] => z[28]) = 0; | 
 |         (b[9] => z[28]) = 0; | 
 |         (b[10] => z[28]) = 0; | 
 |         (b[11] => z[28]) = 0; | 
 |         (b[12] => z[28]) = 0; | 
 |         (b[13] => z[28]) = 0; | 
 |         (b[14] => z[28]) = 0; | 
 |         (b[15] => z[28]) = 0; | 
 |         (b[16] => z[28]) = 0; | 
 |         (b[17] => z[28]) = 0; | 
 |         (a[0] => z[29]) = 0; | 
 |         (a[1] => z[29]) = 0; | 
 |         (a[2] => z[29]) = 0; | 
 |         (a[3] => z[29]) = 0; | 
 |         (a[4] => z[29]) = 0; | 
 |         (a[5] => z[29]) = 0; | 
 |         (a[6] => z[29]) = 0; | 
 |         (a[7] => z[29]) = 0; | 
 |         (a[8] => z[29]) = 0; | 
 |         (a[9] => z[29]) = 0; | 
 |         (a[10] => z[29]) = 0; | 
 |         (a[11] => z[29]) = 0; | 
 |         (a[12] => z[29]) = 0; | 
 |         (a[13] => z[29]) = 0; | 
 |         (a[14] => z[29]) = 0; | 
 |         (a[15] => z[29]) = 0; | 
 |         (a[16] => z[29]) = 0; | 
 |         (a[17] => z[29]) = 0; | 
 |         (a[18] => z[29]) = 0; | 
 |         (a[19] => z[29]) = 0; | 
 |         (b[0] => z[29]) = 0; | 
 |         (b[1] => z[29]) = 0; | 
 |         (b[2] => z[29]) = 0; | 
 |         (b[3] => z[29]) = 0; | 
 |         (b[4] => z[29]) = 0; | 
 |         (b[5] => z[29]) = 0; | 
 |         (b[6] => z[29]) = 0; | 
 |         (b[7] => z[29]) = 0; | 
 |         (b[8] => z[29]) = 0; | 
 |         (b[9] => z[29]) = 0; | 
 |         (b[10] => z[29]) = 0; | 
 |         (b[11] => z[29]) = 0; | 
 |         (b[12] => z[29]) = 0; | 
 |         (b[13] => z[29]) = 0; | 
 |         (b[14] => z[29]) = 0; | 
 |         (b[15] => z[29]) = 0; | 
 |         (b[16] => z[29]) = 0; | 
 |         (b[17] => z[29]) = 0; | 
 |         (a[0] => z[30]) = 0; | 
 |         (a[1] => z[30]) = 0; | 
 |         (a[2] => z[30]) = 0; | 
 |         (a[3] => z[30]) = 0; | 
 |         (a[4] => z[30]) = 0; | 
 |         (a[5] => z[30]) = 0; | 
 |         (a[6] => z[30]) = 0; | 
 |         (a[7] => z[30]) = 0; | 
 |         (a[8] => z[30]) = 0; | 
 |         (a[9] => z[30]) = 0; | 
 |         (a[10] => z[30]) = 0; | 
 |         (a[11] => z[30]) = 0; | 
 |         (a[12] => z[30]) = 0; | 
 |         (a[13] => z[30]) = 0; | 
 |         (a[14] => z[30]) = 0; | 
 |         (a[15] => z[30]) = 0; | 
 |         (a[16] => z[30]) = 0; | 
 |         (a[17] => z[30]) = 0; | 
 |         (a[18] => z[30]) = 0; | 
 |         (a[19] => z[30]) = 0; | 
 |         (b[0] => z[30]) = 0; | 
 |         (b[1] => z[30]) = 0; | 
 |         (b[2] => z[30]) = 0; | 
 |         (b[3] => z[30]) = 0; | 
 |         (b[4] => z[30]) = 0; | 
 |         (b[5] => z[30]) = 0; | 
 |         (b[6] => z[30]) = 0; | 
 |         (b[7] => z[30]) = 0; | 
 |         (b[8] => z[30]) = 0; | 
 |         (b[9] => z[30]) = 0; | 
 |         (b[10] => z[30]) = 0; | 
 |         (b[11] => z[30]) = 0; | 
 |         (b[12] => z[30]) = 0; | 
 |         (b[13] => z[30]) = 0; | 
 |         (b[14] => z[30]) = 0; | 
 |         (b[15] => z[30]) = 0; | 
 |         (b[16] => z[30]) = 0; | 
 |         (b[17] => z[30]) = 0; | 
 |         (a[0] => z[31]) = 0; | 
 |         (a[1] => z[31]) = 0; | 
 |         (a[2] => z[31]) = 0; | 
 |         (a[3] => z[31]) = 0; | 
 |         (a[4] => z[31]) = 0; | 
 |         (a[5] => z[31]) = 0; | 
 |         (a[6] => z[31]) = 0; | 
 |         (a[7] => z[31]) = 0; | 
 |         (a[8] => z[31]) = 0; | 
 |         (a[9] => z[31]) = 0; | 
 |         (a[10] => z[31]) = 0; | 
 |         (a[11] => z[31]) = 0; | 
 |         (a[12] => z[31]) = 0; | 
 |         (a[13] => z[31]) = 0; | 
 |         (a[14] => z[31]) = 0; | 
 |         (a[15] => z[31]) = 0; | 
 |         (a[16] => z[31]) = 0; | 
 |         (a[17] => z[31]) = 0; | 
 |         (a[18] => z[31]) = 0; | 
 |         (a[19] => z[31]) = 0; | 
 |         (b[0] => z[31]) = 0; | 
 |         (b[1] => z[31]) = 0; | 
 |         (b[2] => z[31]) = 0; | 
 |         (b[3] => z[31]) = 0; | 
 |         (b[4] => z[31]) = 0; | 
 |         (b[5] => z[31]) = 0; | 
 |         (b[6] => z[31]) = 0; | 
 |         (b[7] => z[31]) = 0; | 
 |         (b[8] => z[31]) = 0; | 
 |         (b[9] => z[31]) = 0; | 
 |         (b[10] => z[31]) = 0; | 
 |         (b[11] => z[31]) = 0; | 
 |         (b[12] => z[31]) = 0; | 
 |         (b[13] => z[31]) = 0; | 
 |         (b[14] => z[31]) = 0; | 
 |         (b[15] => z[31]) = 0; | 
 |         (b[16] => z[31]) = 0; | 
 |         (b[17] => z[31]) = 0; | 
 |         (a[0] => z[32]) = 0; | 
 |         (a[1] => z[32]) = 0; | 
 |         (a[2] => z[32]) = 0; | 
 |         (a[3] => z[32]) = 0; | 
 |         (a[4] => z[32]) = 0; | 
 |         (a[5] => z[32]) = 0; | 
 |         (a[6] => z[32]) = 0; | 
 |         (a[7] => z[32]) = 0; | 
 |         (a[8] => z[32]) = 0; | 
 |         (a[9] => z[32]) = 0; | 
 |         (a[10] => z[32]) = 0; | 
 |         (a[11] => z[32]) = 0; | 
 |         (a[12] => z[32]) = 0; | 
 |         (a[13] => z[32]) = 0; | 
 |         (a[14] => z[32]) = 0; | 
 |         (a[15] => z[32]) = 0; | 
 |         (a[16] => z[32]) = 0; | 
 |         (a[17] => z[32]) = 0; | 
 |         (a[18] => z[32]) = 0; | 
 |         (a[19] => z[32]) = 0; | 
 |         (b[0] => z[32]) = 0; | 
 |         (b[1] => z[32]) = 0; | 
 |         (b[2] => z[32]) = 0; | 
 |         (b[3] => z[32]) = 0; | 
 |         (b[4] => z[32]) = 0; | 
 |         (b[5] => z[32]) = 0; | 
 |         (b[6] => z[32]) = 0; | 
 |         (b[7] => z[32]) = 0; | 
 |         (b[8] => z[32]) = 0; | 
 |         (b[9] => z[32]) = 0; | 
 |         (b[10] => z[32]) = 0; | 
 |         (b[11] => z[32]) = 0; | 
 |         (b[12] => z[32]) = 0; | 
 |         (b[13] => z[32]) = 0; | 
 |         (b[14] => z[32]) = 0; | 
 |         (b[15] => z[32]) = 0; | 
 |         (b[16] => z[32]) = 0; | 
 |         (b[17] => z[32]) = 0; | 
 |         (a[0] => z[33]) = 0; | 
 |         (a[1] => z[33]) = 0; | 
 |         (a[2] => z[33]) = 0; | 
 |         (a[3] => z[33]) = 0; | 
 |         (a[4] => z[33]) = 0; | 
 |         (a[5] => z[33]) = 0; | 
 |         (a[6] => z[33]) = 0; | 
 |         (a[7] => z[33]) = 0; | 
 |         (a[8] => z[33]) = 0; | 
 |         (a[9] => z[33]) = 0; | 
 |         (a[10] => z[33]) = 0; | 
 |         (a[11] => z[33]) = 0; | 
 |         (a[12] => z[33]) = 0; | 
 |         (a[13] => z[33]) = 0; | 
 |         (a[14] => z[33]) = 0; | 
 |         (a[15] => z[33]) = 0; | 
 |         (a[16] => z[33]) = 0; | 
 |         (a[17] => z[33]) = 0; | 
 |         (a[18] => z[33]) = 0; | 
 |         (a[19] => z[33]) = 0; | 
 |         (b[0] => z[33]) = 0; | 
 |         (b[1] => z[33]) = 0; | 
 |         (b[2] => z[33]) = 0; | 
 |         (b[3] => z[33]) = 0; | 
 |         (b[4] => z[33]) = 0; | 
 |         (b[5] => z[33]) = 0; | 
 |         (b[6] => z[33]) = 0; | 
 |         (b[7] => z[33]) = 0; | 
 |         (b[8] => z[33]) = 0; | 
 |         (b[9] => z[33]) = 0; | 
 |         (b[10] => z[33]) = 0; | 
 |         (b[11] => z[33]) = 0; | 
 |         (b[12] => z[33]) = 0; | 
 |         (b[13] => z[33]) = 0; | 
 |         (b[14] => z[33]) = 0; | 
 |         (b[15] => z[33]) = 0; | 
 |         (b[16] => z[33]) = 0; | 
 |         (b[17] => z[33]) = 0; | 
 |         (a[0] => z[34]) = 0; | 
 |         (a[1] => z[34]) = 0; | 
 |         (a[2] => z[34]) = 0; | 
 |         (a[3] => z[34]) = 0; | 
 |         (a[4] => z[34]) = 0; | 
 |         (a[5] => z[34]) = 0; | 
 |         (a[6] => z[34]) = 0; | 
 |         (a[7] => z[34]) = 0; | 
 |         (a[8] => z[34]) = 0; | 
 |         (a[9] => z[34]) = 0; | 
 |         (a[10] => z[34]) = 0; | 
 |         (a[11] => z[34]) = 0; | 
 |         (a[12] => z[34]) = 0; | 
 |         (a[13] => z[34]) = 0; | 
 |         (a[14] => z[34]) = 0; | 
 |         (a[15] => z[34]) = 0; | 
 |         (a[16] => z[34]) = 0; | 
 |         (a[17] => z[34]) = 0; | 
 |         (a[18] => z[34]) = 0; | 
 |         (a[19] => z[34]) = 0; | 
 |         (b[0] => z[34]) = 0; | 
 |         (b[1] => z[34]) = 0; | 
 |         (b[2] => z[34]) = 0; | 
 |         (b[3] => z[34]) = 0; | 
 |         (b[4] => z[34]) = 0; | 
 |         (b[5] => z[34]) = 0; | 
 |         (b[6] => z[34]) = 0; | 
 |         (b[7] => z[34]) = 0; | 
 |         (b[8] => z[34]) = 0; | 
 |         (b[9] => z[34]) = 0; | 
 |         (b[10] => z[34]) = 0; | 
 |         (b[11] => z[34]) = 0; | 
 |         (b[12] => z[34]) = 0; | 
 |         (b[13] => z[34]) = 0; | 
 |         (b[14] => z[34]) = 0; | 
 |         (b[15] => z[34]) = 0; | 
 |         (b[16] => z[34]) = 0; | 
 |         (b[17] => z[34]) = 0; | 
 |         (a[0] => z[35]) = 0; | 
 |         (a[1] => z[35]) = 0; | 
 |         (a[2] => z[35]) = 0; | 
 |         (a[3] => z[35]) = 0; | 
 |         (a[4] => z[35]) = 0; | 
 |         (a[5] => z[35]) = 0; | 
 |         (a[6] => z[35]) = 0; | 
 |         (a[7] => z[35]) = 0; | 
 |         (a[8] => z[35]) = 0; | 
 |         (a[9] => z[35]) = 0; | 
 |         (a[10] => z[35]) = 0; | 
 |         (a[11] => z[35]) = 0; | 
 |         (a[12] => z[35]) = 0; | 
 |         (a[13] => z[35]) = 0; | 
 |         (a[14] => z[35]) = 0; | 
 |         (a[15] => z[35]) = 0; | 
 |         (a[16] => z[35]) = 0; | 
 |         (a[17] => z[35]) = 0; | 
 |         (a[18] => z[35]) = 0; | 
 |         (a[19] => z[35]) = 0; | 
 |         (b[0] => z[35]) = 0; | 
 |         (b[1] => z[35]) = 0; | 
 |         (b[2] => z[35]) = 0; | 
 |         (b[3] => z[35]) = 0; | 
 |         (b[4] => z[35]) = 0; | 
 |         (b[5] => z[35]) = 0; | 
 |         (b[6] => z[35]) = 0; | 
 |         (b[7] => z[35]) = 0; | 
 |         (b[8] => z[35]) = 0; | 
 |         (b[9] => z[35]) = 0; | 
 |         (b[10] => z[35]) = 0; | 
 |         (b[11] => z[35]) = 0; | 
 |         (b[12] => z[35]) = 0; | 
 |         (b[13] => z[35]) = 0; | 
 |         (b[14] => z[35]) = 0; | 
 |         (b[15] => z[35]) = 0; | 
 |         (b[16] => z[35]) = 0; | 
 |         (b[17] => z[35]) = 0; | 
 |         (a[0] => z[36]) = 0; | 
 |         (a[1] => z[36]) = 0; | 
 |         (a[2] => z[36]) = 0; | 
 |         (a[3] => z[36]) = 0; | 
 |         (a[4] => z[36]) = 0; | 
 |         (a[5] => z[36]) = 0; | 
 |         (a[6] => z[36]) = 0; | 
 |         (a[7] => z[36]) = 0; | 
 |         (a[8] => z[36]) = 0; | 
 |         (a[9] => z[36]) = 0; | 
 |         (a[10] => z[36]) = 0; | 
 |         (a[11] => z[36]) = 0; | 
 |         (a[12] => z[36]) = 0; | 
 |         (a[13] => z[36]) = 0; | 
 |         (a[14] => z[36]) = 0; | 
 |         (a[15] => z[36]) = 0; | 
 |         (a[16] => z[36]) = 0; | 
 |         (a[17] => z[36]) = 0; | 
 |         (a[18] => z[36]) = 0; | 
 |         (a[19] => z[36]) = 0; | 
 |         (b[0] => z[36]) = 0; | 
 |         (b[1] => z[36]) = 0; | 
 |         (b[2] => z[36]) = 0; | 
 |         (b[3] => z[36]) = 0; | 
 |         (b[4] => z[36]) = 0; | 
 |         (b[5] => z[36]) = 0; | 
 |         (b[6] => z[36]) = 0; | 
 |         (b[7] => z[36]) = 0; | 
 |         (b[8] => z[36]) = 0; | 
 |         (b[9] => z[36]) = 0; | 
 |         (b[10] => z[36]) = 0; | 
 |         (b[11] => z[36]) = 0; | 
 |         (b[12] => z[36]) = 0; | 
 |         (b[13] => z[36]) = 0; | 
 |         (b[14] => z[36]) = 0; | 
 |         (b[15] => z[36]) = 0; | 
 |         (b[16] => z[36]) = 0; | 
 |         (b[17] => z[36]) = 0; | 
 |         (a[0] => z[37]) = 0; | 
 |         (a[1] => z[37]) = 0; | 
 |         (a[2] => z[37]) = 0; | 
 |         (a[3] => z[37]) = 0; | 
 |         (a[4] => z[37]) = 0; | 
 |         (a[5] => z[37]) = 0; | 
 |         (a[6] => z[37]) = 0; | 
 |         (a[7] => z[37]) = 0; | 
 |         (a[8] => z[37]) = 0; | 
 |         (a[9] => z[37]) = 0; | 
 |         (a[10] => z[37]) = 0; | 
 |         (a[11] => z[37]) = 0; | 
 |         (a[12] => z[37]) = 0; | 
 |         (a[13] => z[37]) = 0; | 
 |         (a[14] => z[37]) = 0; | 
 |         (a[15] => z[37]) = 0; | 
 |         (a[16] => z[37]) = 0; | 
 |         (a[17] => z[37]) = 0; | 
 |         (a[18] => z[37]) = 0; | 
 |         (a[19] => z[37]) = 0; | 
 |         (b[0] => z[37]) = 0; | 
 |         (b[1] => z[37]) = 0; | 
 |         (b[2] => z[37]) = 0; | 
 |         (b[3] => z[37]) = 0; | 
 |         (b[4] => z[37]) = 0; | 
 |         (b[5] => z[37]) = 0; | 
 |         (b[6] => z[37]) = 0; | 
 |         (b[7] => z[37]) = 0; | 
 |         (b[8] => z[37]) = 0; | 
 |         (b[9] => z[37]) = 0; | 
 |         (b[10] => z[37]) = 0; | 
 |         (b[11] => z[37]) = 0; | 
 |         (b[12] => z[37]) = 0; | 
 |         (b[13] => z[37]) = 0; | 
 |         (b[14] => z[37]) = 0; | 
 |         (b[15] => z[37]) = 0; | 
 |         (b[16] => z[37]) = 0; | 
 |         (b[17] => z[37]) = 0; | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULT_REGIN ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |  | 
 |     input  wire       f_mode, | 
 |     input  wire [2:0] output_select, | 
 |     input  wire       register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(1'b0), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: a * b (0) | 
 |         .saturate_enable(1'b0), | 
 |         .shift_right(6'b0), | 
 |         .round(1'b0), | 
 |         .subtract(1'b0), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 |  | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULT_REGOUT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |     input  wire       f_mode, | 
 |     input  wire [2:0] output_select, | 
 |     input  wire       register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(1'b0), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: a * b (4) | 
 |         .saturate_enable(1'b0), | 
 |         .shift_right(6'b0), | 
 |         .round(1'b0), | 
 |         .subtract(1'b0), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULT_REGIN_REGOUT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |     input  wire       f_mode, | 
 |     input  wire [2:0] output_select, | 
 |     input  wire       register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(1'b0), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: a * b (4) | 
 |         .saturate_enable(1'b0), | 
 |         .shift_right(6'b0), | 
 |         .round(1'b0), | 
 |         .subtract(1'b0), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTADD ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .dly_b(), | 
