hdlc帧接收器 包含文件： 设计代码 测试代码 综合脚步 说明文档

				/////////////////////////////////////////////////				//If you have any question about this testbench				//please get in touch with me:  llbt24@zju.edu.cn				//				//				//				/////////////////////////////////////////////////				`timescale 1ns/1ns				module testHDLC;				reg RXD,RXCLK,RESET;				wire TXCLK;				wire[7:0] TXD;				wire[2:0] TXDS;								reg isfix;				reg[7:0] bytedate;				reg[2:0] bytekind;				reg iswrong;				reg isinsert;								integer RXDOUT;				integer insertnum;				integer bittest;				integer bitstream;				integer bytecount;				integer framecount;				integer TXD_REF_int;				integer TXDS_REF_int;				integer seednum;								reg[7:0] TXD_REF;				reg[2:0] TXDS_REF;												hdlc_recv instance(RXD,RXCLK,RESET,TXD,TXCLK,TXDS);				//HDLC instance(RXD,RXCLK,RESET,TXD,TXCLK,TXDS);								always #10 RXCLK=!RXCLK;								initial				   begin				      RESET=1; RXCLK=0; RXD=1;				      isfix=0; bytedate=0; bytekind=0;				      iswrong=0; bitstream=0; bytecount=0; framecount=0; isinsert=1;				      TXD_REF=0; TXDS_REF=0;				      				      $hello;				      #20 RESET=0;				      #20 RESET=1;				          seednum=21; $seed(seednum);								      #70 task_flag_gen; framecount=framecount+1;   //framecount=1;				         				          isfix=1; bytedate=8'h23; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h67; bytekind=3'b101; task_byte_fix; task_byte_gen; 					  isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'h8F; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hFE; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'h7F; bytekind=3'b100; task_byte_fix; task_byte_gen; //6-10					  isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hC3; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hE7; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'h10; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'h3F; bytekind=3'b011; task_byte_fix; task_byte_gen; //11-15					  				//          task_flag_gen;				//          insertnum=11; task_ones_insert;				          task_flag_gen; framecount=framecount+1;   //framecount=2;									  isfix=0; bytedate=8'h00; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h03; bytekind=3'b101; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hF2; bytekind=3'b010; task_byte_fix; task_byte_gen;									  task_flag_gen;					  task_flag_gen;					  task_flag_gen;				//	  insertnum=2; task_ones_insert;					  task_flag_gen; framecount=framecount+1;   //framecount=3;					  					  isfix=1; bytedate=8'h45; bytekind=3'b010; task_byte_fix; task_byte_gen; //1-5									  task_flag_gen;					  insertnum=0; task_ones_insert;					  task_flag_gen; framecount=framecount+1;   //framecount=4;									  isfix=0; bytedate=8'h00; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h7E; bytekind=3'b101; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hF7; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'h7E; bytekind=3'b011; task_byte_fix; task_byte_gen;					  					  task_flag_gen;					  insertnum=21; task_ones_insert;					  task_flag_gen; framecount=framecount+1;   //framecount=5;					  					  isfix=1; bytedate=8'h37; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=0; bytedate=8'h00; bytekind=3'b101; task_byte_fix; task_byte_gen;					  repeat(61)    					    begin						isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen; //3-63					    end 					  isfix=1; bytedate=8'h1F; bytekind=3'b011; task_byte_fix; task_byte_gen; //64					  					  task_flag_gen;				          insertnum=5; task_ones_insert;					  task_flag_gen; framecount=framecount+1;   //framecount=6;									  isfix=1; bytedate=8'h37; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=0; bytedate=8'h00; bytekind=3'b101; task_byte_fix; task_byte_gen;					  repeat(62)					    begin				                isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen; //3-64					    end					  