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filter_tb.v
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`timescale 1ns / 1ps
module testbench;
// All Parameters and Inputs
// Params
localparam ORDER = 4;
localparam FAC = 20;
localparam BITWIDTH = 32;
localparam GAINL = 0;
localparam GAINM = 0;
localparam HTP = 10;
// Params End
reg clk, reset;
reg signed [BITWIDTH-1:0] x;
wire signed [BITWIDTH-1:0] y;
// Instantiate the Unit Under Test (DUT)
iir_N #(.N(ORDER), .BITWIDTH(BITWIDTH), .FAC(FAC), .GAINL(GAINL), .GAINM(GAINM)) DUT(
.clk(clk),
.rst(reset),
.x(x),
.y(y)
);
// Generate clock with 2*htp period
initial clk = 0;
always #HTP clk = ~clk;
always @(posedge(clk)) $display("x = %.0f, y = %.0f", x, y);
initial begin
// Begin Init Sequence
x = {(BITWIDTH-1){1'b0}};
reset = 1;
clk = 0;
clk = 1;
#10;
reset = 0;
#20;
// Input Stimuli - Python Script adds input lines using Stimuli and Stimuli End comment
//{
// Stimuli
#(2*HTP); x = 25;
#(2*HTP); x = 10;
#(2*HTP); x = 25;
#(2*HTP); x = 10;
#(2*HTP); x = 67;
#(2*HTP); x = -56;
#(2*HTP); x = 19;
#(2*HTP); x = 28;
#(2*HTP); x = 160;
#(2*HTP); x = 39;
#(2*HTP); x = 142;
#(2*HTP); x = 151;
#(2*HTP); x = 117;
#(2*HTP); x = 294;
#(2*HTP); x = 199;
#(2*HTP); x = 363;
#(2*HTP); x = 100;
#(2*HTP); x = 525;
#(2*HTP); x = 78;
#(2*HTP); x = 195;
#(2*HTP); x = -19;
#(2*HTP); x = 147;
#(2*HTP); x = 515;
#(2*HTP); x = 373;
#(2*HTP); x = 110;
#(2*HTP); x = 389;
#(2*HTP); x = 161;
#(2*HTP); x = -98;
#(2*HTP); x = 198;
#(2*HTP); x = 673;
#(2*HTP); x = 338;
#(2*HTP); x = -79;
#(2*HTP); x = 424;
#(2*HTP); x = 653;
#(2*HTP); x = 269;
#(2*HTP); x = 241;
#(2*HTP); x = 374;
#(2*HTP); x = 92;
#(2*HTP); x = 296;
#(2*HTP); x = 707;
#(2*HTP); x = 46;
#(2*HTP); x = 212;
#(2*HTP); x = 262;
#(2*HTP); x = 251;
#(2*HTP); x = 315;
#(2*HTP); x = 94;
#(2*HTP); x = -26;
#(2*HTP); x = 84;
#(2*HTP); x = -286;
#(2*HTP); x = 18;
#(2*HTP); x = 459;
#(2*HTP); x = -86;
#(2*HTP); x = 70;
#(2*HTP); x = 77;
#(2*HTP); x = 38;
#(2*HTP); x = -44;
#(2*HTP); x = -200;
#(2*HTP); x = -27;
#(2*HTP); x = -67;
#(2*HTP); x = -100;
#(2*HTP); x = -33;
#(2*HTP); x = -199;
#(2*HTP); x = -407;
#(2*HTP); x = -343;
#(2*HTP); x = -78;
#(2*HTP); x = -28;
#(2*HTP); x = -358;
#(2*HTP); x = -503;
#(2*HTP); x = -454;
#(2*HTP); x = -75;
#(2*HTP); x = -101;
#(2*HTP); x = -133;
#(2*HTP); x = -103;