 |         .z(z), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         //.clk(1'b0), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: ACCin (2, 3) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 |         (a[0] => z[0]) = 0; | 
 |         (a[1] => z[0]) = 0; | 
 |         (a[2] => z[0]) = 0; | 
 |         (a[3] => z[0]) = 0; | 
 |         (a[4] => z[0]) = 0; | 
 |         (a[5] => z[0]) = 0; | 
 |         (a[6] => z[0]) = 0; | 
 |         (a[7] => z[0]) = 0; | 
 |         (a[8] => z[0]) = 0; | 
 |         (a[9] => z[0]) = 0; | 
 |         (a[10] => z[0]) = 0; | 
 |         (a[11] => z[0]) = 0; | 
 |         (a[12] => z[0]) = 0; | 
 |         (a[13] => z[0]) = 0; | 
 |         (a[14] => z[0]) = 0; | 
 |         (a[15] => z[0]) = 0; | 
 |         (a[16] => z[0]) = 0; | 
 |         (a[17] => z[0]) = 0; | 
 |         (a[18] => z[0]) = 0; | 
 |         (a[19] => z[0]) = 0; | 
 |         (b[0] => z[0]) = 0; | 
 |         (b[1] => z[0]) = 0; | 
 |         (b[2] => z[0]) = 0; | 
 |         (b[3] => z[0]) = 0; | 
 |         (b[4] => z[0]) = 0; | 
 |         (b[5] => z[0]) = 0; | 
 |         (b[6] => z[0]) = 0; | 
 |         (b[7] => z[0]) = 0; | 
 |         (b[8] => z[0]) = 0; | 
 |         (b[9] => z[0]) = 0; | 
 |         (b[10] => z[0]) = 0; | 
 |         (b[11] => z[0]) = 0; | 
 |         (b[12] => z[0]) = 0; | 
 |         (b[13] => z[0]) = 0; | 
 |         (b[14] => z[0]) = 0; | 
 |         (b[15] => z[0]) = 0; | 
 |         (b[16] => z[0]) = 0; | 
 |         (b[17] => z[0]) = 0; | 
 |         (a[0] => z[1]) = 0; | 
 |         (a[1] => z[1]) = 0; | 
 |         (a[2] => z[1]) = 0; | 
 |         (a[3] => z[1]) = 0; | 
 |         (a[4] => z[1]) = 0; | 
 |         (a[5] => z[1]) = 0; | 
 |         (a[6] => z[1]) = 0; | 
 |         (a[7] => z[1]) = 0; | 
 |         (a[8] => z[1]) = 0; | 
 |         (a[9] => z[1]) = 0; | 
 |         (a[10] => z[1]) = 0; | 
 |         (a[11] => z[1]) = 0; | 
 |         (a[12] => z[1]) = 0; | 
 |         (a[13] => z[1]) = 0; | 
 |         (a[14] => z[1]) = 0; | 
 |         (a[15] => z[1]) = 0; | 
 |         (a[16] => z[1]) = 0; | 
 |         (a[17] => z[1]) = 0; | 
 |         (a[18] => z[1]) = 0; | 
 |         (a[19] => z[1]) = 0; | 
 |         (b[0] => z[1]) = 0; | 
 |         (b[1] => z[1]) = 0; | 
 |         (b[2] => z[1]) = 0; | 
 |         (b[3] => z[1]) = 0; | 
 |         (b[4] => z[1]) = 0; | 
 |         (b[5] => z[1]) = 0; | 
 |         (b[6] => z[1]) = 0; | 
 |         (b[7] => z[1]) = 0; | 
 |         (b[8] => z[1]) = 0; | 
 |         (b[9] => z[1]) = 0; | 
 |         (b[10] => z[1]) = 0; | 
 |         (b[11] => z[1]) = 0; | 
 |         (b[12] => z[1]) = 0; | 
 |         (b[13] => z[1]) = 0; | 
 |         (b[14] => z[1]) = 0; | 
 |         (b[15] => z[1]) = 0; | 
 |         (b[16] => z[1]) = 0; | 
 |         (b[17] => z[1]) = 0; | 
 |         (a[0] => z[2]) = 0; | 
 |         (a[1] => z[2]) = 0; | 
 |         (a[2] => z[2]) = 0; | 
 |         (a[3] => z[2]) = 0; | 
 |         (a[4] => z[2]) = 0; | 
 |         (a[5] => z[2]) = 0; | 
 |         (a[6] => z[2]) = 0; | 
 |         (a[7] => z[2]) = 0; | 
 |         (a[8] => z[2]) = 0; | 
 |         (a[9] => z[2]) = 0; | 
 |         (a[10] => z[2]) = 0; | 
 |         (a[11] => z[2]) = 0; | 
 |         (a[12] => z[2]) = 0; | 
 |         (a[13] => z[2]) = 0; | 
 |         (a[14] => z[2]) = 0; | 
 |         (a[15] => z[2]) = 0; | 
 |         (a[16] => z[2]) = 0; | 
 |         (a[17] => z[2]) = 0; | 
 |         (a[18] => z[2]) = 0; | 
 |         (a[19] => z[2]) = 0; | 
 |         (b[0] => z[2]) = 0; | 
 |         (b[1] => z[2]) = 0; | 
 |         (b[2] => z[2]) = 0; | 
 |         (b[3] => z[2]) = 0; | 
 |         (b[4] => z[2]) = 0; | 
 |         (b[5] => z[2]) = 0; | 
 |         (b[6] => z[2]) = 0; | 
 |         (b[7] => z[2]) = 0; | 
 |         (b[8] => z[2]) = 0; | 
 |         (b[9] => z[2]) = 0; | 
 |         (b[10] => z[2]) = 0; | 
 |         (b[11] => z[2]) = 0; | 
 |         (b[12] => z[2]) = 0; | 
 |         (b[13] => z[2]) = 0; | 
 |         (b[14] => z[2]) = 0; | 
 |         (b[15] => z[2]) = 0; | 
 |         (b[16] => z[2]) = 0; | 
 |         (b[17] => z[2]) = 0; | 
 |         (a[0] => z[3]) = 0; | 
 |         (a[1] => z[3]) = 0; | 
 |         (a[2] => z[3]) = 0; | 
 |         (a[3] => z[3]) = 0; | 
 |         (a[4] => z[3]) = 0; | 
 |         (a[5] => z[3]) = 0; | 
 |         (a[6] => z[3]) = 0; | 
 |         (a[7] => z[3]) = 0; | 
 |         (a[8] => z[3]) = 0; | 
 |         (a[9] => z[3]) = 0; | 
 |         (a[10] => z[3]) = 0; | 
 |         (a[11] => z[3]) = 0; | 
 |         (a[12] => z[3]) = 0; | 
 |         (a[13] => z[3]) = 0; | 
 |         (a[14] => z[3]) = 0; | 
 |         (a[15] => z[3]) = 0; | 
 |         (a[16] => z[3]) = 0; | 
 |         (a[17] => z[3]) = 0; | 
 |         (a[18] => z[3]) = 0; | 
 |         (a[19] => z[3]) = 0; | 
 |         (b[0] => z[3]) = 0; | 
 |         (b[1] => z[3]) = 0; | 
 |         (b[2] => z[3]) = 0; | 
 |         (b[3] => z[3]) = 0; | 
 |         (b[4] => z[3]) = 0; | 
 |         (b[5] => z[3]) = 0; | 
 |         (b[6] => z[3]) = 0; | 
 |         (b[7] => z[3]) = 0; | 
 |         (b[8] => z[3]) = 0; | 
 |         (b[9] => z[3]) = 0; | 
 |         (b[10] => z[3]) = 0; | 
 |         (b[11] => z[3]) = 0; | 
 |         (b[12] => z[3]) = 0; | 
 |         (b[13] => z[3]) = 0; | 
 |         (b[14] => z[3]) = 0; | 
 |         (b[15] => z[3]) = 0; | 
 |         (b[16] => z[3]) = 0; | 
 |         (b[17] => z[3]) = 0; | 
 |         (a[0] => z[4]) = 0; | 
 |         (a[1] => z[4]) = 0; | 
 |         (a[2] => z[4]) = 0; | 
 |         (a[3] => z[4]) = 0; | 
 |         (a[4] => z[4]) = 0; | 
 |         (a[5] => z[4]) = 0; | 
 |         (a[6] => z[4]) = 0; | 
 |         (a[7] => z[4]) = 0; | 
 |         (a[8] => z[4]) = 0; | 
 |         (a[9] => z[4]) = 0; | 
 |         (a[10] => z[4]) = 0; | 
 |         (a[11] => z[4]) = 0; | 
 |         (a[12] => z[4]) = 0; | 
 |         (a[13] => z[4]) = 0; | 
 |         (a[14] => z[4]) = 0; | 
 |         (a[15] => z[4]) = 0; | 
 |         (a[16] => z[4]) = 0; | 
 |         (a[17] => z[4]) = 0; | 
 |         (a[18] => z[4]) = 0; | 
 |         (a[19] => z[4]) = 0; | 
 |         (b[0] => z[4]) = 0; | 
 |         (b[1] => z[4]) = 0; | 
 |         (b[2] => z[4]) = 0; | 
 |         (b[3] => z[4]) = 0; | 
 |         (b[4] => z[4]) = 0; | 
 |         (b[5] => z[4]) = 0; | 
 |         (b[6] => z[4]) = 0; | 
 |         (b[7] => z[4]) = 0; | 
 |         (b[8] => z[4]) = 0; | 
 |         (b[9] => z[4]) = 0; | 
 |         (b[10] => z[4]) = 0; | 
 |         (b[11] => z[4]) = 0; | 
 |         (b[12] => z[4]) = 0; | 
 |         (b[13] => z[4]) = 0; | 
 |         (b[14] => z[4]) = 0; | 
 |         (b[15] => z[4]) = 0; | 
 |         (b[16] => z[4]) = 0; | 
 |         (b[17] => z[4]) = 0; | 
 |         (a[0] => z[5]) = 0; | 
 |         (a[1] => z[5]) = 0; | 
 |         (a[2] => z[5]) = 0; | 
 |         (a[3] => z[5]) = 0; | 
 |         (a[4] => z[5]) = 0; | 
 |         (a[5] => z[5]) = 0; | 
 |         (a[6] => z[5]) = 0; | 
 |         (a[7] => z[5]) = 0; | 
 |         (a[8] => z[5]) = 0; | 
 |         (a[9] => z[5]) = 0; | 
 |         (a[10] => z[5]) = 0; | 
 |         (a[11] => z[5]) = 0; | 
 |         (a[12] => z[5]) = 0; | 
 |         (a[13] => z[5]) = 0; | 
 |         (a[14] => z[5]) = 0; | 
 |         (a[15] => z[5]) = 0; | 
 |         (a[16] => z[5]) = 0; | 
 |         (a[17] => z[5]) = 0; | 
 |         (a[18] => z[5]) = 0; | 
 |         (a[19] => z[5]) = 0; | 
 |         (b[0] => z[5]) = 0; | 
 |         (b[1] => z[5]) = 0; | 
 |         (b[2] => z[5]) = 0; | 
 |         (b[3] => z[5]) = 0; | 
 |         (b[4] => z[5]) = 0; | 
 |         (b[5] => z[5]) = 0; | 
 |         (b[6] => z[5]) = 0; | 
 |         (b[7] => z[5]) = 0; | 
 |         (b[8] => z[5]) = 0; | 
 |         (b[9] => z[5]) = 0; | 
 |         (b[10] => z[5]) = 0; | 
 |         (b[11] => z[5]) = 0; | 
 |         (b[12] => z[5]) = 0; | 
 |         (b[13] => z[5]) = 0; | 
 |         (b[14] => z[5]) = 0; | 
 |         (b[15] => z[5]) = 0; | 
 |         (b[16] => z[5]) = 0; | 
 |         (b[17] => z[5]) = 0; | 
 |         (a[0] => z[6]) = 0; | 
 |         (a[1] => z[6]) = 0; | 
 |         (a[2] => z[6]) = 0; | 
 |         (a[3] => z[6]) = 0; | 
 |         (a[4] => z[6]) = 0; | 
 |         (a[5] => z[6]) = 0; | 
 |         (a[6] => z[6]) = 0; | 
 |         (a[7] => z[6]) = 0; | 
 |         (a[8] => z[6]) = 0; | 
 |         (a[9] => z[6]) = 0; | 
 |         (a[10] => z[6]) = 0; | 
 |         (a[11] => z[6]) = 0; | 
 |         (a[12] => z[6]) = 0; | 
 |         (a[13] => z[6]) = 0; | 
 |         (a[14] => z[6]) = 0; | 
 |         (a[15] => z[6]) = 0; | 
 |         (a[16] => z[6]) = 0; | 
 |         (a[17] => z[6]) = 0; | 
 |         (a[18] => z[6]) = 0; | 
 |         (a[19] => z[6]) = 0; | 
 |         (b[0] => z[6]) = 0; | 
 |         (b[1] => z[6]) = 0; | 
 |         (b[2] => z[6]) = 0; | 
 |         (b[3] => z[6]) = 0; | 
 |         (b[4] => z[6]) = 0; | 
 |         (b[5] => z[6]) = 0; | 
 |         (b[6] => z[6]) = 0; | 
 |         (b[7] => z[6]) = 0; | 
 |         (b[8] => z[6]) = 0; | 
 |         (b[9] => z[6]) = 0; | 
 |         (b[10] => z[6]) = 0; | 
 |         (b[11] => z[6]) = 0; | 
 |         (b[12] => z[6]) = 0; | 
 |         (b[13] => z[6]) = 0; | 
 |         (b[14] => z[6]) = 0; | 
 |         (b[15] => z[6]) = 0; | 
 |         (b[16] => z[6]) = 0; | 
 |         (b[17] => z[6]) = 0; | 
 |         (a[0] => z[7]) = 0; | 
 |         (a[1] => z[7]) = 0; | 
 |         (a[2] => z[7]) = 0; | 
 |         (a[3] => z[7]) = 0; | 
 |         (a[4] => z[7]) = 0; | 
 |         (a[5] => z[7]) = 0; | 
 |         (a[6] => z[7]) = 0; | 
 |         (a[7] => z[7]) = 0; | 
 |         (a[8] => z[7]) = 0; | 
 |         (a[9] => z[7]) = 0; | 
 |         (a[10] => z[7]) = 0; | 
 |         (a[11] => z[7]) = 0; | 
 |         (a[12] => z[7]) = 0; | 
 |         (a[13] => z[7]) = 0; | 
 |         (a[14] => z[7]) = 0; | 
 |         (a[15] => z[7]) = 0; | 
 |         (a[16] => z[7]) = 0; | 
 |         (a[17] => z[7]) = 0; | 
 |         (a[18] => z[7]) = 0; | 
 |         (a[19] => z[7]) = 0; | 
 |         (b[0] => z[7]) = 0; | 
 |         (b[1] => z[7]) = 0; | 
 |         (b[2] => z[7]) = 0; | 
 |         (b[3] => z[7]) = 0; | 
 |         (b[4] => z[7]) = 0; | 
 |         (b[5] => z[7]) = 0; | 
 |         (b[6] => z[7]) = 0; | 
 |         (b[7] => z[7]) = 0; | 
 |         (b[8] => z[7]) = 0; | 
 |         (b[9] => z[7]) = 0; | 
 |         (b[10] => z[7]) = 0; | 
 |         (b[11] => z[7]) = 0; | 
 |         (b[12] => z[7]) = 0; | 
 |         (b[13] => z[7]) = 0; | 
 |         (b[14] => z[7]) = 0; | 
 |         (b[15] => z[7]) = 0; | 
 |         (b[16] => z[7]) = 0; | 
 |         (b[17] => z[7]) = 0; | 
 |         (a[0] => z[8]) = 0; | 
 |         (a[1] => z[8]) = 0; | 
 |         (a[2] => z[8]) = 0; | 
 |         (a[3] => z[8]) = 0; | 
 |         (a[4] => z[8]) = 0; | 
 |         (a[5] => z[8]) = 0; | 
 |         (a[6] => z[8]) = 0; | 
 |         (a[7] => z[8]) = 0; | 
 |         (a[8] => z[8]) = 0; | 
 |         (a[9] => z[8]) = 0; | 
 |         (a[10] => z[8]) = 0; | 
 |         (a[11] => z[8]) = 0; | 
 |         (a[12] => z[8]) = 0; | 
 |         (a[13] => z[8]) = 0; | 
 |         (a[14] => z[8]) = 0; | 
 |         (a[15] => z[8]) = 0; | 
 |         (a[16] => z[8]) = 0; | 
 |         (a[17] => z[8]) = 0; | 
 |         (a[18] => z[8]) = 0; | 
 |         (a[19] => z[8]) = 0; | 
 |         (b[0] => z[8]) = 0; | 
 |         (b[1] => z[8]) = 0; | 
 |         (b[2] => z[8]) = 0; | 
 |         (b[3] => z[8]) = 0; | 
 |         (b[4] => z[8]) = 0; | 
 |         (b[5] => z[8]) = 0; | 
 |         (b[6] => z[8]) = 0; | 
 |         (b[7] => z[8]) = 0; | 
 |         (b[8] => z[8]) = 0; | 
 |         (b[9] => z[8]) = 0; | 
 |         (b[10] => z[8]) = 0; | 
 |         (b[11] => z[8]) = 0; | 
 |         (b[12] => z[8]) = 0; | 
 |         (b[13] => z[8]) = 0; | 
 |         (b[14] => z[8]) = 0; | 
 |         (b[15] => z[8]) = 0; | 
 |         (b[16] => z[8]) = 0; | 
 |         (b[17] => z[8]) = 0; | 
 |         (a[0] => z[9]) = 0; | 
 |         (a[1] => z[9]) = 0; | 
 |         (a[2] => z[9]) = 0; | 
 |         (a[3] => z[9]) = 0; | 
 |         (a[4] => z[9]) = 0; | 
 |         (a[5] => z[9]) = 0; | 
 |         (a[6] => z[9]) = 0; | 
 |         (a[7] => z[9]) = 0; | 
 |         (a[8] => z[9]) = 0; | 
 |         (a[9] => z[9]) = 0; | 
 |         (a[10] => z[9]) = 0; | 
 |         (a[11] => z[9]) = 0; | 
 |         (a[12] => z[9]) = 0; | 
 |         (a[13] => z[9]) = 0; | 
 |         (a[14] => z[9]) = 0; | 
 |         (a[15] => z[9]) = 0; | 
 |         (a[16] => z[9]) = 0; | 
 |         (a[17] => z[9]) = 0; | 
 |         (a[18] => z[9]) = 0; | 
 |         (a[19] => z[9]) = 0; | 
 |         (b[0] => z[9]) = 0; | 
 |         (b[1] => z[9]) = 0; | 
 |         (b[2] => z[9]) = 0; | 
 |         (b[3] => z[9]) = 0; | 
 |         (b[4] => z[9]) = 0; | 
 |         (b[5] => z[9]) = 0; | 
 |         (b[6] => z[9]) = 0; | 
 |         (b[7] => z[9]) = 0; | 
 |         (b[8] => z[9]) = 0; | 
 |         (b[9] => z[9]) = 0; | 
 |         (b[10] => z[9]) = 0; | 
 |         (b[11] => z[9]) = 0; | 
 |         (b[12] => z[9]) = 0; | 
 |         (b[13] => z[9]) = 0; | 
 |         (b[14] => z[9]) = 0; | 
 |         (b[15] => z[9]) = 0; | 
 |         (b[16] => z[9]) = 0; | 
 |         (b[17] => z[9]) = 0; | 
 |         (a[0] => z[10]) = 0; | 
 |         (a[1] => z[10]) = 0; | 
 |         (a[2] => z[10]) = 0; | 
 |         (a[3] => z[10]) = 0; | 
 |         (a[4] => z[10]) = 0; | 
 |         (a[5] => z[10]) = 0; | 
 |         (a[6] => z[10]) = 0; | 
 |         (a[7] => z[10]) = 0; | 
 |         (a[8] => z[10]) = 0; | 
 |         (a[9] => z[10]) = 0; | 
 |         (a[10] => z[10]) = 0; | 
 |         (a[11] => z[10]) = 0; | 
 |         (a[12] => z[10]) = 0; | 
 |         (a[13] => z[10]) = 0; | 
 |         (a[14] => z[10]) = 0; | 
 |         (a[15] => z[10]) = 0; | 
 |         (a[16] => z[10]) = 0; | 
 |         (a[17] => z[10]) = 0; | 
 |         (a[18] => z[10]) = 0; | 
 |         (a[19] => z[10]) = 0; | 
 |         (b[0] => z[10]) = 0; | 
 |         (b[1] => z[10]) = 0; | 
 |         (b[2] => z[10]) = 0; | 
 |         (b[3] => z[10]) = 0; | 
 |         (b[4] => z[10]) = 0; | 
