SVIncCompil/Testcases/Verilator/t_math_vliw.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2005 by Wilson Snyder.

module t (/*AUTOARG*/
   // Inputs
   clk
   );

   input clk;
   integer cyc; initial cyc=0;
   reg [7:0] crc;
   reg [223:0] sum;

   wire [255:0] mglehy = {32{~crc}};
   wire [215:0] drricx = {27{crc}};
   wire [15:0]  apqrli = {2{~crc}};
   wire [2:0]   szlfpf = crc[2:0];
   wire [15:0]  dzosui = {2{crc}};
   wire [31:0]  zndrba = {16{crc[1:0]}};
   wire [223:0] bxiouf;

   vliw vliw (
	      // Outputs
	      .bxiouf (bxiouf),
	      // Inputs
	      .mglehy	(mglehy[255:0]),
	      .drricx	(drricx[215:0]),
	      .apqrli	(apqrli[15:0]),
	      .szlfpf	(szlfpf[2:0]),
	      .dzosui	(dzosui[15:0]),
	      .zndrba	(zndrba[31:0]));

   always @ (posedge clk) begin
      cyc <= cyc + 1;
      crc <= {crc[6:0], ~^ {crc[7],crc[5],crc[4],crc[3]}};
      if (cyc==0) begin
	 // Setup
	 crc <= 8'hed;
	 sum <= 224'h0;
      end
      else if (cyc<90) begin
	 //$write("[%0t] cyc==%0d BXI=%x\n",$time, cyc, bxiouf);
	 sum <= {sum[222:0],sum[223]} ^ bxiouf;
      end
      else if (cyc==99) begin
	 $write("[%0t] cyc==%0d crc=%b %x\n",$time, cyc, crc, sum);
	 if (crc !== 8'b01110000) $stop;
	 if (sum !== 224'h1fdff998855c3c38d467e28124847831f9ad6d4a09f2801098f032a8) $stop;
	 $write("*-* All Finished *-*\n");
	 $finish;
      end
   end

endmodule

module vliw (
	     input[255:0]  mglehy,
	     input[215:0]  drricx,
	     input[15:0]   apqrli,
	     input[2:0]    szlfpf,
	     input[15:0]   dzosui,
	     input[31:0]   zndrba,
	     output wire [223:0] bxiouf
	     );

   wire [463:0] zhknfc  =   ({29{~apqrli}} & {mglehy, drricx[215:8]})
		| ({29{apqrli}}  & {mglehy[247:0], drricx});
   wire [335:0] umntwz =   ({21{~dzosui}} & zhknfc[463:128])
		| ({21{dzosui}}  & zhknfc[335:0]);
   wire [335:0] viuvoc = umntwz << {szlfpf, 4'b0000};
   wire [223:0] rzyeut = viuvoc[335:112];
   assign bxiouf       = {rzyeut[7:0],
             		  rzyeut[15:8],
             		  rzyeut[23:16],
             		  rzyeut[31:24],
             		  rzyeut[39:32],
             		  rzyeut[47:40],
             		  rzyeut[55:48],
             		  rzyeut[63:56],
             		  rzyeut[71:64],
             		  rzyeut[79:72],
             		  rzyeut[87:80],
             		  rzyeut[95:88],
             		  rzyeut[103:96],
             		  rzyeut[111:104],
             		  rzyeut[119:112],
             		  rzyeut[127:120],
             		  rzyeut[135:128],
             		  rzyeut[143:136],
             		  rzyeut[151:144],
             		  rzyeut[159:152],
             		  rzyeut[167:160],
             		  rzyeut[175:168],
             		  rzyeut[183:176],
             		  rzyeut[191:184],
             		  rzyeut[199:192],
             		  rzyeut[207:200],
             		  rzyeut[215:208],
             		  rzyeut[223:216]};

endmodule