#(2*HTP); x = -299;
#(2*HTP); x = -267;
#(2*HTP); x = -161;
#(2*HTP); x = -123;
#(2*HTP); x = 191;
#(2*HTP); x = -482;
#(2*HTP); x = -272;
#(2*HTP); x = -206;
#(2*HTP); x = -506;
#(2*HTP); x = -562;
#(2*HTP); x = -238;
#(2*HTP); x = -396;
#(2*HTP); x = -249;
#(2*HTP); x = -421;
#(2*HTP); x = -245;
#(2*HTP); x = -193;
#(2*HTP); x = -624;
#(2*HTP); x = -37;
#(2*HTP); x = -554;
#(2*HTP); x = -101;
#(2*HTP); x = -129;
#(2*HTP); x = -70;
#(2*HTP); x = 197;
#(2*HTP); x = -374;
#(2*HTP); x = -191;
#(2*HTP); x = -186;
#(2*HTP); x = 278;
#(2*HTP); x = 253;
#(2*HTP); x = 156;
#(2*HTP); x = -260;
#(2*HTP); x = -30;
#(2*HTP); x = 179;
#(2*HTP); x = 164;
#(2*HTP); x = -10;
#(2*HTP); x = 423;
#(2*HTP); x = 39;
#(2*HTP); x = 241;
#(2*HTP); x = 568;
#(2*HTP); x = 532;
#(2*HTP); x = 174;
#(2*HTP); x = 371;
#(2*HTP); x = 562;
#(2*HTP); x = 66;
#(2*HTP); x = 445;
#(2*HTP); x = 628;
#(2*HTP); x = 471;
#(2*HTP); x = 522;
#(2*HTP); x = 290;
#(2*HTP); x = 47;
#(2*HTP); x = 157;
#(2*HTP); x = 597;
#(2*HTP); x = 314;
#(2*HTP); x = 458;
#(2*HTP); x = 102;
#(2*HTP); x = -47;
#(2*HTP); x = -105;
#(2*HTP); x = 338;
#(2*HTP); x = -133;
#(2*HTP); x = 543;
#(2*HTP); x = 479;
#(2*HTP); x = 307;
#(2*HTP); x = 435;
#(2*HTP); x = 206;
#(2*HTP); x = -133;
#(2*HTP); x = 174;
#(2*HTP); x = 55;
#(2*HTP); x = 405;
#(2*HTP); x = 216;
#(2*HTP); x = 211;
#(2*HTP); x = 45;
#(2*HTP); x = -72;
#(2*HTP); x = 131;
#(2*HTP); x = -23;
#(2*HTP); x = 301;
#(2*HTP); x = -49;
#(2*HTP); x = -150;
#(2*HTP); x = -61;
#(2*HTP); x = 165;
#(2*HTP); x = -166;
#(2*HTP); x = -96;
#(2*HTP); x = -374;
#(2*HTP); x = -92;
#(2*HTP); x = -205;
#(2*HTP); x = -234;
#(2*HTP); x = -140;
#(2*HTP); x = -178;
#(2*HTP); x = -198;
#(2*HTP); x = 354;
#(2*HTP); x = -29;
#(2*HTP); x = 80;
#(2*HTP); x = 65;
#(2*HTP); x = -314;
#(2*HTP); x = -361;
#(2*HTP); x = -591;
#(2*HTP); x = -467;
#(2*HTP); x = -344;
#(2*HTP); x = -311;
#(2*HTP); x = -236;
#(2*HTP); x = -270;
#(2*HTP); x = -525;
#(2*HTP); x = -361;
#(2*HTP); x = 30;
#(2*HTP); x = -351;
#(2*HTP); x = -464;
#(2*HTP); x = -332;
#(2*HTP); x = -214;
#(2*HTP); x = -342;
#(2*HTP); x = -341;
#(2*HTP); x = -314;
#(2*HTP); x = -13;
#(2*HTP); x = -67;
#(2*HTP); x = -354;
#(2*HTP); x = -339;
#(2*HTP); x = -512;
#(2*HTP); x = 46;
#(2*HTP); x = -170;
#(2*HTP); x = -179;
#(2*HTP); x = -81;
#(2*HTP); x = -342;
#(2*HTP); x = -252;
#(2*HTP); x = -24;