 |         (b[5] => z[10]) = 0; | 
 |         (b[6] => z[10]) = 0; | 
 |         (b[7] => z[10]) = 0; | 
 |         (b[8] => z[10]) = 0; | 
 |         (b[9] => z[10]) = 0; | 
 |         (b[10] => z[10]) = 0; | 
 |         (b[11] => z[10]) = 0; | 
 |         (b[12] => z[10]) = 0; | 
 |         (b[13] => z[10]) = 0; | 
 |         (b[14] => z[10]) = 0; | 
 |         (b[15] => z[10]) = 0; | 
 |         (b[16] => z[10]) = 0; | 
 |         (b[17] => z[10]) = 0; | 
 |         (a[0] => z[11]) = 0; | 
 |         (a[1] => z[11]) = 0; | 
 |         (a[2] => z[11]) = 0; | 
 |         (a[3] => z[11]) = 0; | 
 |         (a[4] => z[11]) = 0; | 
 |         (a[5] => z[11]) = 0; | 
 |         (a[6] => z[11]) = 0; | 
 |         (a[7] => z[11]) = 0; | 
 |         (a[8] => z[11]) = 0; | 
 |         (a[9] => z[11]) = 0; | 
 |         (a[10] => z[11]) = 0; | 
 |         (a[11] => z[11]) = 0; | 
 |         (a[12] => z[11]) = 0; | 
 |         (a[13] => z[11]) = 0; | 
 |         (a[14] => z[11]) = 0; | 
 |         (a[15] => z[11]) = 0; | 
 |         (a[16] => z[11]) = 0; | 
 |         (a[17] => z[11]) = 0; | 
 |         (a[18] => z[11]) = 0; | 
 |         (a[19] => z[11]) = 0; | 
 |         (b[0] => z[11]) = 0; | 
 |         (b[1] => z[11]) = 0; | 
 |         (b[2] => z[11]) = 0; | 
 |         (b[3] => z[11]) = 0; | 
 |         (b[4] => z[11]) = 0; | 
 |         (b[5] => z[11]) = 0; | 
 |         (b[6] => z[11]) = 0; | 
 |         (b[7] => z[11]) = 0; | 
 |         (b[8] => z[11]) = 0; | 
 |         (b[9] => z[11]) = 0; | 
 |         (b[10] => z[11]) = 0; | 
 |         (b[11] => z[11]) = 0; | 
 |         (b[12] => z[11]) = 0; | 
 |         (b[13] => z[11]) = 0; | 
 |         (b[14] => z[11]) = 0; | 
 |         (b[15] => z[11]) = 0; | 
 |         (b[16] => z[11]) = 0; | 
 |         (b[17] => z[11]) = 0; | 
 |         (a[0] => z[12]) = 0; | 
 |         (a[1] => z[12]) = 0; | 
 |         (a[2] => z[12]) = 0; | 
 |         (a[3] => z[12]) = 0; | 
 |         (a[4] => z[12]) = 0; | 
 |         (a[5] => z[12]) = 0; | 
 |         (a[6] => z[12]) = 0; | 
 |         (a[7] => z[12]) = 0; | 
 |         (a[8] => z[12]) = 0; | 
 |         (a[9] => z[12]) = 0; | 
 |         (a[10] => z[12]) = 0; | 
 |         (a[11] => z[12]) = 0; | 
 |         (a[12] => z[12]) = 0; | 
 |         (a[13] => z[12]) = 0; | 
 |         (a[14] => z[12]) = 0; | 
 |         (a[15] => z[12]) = 0; | 
 |         (a[16] => z[12]) = 0; | 
 |         (a[17] => z[12]) = 0; | 
 |         (a[18] => z[12]) = 0; | 
 |         (a[19] => z[12]) = 0; | 
 |         (b[0] => z[12]) = 0; | 
 |         (b[1] => z[12]) = 0; | 
 |         (b[2] => z[12]) = 0; | 
 |         (b[3] => z[12]) = 0; | 
 |         (b[4] => z[12]) = 0; | 
 |         (b[5] => z[12]) = 0; | 
 |         (b[6] => z[12]) = 0; | 
 |         (b[7] => z[12]) = 0; | 
 |         (b[8] => z[12]) = 0; | 
 |         (b[9] => z[12]) = 0; | 
 |         (b[10] => z[12]) = 0; | 
 |         (b[11] => z[12]) = 0; | 
 |         (b[12] => z[12]) = 0; | 
 |         (b[13] => z[12]) = 0; | 
 |         (b[14] => z[12]) = 0; | 
 |         (b[15] => z[12]) = 0; | 
 |         (b[16] => z[12]) = 0; | 
 |         (b[17] => z[12]) = 0; | 
 |         (a[0] => z[13]) = 0; | 
 |         (a[1] => z[13]) = 0; | 
 |         (a[2] => z[13]) = 0; | 
 |         (a[3] => z[13]) = 0; | 
 |         (a[4] => z[13]) = 0; | 
 |         (a[5] => z[13]) = 0; | 
 |         (a[6] => z[13]) = 0; | 
 |         (a[7] => z[13]) = 0; | 
 |         (a[8] => z[13]) = 0; | 
 |         (a[9] => z[13]) = 0; | 
 |         (a[10] => z[13]) = 0; | 
 |         (a[11] => z[13]) = 0; | 
 |         (a[12] => z[13]) = 0; | 
 |         (a[13] => z[13]) = 0; | 
 |         (a[14] => z[13]) = 0; | 
 |         (a[15] => z[13]) = 0; | 
 |         (a[16] => z[13]) = 0; | 
 |         (a[17] => z[13]) = 0; | 
 |         (a[18] => z[13]) = 0; | 
 |         (a[19] => z[13]) = 0; | 
 |         (b[0] => z[13]) = 0; | 
 |         (b[1] => z[13]) = 0; | 
 |         (b[2] => z[13]) = 0; | 
 |         (b[3] => z[13]) = 0; | 
 |         (b[4] => z[13]) = 0; | 
 |         (b[5] => z[13]) = 0; | 
 |         (b[6] => z[13]) = 0; | 
 |         (b[7] => z[13]) = 0; | 
 |         (b[8] => z[13]) = 0; | 
 |         (b[9] => z[13]) = 0; | 
 |         (b[10] => z[13]) = 0; | 
 |         (b[11] => z[13]) = 0; | 
 |         (b[12] => z[13]) = 0; | 
 |         (b[13] => z[13]) = 0; | 
 |         (b[14] => z[13]) = 0; | 
 |         (b[15] => z[13]) = 0; | 
 |         (b[16] => z[13]) = 0; | 
 |         (b[17] => z[13]) = 0; | 
 |         (a[0] => z[14]) = 0; | 
 |         (a[1] => z[14]) = 0; | 
 |         (a[2] => z[14]) = 0; | 
 |         (a[3] => z[14]) = 0; | 
 |         (a[4] => z[14]) = 0; | 
 |         (a[5] => z[14]) = 0; | 
 |         (a[6] => z[14]) = 0; | 
 |         (a[7] => z[14]) = 0; | 
 |         (a[8] => z[14]) = 0; | 
 |         (a[9] => z[14]) = 0; | 
 |         (a[10] => z[14]) = 0; | 
 |         (a[11] => z[14]) = 0; | 
 |         (a[12] => z[14]) = 0; | 
 |         (a[13] => z[14]) = 0; | 
 |         (a[14] => z[14]) = 0; | 
 |         (a[15] => z[14]) = 0; | 
 |         (a[16] => z[14]) = 0; | 
 |         (a[17] => z[14]) = 0; | 
 |         (a[18] => z[14]) = 0; | 
 |         (a[19] => z[14]) = 0; | 
 |         (b[0] => z[14]) = 0; | 
 |         (b[1] => z[14]) = 0; | 
 |         (b[2] => z[14]) = 0; | 
 |         (b[3] => z[14]) = 0; | 
 |         (b[4] => z[14]) = 0; | 
 |         (b[5] => z[14]) = 0; | 
 |         (b[6] => z[14]) = 0; | 
 |         (b[7] => z[14]) = 0; | 
 |         (b[8] => z[14]) = 0; | 
 |         (b[9] => z[14]) = 0; | 
 |         (b[10] => z[14]) = 0; | 
 |         (b[11] => z[14]) = 0; | 
 |         (b[12] => z[14]) = 0; | 
 |         (b[13] => z[14]) = 0; | 
 |         (b[14] => z[14]) = 0; | 
 |         (b[15] => z[14]) = 0; | 
 |         (b[16] => z[14]) = 0; | 
 |         (b[17] => z[14]) = 0; | 
 |         (a[0] => z[15]) = 0; | 
 |         (a[1] => z[15]) = 0; | 
 |         (a[2] => z[15]) = 0; | 
 |         (a[3] => z[15]) = 0; | 
 |         (a[4] => z[15]) = 0; | 
 |         (a[5] => z[15]) = 0; | 
 |         (a[6] => z[15]) = 0; | 
 |         (a[7] => z[15]) = 0; | 
 |         (a[8] => z[15]) = 0; | 
 |         (a[9] => z[15]) = 0; | 
 |         (a[10] => z[15]) = 0; | 
 |         (a[11] => z[15]) = 0; | 
 |         (a[12] => z[15]) = 0; | 
 |         (a[13] => z[15]) = 0; | 
 |         (a[14] => z[15]) = 0; | 
 |         (a[15] => z[15]) = 0; | 
 |         (a[16] => z[15]) = 0; | 
 |         (a[17] => z[15]) = 0; | 
 |         (a[18] => z[15]) = 0; | 
 |         (a[19] => z[15]) = 0; | 
 |         (b[0] => z[15]) = 0; | 
 |         (b[1] => z[15]) = 0; | 
 |         (b[2] => z[15]) = 0; | 
 |         (b[3] => z[15]) = 0; | 
 |         (b[4] => z[15]) = 0; | 
 |         (b[5] => z[15]) = 0; | 
 |         (b[6] => z[15]) = 0; | 
 |         (b[7] => z[15]) = 0; | 
 |         (b[8] => z[15]) = 0; | 
 |         (b[9] => z[15]) = 0; | 
 |         (b[10] => z[15]) = 0; | 
 |         (b[11] => z[15]) = 0; | 
 |         (b[12] => z[15]) = 0; | 
 |         (b[13] => z[15]) = 0; | 
 |         (b[14] => z[15]) = 0; | 
 |         (b[15] => z[15]) = 0; | 
 |         (b[16] => z[15]) = 0; | 
 |         (b[17] => z[15]) = 0; | 
 |         (a[0] => z[16]) = 0; | 
 |         (a[1] => z[16]) = 0; | 
 |         (a[2] => z[16]) = 0; | 
 |         (a[3] => z[16]) = 0; | 
 |         (a[4] => z[16]) = 0; | 
 |         (a[5] => z[16]) = 0; | 
 |         (a[6] => z[16]) = 0; | 
 |         (a[7] => z[16]) = 0; | 
 |         (a[8] => z[16]) = 0; | 
 |         (a[9] => z[16]) = 0; | 
 |         (a[10] => z[16]) = 0; | 
 |         (a[11] => z[16]) = 0; | 
 |         (a[12] => z[16]) = 0; | 
 |         (a[13] => z[16]) = 0; | 
 |         (a[14] => z[16]) = 0; | 
 |         (a[15] => z[16]) = 0; | 
 |         (a[16] => z[16]) = 0; | 
 |         (a[17] => z[16]) = 0; | 
 |         (a[18] => z[16]) = 0; | 
 |         (a[19] => z[16]) = 0; | 
 |         (b[0] => z[16]) = 0; | 
 |         (b[1] => z[16]) = 0; | 
 |         (b[2] => z[16]) = 0; | 
 |         (b[3] => z[16]) = 0; | 
 |         (b[4] => z[16]) = 0; | 
 |         (b[5] => z[16]) = 0; | 
 |         (b[6] => z[16]) = 0; | 
 |         (b[7] => z[16]) = 0; | 
 |         (b[8] => z[16]) = 0; | 
 |         (b[9] => z[16]) = 0; | 
 |         (b[10] => z[16]) = 0; | 
 |         (b[11] => z[16]) = 0; | 
 |         (b[12] => z[16]) = 0; | 
 |         (b[13] => z[16]) = 0; | 
 |         (b[14] => z[16]) = 0; | 
 |         (b[15] => z[16]) = 0; | 
 |         (b[16] => z[16]) = 0; | 
 |         (b[17] => z[16]) = 0; | 
 |         (a[0] => z[17]) = 0; | 
 |         (a[1] => z[17]) = 0; | 
 |         (a[2] => z[17]) = 0; | 
 |         (a[3] => z[17]) = 0; | 
 |         (a[4] => z[17]) = 0; | 
 |         (a[5] => z[17]) = 0; | 
 |         (a[6] => z[17]) = 0; | 
 |         (a[7] => z[17]) = 0; | 
 |         (a[8] => z[17]) = 0; | 
 |         (a[9] => z[17]) = 0; | 
 |         (a[10] => z[17]) = 0; | 
 |         (a[11] => z[17]) = 0; | 
 |         (a[12] => z[17]) = 0; | 
 |         (a[13] => z[17]) = 0; | 
 |         (a[14] => z[17]) = 0; | 
 |         (a[15] => z[17]) = 0; | 
 |         (a[16] => z[17]) = 0; | 
 |         (a[17] => z[17]) = 0; | 
 |         (a[18] => z[17]) = 0; | 
 |         (a[19] => z[17]) = 0; | 
 |         (b[0] => z[17]) = 0; | 
 |         (b[1] => z[17]) = 0; | 
 |         (b[2] => z[17]) = 0; | 
 |         (b[3] => z[17]) = 0; | 
 |         (b[4] => z[17]) = 0; | 
 |         (b[5] => z[17]) = 0; | 
 |         (b[6] => z[17]) = 0; | 
 |         (b[7] => z[17]) = 0; | 
 |         (b[8] => z[17]) = 0; | 
 |         (b[9] => z[17]) = 0; | 
 |         (b[10] => z[17]) = 0; | 
 |         (b[11] => z[17]) = 0; | 
 |         (b[12] => z[17]) = 0; | 
 |         (b[13] => z[17]) = 0; | 
 |         (b[14] => z[17]) = 0; | 
 |         (b[15] => z[17]) = 0; | 
 |         (b[16] => z[17]) = 0; | 
 |         (b[17] => z[17]) = 0; | 
 |         (a[0] => z[18]) = 0; | 
 |         (a[1] => z[18]) = 0; | 
 |         (a[2] => z[18]) = 0; | 
 |         (a[3] => z[18]) = 0; | 
 |         (a[4] => z[18]) = 0; | 
 |         (a[5] => z[18]) = 0; | 
 |         (a[6] => z[18]) = 0; | 
 |         (a[7] => z[18]) = 0; | 
 |         (a[8] => z[18]) = 0; | 
 |         (a[9] => z[18]) = 0; | 
 |         (a[10] => z[18]) = 0; | 
 |         (a[11] => z[18]) = 0; | 
 |         (a[12] => z[18]) = 0; | 
 |         (a[13] => z[18]) = 0; | 
 |         (a[14] => z[18]) = 0; | 
 |         (a[15] => z[18]) = 0; | 
 |         (a[16] => z[18]) = 0; | 
 |         (a[17] => z[18]) = 0; | 
 |         (a[18] => z[18]) = 0; | 
 |         (a[19] => z[18]) = 0; | 
 |         (b[0] => z[18]) = 0; | 
 |         (b[1] => z[18]) = 0; | 
 |         (b[2] => z[18]) = 0; | 
 |         (b[3] => z[18]) = 0; | 
 |         (b[4] => z[18]) = 0; | 
 |         (b[5] => z[18]) = 0; | 
 |         (b[6] => z[18]) = 0; | 
 |         (b[7] => z[18]) = 0; | 
 |         (b[8] => z[18]) = 0; | 
 |         (b[9] => z[18]) = 0; | 
 |         (b[10] => z[18]) = 0; | 
 |         (b[11] => z[18]) = 0; | 
 |         (b[12] => z[18]) = 0; | 
 |         (b[13] => z[18]) = 0; | 
 |         (b[14] => z[18]) = 0; | 
 |         (b[15] => z[18]) = 0; | 
 |         (b[16] => z[18]) = 0; | 
 |         (b[17] => z[18]) = 0; | 
 |         (a[0] => z[19]) = 0; | 
 |         (a[1] => z[19]) = 0; | 
 |         (a[2] => z[19]) = 0; | 
 |         (a[3] => z[19]) = 0; | 
 |         (a[4] => z[19]) = 0; | 
 |         (a[5] => z[19]) = 0; | 
 |         (a[6] => z[19]) = 0; | 
 |         (a[7] => z[19]) = 0; | 
 |         (a[8] => z[19]) = 0; | 
 |         (a[9] => z[19]) = 0; | 
 |         (a[10] => z[19]) = 0; | 
 |         (a[11] => z[19]) = 0; | 
 |         (a[12] => z[19]) = 0; | 
 |         (a[13] => z[19]) = 0; | 
 |         (a[14] => z[19]) = 0; | 
 |         (a[15] => z[19]) = 0; | 
 |         (a[16] => z[19]) = 0; | 
 |         (a[17] => z[19]) = 0; | 
 |         (a[18] => z[19]) = 0; | 
 |         (a[19] => z[19]) = 0; | 
 |         (b[0] => z[19]) = 0; | 
 |         (b[1] => z[19]) = 0; | 
 |         (b[2] => z[19]) = 0; | 
 |         (b[3] => z[19]) = 0; | 
 |         (b[4] => z[19]) = 0; | 
 |         (b[5] => z[19]) = 0; | 
 |         (b[6] => z[19]) = 0; | 
 |         (b[7] => z[19]) = 0; | 
 |         (b[8] => z[19]) = 0; | 
 |         (b[9] => z[19]) = 0; | 
 |         (b[10] => z[19]) = 0; | 
 |         (b[11] => z[19]) = 0; | 
 |         (b[12] => z[19]) = 0; | 
 |         (b[13] => z[19]) = 0; | 
 |         (b[14] => z[19]) = 0; | 
 |         (b[15] => z[19]) = 0; | 
 |         (b[16] => z[19]) = 0; | 
 |         (b[17] => z[19]) = 0; | 
 |         (a[0] => z[20]) = 0; | 
 |         (a[1] => z[20]) = 0; | 
 |         (a[2] => z[20]) = 0; | 
 |         (a[3] => z[20]) = 0; | 
 |         (a[4] => z[20]) = 0; | 
 |         (a[5] => z[20]) = 0; | 
 |         (a[6] => z[20]) = 0; | 
 |         (a[7] => z[20]) = 0; | 
 |         (a[8] => z[20]) = 0; | 
 |         (a[9] => z[20]) = 0; | 
 |         (a[10] => z[20]) = 0; | 
 |         (a[11] => z[20]) = 0; | 
 |         (a[12] => z[20]) = 0; | 
 |         (a[13] => z[20]) = 0; | 
 |         (a[14] => z[20]) = 0; | 
 |         (a[15] => z[20]) = 0; | 
 |         (a[16] => z[20]) = 0; | 
 |         (a[17] => z[20]) = 0; | 
 |         (a[18] => z[20]) = 0; | 
 |         (a[19] => z[20]) = 0; | 
 |         (b[0] => z[20]) = 0; | 
 |         (b[1] => z[20]) = 0; | 
 |         (b[2] => z[20]) = 0; | 
 |         (b[3] => z[20]) = 0; | 
 |         (b[4] => z[20]) = 0; | 
 |         (b[5] => z[20]) = 0; | 
 |         (b[6] => z[20]) = 0; | 
 |         (b[7] => z[20]) = 0; | 
 |         (b[8] => z[20]) = 0; | 
 |         (b[9] => z[20]) = 0; | 
 |         (b[10] => z[20]) = 0; | 
 |         (b[11] => z[20]) = 0; | 
 |         (b[12] => z[20]) = 0; | 
 |         (b[13] => z[20]) = 0; | 
 |         (b[14] => z[20]) = 0; | 
 |         (b[15] => z[20]) = 0; | 
 |         (b[16] => z[20]) = 0; | 
 |         (b[17] => z[20]) = 0; | 
 |         (a[0] => z[21]) = 0; | 
 |         (a[1] => z[21]) = 0; | 
 |         (a[2] => z[21]) = 0; | 
 |         (a[3] => z[21]) = 0; | 
 |         (a[4] => z[21]) = 0; | 
 |         (a[5] => z[21]) = 0; | 