isfix=1; bytedate=8'h56; bytekind=3'b001; task_byte_fix; task_byte_gen; //65									  task_flag_gen;					  insertnum=3; task_ones_insert;				          task_flag_gen; framecount=framecount+1;   //framecount=7;								          isfix=0; bytedate=8'h00; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h3E; bytekind=3'b010; task_byte_fix; task_byte_gen;									  task_flag_gen;				          insertnum=20; task_ones_insert;				          task_flag_gen; framecount=framecount+1;   //framecount=8;								          isfix=1; bytedate=8'h54; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=0; bytedate=8'h00; bytekind=3'b101; task_byte_fix; task_byte_gen;					  repeat(125)					    begin						isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen; //3-127					    end					  isfix=1; bytedate=8'h5D; bytekind=3'b001; task_byte_fix; task_byte_gen; //128					  	  				          task_flag_gen;					  insertnum=7; task_ones_insert;					  task_flag_gen; framecount=framecount+1;								          isinsert=0;                    //framecount=9;					  isfix=1; bytedate=8'h37; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h17; bytekind=3'b101; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hEC; bytekind=3'b111; task_byte_fix; task_byte_gen;					  isinsert=1;					  isfix=1; bytedate=8'h32; bytekind=3'b111; task_byte_fix; task_byte_gen;					  isfix=0; bytedate=8'h00; bytekind=3'b111; task_byte_fix; task_byte_gen;									  task_flag_gen;					  insertnum=2; task_ones_insert;					  task_flag_gen; framecount=framecount+1;   //framecount=10;					  					  isfix=1; bytedate=8'h34; bytekind=3'b110; task_byte_fix; task_byte_gen; //1-5					  isfix=1; bytedate=8'h5A; bytekind=3'b101; task_byte_fix; task_byte_gen;					  isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=0; bytedate=8'h00; bytekind=3'b100; task_byte_fix; task_byte_gen;					  isfix=1; bytedate=8'hC6; bytekind=3'b011; task_byte_fix; task_byte_gen; //6-10									  task_flag_gen;					  insertnum=11; task_ones_insert;								          $finish;				   end								always @(posedge RXCLK)				    task_display_RXD;								always @(negedge TXCLK)				    begin				       $readresult(TXD_REF_int,TXDS_REF_int);				       TXD_REF=TXD_REF_int;				       TXDS_REF=TXDS_REF_int;				//       if(TXD==TXD_REF&&TXDS==TXDS_REF)				//	  $display("Current byte is OK\n");				//       else				//	  $display("Current byte is WRONG\n");				    end    				   								task task_flag_gen;				   begin				      bytecount=0;				      #1				      $display("------------------------\n");				      $display("\tnew flag\n");				      $display("------------------------\n");				      repeat(8)				         @(negedge RXCLK) begin $flag(RXDOUT); RXD=RXDOUT; end    				      #10;				   end				endtask								task task_ones_insert;				   begin				      #1				      $display("************************\n");				      $display("\tones_insert\n");				      $display("************************\n");				      repeat(insertnum)				         @(negedge RXCLK) RXD=1;				      if(insertnum)				        #10;				   end				endtask								task task_byte_fix;				   $fix(isfix,bytedate,bytekind);				endtask								task task_byte_gen;				   begin				      bytecount=bytecount+1;				      #1				      $display("^^^^^^^^^^^^^^^^^^^^^^^^\n"); 				      $display("\tnew byte   %0d-%0d\n",framecount,bytecount);				      $display("^^^^^^^^^^^^^^^^^^^^^^^^\n");				      while(bitstream				          @(negedge RXCLK)				              begin				       	          $stuff(bittest);						  if(isinsert&&bittest)					             begin RXD=iswrong; $display("--the next bit is bitstuff--\n"); end						  else					             begin $byte(RXDOUT); RXD=RXDOUT; bitstream=bitstream+1; end				              end				      bitstream=0;				      #10;				   end				endtask								task task_display_RXD;				    $display("At time:  %0t\t\t",$time,"RXD=%b",RXD);				endtask												endmodule