#(2*HTP); x = -100;
#(2*HTP); x = -409;
#(2*HTP); x = -146;
#(2*HTP); x = 70;
#(2*HTP); x = 242;
#(2*HTP); x = 76;
#(2*HTP); x = 105;
#(2*HTP); x = 5;
#(2*HTP); x = 155;
#(2*HTP); x = 236;
#(2*HTP); x = -21;
#(2*HTP); x = 366;
#(2*HTP); x = -132;
#(2*HTP); x = 189;
#(2*HTP); x = 168;
#(2*HTP); x = 538;
#(2*HTP); x = 179;
#(2*HTP); x = 861;
#(2*HTP); x = 208;
#(2*HTP); x = 133;
#(2*HTP); x = 718;
#(2*HTP); x = 280;
#(2*HTP); x = 241;
#(2*HTP); x = 322;
#(2*HTP); x = 107;
#(2*HTP); x = 22;
#(2*HTP); x = 178;
#(2*HTP); x = 312;
#(2*HTP); x = 514;
#(2*HTP); x = 524;
#(2*HTP); x = 381;
#(2*HTP); x = 511;
#(2*HTP); x = 775;
#(2*HTP); x = 393;
#(2*HTP); x = 443;
#(2*HTP); x = 192;
#(2*HTP); x = 466;
#(2*HTP); x = 12;
#(2*HTP); x = 149;
#(2*HTP); x = 35;
#(2*HTP); x = 77;
#(2*HTP); x = 545;
#(2*HTP); x = 111;
#(2*HTP); x = 52;
#(2*HTP); x = 311;
#(2*HTP); x = 36;
#(2*HTP); x = 139;
#(2*HTP); x = 164;
#(2*HTP); x = -126;
#(2*HTP); x = -47;
#(2*HTP); x = 365;
#(2*HTP); x = 6;
#(2*HTP); x = 133;
#(2*HTP); x = 184;
#(2*HTP); x = 32;
#(2*HTP); x = -72;
#(2*HTP); x = 129;
#(2*HTP); x = -372;
#(2*HTP); x = 80;
#(2*HTP); x = -567;
#(2*HTP); x = -423;
#(2*HTP); x = -279;
#(2*HTP); x = -228;
#(2*HTP); x = -536;
#(2*HTP); x = -90;
#(2*HTP); x = -264;
#(2*HTP); x = -469;
#(2*HTP); x = -496;
#(2*HTP); x = -460;
#(2*HTP); x = -443;
#(2*HTP); x = -314;
#(2*HTP); x = -304;
#(2*HTP); x = -408;
#(2*HTP); x = -315;
#(2*HTP); x = -423;
#(2*HTP); x = -265;
#(2*HTP); x = -2;
#(2*HTP); x = -130;
#(2*HTP); x = -368;
#(2*HTP); x = -256;
#(2*HTP); x = -307;
#(2*HTP); x = -350;
#(2*HTP); x = -320;
#(2*HTP); x = -38;
#(2*HTP); x = -342;
#(2*HTP); x = -190;
#(2*HTP); x = -95;
#(2*HTP); x = -395;
#(2*HTP); x = -470;
#(2*HTP); x = -21;
#(2*HTP); x = -77;
#(2*HTP); x = -235;
#(2*HTP); x = 100;
#(2*HTP); x = -36;
#(2*HTP); x = -155;
#(2*HTP); x = -143;
#(2*HTP); x = -134;
#(2*HTP); x = -228;
#(2*HTP); x = 519;
#(2*HTP); x = -412;
#(2*HTP); x = 91;
#(2*HTP); x = 60;
#(2*HTP); x = -166;
#(2*HTP); x = 68;
#(2*HTP); x = 189;
#(2*HTP); x = 328;
#(2*HTP); x = 171;
#(2*HTP); x = 278;
#(2*HTP); x = 516;
#(2*HTP); x = 177;
#(2*HTP); x = 103;
#(2*HTP); x = -46;
#(2*HTP); x = 399;
#(2*HTP); x = 152;
#(2*HTP); x = 530;
#(2*HTP); x = 283;
#(2*HTP); x = 251;
#(2*HTP); x = 177;
#(2*HTP); x = 192;
#(2*HTP); x = 54;
#(2*HTP); x = 411;