 |         (a[6] => z[21]) = 0; | 
 |         (a[7] => z[21]) = 0; | 
 |         (a[8] => z[21]) = 0; | 
 |         (a[9] => z[21]) = 0; | 
 |         (a[10] => z[21]) = 0; | 
 |         (a[11] => z[21]) = 0; | 
 |         (a[12] => z[21]) = 0; | 
 |         (a[13] => z[21]) = 0; | 
 |         (a[14] => z[21]) = 0; | 
 |         (a[15] => z[21]) = 0; | 
 |         (a[16] => z[21]) = 0; | 
 |         (a[17] => z[21]) = 0; | 
 |         (a[18] => z[21]) = 0; | 
 |         (a[19] => z[21]) = 0; | 
 |         (b[0] => z[21]) = 0; | 
 |         (b[1] => z[21]) = 0; | 
 |         (b[2] => z[21]) = 0; | 
 |         (b[3] => z[21]) = 0; | 
 |         (b[4] => z[21]) = 0; | 
 |         (b[5] => z[21]) = 0; | 
 |         (b[6] => z[21]) = 0; | 
 |         (b[7] => z[21]) = 0; | 
 |         (b[8] => z[21]) = 0; | 
 |         (b[9] => z[21]) = 0; | 
 |         (b[10] => z[21]) = 0; | 
 |         (b[11] => z[21]) = 0; | 
 |         (b[12] => z[21]) = 0; | 
 |         (b[13] => z[21]) = 0; | 
 |         (b[14] => z[21]) = 0; | 
 |         (b[15] => z[21]) = 0; | 
 |         (b[16] => z[21]) = 0; | 
 |         (b[17] => z[21]) = 0; | 
 |         (a[0] => z[22]) = 0; | 
 |         (a[1] => z[22]) = 0; | 
 |         (a[2] => z[22]) = 0; | 
 |         (a[3] => z[22]) = 0; | 
 |         (a[4] => z[22]) = 0; | 
 |         (a[5] => z[22]) = 0; | 
 |         (a[6] => z[22]) = 0; | 
 |         (a[7] => z[22]) = 0; | 
 |         (a[8] => z[22]) = 0; | 
 |         (a[9] => z[22]) = 0; | 
 |         (a[10] => z[22]) = 0; | 
 |         (a[11] => z[22]) = 0; | 
 |         (a[12] => z[22]) = 0; | 
 |         (a[13] => z[22]) = 0; | 
 |         (a[14] => z[22]) = 0; | 
 |         (a[15] => z[22]) = 0; | 
 |         (a[16] => z[22]) = 0; | 
 |         (a[17] => z[22]) = 0; | 
 |         (a[18] => z[22]) = 0; | 
 |         (a[19] => z[22]) = 0; | 
 |         (b[0] => z[22]) = 0; | 
 |         (b[1] => z[22]) = 0; | 
 |         (b[2] => z[22]) = 0; | 
 |         (b[3] => z[22]) = 0; | 
 |         (b[4] => z[22]) = 0; | 
 |         (b[5] => z[22]) = 0; | 
 |         (b[6] => z[22]) = 0; | 
 |         (b[7] => z[22]) = 0; | 
 |         (b[8] => z[22]) = 0; | 
 |         (b[9] => z[22]) = 0; | 
 |         (b[10] => z[22]) = 0; | 
 |         (b[11] => z[22]) = 0; | 
 |         (b[12] => z[22]) = 0; | 
 |         (b[13] => z[22]) = 0; | 
 |         (b[14] => z[22]) = 0; | 
 |         (b[15] => z[22]) = 0; | 
 |         (b[16] => z[22]) = 0; | 
 |         (b[17] => z[22]) = 0; | 
 |         (a[0] => z[23]) = 0; | 
 |         (a[1] => z[23]) = 0; | 
 |         (a[2] => z[23]) = 0; | 
 |         (a[3] => z[23]) = 0; | 
 |         (a[4] => z[23]) = 0; | 
 |         (a[5] => z[23]) = 0; | 
 |         (a[6] => z[23]) = 0; | 
 |         (a[7] => z[23]) = 0; | 
 |         (a[8] => z[23]) = 0; | 
 |         (a[9] => z[23]) = 0; | 
 |         (a[10] => z[23]) = 0; | 
 |         (a[11] => z[23]) = 0; | 
 |         (a[12] => z[23]) = 0; | 
 |         (a[13] => z[23]) = 0; | 
 |         (a[14] => z[23]) = 0; | 
 |         (a[15] => z[23]) = 0; | 
 |         (a[16] => z[23]) = 0; | 
 |         (a[17] => z[23]) = 0; | 
 |         (a[18] => z[23]) = 0; | 
 |         (a[19] => z[23]) = 0; | 
 |         (b[0] => z[23]) = 0; | 
 |         (b[1] => z[23]) = 0; | 
 |         (b[2] => z[23]) = 0; | 
 |         (b[3] => z[23]) = 0; | 
 |         (b[4] => z[23]) = 0; | 
 |         (b[5] => z[23]) = 0; | 
 |         (b[6] => z[23]) = 0; | 
 |         (b[7] => z[23]) = 0; | 
 |         (b[8] => z[23]) = 0; | 
 |         (b[9] => z[23]) = 0; | 
 |         (b[10] => z[23]) = 0; | 
 |         (b[11] => z[23]) = 0; | 
 |         (b[12] => z[23]) = 0; | 
 |         (b[13] => z[23]) = 0; | 
 |         (b[14] => z[23]) = 0; | 
 |         (b[15] => z[23]) = 0; | 
 |         (b[16] => z[23]) = 0; | 
 |         (b[17] => z[23]) = 0; | 
 |         (a[0] => z[24]) = 0; | 
 |         (a[1] => z[24]) = 0; | 
 |         (a[2] => z[24]) = 0; | 
 |         (a[3] => z[24]) = 0; | 
 |         (a[4] => z[24]) = 0; | 
 |         (a[5] => z[24]) = 0; | 
 |         (a[6] => z[24]) = 0; | 
 |         (a[7] => z[24]) = 0; | 
 |         (a[8] => z[24]) = 0; | 
 |         (a[9] => z[24]) = 0; | 
 |         (a[10] => z[24]) = 0; | 
 |         (a[11] => z[24]) = 0; | 
 |         (a[12] => z[24]) = 0; | 
 |         (a[13] => z[24]) = 0; | 
 |         (a[14] => z[24]) = 0; | 
 |         (a[15] => z[24]) = 0; | 
 |         (a[16] => z[24]) = 0; | 
 |         (a[17] => z[24]) = 0; | 
 |         (a[18] => z[24]) = 0; | 
 |         (a[19] => z[24]) = 0; | 
 |         (b[0] => z[24]) = 0; | 
 |         (b[1] => z[24]) = 0; | 
 |         (b[2] => z[24]) = 0; | 
 |         (b[3] => z[24]) = 0; | 
 |         (b[4] => z[24]) = 0; | 
 |         (b[5] => z[24]) = 0; | 
 |         (b[6] => z[24]) = 0; | 
 |         (b[7] => z[24]) = 0; | 
 |         (b[8] => z[24]) = 0; | 
 |         (b[9] => z[24]) = 0; | 
 |         (b[10] => z[24]) = 0; | 
 |         (b[11] => z[24]) = 0; | 
 |         (b[12] => z[24]) = 0; | 
 |         (b[13] => z[24]) = 0; | 
 |         (b[14] => z[24]) = 0; | 
 |         (b[15] => z[24]) = 0; | 
 |         (b[16] => z[24]) = 0; | 
 |         (b[17] => z[24]) = 0; | 
 |         (a[0] => z[25]) = 0; | 
 |         (a[1] => z[25]) = 0; | 
 |         (a[2] => z[25]) = 0; | 
 |         (a[3] => z[25]) = 0; | 
 |         (a[4] => z[25]) = 0; | 
 |         (a[5] => z[25]) = 0; | 
 |         (a[6] => z[25]) = 0; | 
 |         (a[7] => z[25]) = 0; | 
 |         (a[8] => z[25]) = 0; | 
 |         (a[9] => z[25]) = 0; | 
 |         (a[10] => z[25]) = 0; | 
 |         (a[11] => z[25]) = 0; | 
 |         (a[12] => z[25]) = 0; | 
 |         (a[13] => z[25]) = 0; | 
 |         (a[14] => z[25]) = 0; | 
 |         (a[15] => z[25]) = 0; | 
 |         (a[16] => z[25]) = 0; | 
 |         (a[17] => z[25]) = 0; | 
 |         (a[18] => z[25]) = 0; | 
 |         (a[19] => z[25]) = 0; | 
 |         (b[0] => z[25]) = 0; | 
 |         (b[1] => z[25]) = 0; | 
 |         (b[2] => z[25]) = 0; | 
 |         (b[3] => z[25]) = 0; | 
 |         (b[4] => z[25]) = 0; | 
 |         (b[5] => z[25]) = 0; | 
 |         (b[6] => z[25]) = 0; | 
 |         (b[7] => z[25]) = 0; | 
 |         (b[8] => z[25]) = 0; | 
 |         (b[9] => z[25]) = 0; | 
 |         (b[10] => z[25]) = 0; | 
 |         (b[11] => z[25]) = 0; | 
 |         (b[12] => z[25]) = 0; | 
 |         (b[13] => z[25]) = 0; | 
 |         (b[14] => z[25]) = 0; | 
 |         (b[15] => z[25]) = 0; | 
 |         (b[16] => z[25]) = 0; | 
 |         (b[17] => z[25]) = 0; | 
 |         (a[0] => z[26]) = 0; | 
 |         (a[1] => z[26]) = 0; | 
 |         (a[2] => z[26]) = 0; | 
 |         (a[3] => z[26]) = 0; | 
 |         (a[4] => z[26]) = 0; | 
 |         (a[5] => z[26]) = 0; | 
 |         (a[6] => z[26]) = 0; | 
 |         (a[7] => z[26]) = 0; | 
 |         (a[8] => z[26]) = 0; | 
 |         (a[9] => z[26]) = 0; | 
 |         (a[10] => z[26]) = 0; | 
 |         (a[11] => z[26]) = 0; | 
 |         (a[12] => z[26]) = 0; | 
 |         (a[13] => z[26]) = 0; | 
 |         (a[14] => z[26]) = 0; | 
 |         (a[15] => z[26]) = 0; | 
 |         (a[16] => z[26]) = 0; | 
 |         (a[17] => z[26]) = 0; | 
 |         (a[18] => z[26]) = 0; | 
 |         (a[19] => z[26]) = 0; | 
 |         (b[0] => z[26]) = 0; | 
 |         (b[1] => z[26]) = 0; | 
 |         (b[2] => z[26]) = 0; | 
 |         (b[3] => z[26]) = 0; | 
 |         (b[4] => z[26]) = 0; | 
 |         (b[5] => z[26]) = 0; | 
 |         (b[6] => z[26]) = 0; | 
 |         (b[7] => z[26]) = 0; | 
 |         (b[8] => z[26]) = 0; | 
 |         (b[9] => z[26]) = 0; | 
 |         (b[10] => z[26]) = 0; | 
 |         (b[11] => z[26]) = 0; | 
 |         (b[12] => z[26]) = 0; | 
 |         (b[13] => z[26]) = 0; | 
 |         (b[14] => z[26]) = 0; | 
 |         (b[15] => z[26]) = 0; | 
 |         (b[16] => z[26]) = 0; | 
 |         (b[17] => z[26]) = 0; | 
 |         (a[0] => z[27]) = 0; | 
 |         (a[1] => z[27]) = 0; | 
 |         (a[2] => z[27]) = 0; | 
 |         (a[3] => z[27]) = 0; | 
 |         (a[4] => z[27]) = 0; | 
 |         (a[5] => z[27]) = 0; | 
 |         (a[6] => z[27]) = 0; | 
 |         (a[7] => z[27]) = 0; | 
 |         (a[8] => z[27]) = 0; | 
 |         (a[9] => z[27]) = 0; | 
 |         (a[10] => z[27]) = 0; | 
 |         (a[11] => z[27]) = 0; | 
 |         (a[12] => z[27]) = 0; | 
 |         (a[13] => z[27]) = 0; | 
 |         (a[14] => z[27]) = 0; | 
 |         (a[15] => z[27]) = 0; | 
 |         (a[16] => z[27]) = 0; | 
 |         (a[17] => z[27]) = 0; | 
 |         (a[18] => z[27]) = 0; | 
 |         (a[19] => z[27]) = 0; | 
 |         (b[0] => z[27]) = 0; | 
 |         (b[1] => z[27]) = 0; | 
 |         (b[2] => z[27]) = 0; | 
 |         (b[3] => z[27]) = 0; | 
 |         (b[4] => z[27]) = 0; | 
 |         (b[5] => z[27]) = 0; | 
 |         (b[6] => z[27]) = 0; | 
 |         (b[7] => z[27]) = 0; | 
 |         (b[8] => z[27]) = 0; | 
 |         (b[9] => z[27]) = 0; | 
 |         (b[10] => z[27]) = 0; | 
 |         (b[11] => z[27]) = 0; | 
 |         (b[12] => z[27]) = 0; | 
 |         (b[13] => z[27]) = 0; | 
 |         (b[14] => z[27]) = 0; | 
 |         (b[15] => z[27]) = 0; | 
 |         (b[16] => z[27]) = 0; | 
 |         (b[17] => z[27]) = 0; | 
 |         (a[0] => z[28]) = 0; | 
 |         (a[1] => z[28]) = 0; | 
 |         (a[2] => z[28]) = 0; | 
 |         (a[3] => z[28]) = 0; | 
 |         (a[4] => z[28]) = 0; | 
 |         (a[5] => z[28]) = 0; | 
 |         (a[6] => z[28]) = 0; | 
 |         (a[7] => z[28]) = 0; | 
 |         (a[8] => z[28]) = 0; | 
 |         (a[9] => z[28]) = 0; | 
 |         (a[10] => z[28]) = 0; | 
 |         (a[11] => z[28]) = 0; | 
 |         (a[12] => z[28]) = 0; | 
 |         (a[13] => z[28]) = 0; | 
 |         (a[14] => z[28]) = 0; | 
 |         (a[15] => z[28]) = 0; | 
 |         (a[16] => z[28]) = 0; | 
 |         (a[17] => z[28]) = 0; | 
 |         (a[18] => z[28]) = 0; | 
 |         (a[19] => z[28]) = 0; | 
 |         (b[0] => z[28]) = 0; | 
 |         (b[1] => z[28]) = 0; | 
 |         (b[2] => z[28]) = 0; | 
 |         (b[3] => z[28]) = 0; | 
 |         (b[4] => z[28]) = 0; | 
 |         (b[5] => z[28]) = 0; | 
 |         (b[6] => z[28]) = 0; | 
 |         (b[7] => z[28]) = 0; | 
 |         (b[8] => z[28]) = 0; | 
 |         (b[9] => z[28]) = 0; | 
 |         (b[10] => z[28]) = 0; | 
 |         (b[11] => z[28]) = 0; | 
 |         (b[12] => z[28]) = 0; | 
 |         (b[13] => z[28]) = 0; | 
 |         (b[14] => z[28]) = 0; | 
 |         (b[15] => z[28]) = 0; | 
 |         (b[16] => z[28]) = 0; | 
 |         (b[17] => z[28]) = 0; | 
 |         (a[0] => z[29]) = 0; | 
 |         (a[1] => z[29]) = 0; | 
 |         (a[2] => z[29]) = 0; | 
 |         (a[3] => z[29]) = 0; | 
 |         (a[4] => z[29]) = 0; | 
 |         (a[5] => z[29]) = 0; | 
 |         (a[6] => z[29]) = 0; | 
 |         (a[7] => z[29]) = 0; | 
 |         (a[8] => z[29]) = 0; | 
 |         (a[9] => z[29]) = 0; | 
 |         (a[10] => z[29]) = 0; | 
 |         (a[11] => z[29]) = 0; | 
 |         (a[12] => z[29]) = 0; | 
 |         (a[13] => z[29]) = 0; | 
 |         (a[14] => z[29]) = 0; | 
 |         (a[15] => z[29]) = 0; | 
 |         (a[16] => z[29]) = 0; | 
 |         (a[17] => z[29]) = 0; | 
 |         (a[18] => z[29]) = 0; | 
 |         (a[19] => z[29]) = 0; | 
 |         (b[0] => z[29]) = 0; | 
 |         (b[1] => z[29]) = 0; | 
 |         (b[2] => z[29]) = 0; | 
 |         (b[3] => z[29]) = 0; | 
 |         (b[4] => z[29]) = 0; | 
 |         (b[5] => z[29]) = 0; | 
 |         (b[6] => z[29]) = 0; | 
 |         (b[7] => z[29]) = 0; | 
 |         (b[8] => z[29]) = 0; | 
 |         (b[9] => z[29]) = 0; | 
 |         (b[10] => z[29]) = 0; | 
 |         (b[11] => z[29]) = 0; | 
 |         (b[12] => z[29]) = 0; | 
 |         (b[13] => z[29]) = 0; | 
 |         (b[14] => z[29]) = 0; | 
 |         (b[15] => z[29]) = 0; | 
 |         (b[16] => z[29]) = 0; | 
 |         (b[17] => z[29]) = 0; | 
 |         (a[0] => z[30]) = 0; | 
 |         (a[1] => z[30]) = 0; | 
 |         (a[2] => z[30]) = 0; | 
 |         (a[3] => z[30]) = 0; | 
 |         (a[4] => z[30]) = 0; | 
 |         (a[5] => z[30]) = 0; | 
 |         (a[6] => z[30]) = 0; | 
 |         (a[7] => z[30]) = 0; | 
 |         (a[8] => z[30]) = 0; | 
 |         (a[9] => z[30]) = 0; | 
 |         (a[10] => z[30]) = 0; | 
 |         (a[11] => z[30]) = 0; | 
 |         (a[12] => z[30]) = 0; | 
 |         (a[13] => z[30]) = 0; | 
 |         (a[14] => z[30]) = 0; | 
 |         (a[15] => z[30]) = 0; | 
 |         (a[16] => z[30]) = 0; | 
 |         (a[17] => z[30]) = 0; | 
 |         (a[18] => z[30]) = 0; | 
 |         (a[19] => z[30]) = 0; | 
 |         (b[0] => z[30]) = 0; | 
 |         (b[1] => z[30]) = 0; | 
 |         (b[2] => z[30]) = 0; | 
 |         (b[3] => z[30]) = 0; | 
 |         (b[4] => z[30]) = 0; | 
 |         (b[5] => z[30]) = 0; | 
 |         (b[6] => z[30]) = 0; | 
 |         (b[7] => z[30]) = 0; | 
 |         (b[8] => z[30]) = 0; | 
 |         (b[9] => z[30]) = 0; | 
 |         (b[10] => z[30]) = 0; | 
 |         (b[11] => z[30]) = 0; | 
 |         (b[12] => z[30]) = 0; | 
 |         (b[13] => z[30]) = 0; | 
 |         (b[14] => z[30]) = 0; | 
 |         (b[15] => z[30]) = 0; | 
 |         (b[16] => z[30]) = 0; | 
 |         (b[17] => z[30]) = 0; | 
 |         (a[0] => z[31]) = 0; | 
 |         (a[1] => z[31]) = 0; | 
 |         (a[2] => z[31]) = 0; | 
 |         (a[3] => z[31]) = 0; | 
 |         (a[4] => z[31]) = 0; | 
 |         (a[5] => z[31]) = 0; | 
 |         (a[6] => z[31]) = 0; | 
 |         (a[7] => z[31]) = 0; | 
 |         (a[8] => z[31]) = 0; | 
 |         (a[9] => z[31]) = 0; | 
 |         (a[10] => z[31]) = 0; | 
 |         (a[11] => z[31]) = 0; | 
 |         (a[12] => z[31]) = 0; | 
 |         (a[13] => z[31]) = 0; | 
 |         (a[14] => z[31]) = 0; | 
 |         (a[15] => z[31]) = 0; | 
 |         (a[16] => z[31]) = 0; | 
 |         (a[17] => z[31]) = 0; | 
 |         (a[18] => z[31]) = 0; | 
 |         (a[19] => z[31]) = 0; | 
 |         (b[0] => z[31]) = 0; | 
 |         (b[1] => z[31]) = 0; | 
 |         (b[2] => z[31]) = 0; | 
 |         (b[3] => z[31]) = 0; | 