#(2*HTP); x = 219;
#(2*HTP); x = 421;
#(2*HTP); x = -22;
#(2*HTP); x = 362;
#(2*HTP); x = 120;
#(2*HTP); x = -7;
#(2*HTP); x = 239;
#(2*HTP); x = 394;
#(2*HTP); x = 465;
#(2*HTP); x = 494;
#(2*HTP); x = 177;
#(2*HTP); x = 56;
#(2*HTP); x = 802;
#(2*HTP); x = 108;
#(2*HTP); x = 64;
#(2*HTP); x = 273;
#(2*HTP); x = -37;
#(2*HTP); x = 24;
#(2*HTP); x = -156;
#(2*HTP); x = 77;
#(2*HTP); x = -117;
#(2*HTP); x = 152;
#(2*HTP); x = 95;
#(2*HTP); x = -97;
#(2*HTP); x = -53;
#(2*HTP); x = -108;
#(2*HTP); x = 12;
#(2*HTP); x = -163;
#(2*HTP); x = -8;
#(2*HTP); x = -239;
#(2*HTP); x = 15;
#(2*HTP); x = -146;
#(2*HTP); x = -521;
#(2*HTP); x = -114;
#(2*HTP); x = 12;
#(2*HTP); x = 56;
#(2*HTP); x = -155;
#(2*HTP); x = 68;
#(2*HTP); x = -95;
#(2*HTP); x = 160;
#(2*HTP); x = -199;
#(2*HTP); x = -169;
#(2*HTP); x = -187;
#(2*HTP); x = -172;
#(2*HTP); x = -127;
#(2*HTP); x = -89;
#(2*HTP); x = -480;
#(2*HTP); x = -542;
#(2*HTP); x = -47;
#(2*HTP); x = -117;
#(2*HTP); x = -459;
#(2*HTP); x = -306;
#(2*HTP); x = 55;
#(2*HTP); x = -508;
#(2*HTP); x = -222;
#(2*HTP); x = -539;
#(2*HTP); x = -236;
#(2*HTP); x = -202;
#(2*HTP); x = -283;
#(2*HTP); x = -60;
#(2*HTP); x = -252;
#(2*HTP); x = 12;
#(2*HTP); x = 9;
#(2*HTP); x = -235;
#(2*HTP); x = -118;
#(2*HTP); x = -110;
#(2*HTP); x = 50;
#(2*HTP); x = 120;
#(2*HTP); x = 54;
#(2*HTP); x = -73;
#(2*HTP); x = -227;
#(2*HTP); x = -282;
#(2*HTP); x = 188;
#(2*HTP); x = 377;
#(2*HTP); x = 71;
#(2*HTP); x = 26;
#(2*HTP); x = 236;
#(2*HTP); x = -239;
#(2*HTP); x = 47;
#(2*HTP); x = -262;
#(2*HTP); x = 214;
#(2*HTP); x = 156;
#(2*HTP); x = 229;
#(2*HTP); x = 102;
#(2*HTP); x = -154;
#(2*HTP); x = 400;
#(2*HTP); x = 103;
#(2*HTP); x = 272;
#(2*HTP); x = 429;
#(2*HTP); x = 368;
#(2*HTP); x = 113;
#(2*HTP); x = 228;
#(2*HTP); x = 243;
#(2*HTP); x = 477;
#(2*HTP); x = 537;
#(2*HTP); x = 97;
#(2*HTP); x = 107;
#(2*HTP); x = 325;
#(2*HTP); x = 299;
#(2*HTP); x = 335;
#(2*HTP); x = 96;
#(2*HTP); x = 37;
#(2*HTP); x = 269;
#(2*HTP); x = 511;
#(2*HTP); x = 389;
#(2*HTP); x = 238;
#(2*HTP); x = 177;
#(2*HTP); x = 26;
#(2*HTP); x = 396;
#(2*HTP); x = 374;
#(2*HTP); x = 167;
#(2*HTP); x = 256;
#(2*HTP); x = 219;
#(2*HTP); x = 325;
#(2*HTP); x = 443;
#(2*HTP); x = -217;
#(2*HTP); x = 38;
#(2*HTP); x = 63;
#(2*HTP); x = -182;
#(2*HTP); x = -16;
#(2*HTP); x = 174;
#(2*HTP); x = -143;