 |         (b[4] => z[31]) = 0; | 
 |         (b[5] => z[31]) = 0; | 
 |         (b[6] => z[31]) = 0; | 
 |         (b[7] => z[31]) = 0; | 
 |         (b[8] => z[31]) = 0; | 
 |         (b[9] => z[31]) = 0; | 
 |         (b[10] => z[31]) = 0; | 
 |         (b[11] => z[31]) = 0; | 
 |         (b[12] => z[31]) = 0; | 
 |         (b[13] => z[31]) = 0; | 
 |         (b[14] => z[31]) = 0; | 
 |         (b[15] => z[31]) = 0; | 
 |         (b[16] => z[31]) = 0; | 
 |         (b[17] => z[31]) = 0; | 
 |         (a[0] => z[32]) = 0; | 
 |         (a[1] => z[32]) = 0; | 
 |         (a[2] => z[32]) = 0; | 
 |         (a[3] => z[32]) = 0; | 
 |         (a[4] => z[32]) = 0; | 
 |         (a[5] => z[32]) = 0; | 
 |         (a[6] => z[32]) = 0; | 
 |         (a[7] => z[32]) = 0; | 
 |         (a[8] => z[32]) = 0; | 
 |         (a[9] => z[32]) = 0; | 
 |         (a[10] => z[32]) = 0; | 
 |         (a[11] => z[32]) = 0; | 
 |         (a[12] => z[32]) = 0; | 
 |         (a[13] => z[32]) = 0; | 
 |         (a[14] => z[32]) = 0; | 
 |         (a[15] => z[32]) = 0; | 
 |         (a[16] => z[32]) = 0; | 
 |         (a[17] => z[32]) = 0; | 
 |         (a[18] => z[32]) = 0; | 
 |         (a[19] => z[32]) = 0; | 
 |         (b[0] => z[32]) = 0; | 
 |         (b[1] => z[32]) = 0; | 
 |         (b[2] => z[32]) = 0; | 
 |         (b[3] => z[32]) = 0; | 
 |         (b[4] => z[32]) = 0; | 
 |         (b[5] => z[32]) = 0; | 
 |         (b[6] => z[32]) = 0; | 
 |         (b[7] => z[32]) = 0; | 
 |         (b[8] => z[32]) = 0; | 
 |         (b[9] => z[32]) = 0; | 
 |         (b[10] => z[32]) = 0; | 
 |         (b[11] => z[32]) = 0; | 
 |         (b[12] => z[32]) = 0; | 
 |         (b[13] => z[32]) = 0; | 
 |         (b[14] => z[32]) = 0; | 
 |         (b[15] => z[32]) = 0; | 
 |         (b[16] => z[32]) = 0; | 
 |         (b[17] => z[32]) = 0; | 
 |         (a[0] => z[33]) = 0; | 
 |         (a[1] => z[33]) = 0; | 
 |         (a[2] => z[33]) = 0; | 
 |         (a[3] => z[33]) = 0; | 
 |         (a[4] => z[33]) = 0; | 
 |         (a[5] => z[33]) = 0; | 
 |         (a[6] => z[33]) = 0; | 
 |         (a[7] => z[33]) = 0; | 
 |         (a[8] => z[33]) = 0; | 
 |         (a[9] => z[33]) = 0; | 
 |         (a[10] => z[33]) = 0; | 
 |         (a[11] => z[33]) = 0; | 
 |         (a[12] => z[33]) = 0; | 
 |         (a[13] => z[33]) = 0; | 
 |         (a[14] => z[33]) = 0; | 
 |         (a[15] => z[33]) = 0; | 
 |         (a[16] => z[33]) = 0; | 
 |         (a[17] => z[33]) = 0; | 
 |         (a[18] => z[33]) = 0; | 
 |         (a[19] => z[33]) = 0; | 
 |         (b[0] => z[33]) = 0; | 
 |         (b[1] => z[33]) = 0; | 
 |         (b[2] => z[33]) = 0; | 
 |         (b[3] => z[33]) = 0; | 
 |         (b[4] => z[33]) = 0; | 
 |         (b[5] => z[33]) = 0; | 
 |         (b[6] => z[33]) = 0; | 
 |         (b[7] => z[33]) = 0; | 
 |         (b[8] => z[33]) = 0; | 
 |         (b[9] => z[33]) = 0; | 
 |         (b[10] => z[33]) = 0; | 
 |         (b[11] => z[33]) = 0; | 
 |         (b[12] => z[33]) = 0; | 
 |         (b[13] => z[33]) = 0; | 
 |         (b[14] => z[33]) = 0; | 
 |         (b[15] => z[33]) = 0; | 
 |         (b[16] => z[33]) = 0; | 
 |         (b[17] => z[33]) = 0; | 
 |         (a[0] => z[34]) = 0; | 
 |         (a[1] => z[34]) = 0; | 
 |         (a[2] => z[34]) = 0; | 
 |         (a[3] => z[34]) = 0; | 
 |         (a[4] => z[34]) = 0; | 
 |         (a[5] => z[34]) = 0; | 
 |         (a[6] => z[34]) = 0; | 
 |         (a[7] => z[34]) = 0; | 
 |         (a[8] => z[34]) = 0; | 
 |         (a[9] => z[34]) = 0; | 
 |         (a[10] => z[34]) = 0; | 
 |         (a[11] => z[34]) = 0; | 
 |         (a[12] => z[34]) = 0; | 
 |         (a[13] => z[34]) = 0; | 
 |         (a[14] => z[34]) = 0; | 
 |         (a[15] => z[34]) = 0; | 
 |         (a[16] => z[34]) = 0; | 
 |         (a[17] => z[34]) = 0; | 
 |         (a[18] => z[34]) = 0; | 
 |         (a[19] => z[34]) = 0; | 
 |         (b[0] => z[34]) = 0; | 
 |         (b[1] => z[34]) = 0; | 
 |         (b[2] => z[34]) = 0; | 
 |         (b[3] => z[34]) = 0; | 
 |         (b[4] => z[34]) = 0; | 
 |         (b[5] => z[34]) = 0; | 
 |         (b[6] => z[34]) = 0; | 
 |         (b[7] => z[34]) = 0; | 
 |         (b[8] => z[34]) = 0; | 
 |         (b[9] => z[34]) = 0; | 
 |         (b[10] => z[34]) = 0; | 
 |         (b[11] => z[34]) = 0; | 
 |         (b[12] => z[34]) = 0; | 
 |         (b[13] => z[34]) = 0; | 
 |         (b[14] => z[34]) = 0; | 
 |         (b[15] => z[34]) = 0; | 
 |         (b[16] => z[34]) = 0; | 
 |         (b[17] => z[34]) = 0; | 
 |         (a[0] => z[35]) = 0; | 
 |         (a[1] => z[35]) = 0; | 
 |         (a[2] => z[35]) = 0; | 
 |         (a[3] => z[35]) = 0; | 
 |         (a[4] => z[35]) = 0; | 
 |         (a[5] => z[35]) = 0; | 
 |         (a[6] => z[35]) = 0; | 
 |         (a[7] => z[35]) = 0; | 
 |         (a[8] => z[35]) = 0; | 
 |         (a[9] => z[35]) = 0; | 
 |         (a[10] => z[35]) = 0; | 
 |         (a[11] => z[35]) = 0; | 
 |         (a[12] => z[35]) = 0; | 
 |         (a[13] => z[35]) = 0; | 
 |         (a[14] => z[35]) = 0; | 
 |         (a[15] => z[35]) = 0; | 
 |         (a[16] => z[35]) = 0; | 
 |         (a[17] => z[35]) = 0; | 
 |         (a[18] => z[35]) = 0; | 
 |         (a[19] => z[35]) = 0; | 
 |         (b[0] => z[35]) = 0; | 
 |         (b[1] => z[35]) = 0; | 
 |         (b[2] => z[35]) = 0; | 
 |         (b[3] => z[35]) = 0; | 
 |         (b[4] => z[35]) = 0; | 
 |         (b[5] => z[35]) = 0; | 
 |         (b[6] => z[35]) = 0; | 
 |         (b[7] => z[35]) = 0; | 
 |         (b[8] => z[35]) = 0; | 
 |         (b[9] => z[35]) = 0; | 
 |         (b[10] => z[35]) = 0; | 
 |         (b[11] => z[35]) = 0; | 
 |         (b[12] => z[35]) = 0; | 
 |         (b[13] => z[35]) = 0; | 
 |         (b[14] => z[35]) = 0; | 
 |         (b[15] => z[35]) = 0; | 
 |         (b[16] => z[35]) = 0; | 
 |         (b[17] => z[35]) = 0; | 
 |         (a[0] => z[36]) = 0; | 
 |         (a[1] => z[36]) = 0; | 
 |         (a[2] => z[36]) = 0; | 
 |         (a[3] => z[36]) = 0; | 
 |         (a[4] => z[36]) = 0; | 
 |         (a[5] => z[36]) = 0; | 
 |         (a[6] => z[36]) = 0; | 
 |         (a[7] => z[36]) = 0; | 
 |         (a[8] => z[36]) = 0; | 
 |         (a[9] => z[36]) = 0; | 
 |         (a[10] => z[36]) = 0; | 
 |         (a[11] => z[36]) = 0; | 
 |         (a[12] => z[36]) = 0; | 
 |         (a[13] => z[36]) = 0; | 
 |         (a[14] => z[36]) = 0; | 
 |         (a[15] => z[36]) = 0; | 
 |         (a[16] => z[36]) = 0; | 
 |         (a[17] => z[36]) = 0; | 
 |         (a[18] => z[36]) = 0; | 
 |         (a[19] => z[36]) = 0; | 
 |         (b[0] => z[36]) = 0; | 
 |         (b[1] => z[36]) = 0; | 
 |         (b[2] => z[36]) = 0; | 
 |         (b[3] => z[36]) = 0; | 
 |         (b[4] => z[36]) = 0; | 
 |         (b[5] => z[36]) = 0; | 
 |         (b[6] => z[36]) = 0; | 
 |         (b[7] => z[36]) = 0; | 
 |         (b[8] => z[36]) = 0; | 
 |         (b[9] => z[36]) = 0; | 
 |         (b[10] => z[36]) = 0; | 
 |         (b[11] => z[36]) = 0; | 
 |         (b[12] => z[36]) = 0; | 
 |         (b[13] => z[36]) = 0; | 
 |         (b[14] => z[36]) = 0; | 
 |         (b[15] => z[36]) = 0; | 
 |         (b[16] => z[36]) = 0; | 
 |         (b[17] => z[36]) = 0; | 
 |         (a[0] => z[37]) = 0; | 
 |         (a[1] => z[37]) = 0; | 
 |         (a[2] => z[37]) = 0; | 
 |         (a[3] => z[37]) = 0; | 
 |         (a[4] => z[37]) = 0; | 
 |         (a[5] => z[37]) = 0; | 
 |         (a[6] => z[37]) = 0; | 
 |         (a[7] => z[37]) = 0; | 
 |         (a[8] => z[37]) = 0; | 
 |         (a[9] => z[37]) = 0; | 
 |         (a[10] => z[37]) = 0; | 
 |         (a[11] => z[37]) = 0; | 
 |         (a[12] => z[37]) = 0; | 
 |         (a[13] => z[37]) = 0; | 
 |         (a[14] => z[37]) = 0; | 
 |         (a[15] => z[37]) = 0; | 
 |         (a[16] => z[37]) = 0; | 
 |         (a[17] => z[37]) = 0; | 
 |         (a[18] => z[37]) = 0; | 
 |         (a[19] => z[37]) = 0; | 
 |         (b[0] => z[37]) = 0; | 
 |         (b[1] => z[37]) = 0; | 
 |         (b[2] => z[37]) = 0; | 
 |         (b[3] => z[37]) = 0; | 
 |         (b[4] => z[37]) = 0; | 
 |         (b[5] => z[37]) = 0; | 
 |         (b[6] => z[37]) = 0; | 
 |         (b[7] => z[37]) = 0; | 
 |         (b[8] => z[37]) = 0; | 
 |         (b[9] => z[37]) = 0; | 
 |         (b[10] => z[37]) = 0; | 
 |         (b[11] => z[37]) = 0; | 
 |         (b[12] => z[37]) = 0; | 
 |         (b[13] => z[37]) = 0; | 
 |         (b[14] => z[37]) = 0; | 
 |         (b[15] => z[37]) = 0; | 
 |         (b[16] => z[37]) = 0; | 
 |         (b[17] => z[37]) = 0; | 
 | 		(subtract => z[0]) = 0; | 
 | 		(subtract => z[1]) = 0; | 
 | 		(subtract => z[2]) = 0; | 
 | 		(subtract => z[3]) = 0; | 
 | 		(subtract => z[4]) = 0; | 
 | 		(subtract => z[5]) = 0; | 
 | 		(subtract => z[6]) = 0; | 
 | 		(subtract => z[7]) = 0; | 
 | 		(subtract => z[8]) = 0; | 
 | 		(subtract => z[9]) = 0; | 
 | 		(subtract => z[10]) = 0; | 
 | 		(subtract => z[11]) = 0; | 
 | 		(subtract => z[12]) = 0; | 
 | 		(subtract => z[13]) = 0; | 
 | 		(subtract => z[14]) = 0; | 
 | 		(subtract => z[15]) = 0; | 
 | 		(subtract => z[16]) = 0; | 
 | 		(subtract => z[17]) = 0; | 
 | 		(subtract => z[18]) = 0; | 
 | 		(subtract => z[19]) = 0; | 
 | 		(subtract => z[20]) = 0; | 
 | 		(subtract => z[21]) = 0; | 
 | 		(subtract => z[22]) = 0; | 
 | 		(subtract => z[23]) = 0; | 
 | 		(subtract => z[24]) = 0; | 
 | 		(subtract => z[25]) = 0; | 
 | 		(subtract => z[26]) = 0; | 
 | 		(subtract => z[27]) = 0; | 
 | 		(subtract => z[28]) = 0; | 
 | 		(subtract => z[29]) = 0; | 
 | 		(subtract => z[30]) = 0; | 
 | 		(subtract => z[31]) = 0; | 
 | 		(subtract => z[32]) = 0; | 
 | 		(subtract => z[33]) = 0; | 
 | 		(subtract => z[34]) = 0; | 
 | 		(subtract => z[35]) = 0; | 
 | 		(subtract => z[36]) = 0; | 
 | 		(subtract => z[37]) = 0; | 
 | 		(acc_fir[0] => z[0]) = 0; | 
 |         (acc_fir[1] => z[0]) = 0; | 
 |         (acc_fir[2] => z[0]) = 0; | 
 |         (acc_fir[3] => z[0]) = 0; | 
 |         (acc_fir[4] => z[0]) = 0; | 
 | 		(acc_fir[5] => z[0]) = 0; | 
 | 		(acc_fir[0] => z[1]) = 0; | 
 |         (acc_fir[1] => z[1]) = 0; | 
 |         (acc_fir[2] => z[1]) = 0; | 
 |         (acc_fir[3] => z[1]) = 0; | 
 |         (acc_fir[4] => z[1]) = 0; | 
 | 		(acc_fir[5] => z[1]) = 0; | 
 | 		(acc_fir[0] => z[2]) = 0; | 
 |         (acc_fir[1] => z[2]) = 0; | 
 |         (acc_fir[2] => z[2]) = 0; | 
 |         (acc_fir[3] => z[2]) = 0; | 
 |         (acc_fir[4] => z[2]) = 0; | 
 | 		(acc_fir[5] => z[2]) = 0; | 
 | 		(acc_fir[0] => z[3]) = 0; | 
 |         (acc_fir[1] => z[3]) = 0; | 
 |         (acc_fir[2] => z[3]) = 0; | 
 |         (acc_fir[3] => z[3]) = 0; | 
 |         (acc_fir[4] => z[3]) = 0; | 
 | 		(acc_fir[5] => z[3]) = 0; | 
 | 		(acc_fir[0] => z[4]) = 0; | 
 |         (acc_fir[1] => z[4]) = 0; | 
 |         (acc_fir[2] => z[4]) = 0; | 
 |         (acc_fir[3] => z[4]) = 0; | 
 |         (acc_fir[4] => z[4]) = 0; | 
 | 		(acc_fir[5] => z[4]) = 0; | 
 | 		(acc_fir[0] => z[5]) = 0; | 
 |         (acc_fir[1] => z[5]) = 0; | 
 |         (acc_fir[2] => z[5]) = 0; | 
 |         (acc_fir[3] => z[5]) = 0; | 
 |         (acc_fir[4] => z[5]) = 0; | 
 | 		(acc_fir[5] => z[5]) = 0; | 
 | 		(acc_fir[0] => z[6]) = 0; | 
 |         (acc_fir[1] => z[6]) = 0; | 
 |         (acc_fir[2] => z[6]) = 0; | 
 |         (acc_fir[3] => z[6]) = 0; | 
 |         (acc_fir[4] => z[6]) = 0; | 
 | 		(acc_fir[5] => z[6]) = 0; | 
 | 		(acc_fir[0] => z[7]) = 0; | 
 |         (acc_fir[1] => z[7]) = 0; | 
 |         (acc_fir[2] => z[7]) = 0; | 
 |         (acc_fir[3] => z[7]) = 0; | 
 |         (acc_fir[4] => z[7]) = 0; | 
 | 		(acc_fir[5] => z[7]) = 0; | 
 | 		(acc_fir[0] => z[8]) = 0; | 
 |         (acc_fir[1] => z[8]) = 0; | 
 |         (acc_fir[2] => z[8]) = 0; | 
 |         (acc_fir[3] => z[8]) = 0; | 
 |         (acc_fir[4] => z[8]) = 0; | 
 | 		(acc_fir[5] => z[8]) = 0; | 
 | 		(acc_fir[0] => z[9]) = 0; | 
 |         (acc_fir[1] => z[9]) = 0; | 
 |         (acc_fir[2] => z[9]) = 0; | 
 |         (acc_fir[3] => z[9]) = 0; | 
 |         (acc_fir[4] => z[9]) = 0; | 
 | 		(acc_fir[5] => z[9]) = 0; | 
 | 		(acc_fir[0] => z[10]) = 0; | 
 |         (acc_fir[1] => z[10]) = 0; | 
 |         (acc_fir[2] => z[10]) = 0; | 
 |         (acc_fir[3] => z[10]) = 0; | 
 |         (acc_fir[4] => z[10]) = 0; | 
 | 		(acc_fir[5] => z[10]) = 0; | 
 | 		(acc_fir[0] => z[11]) = 0; | 
 |         (acc_fir[1] => z[11]) = 0; | 
 |         (acc_fir[2] => z[11]) = 0; | 
 |         (acc_fir[3] => z[11]) = 0; | 
 |         (acc_fir[4] => z[11]) = 0; | 
 | 		(acc_fir[5] => z[11]) = 0; | 
 | 		(acc_fir[0] => z[12]) = 0; | 
 |         (acc_fir[1] => z[12]) = 0; | 
 |         (acc_fir[2] => z[12]) = 0; | 
 |         (acc_fir[3] => z[12]) = 0; | 
 |         (acc_fir[4] => z[12]) = 0; | 
 | 		(acc_fir[5] => z[12]) = 0; | 
 | 		(acc_fir[0] => z[13]) = 0; | 
 |         (acc_fir[1] => z[13]) = 0; | 
 |         (acc_fir[2] => z[13]) = 0; | 
 |         (acc_fir[3] => z[13]) = 0; | 
 |         (acc_fir[4] => z[13]) = 0; | 
 | 		(acc_fir[5] => z[13]) = 0; | 
 | 		(acc_fir[0] => z[14]) = 0; | 
 |         (acc_fir[1] => z[14]) = 0; | 
 |         (acc_fir[2] => z[14]) = 0; | 
 |         (acc_fir[3] => z[14]) = 0; | 
 |         (acc_fir[4] => z[14]) = 0; | 
 | 		(acc_fir[5] => z[14]) = 0; | 
 | 		(acc_fir[0] => z[15]) = 0; | 
 |         (acc_fir[1] => z[15]) = 0; | 
 |         (acc_fir[2] => z[15]) = 0; | 
 |         (acc_fir[3] => z[15]) = 0; | 
 |         (acc_fir[4] => z[15]) = 0; | 
 | 		(acc_fir[5] => z[15]) = 0; | 
 | 		(acc_fir[0] => z[16]) = 0; | 
 |         (acc_fir[1] => z[16]) = 0; | 
 |         (acc_fir[2] => z[16]) = 0; | 
 |         (acc_fir[3] => z[16]) = 0; | 
 |         (acc_fir[4] => z[16]) = 0; | 
 | 		(acc_fir[5] => z[16]) = 0; | 
 | 		(acc_fir[0] => z[17]) = 0; | 
 |         (acc_fir[1] => z[17]) = 0; | 
 |         (acc_fir[2] => z[17]) = 0; | 
 |         (acc_fir[3] => z[17]) = 0; | 
 |         (acc_fir[4] => z[17]) = 0; | 
 | 		(acc_fir[5] => z[17]) = 0; | 
 | 		(acc_fir[0] => z[18]) = 0; | 
 |         (acc_fir[1] => z[18]) = 0; | 
 |         (acc_fir[2] => z[18]) = 0; | 
 |         (acc_fir[3] => z[18]) = 0; | 
 |         (acc_fir[4] => z[18]) = 0; | 