#(2*HTP); x = -417;
#(2*HTP); x = -232;
#(2*HTP); x = -5;
#(2*HTP); x = -222;
#(2*HTP); x = 83;
#(2*HTP); x = -220;
#(2*HTP); x = -89;
#(2*HTP); x = -263;
#(2*HTP); x = -48;
#(2*HTP); x = -493;
#(2*HTP); x = 112;
#(2*HTP); x = -253;
#(2*HTP); x = -252;
#(2*HTP); x = -507;
#(2*HTP); x = -249;
#(2*HTP); x = -273;
#(2*HTP); x = -497;
#(2*HTP); x = -164;
#(2*HTP); x = 96;
#(2*HTP); x = -65;
#(2*HTP); x = -306;
#(2*HTP); x = -192;
#(2*HTP); x = -259;
#(2*HTP); x = -221;
#(2*HTP); x = -689;
#(2*HTP); x = -468;
#(2*HTP); x = -348;
#(2*HTP); x = -170;
#(2*HTP); x = -215;
#(2*HTP); x = -296;
#(2*HTP); x = -677;
#(2*HTP); x = -529;
#(2*HTP); x = 4;
#(2*HTP); x = -212;
#(2*HTP); x = -223;
#(2*HTP); x = -276;
#(2*HTP); x = 351;
#(2*HTP); x = -312;
#(2*HTP); x = -194;
#(2*HTP); x = -49;
#(2*HTP); x = 117;
#(2*HTP); x = -140;
#(2*HTP); x = 87;
#(2*HTP); x = 110;
#(2*HTP); x = -10;
#(2*HTP); x = -287;
#(2*HTP); x = 132;
#(2*HTP); x = 20;
#(2*HTP); x = 313;
#(2*HTP); x = -119;
#(2*HTP); x = 58;
#(2*HTP); x = -17;
#(2*HTP); x = -251;
#(2*HTP); x = -83;
#(2*HTP); x = -236;
#(2*HTP); x = 469;
#(2*HTP); x = 213;
#(2*HTP); x = 296;
#(2*HTP); x = 237;
#(2*HTP); x = 423;
#(2*HTP); x = 512;
#(2*HTP); x = 162;
#(2*HTP); x = 67;
#(2*HTP); x = 469;
#(2*HTP); x = 693;
#(2*HTP); x = 236;
#(2*HTP); x = 141;
#(2*HTP); x = 0;
#(2*HTP); x = 183;
#(2*HTP); x = 290;
#(2*HTP); x = 277;
#(2*HTP); x = 150;
#(2*HTP); x = -39;
#(2*HTP); x = -212;
#(2*HTP); x = -297;
#(2*HTP); x = -260;
#(2*HTP); x = -115;
#(2*HTP); x = 78;
#(2*HTP); x = 238;
#(2*HTP); x = 300;
#(2*HTP); x = 238;
#(2*HTP); x = 78;
#(2*HTP); x = -115;
#(2*HTP); x = -260;
#(2*HTP); x = -297;
#(2*HTP); x = -212;
#(2*HTP); x = -39;
#(2*HTP); x = 150;
#(2*HTP); x = 277;
#(2*HTP); x = 290;
#(2*HTP); x = 183;
#(2*HTP); x = 0;
#(2*HTP); x = -183;
#(2*HTP); x = -290;
#(2*HTP); x = -277;
#(2*HTP); x = -150;
#(2*HTP); x = 39;
#(2*HTP); x = 212;
#(2*HTP); x = 297;
#(2*HTP); x = 260;
#(2*HTP); x = 115;
#(2*HTP); x = -78;
#(2*HTP); x = -238;
#(2*HTP); x = -300;
#(2*HTP); x = -238;
#(2*HTP); x = -78;
#(2*HTP); x = 115;
#(2*HTP); x = 260;
#(2*HTP); x = 297;
#(2*HTP); x = 212;
#(2*HTP); x = 39;
#(2*HTP); x = -150;
#(2*HTP); x = -277;
#(2*HTP); x = -290;
#(2*HTP); x = -183;
#(2*HTP); x = 0;
#(2*HTP); x = 183;
#(2*HTP); x = 290;
#(2*HTP); x = 277;
// Stimuli End
//}
$finish;
end
endmodule