 | 		(acc_fir[5] => z[18]) = 0; | 
 | 		(acc_fir[0] => z[19]) = 0; | 
 |         (acc_fir[1] => z[19]) = 0; | 
 |         (acc_fir[2] => z[19]) = 0; | 
 |         (acc_fir[3] => z[19]) = 0; | 
 |         (acc_fir[4] => z[19]) = 0; | 
 | 		(acc_fir[5] => z[19]) = 0; | 
 | 		(acc_fir[0] => z[20]) = 0; | 
 |         (acc_fir[1] => z[20]) = 0; | 
 |         (acc_fir[2] => z[20]) = 0; | 
 |         (acc_fir[3] => z[20]) = 0; | 
 |         (acc_fir[4] => z[20]) = 0; | 
 | 		(acc_fir[5] => z[20]) = 0; | 
 | 		(acc_fir[0] => z[21]) = 0; | 
 |         (acc_fir[1] => z[21]) = 0; | 
 |         (acc_fir[2] => z[21]) = 0; | 
 |         (acc_fir[3] => z[21]) = 0; | 
 |         (acc_fir[4] => z[21]) = 0; | 
 | 		(acc_fir[5] => z[21]) = 0; | 
 | 		(acc_fir[0] => z[22]) = 0; | 
 |         (acc_fir[1] => z[22]) = 0; | 
 |         (acc_fir[2] => z[22]) = 0; | 
 |         (acc_fir[3] => z[22]) = 0; | 
 |         (acc_fir[4] => z[22]) = 0; | 
 | 		(acc_fir[5] => z[22]) = 0; | 
 | 		(acc_fir[0] => z[23]) = 0; | 
 |         (acc_fir[1] => z[23]) = 0; | 
 |         (acc_fir[2] => z[23]) = 0; | 
 |         (acc_fir[3] => z[23]) = 0; | 
 |         (acc_fir[4] => z[23]) = 0; | 
 | 		(acc_fir[5] => z[23]) = 0; | 
 | 		(acc_fir[0] => z[24]) = 0; | 
 |         (acc_fir[1] => z[24]) = 0; | 
 |         (acc_fir[2] => z[24]) = 0; | 
 |         (acc_fir[3] => z[24]) = 0; | 
 |         (acc_fir[4] => z[24]) = 0; | 
 | 		(acc_fir[5] => z[24]) = 0; | 
 | 		(acc_fir[0] => z[25]) = 0; | 
 |         (acc_fir[1] => z[25]) = 0; | 
 |         (acc_fir[2] => z[25]) = 0; | 
 |         (acc_fir[3] => z[25]) = 0; | 
 |         (acc_fir[4] => z[25]) = 0; | 
 | 		(acc_fir[5] => z[25]) = 0; | 
 | 		(acc_fir[0] => z[26]) = 0; | 
 |         (acc_fir[1] => z[26]) = 0; | 
 |         (acc_fir[2] => z[26]) = 0; | 
 |         (acc_fir[3] => z[26]) = 0; | 
 |         (acc_fir[4] => z[26]) = 0; | 
 | 		(acc_fir[5] => z[26]) = 0; | 
 | 		(acc_fir[0] => z[27]) = 0; | 
 |         (acc_fir[1] => z[27]) = 0; | 
 |         (acc_fir[2] => z[27]) = 0; | 
 |         (acc_fir[3] => z[27]) = 0; | 
 |         (acc_fir[4] => z[27]) = 0; | 
 | 		(acc_fir[5] => z[27]) = 0; | 
 | 		(acc_fir[0] => z[28]) = 0; | 
 |         (acc_fir[1] => z[28]) = 0; | 
 |         (acc_fir[2] => z[28]) = 0; | 
 |         (acc_fir[3] => z[28]) = 0; | 
 |         (acc_fir[4] => z[28]) = 0; | 
 | 		(acc_fir[5] => z[28]) = 0; | 
 | 		(acc_fir[0] => z[29]) = 0; | 
 |         (acc_fir[1] => z[29]) = 0; | 
 |         (acc_fir[2] => z[29]) = 0; | 
 |         (acc_fir[3] => z[29]) = 0; | 
 |         (acc_fir[4] => z[29]) = 0; | 
 | 		(acc_fir[5] => z[29]) = 0; | 
 | 		(acc_fir[0] => z[30]) = 0; | 
 |         (acc_fir[1] => z[30]) = 0; | 
 |         (acc_fir[2] => z[30]) = 0; | 
 |         (acc_fir[3] => z[30]) = 0; | 
 |         (acc_fir[4] => z[30]) = 0; | 
 | 		(acc_fir[5] => z[30]) = 0; | 
 | 		(acc_fir[0] => z[31]) = 0; | 
 |         (acc_fir[1] => z[31]) = 0; | 
 |         (acc_fir[2] => z[31]) = 0; | 
 |         (acc_fir[3] => z[31]) = 0; | 
 |         (acc_fir[4] => z[31]) = 0; | 
 | 		(acc_fir[5] => z[31]) = 0; | 
 | 		(acc_fir[0] => z[32]) = 0; | 
 |         (acc_fir[1] => z[32]) = 0; | 
 |         (acc_fir[2] => z[32]) = 0; | 
 |         (acc_fir[3] => z[32]) = 0; | 
 |         (acc_fir[4] => z[32]) = 0; | 
 | 		(acc_fir[5] => z[32]) = 0; | 
 | 		(acc_fir[0] => z[33]) = 0; | 
 |         (acc_fir[1] => z[33]) = 0; | 
 |         (acc_fir[2] => z[33]) = 0; | 
 |         (acc_fir[3] => z[33]) = 0; | 
 |         (acc_fir[4] => z[33]) = 0; | 
 | 		(acc_fir[5] => z[33]) = 0; | 
 | 		(acc_fir[0] => z[34]) = 0; | 
 |         (acc_fir[1] => z[34]) = 0; | 
 |         (acc_fir[2] => z[34]) = 0; | 
 |         (acc_fir[3] => z[34]) = 0; | 
 |         (acc_fir[4] => z[34]) = 0; | 
 | 		(acc_fir[5] => z[34]) = 0; | 
 | 		(acc_fir[0] => z[35]) = 0; | 
 |         (acc_fir[1] => z[35]) = 0; | 
 |         (acc_fir[2] => z[35]) = 0; | 
 |         (acc_fir[3] => z[35]) = 0; | 
 |         (acc_fir[4] => z[35]) = 0; | 
 | 		(acc_fir[5] => z[35]) = 0; | 
 | 		(acc_fir[0] => z[36]) = 0; | 
 |         (acc_fir[1] => z[36]) = 0; | 
 |         (acc_fir[2] => z[36]) = 0; | 
 |         (acc_fir[3] => z[36]) = 0; | 
 |         (acc_fir[4] => z[36]) = 0; | 
 | 		(acc_fir[5] => z[36]) = 0; | 
 | 		(acc_fir[0] => z[37]) = 0; | 
 |         (acc_fir[1] => z[37]) = 0; | 
 |         (acc_fir[2] => z[37]) = 0; | 
 |         (acc_fir[3] => z[37]) = 0; | 
 |         (acc_fir[4] => z[37]) = 0; | 
 | 		(acc_fir[5] => z[37]) = 0; | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTADD_REGIN ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .dly_b(), | 
 |         .z(z), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: ACCin (2, 3) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 		$setuphold(posedge clk, acc_fir, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTADD_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .dly_b(), | 
 |         .z(z), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: ACCin (6, 7) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 		$setuphold(posedge clk, acc_fir, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 |  | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTADD_REGIN_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .dly_b(), | 
 |         .z(z), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: ACCin (6, 7) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 		$setuphold(posedge clk, acc_fir, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 |  | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTACC ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire        load_acc, | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: ACCout (1) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTACC_REGIN ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // unregistered output: ACCout (1) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTACC_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: ACCout (5) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // unregistered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module QL_DSP2_MULTACC_REGIN_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |  | 
 |     input  wire        f_mode, | 
 |     input  wire [ 2:0] output_select, | 
 |     input  wire        saturate_enable, | 
 |     input  wire [ 5:0] shift_right, | 
 |     input  wire        round, | 
 |     input  wire        subtract, | 
 |     input  wire        register_inputs | 
 | ); | 
 |  | 
 |     parameter [79:0] MODE_BITS = 80'd0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .acc_fir(6'b0), | 
 |         .z(z), | 
 |         .dly_b(), | 
 |  | 
 |         .f_mode(f_mode), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |  | 
 |         .output_select(output_select),      // registered output: ACCout (5) | 
 |         .saturate_enable(saturate_enable), | 
 |         .shift_right(shift_right), | 
 |         .round(round), | 
 |         .subtract(subtract), | 
 |         .register_inputs(register_inputs)   // registered inputs | 
 |     ); | 
 |  | 
 | `ifdef SDF_SIM	 | 
 | 	specify | 
 | 		(posedge clk => (z +: a)) = 0; | 
 | 		(posedge clk => (z +: b)) = 0; | 
 | 		$setuphold(posedge clk, a, 0, 0); | 
 | 		$setuphold(posedge clk, b, 0, 0); | 
 | 		$setuphold(posedge clk, feedback, 0, 0); | 
 | 		$setuphold(posedge clk, load_acc, 0, 0); | 
 | 		$setuphold(posedge clk, subtract, 0, 0); | 
 | 	endspecify | 
 | `endif | 
 | 	 | 
 | endmodule | 
 |  | 
 | module dsp_t1_20x18x64_cfg_ports ( | 
 |     input  wire [19:0] a_i, | 
 |     input  wire [17:0] b_i, | 
 |     input  wire [ 5:0] acc_fir_i, | 
 |     output wire [37:0] z_o, | 
 |     output wire [17:0] dly_b_o, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clock_i, | 
 |     input  wire        reset_i, | 
 |  | 
 |     input  wire [ 2:0] feedback_i, | 
 |     input  wire        load_acc_i, | 
 |     input  wire        unsigned_a_i, | 
 |     input  wire        unsigned_b_i, | 
 |  | 
 |     input  wire [ 2:0] output_select_i, | 
 |     input  wire        saturate_enable_i, | 
 |     input  wire [ 5:0] shift_right_i, | 
 |     input  wire        round_i, | 
 |     input  wire        subtract_i, | 
 |     input  wire        register_inputs_i | 
 | ); | 
 |  | 
 |     parameter [19:0] COEFF_0 = 20'd0; | 
 |     parameter [19:0] COEFF_1 = 20'd0; | 
 |     parameter [19:0] COEFF_2 = 20'd0; | 
 |     parameter [19:0] COEFF_3 = 20'd0; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({COEFF_3, COEFF_2, COEFF_1, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a(a_i), | 
 |         .b(b_i), | 
 |         .z(z_o), | 
 |         .dly_b(dly_b_o), | 
 |  | 
 |         .f_mode(1'b0),  // 20x18x64 DSP | 
 |  | 
 |         .acc_fir(acc_fir_i), | 
 |         .feedback(feedback_i), | 
 |         .load_acc(load_acc_i), | 
 |  | 
 |         .unsigned_a(unsigned_a_i), | 
 |         .unsigned_b(unsigned_b_i), | 
 |  | 
 |         .clk(clock_i), | 
 |         .reset(reset_i), | 
 |  | 
 |         .saturate_enable(saturate_enable_i), | 
 |         .output_select(output_select_i), | 
 |         .round(round_i), | 
 |         .shift_right(shift_right_i), | 
 |         .subtract(subtract_i), | 
 |         .register_inputs(register_inputs_i) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module dsp_t1_10x9x32_cfg_ports ( | 
 |     input  wire [ 9:0] a_i, | 
 |     input  wire [ 8:0] b_i, | 
 |     input  wire [ 5:0] acc_fir_i, | 
 |     output wire [18:0] z_o, | 
 |     output wire [ 8:0] dly_b_o, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clock_i, | 
 |     input  wire        reset_i, | 
 |  | 
 |     input  wire [ 2:0] feedback_i, | 
 |     input  wire        load_acc_i, | 
 |     input  wire        unsigned_a_i, | 
 |     input  wire        unsigned_b_i, | 
 |  | 
 |     input  wire [ 2:0] output_select_i, | 
 |     input  wire        saturate_enable_i, | 
 |     input  wire [ 5:0] shift_right_i, | 
 |     input  wire        round_i, | 
 |     input  wire        subtract_i, | 
 |     input  wire        register_inputs_i | 
 | ); | 
 |  | 
 |     parameter [9:0] COEFF_0 = 10'd0; | 
 |     parameter [9:0] COEFF_1 = 10'd0; | 
 |     parameter [9:0] COEFF_2 = 10'd0; | 
 |     parameter [9:0] COEFF_3 = 10'd0; | 
 |  | 
 |     wire [18:0] z_rem; | 
 |     wire [8:0] dly_b_rem; | 
 |  | 
 |     QL_DSP2 #( | 
 |         .MODE_BITS({10'd0, COEFF_3, | 
 |                     10'd0, COEFF_2, | 
 |                     10'd0, COEFF_1, | 
 |                     10'd0, COEFF_0}) | 
 |     ) dsp ( | 
 |         .a({10'd0, a_i}), | 
 |         .b({9'd0, b_i}), | 
 |         .z({z_rem, z_o}), | 
 |         .dly_b({dly_b_rem, dly_b_o}), | 
 |  | 
 |         .f_mode(1'b1),  // 10x9x32 DSP | 
 |  | 
 |         .acc_fir(acc_fir_i), | 
 |         .feedback(feedback_i), | 
 |         .load_acc(load_acc_i), | 
 |  | 
 |         .unsigned_a(unsigned_a_i), | 
 |         .unsigned_b(unsigned_b_i), | 
 |  | 
 |         .clk(clock_i), | 
 |         .reset(reset_i), | 
 |  | 
 |         .saturate_enable(saturate_enable_i), | 
 |         .output_select(output_select_i), | 
 |         .round(round_i), | 
 |         .shift_right(shift_right_i), | 
 |         .subtract(subtract_i), | 
 |         .register_inputs(register_inputs_i) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module dsp_t1_sim_cfg_ports # ( | 
 |     parameter NBITS_ACC  = 64, | 
 |     parameter NBITS_A    = 20, | 
 |     parameter NBITS_B    = 18, | 
 |     parameter NBITS_Z    = 38 | 
 | )( | 
 |     input  wire [NBITS_A-1:0] a_i, | 
 |     input  wire [NBITS_B-1:0] b_i, | 
 |     output wire [NBITS_Z-1:0] z_o, | 
 |     output reg  [NBITS_B-1:0] dly_b_o, | 
 |  | 
 |     input  wire [5:0]         acc_fir_i, | 
 |     input  wire [2:0]         feedback_i, | 
 |     input  wire               load_acc_i, | 
 |  | 
 |     input  wire               unsigned_a_i, | 
 |     input  wire               unsigned_b_i, | 
 |  | 
 |     input  wire               clock_i, | 
 |     input  wire               s_reset, | 
 |  | 
 |     input  wire               saturate_enable_i, | 
 |     input  wire [2:0]         output_select_i, | 
 |     input  wire               round_i, | 
 |     input  wire [5:0]         shift_right_i, | 
 |     input  wire               subtract_i, | 
 |     input  wire               register_inputs_i, | 
 |     input  wire [NBITS_A-1:0] coef_0_i, | 
 |     input  wire [NBITS_A-1:0] coef_1_i, | 
 |     input  wire [NBITS_A-1:0] coef_2_i, | 
 |     input  wire [NBITS_A-1:0] coef_3_i | 
 | ); | 
 |  | 
 | // FIXME: The version of Icarus Verilog from Conda seems not to recognize the | 
 | // $error macro. Disable this sanity check for now because of that. | 
 |  | 
 |  | 
 |     // Input registers | 
 |     reg  [NBITS_A-1:0]  r_a; | 
 |     reg  [NBITS_B-1:0]  r_b; | 
 |     reg  [5:0]          r_acc_fir; | 
 |     reg                 r_unsigned_a; | 
 |     reg                 r_unsigned_b; | 
 |     reg                 r_load_acc; | 
 |     reg  [2:0]          r_feedback; | 
 |     reg  [5:0]          r_shift_d1; | 
 |     reg  [5:0]          r_shift_d2; | 
 |     reg         r_subtract; | 
 |     reg         r_sat; | 
 |     reg         r_rnd; | 
 |     reg [NBITS_ACC-1:0] acc; | 
 |  | 
 |     initial begin | 
 |         r_a          <= 0; | 
 |         r_b          <= 0; | 
 |  | 
 |         r_acc_fir    <= 0; | 
 |         r_unsigned_a <= 0; | 
 |         r_unsigned_b <= 0; | 
 |         r_feedback   <= 0; | 
 |         r_shift_d1   <= 0; | 
 |         r_shift_d2   <= 0; | 
 |         r_subtract   <= 0; | 
 |         r_load_acc   <= 0; | 
 |         r_sat        <= 0; | 
 |         r_rnd        <= 0; | 
 |     end | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) begin | 
 |         if (s_reset) begin | 
 |  | 
 |             r_a <= 'h0; | 
 |             r_b <= 'h0; | 
 |  | 
 |             r_acc_fir    <= 0; | 
 |             r_unsigned_a <= 0; | 
 |             r_unsigned_b <= 0; | 
 |             r_feedback   <= 0; | 
 |             r_shift_d1   <= 0; | 
 |             r_shift_d2   <= 0; | 
 |             r_subtract   <= 0; | 
 |             r_load_acc   <= 0; | 
 |             r_sat    <= 0; | 
 |             r_rnd    <= 0; | 
 |  | 
 |         end else begin | 
 |  | 
 |             r_a <= a_i; | 
 |             r_b <= b_i; | 
 |  | 
 |             r_acc_fir    <= acc_fir_i; | 
 |             r_unsigned_a <= unsigned_a_i; | 
 |             r_unsigned_b <= unsigned_b_i; | 
 |             r_feedback   <= feedback_i; | 
 |             r_shift_d1   <= shift_right_i; | 
 |             r_shift_d2   <= r_shift_d1; | 
 |             r_subtract   <= subtract_i; | 
 |             r_load_acc   <= load_acc_i; | 
 |             r_sat    <= r_sat; | 
 |             r_rnd    <= r_rnd; | 
 |  | 
 |         end | 
 |     end | 
 |  | 
 |     // Registered / non-registered input path select | 
 |     wire [NBITS_A-1:0]  a = register_inputs_i ? r_a : a_i; | 
 |     wire [NBITS_B-1:0]  b = register_inputs_i ? r_b : b_i; | 
 |  | 
 |     wire [5:0] acc_fir = register_inputs_i ? r_acc_fir : acc_fir_i; | 
 |     wire       unsigned_a = register_inputs_i ? r_unsigned_a : unsigned_a_i; | 
 |     wire       unsigned_b = register_inputs_i ? r_unsigned_b : unsigned_b_i; | 
 |     wire [2:0] feedback   = register_inputs_i ? r_feedback   : feedback_i; | 
 |     wire       load_acc   = register_inputs_i ? r_load_acc   : load_acc_i; | 
 |     wire       subtract   = register_inputs_i ? r_subtract   : subtract_i; | 
 |     wire       sat    = register_inputs_i ? r_sat : saturate_enable_i; | 
 |     wire       rnd    = register_inputs_i ? r_rnd : round_i; | 
 |  | 
 |     // Shift right control | 
 |     wire [5:0] shift_d1 = register_inputs_i ? r_shift_d1 : shift_right_i; | 
 |     wire [5:0] shift_d2 = output_select_i[1] ? shift_d1 : r_shift_d2; | 
 |  | 
 |     // Multiplier | 
 |     wire unsigned_mode = unsigned_a & unsigned_b; | 
 |     wire [NBITS_A-1:0] mult_a; | 
 |     assign mult_a = (feedback == 3'h0) ?   a : | 
 |                     (feedback == 3'h1) ?   a : | 
 |                     (feedback == 3'h2) ?   a : | 
 |                     (feedback == 3'h3) ?   acc[NBITS_A-1:0] : | 
 |                     (feedback == 3'h4) ?   coef_0_i : | 
 |                     (feedback == 3'h5) ?   coef_1_i : | 
 |                     (feedback == 3'h6) ?   coef_2_i : | 
 |                        coef_3_i;    // if feedback == 3'h7 | 
 |  | 
 |     wire [NBITS_B-1:0] mult_b = (feedback == 2'h2) ? {NBITS_B{1'b0}}  : b; | 
 |  | 
 |     wire [NBITS_A-1:0] mult_sgn_a = mult_a[NBITS_A-1]; | 
 |     wire [NBITS_A-1:0] mult_mag_a = (mult_sgn_a && !unsigned_a) ? (~mult_a + 1) : mult_a; | 
 |     wire [NBITS_B-1:0] mult_sgn_b = mult_b[NBITS_B-1]; | 
 |     wire [NBITS_B-1:0] mult_mag_b = (mult_sgn_b && !unsigned_b) ? (~mult_b + 1) : mult_b; | 
 |  | 
 |     wire [NBITS_A+NBITS_B-1:0] mult_mag = mult_mag_a * mult_mag_b; | 
 |     wire mult_sgn = (mult_sgn_a && !unsigned_a) ^ (mult_sgn_b && !unsigned_b); | 
 |  | 
 |     wire [NBITS_A+NBITS_B-1:0] mult = (unsigned_a && unsigned_b) ? | 
 |         (mult_a * mult_b) : (mult_sgn ? (~mult_mag + 1) : mult_mag); | 
 |  | 
 |     // Sign extension | 
 |     wire [NBITS_ACC-1:0] mult_xtnd = unsigned_mode ? | 
 |         {{(NBITS_ACC-NBITS_A-NBITS_B){1'b0}},                    mult[NBITS_A+NBITS_B-1:0]} : | 
 |         {{(NBITS_ACC-NBITS_A-NBITS_B){mult[NBITS_A+NBITS_B-1]}}, mult[NBITS_A+NBITS_B-1:0]}; | 
 |  | 
 |     // Adder | 
 |     wire [NBITS_ACC-1:0] acc_fir_int = unsigned_a ? {{(NBITS_ACC-NBITS_A){1'b0}},         a} : | 
 |                                                     {{(NBITS_ACC-NBITS_A){a[NBITS_A-1]}}, a} ; | 
 |  | 
 |     wire [NBITS_ACC-1:0] add_a = (subtract) ? (~mult_xtnd + 1) : mult_xtnd; | 
 |     wire [NBITS_ACC-1:0] add_b = (feedback_i == 3'h0) ? acc : | 
 |                                  (feedback_i == 3'h1) ? {{NBITS_ACC}{1'b0}} : (acc_fir_int << acc_fir); | 
 |  | 
 |     wire [NBITS_ACC-1:0] add_o = add_a + add_b; | 
 |  | 
 |     // Accumulator | 
 |     initial acc <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) acc <= 'h0; | 
 |         else begin | 
 |             if (load_acc) | 
 |                 acc <= add_o; | 
 |             else | 
 |                 acc <= acc; | 
 |         end | 
 |  | 
 |     // Adder/accumulator output selection | 
 |     wire [NBITS_ACC-1:0] acc_out = (output_select_i[1]) ? add_o : acc; | 
 |  | 
 |     // Round, shift, saturate | 
 |     wire [NBITS_ACC-1:0] acc_rnd = (rnd && (shift_right_i != 0)) ? (acc_out + ({{(NBITS_ACC-1){1'b0}}, 1'b1} << (shift_right_i - 1))) : | 
 |                                                                     acc_out; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_shr = (unsigned_mode) ? (acc_rnd  >> shift_right_i) : | 
 |                                                      (acc_rnd >>> shift_right_i); | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat_u = (acc_shr[NBITS_ACC-1:NBITS_Z] != 0) ? {{(NBITS_ACC-NBITS_Z){1'b0}},{NBITS_Z{1'b1}}} : | 
 |                                                                            {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_Z-1:0]}}; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat_s = ((|acc_shr[NBITS_ACC-1:NBITS_Z-1] == 1'b0) || | 
 |                                       (&acc_shr[NBITS_ACC-1:NBITS_Z-1] == 1'b1)) ? {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_Z-1:0]}} : | 
 |                                                                                    {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_ACC-1],{NBITS_Z-1{~acc_shr[NBITS_ACC-1]}}}}; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat = (sat) ? ((unsigned_mode) ? acc_sat_u : acc_sat_s) : acc_shr; | 
 |  | 
 |     // Output signals | 
 |     wire [NBITS_Z-1:0]  z0; | 
 |     reg  [NBITS_Z-1:0]  z1; | 
 |     wire [NBITS_Z-1:0]  z2; | 
 |  | 
 |     assign z0 = mult_xtnd[NBITS_Z-1:0]; | 
 |     assign z2 = acc_sat[NBITS_Z-1:0]; | 
 |  | 
 |     initial z1 <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) | 
 |             z1 <= 0; | 
 |         else begin | 
 |             z1 <= (output_select_i == 3'b100) ? z0 : z2; | 
 |         end | 
 |  | 
 |     // Output mux | 
 |     assign z_o = (output_select_i == 3'h0) ?   z0 : | 
 |                  (output_select_i == 3'h1) ?   z2 : | 
 |                  (output_select_i == 3'h2) ?   z2 : | 
 |                  (output_select_i == 3'h3) ?   z2 : | 
 |                  (output_select_i == 3'h4) ?   z1 : | 
 |                  (output_select_i == 3'h5) ?   z1 : | 
 |                  (output_select_i == 3'h6) ?   z1 : | 
 |                            z1;  // if output_select_i == 3'h7 | 
 |  | 
 |     // B input delayed passthrough | 
 |     initial dly_b_o <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) | 
 |             dly_b_o <= 0; | 
 |         else | 
 |             dly_b_o <= b_i; | 
 |  | 
 | endmodule | 
 |  | 
 |  | 
 |  | 
 | // ---------------------------------------- // | 
 | // ----- DSP cells simulation modules ----- // | 
 | // ------ Control bits in parameters ------ // | 
 | // ---------------------------------------- // | 
 |  | 
 | module QL_DSP3 ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     output wire [37:0] z, | 
 |     output wire [17:0] dly_b, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       load_acc, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b, | 
 |     input  wire       subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     localparam NBITS_ACC = 64; | 
 |     localparam NBITS_A = 20; | 
 |     localparam NBITS_B = 18; | 
 |     localparam NBITS_Z = 38; | 
 |  | 
 |     // Fractured | 
 |     generate if(F_MODE == 1'b1) begin | 
 |  | 
 |         wire [(NBITS_Z/2)-1:0] dsp_frac0_z; | 
 |         wire [(NBITS_Z/2)-1:0] dsp_frac1_z; | 
 |  | 
 |         wire [(NBITS_B/2)-1:0] dsp_frac0_dly_b; | 
 |         wire [(NBITS_B/2)-1:0] dsp_frac1_dly_b; | 
 |  | 
 |         dsp_t1_sim_cfg_params #( | 
 |             .NBITS_A            (NBITS_A/2), | 
 |             .NBITS_B            (NBITS_B/2), | 
 |             .NBITS_ACC          (NBITS_ACC/2), | 
 |             .NBITS_Z            (NBITS_Z/2), | 
 |             .OUTPUT_SELECT      (OUTPUT_SELECT), | 
 |             .SATURATE_ENABLE    (SATURATE_ENABLE), | 
 |             .SHIFT_RIGHT        (SHIFT_RIGHT), | 
 |             .ROUND              (ROUND), | 
 |             .REGISTER_INPUTS    (REGISTER_INPUTS) | 
 |         ) dsp_frac0 ( | 
 |             .a_i(a[(NBITS_A/2)-1:0]), | 
 |             .b_i(b[(NBITS_B/2)-1:0]), | 
 |             .z_o(dsp_frac0_z), | 
 |             .dly_b_o(dsp_frac0_dly_b), | 
 |  | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .subtract_i(subtract), | 
 |             .coef_0_i(COEFF_0[(NBITS_A/2)-1:0]), | 
 |             .coef_1_i(COEFF_1[(NBITS_A/2)-1:0]), | 
 |             .coef_2_i(COEFF_2[(NBITS_A/2)-1:0]), | 
 |             .coef_3_i(COEFF_3[(NBITS_A/2)-1:0]) | 
 |         ); | 
 |  | 
 |         dsp_t1_sim_cfg_params #( | 
 |             .NBITS_A            (NBITS_A/2), | 
 |             .NBITS_B            (NBITS_B/2), | 
 |             .NBITS_ACC          (NBITS_ACC/2), | 
 |             .NBITS_Z            (NBITS_Z/2), | 
 |             .OUTPUT_SELECT      (OUTPUT_SELECT), | 
 |             .SATURATE_ENABLE    (SATURATE_ENABLE), | 
 |             .SHIFT_RIGHT        (SHIFT_RIGHT), | 
 |             .ROUND              (ROUND), | 
 |             .REGISTER_INPUTS    (REGISTER_INPUTS) | 
 |         ) dsp_frac1 ( | 
 |             .a_i(a[NBITS_A-1:NBITS_A/2]), | 
 |             .b_i(b[NBITS_B-1:NBITS_B/2]), | 
 |             .z_o(dsp_frac1_z), | 
 |             .dly_b_o(dsp_frac1_dly_b), | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .subtract_i(subtract), | 
 |             .coef_0_i(COEFF_0[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_1_i(COEFF_1[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_2_i(COEFF_2[NBITS_A-1:NBITS_A/2]), | 
 |             .coef_3_i(COEFF_3[NBITS_A-1:NBITS_A/2]) | 
 |         ); | 
 |  | 
 |         assign z = {dsp_frac1_z, dsp_frac0_z}; | 
 |         assign dly_b = {dsp_frac1_dly_b, dsp_frac0_dly_b}; | 
 |  | 
 |     // Whole | 
 |     end else begin | 
 |  | 
 |         dsp_t1_sim_cfg_params #( | 
 |             .NBITS_A            (NBITS_A), | 
 |             .NBITS_B            (NBITS_B), | 
 |             .NBITS_ACC          (NBITS_ACC), | 
 |             .NBITS_Z            (NBITS_Z), | 
 |             .OUTPUT_SELECT      (OUTPUT_SELECT), | 
 |             .SATURATE_ENABLE    (SATURATE_ENABLE), | 
 |             .SHIFT_RIGHT        (SHIFT_RIGHT), | 
 |             .ROUND              (ROUND), | 
 |             .REGISTER_INPUTS    (REGISTER_INPUTS) | 
 |         ) dsp_full ( | 
 |             .a_i(a), | 
 |             .b_i(b), | 
 |             .z_o(z), | 
 |             .dly_b_o(dly_b), | 
 |  | 
 |             .acc_fir_i(acc_fir), | 
 |             .feedback_i(feedback), | 
 |             .load_acc_i(load_acc), | 
 |  | 
 |             .unsigned_a_i(unsigned_a), | 
 |             .unsigned_b_i(unsigned_b), | 
 |  | 
 |             .clock_i(clk), | 
 |             .s_reset(reset), | 
 |  | 
 |             .subtract_i(subtract), | 
 |             .coef_0_i(COEFF_0), | 
 |             .coef_1_i(COEFF_1), | 
 |             .coef_2_i(COEFF_2), | 
 |             .coef_3_i(COEFF_3) | 
 |         ); | 
 |  | 
 |     end endgenerate | 
 |  | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81];    // unregistered output: a * b (0) | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92];       // unregistered inputs | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .reset(reset), | 
 |  | 
 |         .feedback(feedback), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULT_REGIN ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |  | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b | 
 | ); | 
 |  | 
 |     wire [37:0] dly_b_o; | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81];    // unregistered output: a * b (0) | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92];       // registered inputs | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULT_REGOUT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |  | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81];    // registered output: a * b (4) | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92];       // unregistered inputs | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULT_REGIN_REGOUT ( // TODO: Name subject to change | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire       clk, | 
 |     input  wire       reset, | 
 |  | 
 |     input  wire [2:0] feedback, | 
 |  | 
 |     input  wire       unsigned_a, | 
 |     input  wire       unsigned_b | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81];    // registered output: a * b (4) | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92];       // unregistered inputs | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTADD ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTADD_REGIN ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTADD_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTADD_REGIN_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire [ 5:0] acc_fir, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .acc_fir(acc_fir), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTACC ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTACC_REGIN ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTACC_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module QL_DSP3_MULTACC_REGIN_REGOUT ( | 
 |     input  wire [19:0] a, | 
 |     input  wire [17:0] b, | 
 |     output wire [37:0] z, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clk, | 
 |     input  wire        reset, | 
 |  | 
 |     input  wire [ 2:0] feedback, | 
 |     input  wire        load_acc, | 
 |     input  wire        unsigned_a, | 
 |     input  wire        unsigned_b, | 
 |     input  wire        subtract | 
 | ); | 
 |  | 
 |     parameter [92:0] MODE_BITS = 93'b0; | 
 |  | 
 |     localparam [19:0] COEFF_0 = MODE_BITS[19:0]; | 
 |     localparam [19:0] COEFF_1 = MODE_BITS[39:20]; | 
 |     localparam [19:0] COEFF_2 = MODE_BITS[59:40]; | 
 |     localparam [19:0] COEFF_3 = MODE_BITS[79:60]; | 
 |  | 
 |     localparam [0:0] F_MODE          = MODE_BITS[80]; | 
 |     localparam [2:0] OUTPUT_SELECT   = MODE_BITS[83:81]; | 
 |     localparam [0:0] SATURATE_ENABLE = MODE_BITS[84]; | 
 |     localparam [5:0] SHIFT_RIGHT     = MODE_BITS[90:85]; | 
 |     localparam [0:0] ROUND           = MODE_BITS[91]; | 
 |     localparam [0:0] REGISTER_INPUTS = MODE_BITS[92]; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             F_MODE, | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a), | 
 |         .b(b), | 
 |         .z(z), | 
 |  | 
 |         .feedback(feedback), | 
 |         .load_acc(load_acc), | 
 |  | 
 |         .unsigned_a(unsigned_a), | 
 |         .unsigned_b(unsigned_b), | 
 |  | 
 |         .clk(clk), | 
 |         .reset(reset), | 
 |         .subtract(subtract) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module dsp_t1_20x18x64_cfg_params ( | 
 |     input  wire [19:0] a_i, | 
 |     input  wire [17:0] b_i, | 
 |     input  wire [ 5:0] acc_fir_i, | 
 |     output wire [37:0] z_o, | 
 |     output wire [17:0] dly_b_o, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clock_i, | 
 |     input  wire        reset_i, | 
 |  | 
 |     input  wire [ 2:0] feedback_i, | 
 |     input  wire        load_acc_i, | 
 |     input  wire        unsigned_a_i, | 
 |     input  wire        unsigned_b_i, | 
 |     input  wire        subtract_i | 
 | ); | 
 |  | 
 |     parameter [19:0] COEFF_0 = 20'b0; | 
 |     parameter [19:0] COEFF_1 = 20'b0; | 
 |     parameter [19:0] COEFF_2 = 20'b0; | 
 |     parameter [19:0] COEFF_3 = 20'b0; | 
 |  | 
 |     parameter [2:0] OUTPUT_SELECT   = 3'b0; | 
 |     parameter [0:0] SATURATE_ENABLE = 1'b0; | 
 |     parameter [5:0] SHIFT_RIGHT     = 6'b0; | 
 |     parameter [0:0] ROUND           = 1'b0; | 
 |     parameter [0:0] REGISTER_INPUTS = 1'b0; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS ({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             1'b0, // Not fractured | 
 |             COEFF_3, | 
 |             COEFF_2, | 
 |             COEFF_1, | 
 |             COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a(a_i), | 
 |         .b(b_i), | 
 |         .z(z_o), | 
 |         .dly_b(dly_b_o), | 
 |  | 
 |         .acc_fir(acc_fir_i), | 
 |         .feedback(feedback_i), | 
 |         .load_acc(load_acc_i), | 
 |  | 
 |         .unsigned_a(unsigned_a_i), | 
 |         .unsigned_b(unsigned_b_i), | 
 |  | 
 |         .clk(clock_i), | 
 |         .reset(reset_i), | 
 |         .subtract(subtract_i) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module dsp_t1_10x9x32_cfg_params ( | 
 |     input  wire [ 9:0] a_i, | 
 |     input  wire [ 8:0] b_i, | 
 |     input  wire [ 5:0] acc_fir_i, | 
 |     output wire [18:0] z_o, | 
 |     output wire [ 8:0] dly_b_o, | 
 |  | 
 |     (* clkbuf_sink *) | 
 |     input  wire        clock_i, | 
 |     input  wire        reset_i, | 
 |  | 
 |     input  wire [ 2:0] feedback_i, | 
 |     input  wire        load_acc_i, | 
 |     input  wire        unsigned_a_i, | 
 |     input  wire        unsigned_b_i, | 
 |     input  wire        subtract_i | 
 | ); | 
 |  | 
 |     parameter [9:0] COEFF_0 = 10'b0; | 
 |     parameter [9:0] COEFF_1 = 10'b0; | 
 |     parameter [9:0] COEFF_2 = 10'b0; | 
 |     parameter [9:0] COEFF_3 = 10'b0; | 
 |  | 
 |     parameter [2:0] OUTPUT_SELECT   = 3'b0; | 
 |     parameter [0:0] SATURATE_ENABLE = 1'b0; | 
 |     parameter [5:0] SHIFT_RIGHT     = 6'b0; | 
 |     parameter [0:0] ROUND           = 1'b0; | 
 |     parameter [0:0] REGISTER_INPUTS = 1'b0; | 
 |  | 
 |     wire [18:0] z_rem; | 
 |     wire [8:0] dly_b_rem; | 
 |  | 
 |     QL_DSP3 #( | 
 |         .MODE_BITS ({ | 
 |             REGISTER_INPUTS, | 
 |             ROUND, | 
 |             SHIFT_RIGHT, | 
 |             SATURATE_ENABLE, | 
 |             OUTPUT_SELECT, | 
 |             1'b1, // Fractured | 
 |             10'd0, COEFF_3, | 
 |             10'd0, COEFF_2, | 
 |             10'd0, COEFF_1, | 
 |             10'd0, COEFF_0 | 
 |         }) | 
 |     ) dsp ( | 
 |         .a({10'b0, a_i}), | 
 |         .b({9'b0, b_i}), | 
 |         .z({z_rem, z_o}), | 
 |         .dly_b({dly_b_rem, dly_b_o}), | 
 |  | 
 |         .acc_fir(acc_fir_i), | 
 |         .feedback(feedback_i), | 
 |         .load_acc(load_acc_i), | 
 |  | 
 |         .unsigned_a(unsigned_a_i), | 
 |         .unsigned_b(unsigned_b_i), | 
 |  | 
 |         .clk(clock_i), | 
 |         .reset(reset_i), | 
 |         .subtract(subtract_i) | 
 |     ); | 
 | endmodule | 
 |  | 
 | module dsp_t1_sim_cfg_params # ( | 
 |     parameter NBITS_ACC  = 64, | 
 |     parameter NBITS_A    = 20, | 
 |     parameter NBITS_B    = 18, | 
 |     parameter NBITS_Z    = 38, | 
 |  | 
 |     parameter [2:0] OUTPUT_SELECT   = 3'b0, | 
 |     parameter [0:0] SATURATE_ENABLE = 1'b0, | 
 |     parameter [5:0] SHIFT_RIGHT     = 6'b0, | 
 |     parameter [0:0] ROUND           = 1'b0, | 
 |     parameter [0:0] REGISTER_INPUTS = 1'b0 | 
 | )( | 
 |     input  wire [NBITS_A-1:0] a_i, | 
 |     input  wire [NBITS_B-1:0] b_i, | 
 |     output wire [NBITS_Z-1:0] z_o, | 
 |     output reg  [NBITS_B-1:0] dly_b_o, | 
 |  | 
 |     input  wire [5:0]         acc_fir_i, | 
 |     input  wire [2:0]         feedback_i, | 
 |     input  wire               load_acc_i, | 
 |  | 
 |     input  wire               unsigned_a_i, | 
 |     input  wire               unsigned_b_i, | 
 |  | 
 |     input  wire               clock_i, | 
 |     input  wire               s_reset, | 
 |  | 
 |     input  wire               subtract_i, | 
 |     input  wire [NBITS_A-1:0] coef_0_i, | 
 |     input  wire [NBITS_A-1:0] coef_1_i, | 
 |     input  wire [NBITS_A-1:0] coef_2_i, | 
 |     input  wire [NBITS_A-1:0] coef_3_i | 
 | ); | 
 |  | 
 | // FIXME: The version of Icarus Verilog from Conda seems not to recognize the | 
 | // $error macro. Disable this sanity check for now because of that. | 
 |  | 
 |     // Input registers | 
 |     reg  [NBITS_A-1:0]  r_a; | 
 |     reg  [NBITS_B-1:0]  r_b; | 
 |     reg  [5:0]          r_acc_fir; | 
 |     reg                 r_unsigned_a; | 
 |     reg                 r_unsigned_b; | 
 |     reg                 r_load_acc; | 
 |     reg  [2:0]          r_feedback; | 
 |     reg  [5:0]          r_shift_d1; | 
 |     reg  [5:0]          r_shift_d2; | 
 |     reg         r_subtract; | 
 |     reg         r_sat; | 
 |     reg         r_rnd; | 
 |     reg [NBITS_ACC-1:0] acc; | 
 |  | 
 |     initial begin | 
 |         r_a          <= 0; | 
 |         r_b          <= 0; | 
 |  | 
 |         r_acc_fir    <= 0; | 
 |         r_unsigned_a <= 0; | 
 |         r_unsigned_b <= 0; | 
 |         r_feedback   <= 0; | 
 |         r_shift_d1   <= 0; | 
 |         r_shift_d2   <= 0; | 
 |         r_subtract   <= 0; | 
 |         r_load_acc   <= 0; | 
 |         r_sat        <= 0; | 
 |         r_rnd        <= 0; | 
 |     end | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) begin | 
 |         if (s_reset) begin | 
 |  | 
 |             r_a <= 'h0; | 
 |             r_b <= 'h0; | 
 |  | 
 |             r_acc_fir    <= 0; | 
 |             r_unsigned_a <= 0; | 
 |             r_unsigned_b <= 0; | 
 |             r_feedback   <= 0; | 
 |             r_shift_d1   <= 0; | 
 |             r_shift_d2   <= 0; | 
 |             r_subtract   <= 0; | 
 |             r_load_acc   <= 0; | 
 |             r_sat    <= 0; | 
 |             r_rnd    <= 0; | 
 |  | 
 |         end else begin | 
 |  | 
 |             r_a <= a_i; | 
 |             r_b <= b_i; | 
 |  | 
 |             r_acc_fir    <= acc_fir_i; | 
 |             r_unsigned_a <= unsigned_a_i; | 
 |             r_unsigned_b <= unsigned_b_i; | 
 |             r_feedback   <= feedback_i; | 
 |             r_shift_d1   <= SHIFT_RIGHT; | 
 |             r_shift_d2   <= r_shift_d1; | 
 |             r_subtract   <= subtract_i; | 
 |             r_load_acc   <= load_acc_i; | 
 |             r_sat    <= r_sat; | 
 |             r_rnd    <= r_rnd; | 
 |  | 
 |         end | 
 |     end | 
 |  | 
 |     // Registered / non-registered input path select | 
 |     wire [NBITS_A-1:0]  a = REGISTER_INPUTS ? r_a : a_i; | 
 |     wire [NBITS_B-1:0]  b = REGISTER_INPUTS ? r_b : b_i; | 
 |  | 
 |     wire [5:0] acc_fir = REGISTER_INPUTS ? r_acc_fir : acc_fir_i; | 
 |     wire       unsigned_a = REGISTER_INPUTS ? r_unsigned_a : unsigned_a_i; | 
 |     wire       unsigned_b = REGISTER_INPUTS ? r_unsigned_b : unsigned_b_i; | 
 |     wire [2:0] feedback   = REGISTER_INPUTS ? r_feedback   : feedback_i; | 
 |     wire       load_acc   = REGISTER_INPUTS ? r_load_acc   : load_acc_i; | 
 |     wire       subtract   = REGISTER_INPUTS ? r_subtract   : subtract_i; | 
 |     wire       sat    = REGISTER_INPUTS ? r_sat : SATURATE_ENABLE; | 
 |     wire       rnd    = REGISTER_INPUTS ? r_rnd : ROUND; | 
 |  | 
 |     // Shift right control | 
 |     wire [5:0] shift_d1 = REGISTER_INPUTS ? r_shift_d1 : SHIFT_RIGHT; | 
 |     wire [5:0] shift_d2 = OUTPUT_SELECT[1] ? shift_d1 : r_shift_d2; | 
 |  | 
 |     // Multiplier | 
 |     wire unsigned_mode = unsigned_a & unsigned_b; | 
 |     wire [NBITS_A-1:0] mult_a; | 
 |     assign mult_a = (feedback == 3'h0) ?   a : | 
 |                     (feedback == 3'h1) ?   a : | 
 |                     (feedback == 3'h2) ?   a : | 
 |                     (feedback == 3'h3) ?   acc[NBITS_A-1:0] : | 
 |                     (feedback == 3'h4) ?   coef_0_i : | 
 |                     (feedback == 3'h5) ?   coef_1_i : | 
 |                     (feedback == 3'h6) ?   coef_2_i : | 
 |                        coef_3_i;    // if feedback == 3'h7 | 
 |  | 
 |     wire [NBITS_B-1:0] mult_b = (feedback == 2'h2) ? {NBITS_B{1'b0}}  : b; | 
 |  | 
 |     wire [NBITS_A-1:0] mult_sgn_a = mult_a[NBITS_A-1]; | 
 |     wire [NBITS_A-1:0] mult_mag_a = (mult_sgn_a && !unsigned_a) ? (~mult_a + 1) : mult_a; | 
 |     wire [NBITS_B-1:0] mult_sgn_b = mult_b[NBITS_B-1]; | 
 |     wire [NBITS_B-1:0] mult_mag_b = (mult_sgn_b && !unsigned_b) ? (~mult_b + 1) : mult_b; | 
 |  | 
 |     wire [NBITS_A+NBITS_B-1:0] mult_mag = mult_mag_a * mult_mag_b; | 
 |     wire mult_sgn = (mult_sgn_a && !unsigned_a) ^ (mult_sgn_b && !unsigned_b); | 
 |  | 
 |     wire [NBITS_A+NBITS_B-1:0] mult = (unsigned_a && unsigned_b) ? | 
 |         (mult_a * mult_b) : (mult_sgn ? (~mult_mag + 1) : mult_mag); | 
 |  | 
 |     // Sign extension | 
 |     wire [NBITS_ACC-1:0] mult_xtnd = unsigned_mode ? | 
 |         {{(NBITS_ACC-NBITS_A-NBITS_B){1'b0}},                    mult[NBITS_A+NBITS_B-1:0]} : | 
 |         {{(NBITS_ACC-NBITS_A-NBITS_B){mult[NBITS_A+NBITS_B-1]}}, mult[NBITS_A+NBITS_B-1:0]}; | 
 |  | 
 |     // Adder | 
 |     wire [NBITS_ACC-1:0] acc_fir_int = unsigned_a ? {{(NBITS_ACC-NBITS_A){1'b0}},         a} : | 
 |                                                     {{(NBITS_ACC-NBITS_A){a[NBITS_A-1]}}, a} ; | 
 |  | 
 |     wire [NBITS_ACC-1:0] add_a = (subtract) ? (~mult_xtnd + 1) : mult_xtnd; | 
 |     wire [NBITS_ACC-1:0] add_b = (feedback_i == 3'h0) ? acc : | 
 |                                  (feedback_i == 3'h1) ? {{NBITS_ACC}{1'b0}} : (acc_fir_int << acc_fir); | 
 |  | 
 |     wire [NBITS_ACC-1:0] add_o = add_a + add_b; | 
 |  | 
 |     // Accumulator | 
 |     initial acc <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) acc <= 'h0; | 
 |         else begin | 
 |             if (load_acc) | 
 |                 acc <= add_o; | 
 |             else | 
 |                 acc <= acc; | 
 |         end | 
 |  | 
 |     // Adder/accumulator output selection | 
 |     wire [NBITS_ACC-1:0] acc_out = (OUTPUT_SELECT[1]) ? add_o : acc; | 
 |  | 
 |     // Round, shift, saturate | 
 |     wire [NBITS_ACC-1:0] acc_rnd = (rnd && (SHIFT_RIGHT != 0)) ? (acc_out + ({{(NBITS_ACC-1){1'b0}}, 1'b1} << (SHIFT_RIGHT - 1))) : | 
 |                                                                     acc_out; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_shr = (unsigned_mode) ? (acc_rnd  >> SHIFT_RIGHT) : | 
 |                                                      (acc_rnd >>> SHIFT_RIGHT); | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat_u = (acc_shr[NBITS_ACC-1:NBITS_Z] != 0) ? {{(NBITS_ACC-NBITS_Z){1'b0}},{NBITS_Z{1'b1}}} : | 
 |                                                                            {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_Z-1:0]}}; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat_s = ((|acc_shr[NBITS_ACC-1:NBITS_Z-1] == 1'b0) || | 
 |                                       (&acc_shr[NBITS_ACC-1:NBITS_Z-1] == 1'b1)) ? {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_Z-1:0]}} : | 
 |                                                                                    {{(NBITS_ACC-NBITS_Z){1'b0}},{acc_shr[NBITS_ACC-1],{NBITS_Z-1{~acc_shr[NBITS_ACC-1]}}}}; | 
 |  | 
 |     wire [NBITS_ACC-1:0] acc_sat = (sat) ? ((unsigned_mode) ? acc_sat_u : acc_sat_s) : acc_shr; | 
 |  | 
 |     // Output signals | 
 |     wire [NBITS_Z-1:0]  z0; | 
 |     reg  [NBITS_Z-1:0]  z1; | 
 |     wire [NBITS_Z-1:0]  z2; | 
 |  | 
 |     assign z0 = mult_xtnd[NBITS_Z-1:0]; | 
 |     assign z2 = acc_sat[NBITS_Z-1:0]; | 
 |  | 
 |     initial z1 <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) | 
 |             z1 <= 0; | 
 |         else begin | 
 |             z1 <= (OUTPUT_SELECT == 3'b100) ? z0 : z2; | 
 |         end | 
 |  | 
 |     // Output mux | 
 |     assign z_o = (OUTPUT_SELECT == 3'h0) ?   z0 : | 
 |                  (OUTPUT_SELECT == 3'h1) ?   z2 : | 
 |                  (OUTPUT_SELECT == 3'h2) ?   z2 : | 
 |                  (OUTPUT_SELECT == 3'h3) ?   z2 : | 
 |                  (OUTPUT_SELECT == 3'h4) ?   z1 : | 
 |                  (OUTPUT_SELECT == 3'h5) ?   z1 : | 
 |                  (OUTPUT_SELECT == 3'h6) ?   z1 : | 
 |                            z1;  // if OUTPUT_SELECT == 3'h7 | 
 |  | 
 |     // B input delayed passthrough | 
 |     initial dly_b_o <= 0; | 
 |  | 
 |     always @(posedge clock_i or posedge s_reset) | 
 |         if (s_reset) | 
 |             dly_b_o <= 0; | 
 |         else | 
 |             dly_b_o <= b_i; | 
 |  | 
 | endmodule |